Relevant bibliographies by topics / Simulated HAZ

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Simulated HAZ'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "Simulated HAZ"

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Liu, Yu, Ai Qing Ma, and Bin Feng. "Simulated HAZ Continuous Cooling Transformation of X90 Pipeline Steel." Materials Science Forum 850 (March 2016): 905–9. http://dx.doi.org/10.4028/www.scientific.net/msf.850.905.

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In this paper, the simulation heat affected zone (HAZ) continuous cooling transformation (SHCCT) curve of X90 pipeline steel was drew by using Gleeble 3500 simulator. The results show that the trend of hardening of the weld HAZ of X90 pipeline steel was moderate, and softening tendency was not significant. When cooling rate was between 1°C/s and 10°C/s, the microstructure of X90 pipeline steel weld HAZ were composed of granular bainite and lath bainite. The recommended welding heat input of X90 pipeline steel was between 21kJ/cm and 66.4kJ/cm, and the weld preheating temperature was controlled
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HA, JI-WOONG, JUNG-HAN SONG, HOON HUH, JI-HO LIM, and SUNG-HO PARK. "DYNAMIC MATERIAL PROPERTIES OF THE HEAT-AFFECTED ZONE (HAZ) IN RESISTANCE SPOT WELDING." International Journal of Modern Physics B 22, no. 31n32 (2008): 5800–5806. http://dx.doi.org/10.1142/s0217979208051194.

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This paper is concerned with a methodology to identify the dynamic material properties of the heat-affected zone (HAZ) near the base metal in a resistance spot weld process at various strain rates. In order to obtain the dynamic material properties of the HAZ in the spot-welded steel sheet, specimens are prepared to have similar material properties, hardness and microstructure to the actual HAZ. Such thermally simulated specimens are fabricated with the material thermal cycle simulator (MTCS) and compared with the real one for the hardness and microstructure. Dynamic tensile tests are then con
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Devaney, Ronan J., Heiner Oesterlin, Padraic E. O’Donoghue, and Sean B. Leen. "Cyclic plasticity and low cycle fatigue damage characterisation of thermally simulated X100Q heat affected zone." MATEC Web of Conferences 165 (2018): 03002. http://dx.doi.org/10.1051/matecconf/201816503002.

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This paper presents the cyclic plasticity and low cycle fatigue (LCF) damage characterisation of thermally simulated heat affected zone (HAZ) for API 5L X100Q weldments. Microstructures representative of the HAZ for two cooling rates are generated using a Gleeble thermomechanical simulator for manufacture of strain-controlled cyclic plasticity test specimens. The simulated HAZ specimens are subjected to a strain controlled test programme which examines the cyclic effects of strain-range and the tensile response at room temperature. A modified version of the Chaboche rate independent plasticity
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Lundin, C. D., and C. Y. P. Qiao. "Microstructural Investigation of the Weld HAZ in a Modified 800H Alloy." Journal of Engineering for Gas Turbines and Power 116, no. 3 (1994): 629–34. http://dx.doi.org/10.1115/1.2906866.

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Detailed metallographic investigations of Gleeble simulated HAZ samples in modified 800H were performed. Precipitate dissolution, gain growth, HAZ liquation and the hardness degradation behavior in modified 800H were also addressed. Results of this study agree with previous HAZ hot cracking and softening behavior evaluations.
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Chen, Zhong Bing, Qiu Hua Zhu, Jian Xing Song, and Yan Liu. "High Temperature Plasticity of TP347H Stainless Steel Welded Joint Heat Affected Zone." Key Engineering Materials 881 (April 2021): 19–24. http://dx.doi.org/10.4028/www.scientific.net/kem.881.19.

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Simulated Heat Affected Zone (HAZ) samples of TP347H stainless steel welded joint with 800-1380°C peak temperature thermal cycles were produced using Gleeble 3180 thermal mechanical simulator. 600°C constant speed tensile tests for simulated HAZ samples were carried out, and the precipitates of the simulated samples were analyzed by EDAX. The results show that the lowest Reduction of Area (RoA) was around 53% - 56% in 900-1150°C, which was about 15% lower than the maximum RoA in 800-1380°C. The reasons for decrease of HAZ high temperature plasticity were related to the precipitation of NbC. Th
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Gáspár, Marcell. "Effect of Welding Heat Input on Simulated HAZ Areas in S960QL High Strength Steel." Metals 9, no. 11 (2019): 1226. http://dx.doi.org/10.3390/met9111226.

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When the weldability of high strength steels is analyzed, it is the softening in the heat-affected zone (HAZ) that is mostly investigated, and the reduction of toughness properties is generally less considered. The outstanding toughness properties of quenched and tempered high strength steels cannot be adequately preserved during the welding due to the unfavorable microstructural changes in the HAZ. Relevant technological variants (t8/5 = 2.5–100 s) for arc welding technologies were applied during the HAZ simulation of S960QL steel (EN 10025-6) in a Gleeble 3500 physical simulator, and the eff
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Wang, Qing Feng, Cheng Jia Shang, R. D. Fu, Ya Nan Wang, and Wayne Chen. "Physical Simulation and Metallurgical Evaluation of Heat-Affected Zone during Laser Welding of Ultrafine Grain Steel." Materials Science Forum 475-479 (January 2005): 2717–20. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.2717.

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Two major challenges in relation to laser welding are abrupt change in metallurgical aspects and actual assessment of the mechanical properties due partly to very narrow heat affected zone (HAZ) and partly to high mechanical properties gradient. The rapid thermal cycle of laser welding imposed on the HAZ was physically simulated using a Gleeble™ dynamic simulator equipped with a special isothermal quenching device (ISO-Q™), and a relatively large volume of HAZ with a homogeneous microstructure was obtained. The thermal cycles were determined from actual laser welding followed by laser temperin
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Pratap, Singh, and Judit Kovácsb. "Comparative HAZ softening analysis of three different automotive aluminium alloys by physical simulation." Zavarivanje i zavarene konstrukcije 66, no. 1 (2021): 23–38. http://dx.doi.org/10.5937/zzk2101023p.

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The development of high strength aluminium alloy has revolutionized the automotive industry with innovative manufacturing and technological process to provide high-performance components, weight reduction and also diversified the application field and design consideration for the automotive parts that work under severe conditions, but the selection of proper production parameters is most challenging task to get excellent results. Growing industrial demand of aluminium alloys led to the development of new welding technologies, processes and studies of various parameters effects for its intended
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Mohammadi, Farzad, Faysal Fayez Eliyan, and Akram Alfantazi. "Corrosion of simulated weld HAZ of API X-80 pipeline steel." Corrosion Science 63 (October 2012): 323–33. http://dx.doi.org/10.1016/j.corsci.2012.06.014.

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Wu, Rui, Rolf Sandstro¨m, and Facredin Seitisleam. "Influence of Extra Coarse Grains on the Creep Properties of 9 Percent CrMoV (P91) Steel Weldment." Journal of Engineering Materials and Technology 126, no. 1 (2004): 87–94. http://dx.doi.org/10.1115/1.1631025.

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With modern welding methods, satisfactory microstructures in 9%CrMoV (P91) steel can be obtained with a modest variation in hardness and prior austenite grain size. However, there is always a risk that significant deviations in the properties can be obtained, if the welding parameters are not optimized. In the present paper the role of extra coarse grains in the heat affected zone (HAZ) has been studied. Creep tests were carried out at 600°C for parent metal, weld metal, cross weld, simulated extra coarse grained HAZ, and simulated intercritical HAZ of a 9%CrMoV (P91) steel. The parent metal,
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Dissertations / Theses on the topic "Simulated HAZ"

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Chang, Chung-Shing. "Fracture processes in simulated HAZ microstructures of stainless steel." Thesis, University of Birmingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367606.

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Stritch, Kyle B. "Microstructural Evolution and Mechanical Properties in Simulated Heat Affected Zone Regions of Grade 91 Steel Welds." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1471444438.

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Laitinen, R. (Risto). "Improvement of weld HAZ toughness at low heat input by controlling the distribution of M-A constituents." Doctoral thesis, University of Oulu, 2006. http://urn.fi/urn:isbn:9514280016.

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Abstract This research work focuses on how to improve the toughness of heat affected zones (HAZs) of low heat input welds in the case of high strength thermomechanically processed (TMCP) and recrystallization controlled rolled and accelerated cooled (RCR) plates with yield strengths of 355–500 MPa. Experimental work was aimed at the investigation of the intragranular nucleation of acicular ferrite or bainite in hot-rolled plates and the evaluation of the Charpy V and CTOD toughness of the most critical sub-zones of the weld HAZ using simulated specimens with a cooling time t8/5 = 5 s. The zon
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Trainer, Melissa Grady. "Laboratory studies of organic haze aerosols in simulated planetary atmospheres." Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3207747.

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Byrtus, Roman. "Simulace pohybu neholonomních mechanismů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400422.

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Tato práce se zabývá simulacemi neholonomních mechanismů, konkrétně robotických hadů. V práci jsou uvedeny základní poznatky geometrické teorie řízení. Tyto poznatky jsou využity k odvození řídících modelů robotických systémů a následně jsou tyto modely simulovány v prostředí V-REP.
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Egarhos, Daniel J. (Daniel John) Carleton University Dissertation Psychology. "The influence polygraph and rape expert testimony has on the verdicts of jurors in a simulated sexual assault trail." Ottawa, 1993.

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Hillhouse, Elizabeth Ann. "An investigation into the effects of a simulated human gastro-intestinal tract has on Bacillus cereus and Bacillus weihenstephanensis viability and pathogenicity." Thesis, University of St Andrews, 2012. http://hdl.handle.net/10023/3203.

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Bacillus cereus is one of the known causes of diarrhoeal food poisoning. In their natural environment of soil surviving as spores facilitates their colonisation of raw food ingredients enabling their access to the food chain. Recently psychrotrophic strains of B. cereus have been reclassified based on divergent cold shock gene (cspA) sequences and renamed B. weihenstephanensis. It is the modified cspA gene that is thought to confer the psychrotolerant phenotype witnessed by these strains. Aside from cspA, B. cereus and B. weihenstephanensis are closely related, leading to questions about its p
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Harkouss, Rami. "Effet du salage et du séchage sur la dynamique d’évolution de la protéolyse, de la structure et de la texture lors de la fabrication d’un jambon sec. Développement d’un modèle de « jambon numérique » couplant transferts d’eau, de sel et protéolyse." Thesis, Clermont-Ferrand 2, 2014. http://www.theses.fr/2014CLF22446/document.

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Du fait de problèmes de santé publique, l’industrie agroalimentaire doit réduire la quantité de sel (chlorure de sodium) dans les aliments, et donc dans les charcuteries. Lors de la fabrication des jambons secs, une diminution du taux de sel pourrait se traduire par des problèmes de texture dus à une protéolyse excessive pouvant nuire à l’étape de tranchage industriel, et aussi par des problèmes de stabilité microbiologique. Dans ce contexte, les objectifs de cette thèse sont : (1) d’étudier le lien entre l’évolution de la protéolyse, de la texture et de la structure, tout au long des différen
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Zábojník, Jakub. "Využití knihovny HAM-Tools pro simulaci tepelného chování rodinného domu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231126.

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In terms of master’s thesis HAM-Tools library designed for MATLAB/Simulink was modified for the use in simulations of houses in the Czech Republic. Modified library and its parts were described in detail and tested by the simulation of the one-zone and two-zones models of the house. The simulations of models with same parameters were also realized in program TRNSYS. The corresponding results achieved in mentioned simulation tools were compared to each other. The one-zone model created by using HAM-Tools library is tested by the simulation of ventilating, heating, cooling, and sources of moistu
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Vallés, Lluch Ana. "P(EMA-co-HEA)/SiO2 hybrid nanocomposites for guided dentin tissue regeneration: structure, characterization and bioactivity." Doctoral thesis, Universitat Politècnica de València, 2008. http://hdl.handle.net/10251/3795.

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Se sintetizaron nanocompuestos híbridos en bloque de poli(etil metacrilato-co-hidroxietil acrilato) 70/30 wt%/sílice, P(EMA-co-HEA)/SiO2, con distintas proporciones de sílice hasta el 30 wt%. El procedimiento de síntesis consistió en la copolimerización de los monómeros orgánicos durante la polimerización sol-gel simultánea de tetraetoxisilano, TEOS como precursor de sílice. El TEOS se hidroliza eficientemente y condensa dando lugar a sílice, y presenta una distribución homogénea en forma de agregados inconexos de nanopartículas de sílice elementales en los híbridos con bajos contenidos de sí
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Books on the topic "Simulated HAZ"

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Dotger, Benjamin H. I had no idea!, clinical simulations for teacher development. Information Age Pub., Inc., 2013.

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Tucci, Mario, and Marco Garetti, eds. Proceedings of the third International Workshop of the IFIP WG5.7. Firenze University Press, 2002. http://dx.doi.org/10.36253/88-8453-042-3.

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Contents of the papers presented at the international workshop deal with the wide variety of new and computer-based techniques for production planning and control that has become available to the scientific and industrial world in the past few years: formal modeling techniques, artificial neural networks, autonomous agent theory, genetic algorithms, chaos theory, fuzzy logic, simulated annealing, tabu search, simulation and so on. The approach, while being scientifically rigorous, is focused on the applicability to industrial environment.
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Bauer, Dominique, and Camilla Murgia, eds. Ephemeral Spectacles, Exhibition Spaces and Museums. Amsterdam University Press, 2021. http://dx.doi.org/10.5117/9789463720908.

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This book examines ephemeral exhibitions from 1750 to 1918. In an era of acceleration and elusiveness, these transient spaces functioned as microcosms in which reality was shown, simulated, staged, imagined, experienced and known. They therefore had a dimension of spectacle to them, as the volume demonstrates. Against this backdrop, the different chapters deal with a plethora of spaces and spatial installations: the Wunderkammer, the spectacle garden, cosmoramas and panoramas, the literary space, the temporary museum, and the alternative exhibition space.
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Office, United States Government Accountability. Contract management: Service contract approach to aircraft simulator training has room for improvement : report to the Subcommittee on Readiness, Committee on Armed Services, House of Representatives. GAO, 2006.

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Operations, Thiokol Corporation Space, and George C. Marshall Space Flight Center., eds. RSRM top hat cover simulator lightning test final report. Thiokol Corporation, Space Operations, 1990.

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Cropsey, Christopher L., Scott C. Watkins, and Matthew D. McEvoy. Cognitive Aids in Current Practice. Edited by Matthew D. McEvoy and Cory M. Furse. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780190226459.003.0003.

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The use of cognitive aids in clinical practice has been encouraged for almost 100 years. However, while the use of such aids in the aviation and nuclear power industries, the overall uptake and use in healthcare has been lacking until recent years. Recent publications are beginning to demonstrate not only the process by which a cognitive aid should be created, but also the proper methods by which to test and implement use in simulated and clinical practice. This chapter discusses the evolution of the science of cognitive aids with a particular focus on how the reader should consider their use
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Gelman, Andrew, and Deborah Nolan. Teaching statistics to social scientists. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198785699.003.0014.

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This chapter provides advice on how to teach applied regression and multilevel models to students from a broad set of fields, especially the social sciences. These students typically want to fit and understand models beyond what they get from computer output. They tend to be highly motivated because they are trying to solve real problems in their applied fields. The course has little mathematics, and instead employs the computer to fit and simulate models. The chapter provides a step-by-step plan of the first two weeks of classroom activities in this applied regression course.
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Allen, Michael P., and Dominic J. Tildesley. Rare event simulation. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198803195.003.0010.

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The development of techniques to simulate infrequent events has been an area of rapid progress in recent years. In this chapter, we shall discuss some of the simulation techniques developed to study the dynamics of rare events. A basic summary of the statistical mechanics of barrier crossing is followed by a discussion of approaches based on the identification of reaction coordinates, and those which seek to avoid prior assumptions about the transition path. The demanding technique of transition path sampling is introduced and forward flux sampling and transition interface sampling are conside
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Basu, Sanjay. Modeling Large-Scale Epidemics. Edited by Sanjay Basu. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780190667924.003.0009.

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Previous chapters ignored a critical aspect of modeling some major diseases: the infectious nature of many diseases. For infectious diseases, the risk of getting the disease is related to how many people are infectious at a given time: the more infectious people in the area, the higher the risk of infection among susceptible people. In a typical Markov model, we can’t account for this basic feature of infectious diseases because the risk of moving from one state (healthy) to another state (diseased) is assumed to be constant. In this chapter, the author introduces a simulation modeling framewo
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Reader, Ian. 1. Pilgrimage around the world. Oxford University Press, 2015. http://dx.doi.org/10.1093/actrade/9780198718222.003.0001.

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Pilgrimage is a global human phenomenon spanning cultures, religions, and continents. Some pilgrimage centres attract millions of pilgrims each year creating an important ‘spiritual tourism’ industry. ‘Pilgrimage around the world’ shows that some sites are not faith-specific; Jerusalem has great significance in Judaism, Christianity, and Islam, and is a site of pilgrimage for all three. Not all pilgrimage places are internationally significant, however—many are essentially local in nature and involve replications of more famed and distant ones, allowing people who cannot travel far to simulate
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Book chapters on the topic "Simulated HAZ"

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Linton, V. M., and J. E. King. "Cleavage Initiation in Simulated Haz Microstructures." In Fracture of Engineering Materials and Structures. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3650-1_98.

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Gáspár, Marcell, András Balogh, and János Lukács. "Toughness Examination of Physically Simulated S960QL HAZ by a Special Drilled Specimen." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51189-4_40.

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Bilke, Lars, Thomas Fischer, Dmitri Naumov, et al. "Code Descriptions." In GeomInt–Mechanical Integrity of Host Rocks. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61909-1_7.

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AbstractThe FFS method (see Sect. 10.1007/978-3-030-61909-1_3) was developed to simulate direct shear tests. To provide a tool for the project work and get things easier done a graphical user interface (GUI) was also created. The GUI simply calls all necessary functions by letting the user either fill form fields or choose input files from the working folder. The rock parameters and the conditions of the direct shear test with the normal stress levels and shear displacements have to be selected. If an experiment is simulated the lab results can be selected as a text file so a visual comparison is possible. The geometry has to be loaded as a point cloud or an artificial surface can be generated. With small modifications the code can do multiple executions using artificial surfaces.
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Yuan, Haibo, Xiaoli Zhou, Zheqian Zhang, and Fanghui Xu. "Study the Transmittance Properties of Light Sources Under Simulated Hazy Condition." In Lecture Notes in Electrical Engineering. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53934-8_32.

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Fisher, Michael E. "How to Simulate Fluid Criticality: The simplest ionic model has Ising behavior but the proof is not so obvious!" In International Conference on Theoretical Physics. Birkhäuser Basel, 2003. http://dx.doi.org/10.1007/978-3-0348-7907-1_33.

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"Models of Artificial Multi-Polynomial Higher Order Neural Networks." In Emerging Capabilities and Applications of Artificial Higher Order Neural Networks. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-3563-9.ch002.

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This chapter introduces multi-polynomial higher order neural network models (MPHONN) with higher accuracy. Using Sun workstation, C++, and Motif, a MPHONN simulator has been built. Real-world data cannot always be modeled simply and simulated with high accuracy by a single polynomial function. Thus, ordinary higher order neural networks could fail to simulate complicated real-world data. But MPHONN model can simulate multi-polynomial functions and can produce results with improved accuracy through experiments. By using MPHONN for financial modeling and simulation, experimental results show that MPHONN can always have 0.5051% to 0.8661% more accuracy than ordinary higher order neural network models.
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Zhang, Ming. "Artificial Multi-Polynomial Higher Order Neural Network Models." In Artificial Higher Order Neural Networks for Modeling and Simulation. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2175-6.ch001.

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This chapter introduces Multi-Polynomial Higher Order Neural Network (MPHONN) models with higher accuracy. Using Sun workstation, C++, and Motif, a MPHONN Simulator has been built. Real world data cannot always be modeled simply and simulated with high accuracy by a single polynomial function. Thus, ordinary higher order neural networks could fail to simulate complicated real world data. However, the MPHONN model can simulate multi-polynomial functions, and can produce results with improved accuracy through experiments. By using MPHONN for financial modeling and simulation, experimental results show that MPHONN can always have 0.5051% to 0.8661% more accuracy than ordinary higher order neural network models.
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Rihane, Reda, Abdellatif Khattabi, Nabil Rifai, and Said Lahssini. "Modeling Hydrological Functioning of a Drainage Basin With Relation to Land Use Change in the Context of Climate Change." In Geospatial Technologies for Effective Land Governance. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-5939-9.ch012.

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Ourika basin in Morocco has very steep slopes with impermeable ground favoring water flows and flooding. History has shown deadly flood events. Floods are becoming recurrent and exacerbated not only by human activities that degrade soil and vegetation cover, accelerating erosion and quick water flows, but also by climate change. In fact, the basin has experienced a very strong dynamic of its vegetation cover, during the last 30 years, and has been subject to climate change impacts. This study is devoted to evaluating the impact of land cover change, mainly vegetation cover, on hydrological functioning of the basin. The HEC-HMS model was used to simulate basin hydrological response, according to two scenarios of land cover change. The first scenario simulates deforestation and urbanization impacts on peak flows, showing an increase of the peak flow by 31.68%. The second evaluates the impact of both reforestation actions and proscription of forest harvesting in the region. The simulated results showed a decline of 17.25% in peak flows, except for heavy precipitation events.
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Maqousi, Ali, and Tatiana Balikhina. "Wire and Wireless Local Area Networks Simulation." In Simulation in Computer Network Design and Modeling. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-0191-8.ch024.

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There has been a tremendous increase in the use of wire/wireless Local Area Networks (LAN) with different network configurations. Therefore, it is vital to have an accurate and a reliable generic platform to enable network developers, managers, security mangers, researchers, and students evaluating and investigating the performance of LANs of different technologies and configurations. Many network simulators have been developed throughout the years, such as: the Optimized Network Engineering Tool (OPNET), the Network Simulator (NS), the Global Mobile Simulator (GloMoSim), etc. One of the most widely-used and powerful general-purpose network simulators is OPNET, which is an object-oriented simulation environment. This chapter provides two walk through tutorials on using OPNET IT Guru (Academic Edition of OPNET) for wire/wireless LANs simulations. These tutorials demonstrate in step-by-step fashion, the procedures of initiating new simulation, setting up the simulation parameters, running the simulation, and viewing the results. The first tutorial (Tutorial #1) simulates a wired LAN of 10 computers and one server connected to a single switch, and the second tutorial (Tutorial #2) simulates a wireless ad hoc network of 10 mobile nodes and one server. This chapter demonstrates that OPNET IT Guru is a powerful tool that can be used by a range of professional users to simulate, evaluate, and investigate the performance of wire and wireless LANs. Moreover, it encourages and helps students to easily perform network simulation for better understanding of the network performance under different network conditions.
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Gil-Quijano, Javier. "Mechanisms of Automated Formation and Evolution of Social-Groups." In Social Simulation. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-522-1.ch012.

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In this chapter, we present a multi-agent system that models and simulates the dynamics of intra-urban mobility through the automated formation and evolution of both groups of households and groups of housing-units. We consider global rules of evolution instead of individual events to represent the evolution of both the population and the housing-stock. The moving mechanism is modelled by interactions between groups and urban-sectors agents in a simulated housing market. We have tested this system on the basis of several censuses datasets of Bogotá city. The evolution of groups has been simulated over 20 years and compared to real data. The results of group formation and evolution mechanisms have been compared to classes produced by classical classification methods. Very good correlations have been found. The simulated population has been compared to real distributions of several Bogotá districts and appears to be close for an important number of them.
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Conference papers on the topic "Simulated HAZ"

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Chiang, John, and Chonghua (Cindy) Jiang. "Effect of Cooling Time on Fracture Toughness at the Simulated HAZ of DP600 Steels." In SAE 2004 World Congress & Exhibition. SAE International, 2004. http://dx.doi.org/10.4271/2004-01-0165.

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Alexandreanu, Bogdan, Yiren Chen, Ken Natesan, and Bill Shack. "SCC Behavior of Alloy 690 HAZ in a PWR Environment." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57649.

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The objective of this work is to determine the cyclic and stress corrosion cracking (SCC) crack growth rates (CGRs) in a simulated PWR water environment for Alloy 690 heat affected zone (HAZ). In order to meet the objective, an Alloy 152 J-weld was produced on a piece of Alloy 690 tubing, and the test specimens were aligned with the HAZ. The environmental enhancement of cyclic CGRs for Alloy 690 HAZ was comparable to that measured for the same alloy in the as-received condition. The two Alloy 690 HAZ samples tested exhibited maximum SCC CGR rates of 10−11 m/s in the simulated PWR environment a
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Lundin, Carl D., and Cong-Yue P. Qiao. "Microstructural Investigation of the Weld HAZ in a Modified 800H Alloy." In ASME 1993 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/93-gt-202.

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Detailed metallographic investigations of Gleeble simulated HAZ samples in modified 800H were performed. Precipitate dissolution, grain growth, HAZ liquation and the hardness degradation behavior in modified 800H were also addressed. Results of this study agree with previous HAZ hot cracking and softening behavior evaluations.
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Xiong, Qingren, Yaorong Feng, Wenzhen Zhao, et al. "Effect of Different Cooling Rate on HAZ Microstructure of 2205 Duplex Stainless Steels." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-80190.

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The effects of cooling rate ω8/5 and ω12/8 on the simulated HAZ microstructure transformation in 2205 duplex stainless steel are studied in this paper. The results indicate that 1200°C ∼ 800°C is the temperature range in which the microstructure transits the most violently for 2205 steel, and is also the cooling interval, that affects the phase proportion and microstructure morphology the most distinctly. Accordingly, It is more efficient to use ω12/8 as the parameter to investigate the microstructure transformation of welding HAZ microstructure of this material. The cooling rate in this inter
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Tabuchi, Masaaki, Hiromichi Hongo, Yongkui Li, Takashi Watanabe, and Yukio Takahashi. "Evaluation of Microstructures and Creep Damages in HAZ of P91 Steel Weldment." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26495.

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The present paper aims to clarify the Type IV creep damage process of Mod.9Cr-1Mo (Gr.91) steel weldment. Long-term creep tests for base metal and simulated fine-grained HAZ and welded joints were conducted at 550, 600 and 650 °C. Furthermore, creep tests of thick welded joint specimens were interrupted at 0.2, 0.5, 0.7, 0.8, 0.9 of rupture life, and damage distributions were measured quantitatively. It was found that creep voids initiated at the early stage of life inside the specimen thickness, and grew into cracks at the later stage of life. Experimental creep damage distributions were comp
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Hammond, R. I., and D. P. Baxter. "Corrosion Fatigue of Simulated C-Mn Steel HAZs in Sour Produced Fluids." In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57149.

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Steel Catenary Risers are subjected to both fatigue loading (from waves and tides) and corrosive environments (internal and external). The financial benefit of using C-Mn steels for SCRs is significant, therefore there is a need to establish the limitations of the material. These limitations are likely to be controlled by the HAZ, as HAZ microstructures are typically more susceptible than parent steel to cracking during exposure to a sour environment, especially if they have high hardness. Samples of API 5L X65 line pipe steel were heat treated to provide materials exhibiting two microstructur
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Barbaro, Frank, Lenka Kuzmikova, Zhixiong Zhu, and Huijun Li. "Control of Weld HAZ Properties in Modern High Strength Pipeline Steels." In 2014 10th International Pipeline Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/ipc2014-33109.

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Critical performance of modern high strength linepipe is related to the ability of the steel to maintain mechanical properties in the weld heat affected zone (HAZ). The region most susceptible to mechanical property degradation is the coarse grained HAZ, however in multipass welds, the intercritically reheated CGHAZ (ICCGHAZ) also presents challenges to maintain toughness. Currently Ti is employed to minimise austenite grain coarsening through the grain boundary pinning action of TiN precipitates. This is effective because of the high thermal stability of TiN but control of the precipitate siz
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Yoshida, Kimiaki, Masataka Yatomi, Masaaki Tabuchi, and Ken-ichi Kobayashi. "Creep Damage Evaluation for Fine Grained HAZ of Mod. 9Cr Steels Under Multi-Axial Stress Conditions." In ASME 2013 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/pvp2013-97406.

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This study is concerned with the creep damage evaluation for the fine grained heat affected zone (HAZ) of modified 9Cr steels under multi-axial stress conditions. Circumferentially notched bar creep rupture and interrupted tests have been conducted on the simulated HAZ specimens of modified 9Cr Steels. A metallographic examination has been carried out to quantify creep damage accumulation in the specimens. It has been found from void observation that growth of creep void correlates with maximum principle stress and stress triaxiality factor. Finite element predictions based on ductility exhaus
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Katsuyama, Jinya, Tohru Tobita, Yutaka Nishiyama, and Kunio Onizawa. "Mechanical and Microstructural Characterization of Heat-Affected Zone Materials of Reactor Pressure Vessel." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25561.

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In order to monitor the neutron irradiation embrittlement of the reactor pressure vessel (RPV) steels for the safe operation of light-water reactors, surveillance specimens of representative materials, i.e. base metal, weld metal and heat affected zone (HAZ), are installed in the RPV during reactor operation according to the regulation. Among these materials, HAZ specimens exhibit a relatively large scatter in Charpy impact properties because of the microstructural inhomogeneity due to multi-pass welding. ASTM E185 and JSME S NC1 stipulate the exception of HAZ specimens from surveillance test.
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Takamizawa, Hisashi, Jinya Katsuyama, Yoosung Ha, Tohru Tobita, Yutaka Nishiyama, and Kunio Onizawa. "Susceptibility to Neutron Irradiation Embrittlement of Heat-Affected Zone of Reactor Pressure Vessel Steels." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-94011.

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Abstract The heat-affected zone (HAZ) of reactor pressure vessel (RPV) steels is known to show large scatter in Charpy impact properties because it has inhomogeneous microstructure due to thermal histories of multi-pass welding for butt-welded joints. The correlation between mechanical properties and microstructure such as grain size, phase-fraction, martensite-austenite constituent, on the characteristics of HAZ of un-irradiated materials was investigated. Neutron irradiation was conducted at Japanese Research Reactor −3 (JRR-3) operated by JAEA. The neutron irradiation susceptibility was eva
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Reports on the topic "Simulated HAZ"

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Ghanipoor Machiani, Sahar, Aryan Sohrabi, and Arash Jahangiri. Impact of Regular and Narrow AV-Exclusive Lanes on Manual Driver Behavior. Mineta Transportation Institute, 2020. http://dx.doi.org/10.31979/mti.2020.1922.

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This study attempts to answer the question of how a narrow (9-ft) lane dedicated to Automated Vehicles (AVs) would affect the behavior of drivers in the adjacent lane to the right. To this end, a custom driving simulator environment was designed mimicking the Interstate 15 smart corridor in San Diego. A group of participants was assigned to drive next to the simulated 9-ft narrow lane while a control group was assigned to drive next to a regular 12-ft AV lane. Driver behavior was analyzed by measuring the mean lane position, mean speed, and mental effort (self-reported/subjective measure). In
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Cai, Yongxia, Christopher M. Wade, Justin S. Baker, et al. Implications of alternative land conversion cost specifications on projected afforestation potential in the United States. RTI Press, 2018. http://dx.doi.org/10.3768/rtipress.2018.op.0057.1811.

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The Forestry and Agriculture Sector Optimization Model with Greenhouse Gases (FASOMGHG) has historically relied on regional average costs of land conversion to simulate land use change across cropland, pasture, rangeland, and forestry. This assumption limits the accuracy of the land conversion estimates by not recognizing spatial heterogeneity in land quality and conversion costs. Using data from Nielsen et al. (2014), we obtained the afforestation cost per county, then estimated nonparametric regional marginal cost functions for land converting land to forestry. These afforestation costs were
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Ferreyra, Maria Marta, Carlos Garriga, Juan D. Martin-Ocampo, and Angélica María Sánchez Díaz. Raising College Access and Completion: How Much Can Free College Help? Banco de la República de Colombia, 2021. http://dx.doi.org/10.32468/be.1155.

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Free college proposals have become increasingly popular in many countries of the world. To evaluate their potential effects, we develop and estimate a dynamic model of college enrollment, performance, and graduation. A central piece of the model, student effort, has a direct effect on class completion, and an indirect effect in mitigating the risk of not completing a class or not remaining in college. We estimate the model using rich, student-level administrative data from Colombia, and use the estimates to simulate free college programs that differ in eligibility requirements. Among these, un
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Hamill, Daniel D., Jeremy J. Giovando, Chandler S. Engel, Travis A. Dahl, and Michael D. Bartles. Application of a Radiation-Derived Temperature Index Model to the Willow Creek Watershed in Idaho, USA. U.S. Army Engineer Research and Development Center, 2021. http://dx.doi.org/10.21079/11681/41360.

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The ability to simulate snow accumulation and melting processes is fundamental to developing real-time hydrological models in watersheds with a snowmelt-dominated flow regime. A primary source of uncertainty with this model development approach is the subjectivity related to which historical periods to use and how to combine parameters from multiple calibration events. The Hydrologic Engineering Center, Hydrological Modeling System, has recently implemented a hybrid temperature index (TI) snow module that has not been extensively tested. This study evaluates a radiatative temperature index (RT
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Trim, M., Matthew Murray, and C. Crane. Modernization and structural evaluation of the improved Overhead Cable System. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/40025.

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A modernized Overhead Cable System prototype for a 689 ft (210 m) Improved Ribbon Bridge crossing was designed, assembled, and structurally tested. Two independent structural tests were executed, i.e., a component-level compression test of the BSS tower was performed to determine its load capacity and failure mode; and a system-level ‘dry’ test of the improved OCS prototype was conducted to determine the limit state and failure mode of the entire OCS. In the component-level compression test of the BSS tower, the compressive capacity was determined to be 102 kips, and the failure mode was local
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Hsueh, Gary, David Czerwinski, Cristian Poliziani, et al. Using BEAM Software to Simulate the Introduction of On-Demand, Automated, and Electric Shuttles for Last Mile Connectivity in Santa Clara County. Mineta Transportation Institute, 2021. http://dx.doi.org/10.31979/mti.2021.1822.

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Despite growing interest in low-speed automated shuttles, pilot deployments have only just begun in a few places in the U.S., and there is a lack of studies that estimate the impacts of a widespread deployment of automated shuttles designed to supplement existing transit networks. This project estimated the potential impacts of automated shuttles based on a deployment scenario generated for a sample geographic area: Santa Clara County, California. The project identified sample deployment markets within Santa Clara County using a GIS screening exercise; tested the mode share changes of an autom
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Verburg, Peter H., Žiga Malek, Sean P. Goodwin, and Cecilia Zagaria. The Integrated Economic-Environmental Modeling (IEEM) Platform: IEEM Platform Technical Guides: User Guide for the IEEM-enhanced Land Use Land Cover Change Model Dyna-CLUE. Inter-American Development Bank, 2021. http://dx.doi.org/10.18235/0003625.

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The Conversion of Land Use and its Effects modeling framework (CLUE) was developed to simulate land use change using empirically quantified relations between land use and its driving factors in combination with dynamic modeling of competition between land use types. Being one of the most widely used spatial land use models, CLUE has been applied all over the world on different scales. In this document, we demonstrate how the model can be used to develop a multi-regional application. This means, that instead of developing numerous individual models, the user only prepares one CLUE model applica
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Ama Pokuaa, Fenny, Aba Obrumah Crentsil, Christian Kwaku Osei, and Felix Ankomah Asante. Fiscal and Public Health Impact of a Change in Tobacco Excise Taxes in Ghana. Institute of Development Studies (IDS), 2020. http://dx.doi.org/10.19088/ictd.2020.003.

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This working paper predicts the fiscal and public health outcomes from a change in the excise tax structure for cigarettes in Ghana. More than 5,000 people are killed by diseases caused by tobacco every year in Ghana (Tobacco Atlas 2018). Currently the country has a unitary tax administration approach, with a uniform ad valorem tax structure on all excisable products, including tobacco. However, the ECOWAS directive on tobacco control, in line with the WHO Framework Convention on Tobacco Control (WHO 2003), recommends a simple tax structure – using a mixed excise system with a minimum specific
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Ruosteenoja, Kimmo. Applicability of CMIP6 models for building climate projections for northern Europe. Finnish Meteorological Institute, 2021. http://dx.doi.org/10.35614/isbn.9789523361416.

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In this report, we have evaluated the performance of nearly 40 global climate models (GCMs) participating in Phase 6 of the Coupled Model Intercomparison Project (CMIP6). The focus is on the northern European area, but the ability to simulate southern European and global climate is discussed as well. Model evaluation was started with a technical control; completely unrealistic values in the GCM output files were identified by seeking the absolute minimum and maximum values. In this stage, one GCM was rejected totally, and furthermore individual output files from two other GCMs. In evaluating t
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Financial Stability Report - First Semester of 2020. Banco de la República de Colombia, 2021. http://dx.doi.org/10.32468/rept-estab-fin.1sem.eng-2020.

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In the face of the multiple shocks currently experienced by the domestic economy (resulting from the drop in oil prices and the appearance of a global pandemic), the Colombian financial system is in a position of sound solvency and adequate liquidity. At the same time, credit quality has been recovering and the exposure of credit institutions to firms with currency mismatches has declined relative to previous episodes of sudden drops in oil prices. These trends are reflected in the recent fading of red and blue tonalities in the performance and credit risk segments of the risk heatmaps in Grap
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