Academic literature on the topic 'Slab tear'

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Journal articles on the topic "Slab tear"

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Jolivet, Laurent, Armel Menant, Vincent Roche, Laetitia Le Pourhiet, Agnès Maillard, Romain Augier, Damien Do Couto, Christian Gorini, Isabelle Thinon, and Albane Canva. "Transfer zones in Mediterranean back-arc regions and tear faults." BSGF - Earth Sciences Bulletin 192 (2021): 11. http://dx.doi.org/10.1051/bsgf/2021006.

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Slab tearing induces localized deformations in the overriding plates of subduction zones and transfer zones accommodating differential retreat in back-arc regions. Because the space available for retreating slabs is limited in the Mediterranean realm, slab tearing during retreat has been a major ingredient of the evolution of this region since the end of the Eocene. The association of detailed seismic tomographic models and extensive field observations makes the Mediterranean an ideal natural laboratory to study these transfer zones. We review in this paper the various structures in back-arc regions differential retreat from the Alboran Sea to the Aegean-Anatolian region and discuss them with the help of 3D numerical models to better understand the partitioning of deformation between high-angle and low-angle faults, as well as the 3-D kinematics of deformation in the middle and lower crusts. Simple, archetypal, crustal-scale strike-slip faults are in fact rare in these contexts above slab tears. Transfer zones are in general instead wide deformation zones, from several tens to several hundred kilometers. A partitioning of deformation is observed between the upper and the lower crust with low-angle extensional shear zones at depth and complex association of transtensional basins at the surface. In the Western Mediterranean, between the Gulf of Lion and the Valencia basin, transtensional strike-slip faults are associated with syn-rift basins and lower crustal domes elongated in the direction of retreat (a-type domes), associated with massive magmatic intrusions in the lower crust and volcanism at the surface. On the northern side of the Alboran Sea, wide E-W trending strike-slip zones in the brittle field show partitioned thrusting and strike-slip faulting in the external zones of the Betics, and E-W trending metamorphic core complexes in the internal zones, parallel to the main retreat direction with a transition in time from ductile to brittle deformation. On the opposite, the southern margin of the Alboran Sea shows short en-échelon strike-slip faults. Deep structures are not known there. In the Aegean-Anatolian region, two main tear faults with different degrees of maturity are observed. Western Anatolia (Menderes Massif) and the Eastern Aegean Sea evolved above a major left-lateral tear in the Hellenic slab. In the crust, the differential retreat was accommodated mostly by low-angle shear zones with a constant direction of stretching and the formation of a-type high-temperature domes exhumed from the middle and lower crust. These low-angle shear zones evolve through time from ductile to brittle. On the opposite side of the Aegean region, the Corinth and Volos Rift as well as the Kephalonia fault offshore, accommodate the formation of a dextral tear fault. Here, only the brittle crust can be observed, but seismological data suggest low-angle shear zones at depth below the rifts. We discuss the rare occurrence of pure strike-slip faults in these contexts and propose that the high heat flow above the retreating slabs and more especially above slab tears favors a ductile behavior with distributed deformation of the crust and the formation of low-angle shear zones and high-temperature domes. While retreat proceeds, aided by tears, true strike-slip fault system may localize and propagate toward the retreating trench, ultimately leading to the formation of new plate boundary, as shown by the example of the North Anatolian Fault.
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Hale, Alina J., Klaus-D. Gottschaldt, Gideon Rosenbaum, Laurent Bourgouin, Matthieu Bauchy, and Hans Mühlhaus. "Dynamics of slab tear faults: Insights from numerical modelling." Tectonophysics 483, no. 1-2 (March 2010): 58–70. http://dx.doi.org/10.1016/j.tecto.2009.05.019.

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Jolivet, Laurent, Armel Menant, Pietro Sternai, Aurélien Rabillard, Laurent Arbaret, Romain Augier, Valentin Laurent, et al. "The geological signature of a slab tear below the Aegean." Tectonophysics 659 (September 2015): 166–82. http://dx.doi.org/10.1016/j.tecto.2015.08.004.

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Meighan, Hallie E., Jay Pulliam, Uri ten Brink, and Alberto M. López-Venegas. "Seismic evidence for a slab tear at the Puerto Rico Trench." Journal of Geophysical Research: Solid Earth 118, no. 6 (June 2013): 2915–23. http://dx.doi.org/10.1002/jgrb.50227.

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Sulaiman, M. I., P. A. Subakti, Haolia, D. Y. Fatimah, I. Madrinovella, A. Abdullah, D. A. Zaky, et al. "Early Results of Eastern Indonesia P-wave Tomography Study Using Regional Events." IOP Conference Series: Earth and Environmental Science 873, no. 1 (October 1, 2021): 012068. http://dx.doi.org/10.1088/1755-1315/873/1/012068.

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Abstract The tectonic system of Eastern Indonesia is controlled by several major and minor plates, such as Indo-Australian, Australian plate, and Pacific plates. This area is known for its complexity, and high seismic activity. This study tries to image the complex structures beneath this region by employing regional events data and seismic tomography methods. We used five years of regional events catalog provided by the Indonesian Agency of Meteorology, Climatology, and Geophysics. We have sorted 7336 events recorded between 120° – 136° longitude and 0° – 13°(-) latitude consisting of 46446 P and 15467 S wave arrival data. Relocated hypocenter map shows a better constrain location on seismicity along outer Bandar Arc. A dipping pattern of seismicity is seen that is going deeper to the Banda Sea. The seismicity map also images a steep angle pattern of seismicity that could be related to the subduction slab roll-back model at North of Wetar island. Interestingly, we spotted a seismicity gap in West Seram that could be linked with slab tear zone. The checker-board test suggests a proper resolution is still reliable to a depth of 200 km with a less interpretable model at a depth of 300 km. P-wave tomographic models image the high velocity dipping down going slab. The Banda slab is seen to subduct from south Timor Island to the north, from east Tanimbar and Aru Island to west part, and from north Seram Island to south. We observed the down-going slab meet from all directions at about 300 km beneath the Banda sea. P wave tomogram also shows the Timor Island slab has a steeper dip that agrees with the seismicity pattern. Near the Seram island, we identify a low-velocity anomaly zone infiltrate the Banda slab beneath the shallow part of West Seram, which was previously interpreted as slab tear zone. This study also noticed a higher velocity tomogram model at North of Wetar island that might indicate a back-arc thrust. Lastly, a low-velocity band is also exposed at a shallow depth close to the volcano chain along that Banda volcanic arc.
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Suhardja, Sandy K., Yosua Hotmaruli Lumban Gaol, Agus Abdullah, Andri Dian Nugraha, and Z. Zulfakriza. "Comparison of 3-D Raytracing and Finite Frequency Tomography." Jurnal Geofisika 17, no. 1 (September 3, 2019): 1. http://dx.doi.org/10.36435/jgf.v17i1.393.

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We performed 3-D seismic tomography using teleseismic arrival time at Southwest Mexico. The Mexican subduction zone results from successive fragmentation events that affected the ancient Farallon plate as various segments of the East Pacific rise approached the paleo-trench off western North America. The complexity in this region is related to two subducting oceanic plates, the Rivera and Cocos plates, that have different ages, compositions, convergence velocities and subduction dip angles. In this study, we compared the 3-D raytracing tomography model with finite frequency tomography model. Final models show the differences in amplitude and pattern between the raytracing and finite frequency. 3D raytracing models produced sharper images of fast velocity structures in the mantle. The deeper slabs are more coherent and show less broadening with depth than using 1D finite frequency kernels. However, although the finite frequency and 3-D ray tracing models show some differences in amplitude and pattern, the overall agreement of the models supports the interpretation of Yang et al. (2009) that slab rollback is occurring in South Western Mexico. One possible different interpretation between the raytracing and finite frequency theory results concerns the deep structure of the Rivera slab. The finite frequency models show that the Rivera slab is clearly observable at a depth of about 300km but fades away at greater depths. However, the 3-D ray tracing model shows a clear fast velocity band down to a depth of 400 km and thus our model does not support a slab tear of the Rivera plate above 400 km depth
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Zhou, Tihe, Ronald O’Malley, Hatem Zurob, Mani Subramanian, Sang-Hyun Cho, and Peng Zhang. "Control of Upstream Austenite Grain Coarsening during the Thin-Slab Cast Direct-Rolling (TSCDR) Process." Metals 9, no. 2 (February 1, 2019): 158. http://dx.doi.org/10.3390/met9020158.

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Thin-slab cast direct-rolling (TSCDR) has become a major process for flat-rolled production. However, the elimination of slab reheating and limited number of thermomechanical deformation passes leave fewer opportunities for austenite grain refinement, resulting in some large grains persisting in the final microstructure. In order to achieve excellent ductile to brittle transition temperature (DBTT) and drop weight tear test (DWTT) properties in thicker gauge high-strength low-alloy products, it is necessary to control austenite grain coarsening prior to the onset of thermomechanical processing. This contribution proposes a suite of methods to refine the austenite grain from both theoretical and practical perspectives, including: increasing cooling rate during casting, liquid core reduction, increasing austenite nucleation sites during the delta-ferrite to austenite phase transformation, controlling holding furnace temperature and time to avoid austenite coarsening, and producing a new alloy with two-phase pinning to arrest grain coarsening. These methodologies can not only refine austenite grain size in the slab center, but also improve the slab homogeneity.
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Argnani, Andrea. "Evolution of the southern Tyrrhenian slab tear and active tectonics along the western edge of the Tyrrhenian subducted slab." Geological Society, London, Special Publications 311, no. 1 (2009): 193–212. http://dx.doi.org/10.1144/sp311.7.

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Megahed, G. M., S. K. Paul, T. A. El-Bitar, and F. Ibrahim. "Development of X60/X70 Line Pipe Steels through EAF-Thin Slab Casting Technology at Ezz Flat Steel, Ain Sukhna, Egypt." Materials Science Forum 500-501 (November 2005): 261–68. http://dx.doi.org/10.4028/www.scientific.net/msf.500-501.261.

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API X60/X70 line pipe steels are characterized by their higher strength and excellent toughness properties, which are achieved through grain refinement by addition of micro-alloying elements and controlled rolling. Thin slab casting of Nb micro-alloyed steel is a great challenge to the steel producer because of possible transverse cracking of slabs. The major casting parameters, which affect transverse cracking, were critically examined and modified for production of defect free slabs. The hot strip mill parameters were also designed for controlled rolling of slabs to achieve the desired mechanical properties. Three heats (one X60 and two X70) of each 175 ton liquid steel were made and processed into 6, 8 and 10 mm hot rolled coils. In the heat of X60, Nb and Ti were used as micro-alloying elements where as vanadium was also added in X70 heats to achieve the desired strength. The YS/UTS ratio was designed to be below 0.9 by controlling the amount of Si and Mn. During slab casting, liquid core reduction (LCR) was used to reduce the slab thickness from 90 to 70 mm and to minimize the center line segregation and porosity. The slabs were heated and homogenized in a tunnel furnace at 1150 ±10°C before rolling in the roughing mill. The rolling procedure was designed to achieve the highest possible amount of deformation at the roughing stand for best conditioning of austenite before rolling in the finishing mill. 50% and 35% reductions in slab thickness were given for rolling of 6 and 10 mm coils respectively. The final thickness reduction was then distributed over 5-6 stands of the finishing mill depending on the coil thickness. All parameters were designed to achieve finish rolling temperature 850 ±10°C in the austenite region and very near to Ar3. After rolling, the steel was fast cooled to 570±10°C before coiling. Mechanical properties and microstructure evolutions were extensively investigated. The tensile properties particularly the elongation and YS/UTS ratio achieved were good. The CVN impact energy in transverse direction was found to be very high ranging from 220 to 330 Joules. Furthermore, the impact transition temperature (ITT) was found to be below -70 °C. The results of the drop weight tear test (DWTT) showed fully ductile behavior up to -40°C confirming the impact test results. SEM study was carried out to assess the fracture mechanism of impact-tested specimens at different temperatures.
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Rosenbaum, Gideon, Massimo Gasparon, Francesco P. Lucente, Angelo Peccerillo, and Meghan S. Miller. "Kinematics of slab tear faults during subduction segmentation and implications for Italian magmatism." Tectonics 27, no. 2 (April 2008): n/a. http://dx.doi.org/10.1029/2007tc002143.

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Dissertations / Theses on the topic "Slab tear"

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Lynner, Colton, Megan L. Anderson, Daniel E. Portner, Susan L. Beck, and Hersh Gilbert. "Mantle flow through a tear in the Nazca slab inferred from shear wave splitting." AMER GEOPHYSICAL UNION, 2017. http://hdl.handle.net/10150/625357.

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A tear in the subducting Nazca slab is located between the end of the Pampean flat slab and normally subducting oceanic lithosphere. Tomographic studies suggest mantle material flows through this opening. The best way to probe this hypothesis is through observations of seismic anisotropy, such as shear wave splitting. We examine patterns of shear wave splitting using data from two seismic deployments in Argentina that lay updip of the slab tear. We observe a simple pattern of plate-motion-parallel fast splitting directions, indicative of plate-motion-parallel mantle flow, beneath the majority of the stations. Our observed splitting contrasts previous observations to the north and south of the flat slab region. Since plate-motion-parallel splitting occurs only coincidentally with the slab tear, we propose mantle material flows through the opening resulting in Nazca plate-motion-parallel flow in both the subslab mantle and mantle wedge.
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Koudashev, Oleg. "Large-Scale Structure and Geochronology of Porphyry and Epithermal Deposits Along the Northern Collisional Margin of the Australian Continental Lithosphere." Phd thesis, Canberra, ACT : The Australian National University, 2016. http://hdl.handle.net/1885/144451.

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In this thesis I combine 40Ar/39Ar geochronology and tectonics to investigate porphyry and epithermal deposits along the northern collisional margin of the Australian continental lithosphere using case studies on the islands of New Guinea and Sulawesi. The tectonic evolution of these islands reflects the effects of progressive northward movement after rifting off from Gondwana, with this movement involving interaction with multiple subduction zones and several accretion events. The island of New Guinea contains a number of world-class porphyry deposits forming the New Guinea copper-gold belt, including the world’s largest gold producer Grasberg. In comparision, the island of Sulawesi hosts multiple small and medium sized deposits but no major porphyries like New Guinea. The work reported here established the age of the hydrothermal system at the Yandera porphyry, located in the northern highlands of Papua New Guinea. The 3 Ma age obtained is younger than lithologies observed in drill core, or at the surface, suggesting that mineralisation in Yandera is genetically unrelated to the Yandera Porphyry suite of intrusives, making Yandera a detached/wallrock porphyry. Argon geochronology using step heating diffusion experiments was shown capable of identifying the age of hydrothermal overprinting, and providing an age for mineralisation U-Pb geochronology from an earlier study showed the porphyry suite to be 6.3-7.1 Ma. The age of ductile fabrics, interpreted to be related to an extensional shear zone, and metamorphism in the Bundi Fault Zone, north of the Yandera deposit, was established to be 8-13 Ma, which is coeval with the emplacement of the Bismarck Intrusive Complex and smaller satellite intrusives. These ages were much older than the mineralisation at Yandera. Thus the surface geology, except for younger fauts, was largely irrelevant to the formation of the deposit, except in respect to ground preparation. Geochronology of the Tombulilato, Tapadaa and Gunnung Pani deposits on the North Arm of Sulawesi also produced very young ages ranging from 5.5-1.8 Ma. Similar to Yandera,the Tapadaa porphyry deposit was also found to be hosted in an igneous intrusion that was older than the age of mineralisation, placing Tapadaa in a similar time period to the nearby epithermal deposits in Tombulilato. This thesis also reports the analysis of earthquake hypocenters and seismic tomography datasets, used to interpret the geometry and structure of subducted lithosphere beneath the areas of interest. The Yandera deposit and deposits in the North Arm of Sulawesi were found to be located above portions of subducted lithosphere adjacent to slab tears. Deposits were also found to be associated with structures and processes that should allow the fast ascent of magmas through the crust such as major strike-slip faults and uplift. Formation of the deposits of Tombulilato and Tapadaa was interpreted to occur as a result of north-directed subduction and rollback of the Molucca Sea Slab. Formation of the Yandera deposit was interpreted to occur due to tearing of subducted lithosphere as the result of oblique collision with the Finisterre terrane. The formation of these deposits was proposed to coincide with initiation of movement on nearby major strike-slip faults. (U-Th)/He geochronology showed that the Yandera deposit formed during a period of rapid denudation/exhumation of the New Guinea Highlands. Analysis of published ages conducted in this thesis for deposits in the Southwest Pacific indicates that the temporal distribution of these deposits is not random, suggesting region-scale controls on the formation of such deposits. This implies large scale tectonic and/or mantle processes play a part in the formation of such deposits. Possible geodynamic scenarios are discussed in the final chapter.
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Čihák, Michael. "Analýza a hodnocení komunikačních toků aplikační podpory." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-193333.

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Diploma thesis is focused on evaluation of communication streams in the process of application support also known under the term IT support. Thesis is divided into three main parts: In the first part outlines the topic of application support. The definition of term, relation between business and IT and defining the position of application support in the process of information system development along with support services methodologies. The second part is focused on description of typical user of application support, from the side of sponsor as well as from the side of supplier. The following are the main communication streams between both sides as well as inside the supplier team. The third, practical part contains an analysis of application support on a specific project. Discussed are communication barriers, their impact including suggestions for improvement.
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Robinson, Frank Alexander. "Geochronological and geochemical constraints on the lithospheric evolution of the Arabian shield, Saudi Arabia: understanding plutonic rock petrogenesis in an accretionary orogen." Thesis, 2014. http://hdl.handle.net/2440/84674.

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The Arabian-Nubian shield reflects the complex interplay between juvenile oceanic and continental arc fragments accreted during the final stages of Gondwanian super continental assembly. To date, much of the geochronological and geochemical data from the Arabian Shield, Saudi Arabia, is absent or poorly constrained and extrapolated from neighbouring Middle Eastern and African countries. Little attention has been paid to the petrogenesis and tectonic significance of the plutonic rocks pursuant to lithospheric orogenesis. A total of 137 samples from 26 geological units were collected from the Midyan, Hijaz, Asir, Tathlith, Afif, Ad Dawadimi and Ha’il terranes with particular emphasis on accretionary suture zone and within plate setting relationships. Extensive data bases are constructed using zircon U-Pb geochronology and Hf isotopes to evaluate Gondwanian significance and whole rock major and trace element geochemistry, Nd, Sm, Sr isotopes and zircon geochemistry to determine their petrogenetic properties. These parameters provide new insight into changing mantle conditions beneath collisional sutures (Yanbu, Nabitah and Halaban) and within plate asthenospheric upwelling. 19 granitic units are subdivided into metaluminous, peraluminous and peralkaline groups that possess distinguished island arc (~950-730Ma), syncollisional (~<730-636Ma), post tectonic (~<636-600Ma) and anorogenic (<600Ma) U-Pb geochronology. These magmatic phases represent accretionary cycles initiating from the dismantlement of Rodinia, closure of the Mozambique Ocean and final Gondwana amalgamation. Evidence for final assembly is recorded at ~525Ma (Najd fault reactivation) which is now the youngest dated magmatism in the Arabian-Nubian Shield and warrants repositioning of the regional unconformity at ~542Ma. Emplacement of sampled Arabian Shield classic A-type post-tectonic and anorogenic granitoids falls into three categories: 1) Intrude sutures immediately following collision which contain extensive mafic cumulate fractionation and N-MORB affiliation. 2) Plate boundary juxtaposed suites without obvious mafic cumulates, but posses contaminated N-MORB geochemistry. 3) Within plate granitoids isolated from plate boundaries and also without obvious mafic cumulates, but with a distinctive enriched (OIB) like asthenospheric mantle source. All categories produce similar felsic endmembers, but contain isotopically distinct mantle source. These are differentiated using a newly developed geochemical scheme (contaminated and enriched mantle granitoids) that is successfully applied to regional Arabian-Nubian examples. The diachronous Nabitah Orogenic Belt symbolises collision and subduction between western oceanic and eastern continental terranes that was terminated by the appearance of category 1 post-tectonic granitoids. This long lived (~50Ma) granitic magmatism contains mingling textures, discrete crystallisation ages, distinguished zircon morphologies and isotopically less juvenile mafics that geochronologically and geochemically reflect magmatic pulsing from a contaminated lower crustal MASH zone. The transition from N-MORB like mafics to isotopically enriched granitoids (isotopically similar to category 3 suites) reflects subduction magmatism followed by slab tear and asthenospheric influx. Conversely, the appearance of category 3 anorogenic plutons is characterised by widespread, tightly constrained (<10Ma) magmatism that is geochemically enriched, economic and symbolic of lithospheric delamination and asthenospheric (OIB like) upwelling. Differences between category 1, 2 and 3 zircon geochemistry constrain further contaminated and enriched mantle source behaviour that produces similar felsic products from distinguished petrogenetic processes. In summary, the work presented in this thesis establishes clear distinctions between accretionary syncollisional suites and anorogenic suites, but more significantly, post-orogenic plutons confined to suture zones from those confined to within plate settings. This allows new petrogenetic insights into changing juvenile mantle beneath the Arabian Shield.
Thesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, 2014
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Chen, Li-Wei, and 陳立瑋. "Engineering Properties of Geopolymer Brick Made from Waste Tea Slag." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7w89f4.

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碩士
正修科技大學
營建工程研究所
106
In this study main used of alkali activation technology, excited slag powder cementation capacity, first production of slag powder geopolymer,slag powder geopolymer trial mix ratios(1)alkali equivalent(AE) was set to 6%, 8% and 10% ,(2)alkali modulus ratio (MS) was set to1.0,1.5 and 2.0,(3) liquid binder ratio, such as the deployment of 1.67,1.25and 1, mixing production 5cm * 5cm * 5cm test samples,(4) cured 3 days, 7 days and 28 days, after executed the compression test, taked the best ratio used as cementation material of tea dregs brick. Secondly production of tea dregs brick geopolymer trial mix ratios(1)alkali equivalent(AE) was set to 6%, 8% and 10% ,(2)alkali modulus ratio (MS) was set to1.0,1.5 and 2.0,(3) liquid binder ratio, such as the deployment of 1.67,1.25and 1,(4)binder aggregate ratio was set to3,4 and 5,and pouring set to 5cm*5cm*5cm test specimens, and then moved to 60 ℃oven for 48 hours after, then form removal, cured 3 days, 7 days and 28 days after, executed a series of tests, base mechanics features of the brick through tests of setting time, compressive strength, water absorption and thermal conductivity, target for the production could meet the CNS 382 common brick specifications requirements. From the experimental results show (1) compressive strength of slag powder geopolymer cementitious material increases with equivalent alkali and alkali modulus ratio increase, it decreases with liquid binder ratio increase, it increases with liquid binder ratio decrease. (2) setting time of slag powder geopolymer cementitious material decrases with equivalent alkali increase, it decreases with liquid binder ratio shorten. among them, the AE = 6%, Ms = 2.0, L/S = 1.0, the setting time was shortest.(3)compressive strength of tea dregs brick geopolymer increases with equivalent alkali increase, compressive strength increases with binder aggregate ratio increase. (4)water absorption of tea dregs brick geopolymer brick decreases with equivalent alkali and binder aggregate ratio increase, increases with liquid binder ratio increase, among them, the AE = 6%, L/S = 1.0, B/A = 5the water absorption was lowest.(5) The best ratio of tea dregs brick geopolymer were alkali equivalent(AE) was 6%, 8% and 10%, alkali modulus ratio (MS) was 2.0, liquid binder ratio was1.0, binder aggregate ratio was 5, it can meet the compressive strength and water absorption requirement of CNS-382 common brick.(6)thermal conductivity of tea dregs brick geopolymer brick in all ratios are between 0.466 ~ 0.762W / m × k, its thermal conductivity is lower than normal concrete, its representation, tea dregs brick geopolymer is good insulation green building materials.
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Books on the topic "Slab tear"

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Inoue, Takehiko. Slam Dunk, Vol. 31: Shohoku High School Basketball Team. San Francisco, CA: Viz Media, 2013.

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Inoue, Takehiko. Slam Dunk, Vol. 9: A team of troubled teens. San Francisco: VIZ Media, 2010.

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Inoue, Takehiko. Slam Dunk, Vol. 7: The End of the Basketball Team. San Francisco, Calif: VIZ Media, 2009.

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Connor, Brendan. Slam dunk: The Raptors and the NBA in Canada. Scarborough, Ont: Prentice Hall Canada, 1995.

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Kate, Pehrson, and Minnesota Center for Book Arts., eds. Slam ugly: Team Minneapolis 2000, Slam MN! Edina, Minn: Browneyedgirl Press, 2000.

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Suntup, Paul, Derrick Brown, and Steve Ramirez. Laguna Beach, CA Slam Team 2000. FarStarFire Press, 2000.

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Suntup, Paul, Buzzy Ennis, Mindy Netifee, Lizzy Wann, and John Gardiner. The 1999 Laguna Beach, CA Slam Team. FarStarFire Press, 1999.

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Slam presents Kobe: The great one. New York: Source Interlink Media, 2010.

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Mercer, Tom. Blade Slap: A Year with the Raf Chinook Display Team. Amberley Publishing, 2019.

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Mullen, Rene, Marcial Delgado, Kristin Patton, Anna Martinez, and Zachary Kluckman. Stronger Than Stigma: Poetry from the 2019 MindWell Poetry Slam Team. Independently Published, 2019.

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Book chapters on the topic "Slab tear"

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Mahatsente, Rezene, Süleyman Alemdar, and İbrahim Çemen. "Effect of Slab-Tear on Crustal Structure in Southwestern Anatolia." In Active Global Seismology, 103–19. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781118944998.ch4.

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Monga, P., and L. Funk. "SLAP Tears." In Diagnostic Clusters in Shoulder Conditions, 71–77. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-57334-2_7.

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Fitzpatrick, Sean, Julie Y. Bishop, and Gregory L. Cvetanovich. "SLAP Tear Diagnosis and Management." In The Management of Biceps Pathology, 125–36. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63019-5_9.

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Hill, Kelly L., and Felix H. Savoie. "The Adolescent Overhead Athlete with SLAP Tear and Partial Infraspinatus Tear." In Rotator Cuff Across the Life Span, 53–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-58729-4_7.

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Deasey, Matthew J., and Stephen F. Brockmeier. "SLAP Tears and Biceps Tendinopathy." In The Resident's Guide to Shoulder and Elbow Surgery, 107–17. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-12255-2_8.

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Krepkin, Konstantin, Michael J. Tuite, and Jenny T. Bencardino. "Imaging Diagnosis of SLAP Tears and Microinstability." In The Shoulder, 167–87. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-06240-8_8.

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Mahure, Siddharth A., Mina M. Abdelshahed, and Andrew S. Rokito. "Type II SLAP Tear in an 19-Year-Old Baseball Pitcher Treated with SLAP Repair." In The Biceps and Superior Labrum Complex, 129–44. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-54934-7_10.

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Riff, Andrew J., Rachel M. Frank, and Brian Forysthe. "SLAP Lesion: Part IV. Management of Concomitant Rotator Cuff Tear." In Sports Injuries to the Shoulder and Elbow, 125–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-41795-5_13.

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Paci, James M., and Lucas King. "Type 4 SLAP Tear in 21-Year-Old Minor League Centerfielder." In The Biceps and Superior Labrum Complex, 213–22. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-54934-7_16.

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Tuite, Michael J., and Christian W. A. Pfirrmann. "Shoulder: Instability." In IDKD Springer Series, 1–9. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71281-5_1.

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AbstractGlenohumeral instability is the inability to keep the humeral head centered in the glenoid fossa. Glenohumeral instability can be classified according to etiology and direction of instability. The glenoid labrum, the glenohumeral ligaments, and the bony structures contribute to the stability glenohumeral joint and need to be addressed with imaging. One of the difficulties with accurately diagnosing labral tears on MR imaging is the normal labral variants, which can sometimes appear similar to tears. The location and extent of a Hill-Sachs lesion and glenoid rim defects need to be related to recognize engaging Hill-Sachs lesions or off-track situations. There are several types of labral tears that are not associated with a prior dislocation. SLAP tears are one of the more common tears of the labrum and can sometimes be difficult to distinguish from a normal variant superior sublabral recess. Labral tears in overhead thrower occur in the posterosuperior labrum, adjacent to the posterior rotator cuff tears in these athletes. Tears in the posterosuperior labrum are also associated with spinoglenoid notch paralabral cysts, which can be painful and cause external rotation weakness.
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Conference papers on the topic "Slab tear"

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Bearden, Alexander, Matthew Brueseke, Jeffrey Benowitz, Daniel P. Miggins, and Michael Everett Mann. "EVIDENCE FOR A POST 1 MA YAKUTAT SLAB TEAR: GEOLOGICAL, GEOCHRONOLOGICAL, AND GEOCHEMICAL CONSTRAINTS ON THE MACLAREN RIVER VOLCANIC FIELD, SOUTH-CENTRAL ALASKA (USA)." In GSA Connects 2022 meeting in Denver, Colorado. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022am-377236.

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Kendrick, Vance, Brian Frye, Alison Sutcliffe, Jose M. Rodriguez-Ibabe, and Douglas G. Stalheim. "Evaluation of Toughness Characteristics of API Grade Pipeline Steel Produced on Compact Strip Production (CSP) Line." In 2016 11th International Pipeline Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ipc2016-64153.

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As concerns for environmental impact of oil and gas transmission pipelines and overall public safety of the transmission pipeline systems are raised in the public domain, development of optimum toughness characteristics are a key attribute. Toughness performance as measured by charpy impact testing or drop weight tear testing (DWTT) is heavily influenced first by the average transformed grain size and more importantly the cross sectional uniformity/distribution. In addition, the crystallographic texture created can further improve or detract from the toughness performance. The final transformed cross sectional grain size along with the uniformity/distribution is heavily influenced by the available total metallurgical reduction ratio, microalloy design, proper generation of the various recrystallization behavior types during rolling, critical per pass reductions and the final post rolling cooling rate. The final crystallographic texture is influenced by final rolling temperature, cooling rate and final cooling stop temperature. When the final cross sectional grain size and overall uniformity/distribution are marginal for optimum toughness, the addition of favorable crystallographic textures can enhance the toughness performance. The challenge of producing optimum toughness on a thin slab caster, <100 mm thickness, is well known due to the available metallurgical reduction ratios. Typically, for API grade steels, a metallurgical reduction ratio ≥7:1 is required in order to achieve optimum toughness. However, in a thin slab caster the maximum metallurgical reduction ratios possible can be between 5:1 and 7:1 depending on the final thickness. Nucor Steel Gallatin has been working to optimize the overall toughness of API X-grades for transmission pipeline steels in thicknesses up to 12.7 mm using their thin slab Compact Strip Production (CSP) production facility. By utilizing a proper understanding of reducing the as-cast thin slab, along with the key alloy/process attributes and recrystallization behavior kinetics during the rolling process to optimize the final transformed cross sectional grain size and more importantly the uniformity/distribution, a high level of toughness performance can be realized. In addition, a further understanding of the contribution of specific crystallographic textures can further improve the toughness performance of these grades. This paper will discuss alloy/process parameters that have been studied and optimized to improve the low temperature toughness of API steels. In addition, toughness performance and metallographic characterization of different processing parameters will be presented.
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Kim, Kyu Tae, Sang Gi Ko, and Jong Man Han. "Effects of Microstructural Inhomogeneity on HIC Susceptibility and HIC Evaluation Methods for Linepipe Steels for Sour Service." In 2014 10th International Pipeline Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/ipc2014-33341.

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It has been well documented that slab internal quality is one of the key factors for reduced susceptibility of hydrogen induced cracking (HIC) in line pipe steels designed for sour gas service. In addition, the creation of a homogeneous microstructure which is heavily influenced by the slab internal quality is also a critical key parameter to reduce the HIC susceptibility in higher strength line pipe steel grade X60 and above. For the application of deep sea linepipe exposed to higher external pressure environments, heavy gauge in combination with higher strength steel is essential. Homogeneity of the steel microstructure is a key to success for thicker plates used in sour service HIC applications in combination with a deep sea environment. In this paper, various microstructures were compared along with an evaluation of the effects of the various microstructures on HIC susceptibility in grades X52, X65 and X70 designed for sour service. The various microstructures compared consisted of polygonal ferrite and pearlite in the X52 and polygonal ferrite, pearlite, acicular ferrite and bainite in the X65 and X70. The effect of microstructural inhomogeneity on HIC susceptibility was comparatively lower for the X52 than that of the X65 and X70. The microstructure of grade X65 and X70 were different due to the different conditions of rolling and cooling that were applied. Grades X65/X70 had a microstructure of polygonal ferrite/pearlite with bainite islands that resulted in a high crack length ratio (CLR) value caused by different hardness regions across the microstructural matrix. A homogeneous fine acicular ferrite microstructure produced by optimizing temperature control during rolling and cooling showed no hydrogen induced cracking. In addition, this alloy/process/microstructure design resulted in improved toughness results in low temperature drop weight tear test (DWTT). This paper will describe the successful production results of plate and pipe for high strength heavier gauge line pipe steels with highly homogeneous microstructures designed for sour service by controlling chemical design and process conditions in rolling and cooling. In addition, HIC evaluation methods utilizing both a traditional NACE TM0284 method versus that of a Scan-UT method were conducted and compared. A proposal to make the NACE TM0284 testing method more reliable by using Scan-UT method will be presented.
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Mirković, Djordje, Volker Flaxa, and Franz Martin Knoop. "Development and Production of Helical-Two-Step (HTS) Pipes: Grades Up to API X70 for Sour Service Application." In 2012 9th International Pipeline Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ipc2012-90438.

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Within the corresponding commercial and R&D projects five microalloyed pipeline steel grades have recently been developed and processed to spiral-welded pipes. For steel grades X52, X65, and X70 the aimed tensile properties, improved sour service resistivity, and low temperature toughness up to −40°C were reliably achieved. Influence of steel cleanliness, the non-metallic inclusions in particular, on sour gas resistibility has been investigated by means of ultrasonic testing of hydrogen charged HIC (Hydrogen Induced Cracking) samples and SEM (Scanning Electron Microscope) analyses of HIC fracture surfaces. The results have been used to optimize the applied process parameter in steel production and coil processing. The ladle metallurgical treatment and soft reduction were consistently applied within narrow process tolerances enabling high steel cleanness and slab centerline quality, which are both indispensable for sour service application. Subsequent TMCP (Thermo Mechanical Processing) wide strip hot rolling and cooling parameters were selected to prevent a two-phase finish rolling and to obtain a predominating acicular ferritic microstructure. For pipe production, attention was paid to minimize the residual stresses, due to both pipe-forming and welding. The alloying approach is based on the classical sour lean NbTi steel composition, modified by varying Cu, Ni, Cr, and Mo contents to achieve the targeted specification. The processed spiral-welded pipes were formed to diameters between 762 and 1372 mm with a wall thickness of 13.7 to 16.0 mm. CVN (Charpy V-Notch) values were higher than 360 J/cm2 and DWTT (Drop Weight Tear Test) higher than 60% SA (Shear Area) at −40°C. The samples also showed outstanding HIC resistivity. Being proved with standard test conditions according to NACE TM0284 solution A, the CAR (Crack Area Ratio) average value of pipe samples was less than 1% for grades up to X65 and less than 5% for X70 grades. The 4-point-bending SSC (Sulphide Stress Cracking) tests at 80% of SMYS according to NACE TM0177 and ASTM G39 showed no SSC cracks for all projects. Finally, the results of one specific R&D project are presented to demonstrate that even for API X70 grade spiral-welded pipes (OD 1016×16 mm) mechanical properties, e.g. high-strength, ductility, and low temperature toughness has been successfully combined with sour service resistivity.
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Chu, Xinghe, Zhaoming Lu, Luhan Wang, Xiangming Wen, and David Gesbert. "Team Channel-SLAM: A Cooperative Mapping Approach to Vehicle Localization." In 2020 IEEE International Conference on Communications Workshops (ICC Workshops). IEEE, 2020. http://dx.doi.org/10.1109/iccworkshops49005.2020.9145339.

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Breeding, Charlie, Rabon Johnson, and Ben Zimmerman. "Slag and Deposit Monitoring at TVA Cumberland." In ASME 2004 Power Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/power2004-52042.

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Tennessee Valley Authority’s Cumberland Fossil Plant, EPRI and Clyde Bergemann Inc. are collaborating on a test and demonstrate project a novel technology for measuring upper furnace slag deposition. The project team has installed a system of 18 strain gages on the superheater pendant section of the 1300 Mw unit 1 boiler to provide information on the slag and ash deposit accumulation on the pendants. The system is designed identify “clinkers” that form in the pendant section and further to enable further assessment for determining the ability of intelligent soot blowing to remove the slag. This paper will discuss the project objectives, system configuration, expected results and benefits and plans for further deployment of the technology.
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Pillsbury, P. W., R. L. Bannister, R. C. Diehl, and P. J. Loftus. "Development of a 220-MW Coal-Fired Combustion Turbine Combined Cycle: Current Status." In ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/91-gt-184.

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In the eight-year, multicontractor program to develop a 220-MW coal-fired combustion turbine combined cycle plant, the team is now into its third year of subscale slagging combustor testing. Because of an ability to accept unbeneficiated, utility-grade coal, the slagging combustor is the key to the direct coal-fired combustion turbine. The projected plant will contain two 80-MW combustion turbines equipped with slagging combustors, two heat recovery steam generators, and a 65-MW steam turbine. In testing to date, the concept has demonstrated its ability to handle high- and low-sulfur bituminous coals, and low-sulfur subbituminous coal. Feeding the fuel in the form of pulverized coal has proven to be superior to coal-water mixture type feed. The program objectives relative to combustion efficiency, combustor exit temperature, NOx emissions, carbon burnout, and slag rejection have been met. Work continues to reduce alkali, particulate, and SOx levels leaving the combustor. Parametric studies have been made that focus on the latter two problems. They indicate that faster, more thorough slag removal between the rich and lean stages is the path toward achieving lower emission of SOx, alkali, and particulates. New components have been added to the subscale combustor for this purpose.
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Castro, Pedro H. P., Sand Corrêa, and Kleber V. Cardoso. "Uma Abordagem Baseada no Consumo de CPU e RAM para a Eficiência Energética em Centros de Dados para Computação em Nuvem." In Simpósio em Sistemas Computacionais de Alto Desempenho. Sociedade Brasileira de Computação, 2013. http://dx.doi.org/10.5753/wscad.2013.16781.

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A computação em nuvem tem levado os sistemas distribuídos a um novo patamar, oferecendo recursos computacionais de forma virtualizada, flexível, robusta e escalar. Essas vantagens, no entanto, surgem juntamente com um alto consumo de energia nos centros de dados, ambientes que podem ter até centenas de milhares de servidores. Existem muitas propostas para alcançar eficiência energética em centros de dados voltados para computação em nuvem. Entretanto, muitas propostas consideram apenas o consumo proveniente do uso de CPU, além de empregarem definições de SLA dependentes do domínio da aplicação. Neste trabalho, propomos duas novas abordagens para melhorar a eficiência energética desses ambientes. As abordagens se baseiam no consumo proveniente do uso de CPU e de memória conjuntamente. Implementamos e validamos ambas as propostas no simulador CloudSim e comparamos os resultados com outras soluções consideradas estado da arte. Nossas propostas reduzem o consumo de energia em até 33% quando comparadas com outras abordagens. Elas também diminuem a violação de SLA em até 90%, mesmo quando este é definido de forma genérica.
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Lobnikar, Branko, Brigita Krsnik Horvat, and Kaja Prislan. "Podoba raziskovalcev in pomen komuniciranja znanosti v Sloveniji – Evropska noč raziskovalcev 2019." In Organizations at Innovation and Digital Transformation Roundabout. University of Maribor Press, 2020. http://dx.doi.org/10.18690/978-961-286-388-3.31.

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Sašo Dolenc, fizik in filozof, komunikator znanosti, pravi, da znanstveniki opravljajo (vsaj) štiri različne vrste intelektualnih opravil, ki so vse za družbo izjemno pomembne: (a) ustvarjajo nove ideje, (b) vrednotijo ideje, (c) vrednotijo strokovnjake, ki govorijo v imenu posamezne stroke ter (d) javno zagovarjajo in predstavljajo ideje, ki so sprejete v znanstveni skupnosti. Del projekta SAWE – Varni z znanostjo – v okviru Evropske noči raziskovalcev 2019 je bila tudi študija o podobi znanosti in raziskovalcev v Sloveniji. V raziskavo je bilo vključenih 613 anketirancev. Rezultati so pokazali, da anketiranci slovenske raziskovalce dojemajo kot zelo koristne za družbo, usmerjene v prihodnost, odgovorne in prizadevne. Anketiranci ocenjujejo, da znanost v Sloveniji prispeva k razvoju Slovenije in je koristna družbi, čeprav več kot tretjina vprašanih meni, da gre za slabo plačan poklic. Več kot 75% vprašanih se strinja s trditvijo, da lahko znanost olajšala vsakdanje življenje. Avtorji zaključijo prispevek z razpravo o pomembnosti komuniciranja znanosti.
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Raman, Adhiti T., Venkat N. Krovi, and Matthias J. A. Schmid. "Empowering Graduate Engineering Students With Proficiency in Autonomy." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-86316.

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A new class of distributed, autonomous systems is emerging, capable of exploiting multimodal distributed and networked spatial and temporal data (at significantly larger scales). A renaissance autonomy engineer requires proficiency in both traditional engineering concepts as well as a systems engineering skillset for implementing the ensuing complex systems. In this paper, we describe goals, development and first offering of a scaffolded course: “AuE 893 Autonomy: Science and Systems” to begin addressing this goal. Geared towards graduate engineering students, with limited prior exposure, the course complements the concepts from traditional courses (on mobile-robotics) with experiential hands-on system-integration efforts (building on the F1tenth.org kits). The staged course structure initially builds upon open-source Robotics Operating System (ROS) tutorials on simulated systems (Gazebo/RViz) with networked communication; Hardware-in-the-loop realization (with a Turtlebot platform) then aids the exploration (and reinforcement) of autonomy concepts. The course culminates in a final-project comprising performance testing with student-team integrated scaled Autonomous Remote Control cars (based on the F1tenth.org parts-list). All three student teams were successful in navigating around a closed racecourse at speeds of 10–15 miles per hour, using Simultaneous Localization and Mapping (SLAM) for situational awareness and obstacle-avoidance. We conclude with discussion of lessons-learnt and opportunities for future improvement.
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Reports on the topic "Slab tear"

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Rahmani, Mehran, Xintong Ji, and Sovann Reach Kiet. Damage Detection and Damage Localization in Bridges with Low-Density Instrumentations Using the Wave-Method: Application to a Shake-Table Tested Bridge. Mineta Transportation Institute, September 2022. http://dx.doi.org/10.31979/mti.2022.2033.

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This study presents a major development to the wave method, a methodology used for structural identification and monitoring. The research team tested the method for use in structural damage detection and damage localization in bridges, the latter being a challenging task. The main goal was to assess capability of the improved method by applying it to a shake-table-tested prototype bridge with sparse instrumentation. The bridge was a 4-span reinforced concrete structure comprising two columns at each bent (6 columns total) and a flat slab. It was tested to failure using seven biaxial excitations at its base. Availability of a robust and verified method, which can work with sparse recording stations, can be valuable for detecting damage in bridges soon after an earthquake. The proposed method in this study includes estimating the shear (cS) and the longitudinal (cL) wave velocities by fitting an equivalent uniform Timoshenko beam model in impulse response functions of the recorded acceleration response. The identification algorithm is enhanced by adding the model’s damping ratio to the unknown parameters, as well as performing the identification for a range of initial values to avoid early convergence to a local minimum. Finally, the research team detect damage in the bridge columns by monitoring trends in the identified shear wave velocities from one damaging event to another. A comprehensive comparison between the reductions in shear wave velocities and the actual observed damages in the bridge columns is presented. The results revealed that the reduction of cS is generally consistent with the observed distribution and severity of damage during each biaxial motion. At bents 1 and 3, cS is consistently reduced with the progression of damage. The trends correctly detected the onset of damage at bent 1 during biaxial 3, and damage in bent 3 during biaxial 4. The most significant reduction was caused by the last two biaxial motions in bents 1 and 3, also consistent with the surveyed damage. In bent 2 (middle bent), the reduction trend in cS was relatively minor, correctly showing minor damage at this bent. Based on these findings, the team concluded that the enhanced wave method presented in this study was capable of detecting damage in the bridge and identifying the location of the most severe damage. The proposed methodology is a fast and inexpensive tool for real-time or near real-time damage detection and localization in similar bridges, especially those with sparsely deployed accelerometers.
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Lippert, David, Marshall Thompson, and Charles Wienrank. Performance of Interstate Rubblization in Illinois. Illinois Center for Transportation, July 2021. http://dx.doi.org/10.36501/0197-9191/21-005.

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In Illinois, hot-mix asphalt overlaid concrete pavements typically exhibit reflective cracking of joints and cracks from the pavement below, resulting in shortened life and maintenance issues. Over the years, various patching, fabric, and crack and seat techniques were attempted with few positive results. This led to more aggressive techniques to eliminate the slab action of the concrete pavement where the pavement would be broken or rubblized into pieces typically less than 12 inches. Since the first rubblizing project in 1990, policy, procedures, and specifications have evolved to the point that rubblization is the mainstream option in dealing with problematic concrete pavements. This report summarizes the performance of several interstate rubblizing projects in Illinois by analyzing available data in Illinois Department of Transportation’s pavement management system. Condition rating survey data allowed the serviceability of these projects to be evaluated by surface mix types and asphalt performance grades. Traffic in the form of 18,000 lb equivalent single axle loads was determined for the projects to evaluate fatigue and rutting as well as compare section performance to the design procedure. The research team reviewed plans, design procedures, and specifications to determine best practices and identify where improvements might be made. Data showed that the use of stone matrix asphalt surface mixtures and mixes using PGXX-28 asphalt binders provides improved performance. Overall, rubblizing has shown good to excellent performance. To provide additional life with improved performance, recommendations include adopting softer asphalt grades, increasing the use of stone matrix asphalt, and improving procedures for protecting culverts.
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