Academic literature on the topic 'Flat wasp'

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Journal articles on the topic "Flat wasp"

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AZEVEDO, CELSO O., and WESLEY D. COLOMBO. "Glutodon gen. nov. (Hymenoptera, Bethylidae), a flap-metasomed Pristocerinae from Madagascar." Zootaxa 5124, no. 1 (2022): 61–68. http://dx.doi.org/10.11646/zootaxa.5124.1.3.

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Here we describe the flat wasp genus Glutodon gen. nov., and its single species G. mikeaensis sp. nov. from Madagascar. The males of this genus are easily recognized among the other genera of Pristocerinae by having the metasoma with a conical flap expansion on the sternum VIII and the hypopygium with the anterolateral apodeme very thick along its length with a very gibbous tip, both conditions unique in Bethylidae. Glutodon gen. nov. is the sixth genus of flat wasps endemic of Madagascar, and the 30th of Pristocerinae.
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May, E. M., M. Zhao, M. Haidar, E. Rauscher, and J. D. Monnier. "MOPSS. I. Flat Optical Spectra for the Hot Jupiters WASP-4 b and WASP-52b." Astronomical Journal 156, no. 3 (2018): 122. http://dx.doi.org/10.3847/1538-3881/aad4a8.

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Falières, Elsa, and André Nel. "First fossil of the extant flat wasp genus Dissomphalus Ashmead, 1893 (Hymenoptera: Bethylidae: Pristocerinae)." Zoosystema 42, no. 15 (2020): 207–13. https://doi.org/10.5252/zoosystema2020v42a15.

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Falières, Elsa, Nel, André (2020): First fossil of the extant flat wasp genus Dissomphalus Ashmead, 1893 (Hymenoptera: Bethylidae: Pristocerinae). Zoosystema 42 (15): 207-213, DOI: 10.5252/zoosystema2020v42a15
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BRAZIDEC, MANUEL, and VINCENT PERRICHOT. "A fossil flat wasp (Hymenoptera: Bethylidae) from the early Eocene Green River Formation suggests past cosmopolitan distribution of the genus Eupsenella Westwood, 1874." Palaeoentomology 5, no. 4 (2022): 378–84. https://doi.org/10.11646/palaeoentomology.5.4.10.

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BRAZIDEC, MANUEL, PERRICHOT, VINCENT (2022): A fossil flat wasp (Hymenoptera: Bethylidae) from the early Eocene Green River Formation suggests past cosmopolitan distribution of the genus Eupsenella Westwood, 1874. Palaeoentomology 5 (4): 378-384, DOI: 10.11646/palaeoentomology.5.4.10, URL: http://dx.doi.org/10.11646/palaeoentomology.5.4.10
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Wong, Ian, Yayaati Chachan, Heather A. Knutson, et al. "The Hubble PanCET Program: A Featureless Transmission Spectrum for WASP-29b and Evidence of Enhanced Atmospheric Metallicity on WASP-80b." Astronomical Journal 164, no. 1 (2022): 30. http://dx.doi.org/10.3847/1538-3881/ac7234.

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Abstract We present a uniform analysis of transit observations from the Hubble Space Telescope and Spitzer Space Telescope of two warm gas giants orbiting K-type stars—WASP-29b and WASP-80b. The transmission spectra, which span 0.4–5.0 μm, are interpreted using a suite of chemical equilibrium PLATON atmospheric retrievals. Both planets show evidence of significant aerosol opacity along the day–night terminator. The spectrum of WASP-29b is flat throughout the visible and near-infrared, suggesting the presence of condensate clouds extending to low pressures. The lack of spectral features hinders
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Parviainen, H., E. Pallé, G. Chen, et al. "The GTC exoplanet transit spectroscopy survey." Astronomy & Astrophysics 609 (January 2018): A33. http://dx.doi.org/10.1051/0004-6361/201731113.

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Aims. We set out to study the atmosphere of WASP-80b, a warm inflated gas giant with an equilibrium temperature of ~800 K, using ground-based transmission spectroscopy covering the spectral range from 520 to 910 nm. The observations allow us to probe the existence and abundance of K and Na in WASP-80b’s atmosphere, existence of high-altitude clouds, and Rayleigh-scattering in the blue end of the spectrum. Methods. We observed two spectroscopic time series of WASP-80b transits with the OSIRIS spectrograph installed in the Gran Telescopio Canarias (GTC), and use the observations to estimate the
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Falières, Elsa, and André Nel. "First fossil of the extant flat wasp genus Dissomphalus Ashmead, 1893 (Hymenoptera: Bethylidae: Pristocerinae)." Zoosystema 42, no. 15 (2020): 207. http://dx.doi.org/10.5252/zoosystema2020v42a15.

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Colombo, Wesley D., Evgeny E. Perkovsky, and Dmitry V. Vasilenko. "The first sclerodermine flat wasp (Hymenoptera: Bethylidae) from the upper Eocene Rovno amber, Ukraine." Alcheringa: An Australasian Journal of Palaeontology 45, no. 4 (2021): 429–34. http://dx.doi.org/10.1080/03115518.2021.2006311.

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Murgas, F., E. Pallé, H. Parviainen, et al. "The GTC exoplanet transit spectroscopy survey." Astronomy & Astrophysics 605 (September 2017): A114. http://dx.doi.org/10.1051/0004-6361/201730937.

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Context. Transiting planets offer an excellent opportunity for characterizing the atmospheres of extrasolar planets under very different conditions from those found in our solar system. Aims. We are currently carrying out a ground-based survey to obtain the transmission spectra of several extrasolar planets using the 10 m Gran Telescopio Canarias. In this paper we investigate the extrasolar planet WASP-48b, a hot Jupiter orbiting around an F-type star with a period of 2.14 days. Methods. We obtained long-slit optical spectroscopy of one transit of WASP-48b with the Optical System for Imaging a
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Magnacca, Karl N. "New Sierola Cameron, 1881 (Hymenoptera: Bethylidae) from Norfolk and Phillip Islands." Austral Entomology 63, no. 2 (2024): 210–23. http://dx.doi.org/10.1111/aen.12684.

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AbstractThe flat wasp genus Sierola Cameron, 1881 is reviewed from Norfolk and Phillip Islands for the first time. Six new species are described: S. bounites sp. nov., S. dysmica sp. nov., S. idae sp. nov., S. incomitata sp. nov., S. longisetae sp. nov., and S. phillipensis sp. nov. The fauna is surprisingly large for such small islands, but consistent with high diversity of the genus found elsewhere in the Pacific. The low collecting effort and small number of specimens for most of the species suggests that more remain to be found.
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Dissertations / Theses on the topic "Flat wasp"

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Dragoi, Ion. "Comparison of optimization for non linear and linear wind resource grids." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-217558.

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The aim of this thesis is to assess how the configuration of linear and non-linearwind resource grids impacts the optimization.Three different software tools are used for this study: WAsP (linear model) includedin WindPRO, and WindSim (a non-linear model) - a CFD tool, and WindPRO forthe optimization. With the same configuration for wind resources, WAsP andWindSim will run to calculate the wind resource grids, .rsf or .wrg format, whichwill be compared in the post processing tab of WindPRO (from CFD interface).Using different optimization algorithms, the results from two software will becompar
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Waghorn, Alana. "“Turns out I was a single man, in his pants, sitting in his flat” : Finding a more fitting genre than Travel Writing for Danny Wallace’s Yes Man." Thesis, Växjö universitet, Institutionen för humaniora, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-5613.

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In  this  essay  I  look  at  the  issue of  literary genre  and  style  in  relation  to Danny Wallace’s Yes Man.  I argue that this book is not travel literature as it  has  thus  far  been  defined  but  that  it  in  fact  belongs  to  the  genre  of humour  due  to  the  evidence  that  proposes  it  is written  in  the  style  of  a parody.  I support this line of reasoning by firstly giving definitions of the terms  ‘genre’ and  ‘parody’ and by  then introducing a background  to  the subject of genre in relation to the novel.  This will consist of how genre is used in both sociological
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Maji, Moupiya. "Warped Galaxies : Recovery Of Pattern Speed, Velocity Field And The Warp Equation." Thesis, 2012. https://etd.iisc.ac.in/handle/2005/2456.

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Pattern speed is an important parameter of the density wave theory for spiral galaxies. In this thesis we have determined the pattern speed for warped galaxies (flat galaxies being a special case of this generalization) using the observable data of the surface brightness and line-of-sight velocity distribution of the galaxy. We have also extracted the transverse velocity field for the warped galaxy using the same data. Here we have simulated the data and applied our method to it and we found that our method works well in warped galaxy. We assume a parameterized model of the warp and by the met
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Maji, Moupiya. "Warped Galaxies : Recovery Of Pattern Speed, Velocity Field And The Warp Equation." Thesis, 2012. http://etd.iisc.ernet.in/handle/2005/2456.

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Pattern speed is an important parameter of the density wave theory for spiral galaxies. In this thesis we have determined the pattern speed for warped galaxies (flat galaxies being a special case of this generalization) using the observable data of the surface brightness and line-of-sight velocity distribution of the galaxy. We have also extracted the transverse velocity field for the warped galaxy using the same data. Here we have simulated the data and applied our method to it and we found that our method works well in warped galaxy. We assume a parameterized model of the warp and by the met
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Books on the topic "Flat wasp"

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Couprie, Dirk L. When the Earth Was Flat. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-97052-3.

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Fraser, Raymond. When the earth was flat. Black Moss Press, 2007.

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Conroy, Don. The bat who was all in a flap! Kildanore, 1992.

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Butt, Arthur S. Telling it as it was: A brief history of Flat Islands and an autobiography. Glovertown Literary Creations, 1990.

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Haskins, Michael. Car wash blues: A Mick Murphy Key West mystery. Five Star/Gale, 2012.

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McBain, Ed. There wasa little girl. G.K. Hall & Co., 1995.

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Menéndez, Ana. In Cuba I was a German shepherd. Grove Press, 2002.

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Shawver, Lois. And the flag was still there: Straight people, gay people, and sexuality in the U.S. military. Haworth Press, 1995.

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McBain, Ed. There was a little girl. G.K. Hall & Co., 1995.

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McBain, Ed. There was a little girl. Chivers Press, 1996.

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Book chapters on the topic "Flat wasp"

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Cheng, Haifeng, Pei Xin, Jie Liu, Fengfeng Gu, Qi Shen, and Lu Han. "Morphological Evolution and Driving Factors of Tidal Flats in the Yangtze Estuary (China) During 1998–2019." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_101.

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AbstractThis paper studies the morphological evolution and driving factors of the tidal flats in the Yangtze Estuary (YE), based on the bathymetric data over the last 20 years (1998–2019) and a three-dimensional numerical model (SWEM3D). The results show that: In the past two decades, the combined action of fluvial sediment decline and estuarine engineering has changed the morphological evolution trend of tidal flats in the YE. The fluvial sediment decline caused the decrease of suspended sediment concentration successively from the inner estuary to the mouth bar area (the outer estuary), whic
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Bartels, Grayson. "“Seriously, Don't Leave Your Flat” … I Was Doxxed." In Victimisation in the Digital Age. Routledge, 2024. http://dx.doi.org/10.4324/9781032714202-17.

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Varshneya, Arun K. "Warp Reduction in Thin Chemically Strengthened Float Glasses." In 78th Conference on Glass Problems. John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119519713.ch17.

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Malinowski, Paweł H., Tomasz Wandowski, Wiesław M. Ostachowicz, et al. "Extended Non-destructive Testing for the Bondline Quality Assessment of Aircraft Composite Structures." In Adhesive Bonding of Aircraft Composite Structures. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-319-92810-4_4.

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AbstractWe present the results of extended non-destructive testing (ENDT) methods for bond line quality assessment in adhesive joints. The results presented were derived for important application scenarios with regards to aircraft manufacturing and the in-service repair of composite structures. The electromechanical impedance (EMI), laser shock adhesion testing (LASAT), and nonlinear ultrasound scanning (NUS) were used on flat coupon samples, scarfed samples, and curved samples. The EMI method applied to the flat coupons showed some relation of the frequency shift to the level of contamination
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"FLAT WASPS." In Wasps of the World. Princeton University Press, 2024. http://dx.doi.org/10.2307/jj.7514501.84.

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"warp flat." In The Fairchild Books Dictionary of Textiles. Fairchild Books, 2021. http://dx.doi.org/10.5040/9781501365072.17666.

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Choogin, Valeriy V., Palitha Bandara, and Elena V. Chepelyuk. "Mechanisms of the weaving machine for warp release and warp tension control." In Mechanisms of Flat Weaving Technology. Elsevier, 2013. http://dx.doi.org/10.1533/9780857097859.17.

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"float warp." In The Fairchild Books Dictionary of Textiles. Fairchild Books, 2021. http://dx.doi.org/10.5040/9781501365072.6395.

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"THE LOT WAS CAST." In Black Flag. Indiana University Press, 1999. http://dx.doi.org/10.2307/jj.7263512.9.

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Choogin, Valeriy V., Palitha Bandara, and Elena V. Chepelyuk. "Warp shedding in weaving: parameters and devices." In Mechanisms of Flat Weaving Technology. Elsevier, 2013. http://dx.doi.org/10.1533/9780857097859.40.

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Conference papers on the topic "Flat wasp"

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Berthold, Matti, Anna Rapberger, and Markus Ulbricht. "Capturing Non-flat Assumption-based Argumentation with Bipolar SETAFs." In 21st International Conference on Principles of Knowledge Representation and Reasoning {KR-2023}. International Joint Conferences on Artificial Intelligence Organization, 2024. http://dx.doi.org/10.24963/kr.2024/12.

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While the flat fragment of assumption-based argumentation (ABA) is widely studied in the literature, the general, non-flat case has mostly been neglected so far. Until recently, there was no possible way to instantiate non-flat ABA in terms of an abstract argumentation framework. While this gap has been closed for complete-based ABA semantics, capturing admissible-based semantics cannot yet be achieved by looking at the relation between the instantiated arguments only; it requires augmenting arguments with their premises, hence being a semi-abstract instantiaiton. In this paper, we provide a c
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Dean, Sheldon W., and David B. Reiser. "Comparison of the Atmospheric Corrosion Rates of Wires and Flat Panels." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00455.

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Abstract A series of regression analyses were made on the one-year corrosion measurements of flat panel and wire helix specimens. There was a very strong relationship between the wire and panel results with the wire specimens yielding higher rates than the panels, but approaching the panel rates at the highest rates for all four metals. A second series of regression analyses between the residuals from the panel-helix regression was run against environmental variables. The residuals showed a significant positive relationship with sulfur dioxide for zinc, chloride for copper, and both chloride a
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Song, Min, and Bei He. "Capacity Analysis for Flat and Clustered Wireless Sensor Networks." In International Conference on Wireless Algorithms, Systems and Applications (WASA 2007). IEEE, 2007. http://dx.doi.org/10.1109/wasa.2007.145.

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Song, Min, and Bei He. "Capacity Analysis for Flat and Clustered Wireless Sensor Networks." In International Conference on Wireless Algorithms, Systems and Applications (WASA 2007). IEEE, 2007. http://dx.doi.org/10.1109/wasa.2007.30.

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Shen, Qing Sandy. "What if the earth was flat." In ACM SIGGRAPH 2012 Posters. ACM Press, 2012. http://dx.doi.org/10.1145/2343045.2343051.

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Iwamatsu, Fuminori, Katsumasa Miyazaki, Koichi Saito, Tetsuya Hamanaka, and Yoshiaki Takahashi. "Experimental Study on the Flaw Characterization of Multiple Flaws for Ductile Fracture." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57875.

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Flaw characterization of multiple flaws for ductile fractures was verified by comparing results of flat plate fracture tests and flaw combination rules in typical fitness-for-service codes. Single or double coplanar surface flaws were introduced into flat plate specimens made of Type 304 stainless steel using an electric discharge machine. Fracture tests of sixteen flat plates with flaws were conducted using a tensile testing machine. According in results of the fracture tests, collapse behavior for flat plates with double coplanar flaws was divided into two broad categories. One was coalescen
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Hojo, Kiminobu, Wataru Nishi, and Shotaro Hayashi. "CASS Fracture Tests Using Flat Plate Specimens With a Surface Flaw." In ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45325.

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JSME rules for fitness for service have flaw acceptance rules for cast austenitic stainless steel (CASS) pipes. They allow applying two-parameter and elastic-plastic fracture mechanics methods using Z-factor. However they do not clearly describe whether limit load method is applicable for the case of no or low thermal aging condition. The authors performed tensile fracture tests using flat plate specimens with a surface flaw and confirmed that limit load method is applicable in the conditions of no thermal aging and even fully saturated thermal aging with high ferrite number. Also the plate wi
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Smith, S. M., and J. E. Holliday. "Comparative Studies of Stress Intensity Factors for Nozzle Corner Cracks and Flat Plate Cracks." In ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45037.

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Using the finite element software Abaqus, the present study utilized explicit flaw modeling techniques to compute nozzle corner crack stress intensity factors for a range of semi-elliptical and sawcut cracks in a nozzle and semi-elliptical cracks in a flat plate. Additionally, a weight function method (WFM) for a semi-elliptical crack in a flat plate was evaluated. Stress intensity factors were computed for a number of loading conditions. A transient thermal stress analysis was performed for the nozzle explicit flaw models and discussed. Results of this study indicate that stress intensity fac
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Iwamatsu, Fuminori, Katsumasa Miyazaki, and Koichi Saito. "Fracture Tests of Flat Plate and Pipe With Non-Aligned Multiple Flaws." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-66169.

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Fracture tests of flat plates and pipes with non-aligned multiple flaws were conducted to investigate an appropriate flaw characterization rule for ductile fracture evaluation. Worldwide fitness-for-service codes, such as the JSME Code and the ASME Boiler and Pressure Vessels Code provide flaw characterization rules for flaws detected by in-service inspection. Since the flaw characterization rules seems to be determined based on linear-elastic fracture mechanics, developing appropriate rules remains a ductile fracture evaluation issue. Although experimental approaches have been attempted to es
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Oneida, Erin K., Eric B. Shell, John C. Aldrin, et al. "Experimental and Simulated Studies of the Variability in Eddy Current Response for Discontinuities in Complex Geometry." In ASNT Research Symposium 2023. The American Society for Nondestructive Testing Inc., 2023. http://dx.doi.org/10.32548/rs.2023.025.

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This work presents progress to extend eddy current model-based inversion of discontinuities from flat plates to complex geometries. An elongated scallop inspection was considered through experimental studies and the development of numerical models. Trends were observed indicating flaw response sensitivity to location in the flat-to-curved transition region and to slight variations in eddy current coil orientation.
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Reports on the topic "Flat wasp"

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Ray, Jason, James Kinnebrew, Ramsay Bell, and Martin Schultz. Sensitivity of simulated flaw-height estimates to phased array scan parameters. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/47403.

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Phased array ultrasonic testing (PAUT) is a nondestructive testing (NDT) technique for detecting and sizing flaws in welds. Estimates of flaw size are sensitive to a variety of PAUT scan parameters. In this study, estimates of flaw height are simulated using computer software. The sensitivity of these estimates to selected PAUT scan parameters is analyzed to identify those that have the greatest influence on estimates of flaw height. Understanding how varying different parameters within a phased array instrument affects the accuracy of flaw-height estimates helps to validate PAUT scan procedur
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Leis, B. N., and N. D. Ghadiali. L51720 Pipe Axial Flaw Failure Criteria - PAFFC Version 1.0 Users Manual and Software. Pipeline Research Council International, Inc. (PRCI), 1994. http://dx.doi.org/10.55274/r0011357.

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In the early 1970's, the Pipeline Research Council International, Inc.(PRCI) developed a failure criterion for pipes that had a predominately empirical basis. This criterion was based on flaw sixes that existed prior to pressurization and did not address possible growth due to the pressure in service or in a hydrostatic test or during the hold time at pressure in a hydrotest. So long as that criterion was used within the scope of the underlying database and empirical calibration, the results of its predictions were reasonably accurate. However, with the advent of newer steels and the related i
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Daniel. L52353 Materials Selection, Welding and Weld Monitoring - Optimized Welding Solutions for X100 Line Pipe. Pipeline Research Council International, Inc. (PRCI), 2012. http://dx.doi.org/10.55274/r0010650.

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Two rounds of pipe welding were completed to understand the influence of the welding parameters on the weld metal and HAZ properties and microstructure. Thermal data was also obtained from these welds. This information was used to refine the thermal microstructural model with predictive capabilities. Essential welding variables were validated on flat plate experiments and recommendations for welding process control established. Ultimately, these recommendations were evaluated by pipeline welding contractors to assess its viability for field application.
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Sanderson and Mudge. PR-164-093705-R01 Flaw Characterization Using Guided Waves. Pipeline Research Council International, Inc. (PRCI), 2013. http://dx.doi.org/10.55274/r0010551.

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This project was intended to implement a guided wave flaw sizing technique and to ascertain its applicability to a range of pipe and flaw sizes. The report summarizes the modeling and analysis of laser mapped real corrosion data and presents the results of the experimental work on the performance of the guided wave technique.
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Saiwan, Chintana. Mesostructural ultra thin silica film formation through admicellar technique. Chulalongkorn University, 2003. https://doi.org/10.58837/chula.res.2003.78.

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Thin silica film formation from adsolubilization of inorganic silica precursors, letra-n-butoxysilane (TBOS) and tetraethyl orthosilicate (TBOS) in admicellar polymerization were studies. Cetyltrimethylammonium bromide (CTAB) at 700 uM and octyl phenol ethoxylate or Triton X-100 at 200 uM were used as surfactant templates for adsolubilizates TBOS and TBOS respectively. For the TBOS/CTAB system, the atomic force microscopy (AFM) topographic images showed fibers, hemispheres and flat layers existing along with increase of surface coverge on the mica surface as the TBOS feed concentration was inc
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Ravazdezh, Faezeh, Julio A. Ramirez, and Ghadir Haikal. Improved Live Load Distribution Factors for Use in Load Rating of Older Slab and T-Beam Reinforced Concrete Bridges. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317303.

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This report describes a methodology for demand estimate through the improvement of load distribution factors in reinforced concrete flat-slab and T-beam bridges. The proposed distribution factors are supported on three-dimensional (3D) Finite Element (FE) analysis tools. The Conventional Load Rating (CLR) method currently in use by INDOT relies on a two-dimensional (2D) analysis based on beam theory. This approach may overestimate bridge demand as the result of neglecting the presence of parapets and sidewalks present in these bridges. The 3D behavior of a bridge and its response could be bett
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Kiefner, Vieth, and Roytman. L51749 Continued Validation of RSTRENG. Pipeline Research Council International, Inc. (PRCI), 1996. http://dx.doi.org/10.55274/r0010118.

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The original criterion for assessing the remaining strength of corroded pipe was an outgrowth of extensive work on the effects of longitudinal cracks in pressurized pipes. This work was carried out in the 1960s under sponsorship of PRCI, and it led to the development of the NG-18 surface flaw equation. Subsequently, an effort was begun under the sponsorship of Texas Eastern Transmission Corporation which continued under PRCI sponsorship which involved adapting the surface flaw equation to predicting the remaining strength of corroded pipe. The result of this work was the ASME B31G methodology
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Wilkowski. PR-276-04503-R02 Multi-Scale Mechanics and Welding Process Simulation in Weld Integrity Assessment. Pipeline Research Council International, Inc. (PRCI), 2014. http://dx.doi.org/10.55274/r0010845.

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This report is on a jointly funded project by DOE and PRCI. The DOE version of this report was separately published in 2008. This project dealt with various aspects of prediction of the stress-based and strain-based girthweld flaw tolerance of linepipe steels, as well as some supplementary investigations.
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Malinowski, Owen, Scott Riccardella, and Jason Van Velsor. PR-335-203810-R03 CT Fundamentals with Calibration and Reference Standards for Pipeline Anomaly Detection. Pipeline Research Council International, Inc. (PRCI), 2022. http://dx.doi.org/10.55274/r0012216.

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Abstract:
X-ray Computed Tomography (XRCT) was initially developed and utilized in the medical industry to image the internal structure of the human body. X-ray imaging was conceived and realized at the turn of the 20th century and subsequently, XRCT, was conceived in the middle of the 20th century and its development continues today. Near the end of the 20th century industrial cone beam XRCT for applications such as dimensional metrology branched off, including its use for identifying and dimensioning flaws. XRCT has been utilized successfully for three-dimensional imaging of flaws in the small panel c
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Leis and Mohan. L51803 Failure Criterion for Stress-Corrosion Cracking in Pipelines. Pipeline Research Council International, Inc. (PRCI), 1995. http://dx.doi.org/10.55274/r0010327.

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Failures due to stress-corrosion cracking (SCC) generally involve several adjacent, parallel, deep cracks that because of their proximity coalesce to form long flaws, which can cause ruptures.Recent studies indicate that such multiple flaws cause a local increase in compliance as compared to a single crack that represents the largest of the cracks involved.This means that the failure pressure for such a group of cracks can be poorly represented by a single flaw failure criterion, such as the Pipe Axial Flaw Failure Criterion (PAFFC) developed for the Pipeline Research Council International, In
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