Thematische Bibliographien / Weld plasticity

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Auswahl der wissenschaftlichen Literatur zum Thema „Weld plasticity“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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Zeitschriftenartikel zum Thema "Weld plasticity"

Malushin, N. N., D. V. Valuev, A. V. Valueva, and A. Serikbol. "Kinetic Study of the Effect of Plasticity and its Role in Stress Relaxation in the Weld Speed Steel during the Martensitic Transformation." Applied Mechanics and Materials 682 (October 2014): 58–63. http://dx.doi.org/10.4028/www.scientific.net/amm.682.58.

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It is shown that in the weld metal of the type of high-speed steels observe the effect of kinetic plasticity and he owns a defining role in stress relaxation. It is shown that the kinetic effect of plasticity can be used to control the stress in the weld details.

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Oddy, A. S., J. A. Goldak, and J. M. J. McDill. "Transformation Plasticity and Residual Stresses in Single-Pass Repair Welds." Journal of Pressure Vessel Technology 114, no. 1 (1992): 33–38. http://dx.doi.org/10.1115/1.2929009.

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Prediction of the residual stresses caused by welding is important when post-weld stress relief is not feasible. Phase changes and transformation plasticity have a significant effect on the residual stresses generated by welding and heat-treatment of some alloys. Transformation plasticity occurs when the stresses generated by the transformation of individual grains interact with the macroscopic stress state to produce plastic strains. Heuristic methods requiring empirical constants have been used in the past. A method based on the fundamental laws of plasticity and basic material properties is

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Zhang, Tian Hui, Hong Cai Fu, Wen Min Liu, Yun Chun Cheng, and Ren Ping Xu. "Influence of Weld Heat Input on Weld Joint between B610CF and 16MnR Steel." Advanced Materials Research 154-155 (October 2010): 421–24. http://dx.doi.org/10.4028/www.scientific.net/amr.154-155.421.

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The influence of weld heat input on weld joint between B610CF and 16MnR steel using shielded metal arc welding method was investigated by metallographic experiment and mechanical properties experiment. Metallographic experimental results show that in welded metal with the increasing of weld heat input the quantity of bainite is decreased and crystalline grain is larger; but in both B610CF and 16MnR steel heat affected zone, with the increasing of weld heat input there is no distinct difference in microstructure. Mechanical property experimental results show that in weld metal with the increasi

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Jang, Gab Chul, Kyong Ho Chang, and Chin Hyung Lee. "Effect of Residual Stress and Weld Metal on Hysteretic Behavior of a Welded Tubular T-Joint." Key Engineering Materials 353-358 (September 2007): 2077–80. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.2077.

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During the welding process to make welded joints, residual stress is inevitably generated and weld metal is used. Welding Residual stress is influenced on the behavior of welded joints under monotonic and cyclic loading. And the weld metals used in welding process have different mechanical characteristics than structural steels. Therefore, to accurately predict the hysteretic behavior of welded joints, the effect of residual stress and weld metal must be investigated. In this paper, the residual stress distribution in a welded tubular T-joint was investigated by carrying out three-dimensional

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Cho, Jae Hyung, Suk Hoon Kang, Kyu Hwan Oh, Heung Nam Han, and Suk Bong Kang. "Friction Stir Weld Modeling of Aluminum Alloys." Advanced Materials Research 26-28 (October 2007): 999–1002. http://dx.doi.org/10.4028/www.scientific.net/amr.26-28.999.

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Friction stir welding (FSW) process of aluminum alloys was investigated using a two-dimensional Eulerian formulation coupling viscoplastic flow and heat transfer and strain hardening. The thermal equation for the temperature was modified to stabilize temperature distribution using a Petrov-Galerkin method. The evolution equation for strength was calculated using a streamline integration method. Predicted strength was compared with experiments. Based on crystal plasticity, texture evolution was predicted during FSW of AA6061.

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Jiang, Xiao Xia, Shang Cai Fei, Shuai Zhang, Hua Ji, and Liang Zhu. "Failure Analysis of the Laser-Welded Web-Core Steel Sandwich Panel with Narrow Weld Width T-Joints." Applied Mechanics and Materials 863 (February 2017): 311–16. http://dx.doi.org/10.4028/www.scientific.net/amm.863.311.

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Static three-point bending test of the laser welded Web-core steel sandwich panel was performed. The deformation and failure of the sandwich panel with narrow weld width T-Joints were investigated. The results indicate that the deformation undertakes the following three stages: elastic deformation, plasticity deformation and T-joints cracking. The initial yield load is 25 kN, The maximum bending load is 54 kN. The high strength rate characteristic not be fully reflected. The finite simulation result shows the whole structure has no chance to reach the designed maximum value when the T-joints f

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Zhao, Li, Fu Ju Zhang, and Shao Hua Feng. "Microstructure and Mechanical Properties of Weld in 980MPa Grade Steel by Ultra-Narrow Gap Welding." Advanced Materials Research 322 (August 2011): 263–66. http://dx.doi.org/10.4028/www.scientific.net/amr.322.263.

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980MPa grade high strength low alloy steel was welded by ultra-narrow gap welding. Observed by optical metalloscope, there were large majority of equiaxial crystals in weld centers, which was the weld cross-section of 18.3%. Each weld could be compartmentalized into original microstructure zone, over heated zone and normalizing zone under next weld thermal cycle, in which the microstructures were almost the same. Through quantificational metallographic analysis, it was found there was more than 98.9% of acicular ferrite in weld metal, and other microstructures were fine. Mechanical test indica

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Matyunin, V. M., A. P. Sliva, A. Marchenkov Yu, et al. "Non-destructive testing of physical and mechanical properties of local zones in welded joints." Journal of Physics: Conference Series 2275, no. 1 (2022): 012002. http://dx.doi.org/10.1088/1742-6596/2275/1/012002.

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Abstract The influence of the “saw-tooth” type electron beam sweep on the penetration shape during electron-beam welding of 30KhGSA high-strength steel with different welding modes was investigated. Using the instrumented indentation method, the distribution of Young’s modulus, as well as the characteristics of strength and plasticity in the welded joints cross-sections, was obtained. It has been found that in the weld metal there is a sharp increase in strength characteristics, while the plasticity ones are significantly reduced. The values of the Young’s modulus also varied over the cross-se

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Gu, Lidong, Qi Tang, Yanqing Li, Fengde Liu, and Piyao Liu. "Improving Plasticity of Ferritic Stainless Steel Welded Joints via Laser Spot Control." Micromachines 14, no. 11 (2023): 2072. http://dx.doi.org/10.3390/mi14112072.

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The plasticity of welded 441 ferritic stainless steel joints was controlled by varying the laser beam spot diameter during laser welding. A stainless steel plate thickness of 1.2 mm was used. The microstructures of the welded joints were analyzed for various spot diameters. The elongation of breaks and the reduced area of tensile specimens were analyzed to study the effects of spot diameter on plasticity of the welded joints. The results showed that the weld melt width and weld column crystal size increased with the spot diameter, but isometric crystals in the center of the weld were gradually

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Chen, Yun Chun, Wen Min Liu, Hou Sen Yang, Tian Hui Zhang, and Pei Jun Yan. "Influence of Weld Parameter on Penstock Joint of B610CF-16MnR Steel." Advanced Materials Research 675 (March 2013): 270–74. http://dx.doi.org/10.4028/www.scientific.net/amr.675.270.

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Weld parameter is an important factor affecting micrographic structure and mechanical properties of weld joints. It was investigated by metallographic experiments and mechanical property experiments for the influence of weld heat input on dissimilar steel weld joint of penstock using B610CF and 16MnR steel in water conservancy and hydropower engineering using shielded metal arc welding method and mixed active gas arc welding method. Metallographic experimental results show that in weld metal with the increase of weld heat input the quantity of bainite decreases and crystalline grain is larger

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Dissertationen zum Thema "Weld plasticity"

Kutil, Petr. "Studium plasticity svaru hlubokotažných plechů svařených technologií Laser-TIG." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443205.

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This thesis is focused on laser welding and hybrid laser-TIG welding. The first part contains a brief theoretical description of these technologies. Standard quality and plasticity tests of welded joint are also mentioned. The second, experimental part, centres on the study of plasticity of tailored blanks (made of different types of HSLA steel), that are welded with laser and laser-TIG technology. The aim of the thesis is to assess process parameters effect on weld suitability for following deep drawning operation. Based on the calculated and measured figures obtained from the experiment, the

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Boåsen, Magnus. "Modeling framework for ageing of low alloy steel." Licentiate thesis, KTH, Hållfasthetslära (Inst.), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-246036.

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Ageing of low alloy steel in nuclear applications commonly takes the form as a hardening and an embrittlement of the material. This is due to the evolution of the microstructure during irradiation and at purely thermal conditions, as a combination or separate. Irradiation introduces evenly distributed solute clusters, while thermal ageing has been shown to yield a more inhomogeneous distribution. These clusters affect the dislocation motion within the material and results in a hardening and in more severe cases of ageing, also a decreased work hardening slope due to plastic strain localization

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Kotsou, Ilios. "Emotional plasticity: the impact of the development of emotional competence on well-being. Conditions, effects and change processes." Doctoral thesis, Universite Libre de Bruxelles, 2017. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/246651.

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This thesis focuses on the acquisition of emotional competence (EC) skills in adults and its impact on well being. The first part of the thesis is dedicated to the definition of EC, including a review of EC in order to better understand and operationalize its main dimensions and correlates. We also present a systematic review of EC intervention studies on adult populations in order to assess their outcomes and make recommendations for the development and implementation of future interventions. We then provide a theoretical and practical framework for emotional competence (EC) based interventio

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O'Meara, Nicholas. "Developing material models for use in finite element predictions of residual stresses in ferritic steel welds." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/developing-material-models-for-use-in-finite-element-predictions-of-residual-stresses-in-ferritic-steel-welds(0f2cfa95-1d35-42be-b224-665252950efc).html.

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Nuclear reactor pressure vessels are constructed by welding low alloy steel forgings together. Welding processes can leave residual stresses which affect the RPV's resistance to fracture. Welding also induces microstructural changes and these changes have a number of associated consequences, including inelastic strains and altering mechanical properties. The extent to which these microstructural changes influence residual stress evolution during welding is not fully understood. The aim of this project is to characterise the microstructural and mechanical response of SA-508 Gr.3 Cl.1 pressure v

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Parkkali, Seija Anna. "The role of natural selection and adaptation versus phenotypic plasticity in the invasive success of Hieracium lepidulum in New Zealand." Thesis, University of Canterbury. Biological Sciences, 2008. http://hdl.handle.net/10092/1799.

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Hieracium lepidulum is an invasive weed in New Zealand. It colonises a wide range of habitats including pine plantations, scrubland, native Nothofagus forest, and mid-altitude to alpine tussock grassland, where it is competing with indigenous species. Understanding the breeding systems and population genetic structure of H. lepidulum is important for biocontrol, and aids in the understanding of evolutionary colonisation processes. H. lepidulum is a triploid, diplosporous, obligate apomict. This type of reproduction through clonal seed does not involve meiosis or fertilisation, and theoreticall

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Behravesh, Seyed Behzad. "Fatigue Characterization and Cyclic Plasticity Modeling of Magnesium Spot-Welds." Thesis, 2013. http://hdl.handle.net/10012/7651.

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The automotive industry is adopting lightweight materials to improve emissions and fuel economy. Magnesium (Mg) alloys are the lightest of engineering metals, but work is required to assess their structural strength, especially for spot-welded applications. In the present research, fatigue behavior of magnesium spot-welds was characterized and compared with steel and aluminum spot-welds. A fatigue model was proposed to predict the failure location and crack initiation life in magnesium structures. The material under investigation, AZ31B-H24 Mg alloy, and its spot-welds were characterized from

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(8741097), Ritwik Bandyopadhyay. "ENSURING FATIGUE PERFORMANCE VIA LOCATION-SPECIFIC LIFING IN AEROSPACE COMPONENTS MADE OF TITANIUM ALLOYS AND NICKEL-BASE SUPERALLOYS." Thesis, 2020.

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<div>In this thesis, the role of location-specific microstructural features in the fatigue performance of the safety-critical aerospace components made of Nickel (Ni)-base superalloys and linear friction welded (LFW) Titanium (Ti) alloys has been studied using crystal plasticity finite element (CPFE) simulations, energy dispersive X-ray diffraction (EDD), backscatter electron (BSE) images and digital image correlation (DIC).</div><div><br></div><div>In order to develop a microstructure-sensitive fatigue life prediction framework, first, it is essential to build trust in the quantitative predic

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Maas, Bea. "Birds, bats and arthropods in tropical agroforestry landscapes: Functional diversity, multitrophic interactions and crop yield." Doctoral thesis, 2013. http://hdl.handle.net/11858/00-1735-0000-0022-5E77-5.

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Bücher zum Thema "Weld plasticity"

Schlaug, Gottfried. Music, musicians, and brain plasticity. Edited by Susan Hallam, Ian Cross, and Michael Thaut. Oxford University Press, 2012. http://dx.doi.org/10.1093/oxfordhb/9780199298457.013.0018.

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This article reviews studies on the brains of musicians. Making music not only engages primary auditory and motor regions and the connections between them, but also regions that integrate and connect areas involved in both auditory and motor operations, as well as in the integration of other multisensory information. Professional instrumentalists learn and repeatedly practice associating hand/finger movements with meaningful patterns in sound, and sounds and movements with specific visual patterns (notation) while receiving continuous multisensory feedback. Learning to associate actions with p

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Ferreira Mendes, Kassio. MECANISMOS DE SOBREVIVÊNCIA DAS PLANTAS DANINHAS: REPRODUÇÃO, DISPERSÃO E DORMÊNCIA. Brazil Publishing, 2022. http://dx.doi.org/10.31012/978-65-5861-797-6.

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Weeds have great plasticity to adapt to any environmental condition, resource level or management practices when repeatedly exposed to these conditions for long periods. The plasticity of weeds is due to their diverse evolutionary genetic variability, responsible for the mechanisms of survival and adaptation of these plants. In order to understand the plasticity of weeds, it is necessary to study in more depth the various mechanisms of adaptation of weeds, such as reproduction, dispersion and dormancy. However, this will help you understand weed dominance as well as help you choose the best co

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Thomsen, Alyson. Thera-Build® with LEGO®. Jessica Kingsley Publishers, 2018. https://doi.org/10.5040/9781805014744.

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Thera-Build’ is a LEGO®-based therapeutic approach for improving children's emotional well-being. Participation in Thera-Build groups can help to boost self-esteem, address common issues such as anxiety and anger, support social development and build positive attachments. This inspiring and user-friendly guide explores the power of play, introduces the basics of brain plasticity and attachment theory, and shows exactly how to set up and run an effective Thera-Build group. A wide range of imaginative games and activities is included.

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Heimler, Benedetta, Francesco Pavani, and Amir Amedi. Implications of Cross-Modal and Intramodal Plasticity for the Education and Rehabilitation of Deaf Children and Adults. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190880545.003.0015.

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Exploring the environment without the auditory modality elicits wholesale reorganizations at both the behavioral and the neural levels throughout life. This chapter reviews changes in brain organization and behavior arising from early deafness. It depicts a multifaceted framework in both domains: the performance of deaf persons has been shown to be comparable to, better than, as well as worse than that of hearing participants. They also show brain modifications ascribable both to intramodal (within the visual system) and cross-modal plasticity (the recruitment of the deprived auditory cortex b

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Poretti, Andrea, and Michael V. Johnston. Genetic Disorders and Stroke. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199937837.003.0110.

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A variety of monogenic and polygenic genetic disorders have been linked to stroke, making it important for the clinician to keep up with the new discoveries and the potential to provide new gene-based therapies. Hematologic disorders such as sickle cell disease and thrombophilia due to mutations in prothrombin, factor V Leiden, and homocysteine metabolism are fairly well known, but mutations in mitochondrial metabolism and matrix metalloproteinases are less recognized. In addition, results of genome-wide association studies (GWAS) in stroke populations are revealing mutations that could predis

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Markus, Hugh, Anthony Pereira, and Geoffrey Cloud. Recovery and rehabilitation. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780198737889.003.0014.

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Life is never the same after stroke and the processes that can help go into picking up the pieces and returning to a pre-stroke life and lifestyle are outlined in this recovery and rehabilitation chapter. The principles of neuronal plasticity and stroke recovery are discussed as well as the rehabilitation process. Multidisciplinary team care is the cornerstone of treatment and the individual roles of team members are outlined. The common complications that can follow stroke are individually reviewed including immobility, spasticity, communication (aphasia and dysarthria) and swallowing difficu

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Stotz, Karola, and Paul Griffiths. A Developmental Systems Account of Human Nature. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198823650.003.0004.

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We argue here that to understand human nature is to understand the plastic process of human development and the diversity it produces. Drawing on the framework of developmental systems theory and the idea of developmental niche construction, we argue that human nature is not embodied in only one input to development, such as the genome, and that it should not be confined to universal or typical human characteristics. Both similarities and certain classes of differences are explained by a human developmental system that reaches well out into the ‘environment’. We point to a significant overlap

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Mazzolai, Barbara. Growth and tropism. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199674923.003.0009.

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Plants or plant parts, such as roots or leaves, have the capacity of moving by growing in response to external stimuli with high plasticity and morphological adaptation to the environment. This chapter analyses some plant features and how they have been translated in artificial devices and control. A new generation of ICT hardware and software technologies inspired from plants is described, which includes an artificial root-like prototype that moves in soil imitating the sloughing mechanism of cells at the root apex level; as well as innovative osmotic-based actuators that generate movement im

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Baz, Avner. The Alternative Conception of Language. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198801887.003.0006.

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Drawing on ideas of Wittgenstein’s and of Merleau-Ponty’s, this chapter presents a conception of language on which the method of cases—even after contextualist amendments—is fundamentally misguided and liable to lead us astray. The alternative conception combines context-sensitivity with pragmatist non-representationalism, or what Huw Price has called “functional pluralism,” while at the same time emphasizing the synchronic and diachronic plasticity of language. Following Wittgenstein and Merleau-Ponty, as well as Austin, it argues that the basic unit of linguistic sense is the speech act, an

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Klimecki, Olga M., and Tania Singer. The Compassionate Brain. Edited by Emma M. Seppälä, Emiliana Simon-Thomas, Stephanie L. Brown, Monica C. Worline, C. Daryl Cameron, and James R. Doty. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780190464684.013.9.

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This chapter focuses on the neuroscience of compassion and related social emotions such as empathy, empathic concern, or empathic distress. First, we review neuroscientific literature on empathy and relate empathy to similar social emotions. We then turn to neuroscientific research on caregiving and social connection before describing cross-sectional studies on the neural signatures of compassion. To investigate whether training of compassion can change neural functions, the neural “fingerprints” of compassion expertise were studied in both expert and inexperienced meditators. The latter inclu

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Buchteile zum Thema "Weld plasticity"

Saimoto, Akihide. "Analysis of Weld Induced Plasticity by BFM." In Mechanics and Model-Based Control of Smart Materials and Structures. Springer Vienna, 2010. http://dx.doi.org/10.1007/978-3-211-99484-9_17.

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Fischer, F. D., G. Reisner, and K. Tanaka. "A New Look at Transformation Induced Plasticity (Trip)." In Mathematical Modelling of Weld Phenomena: No. 5. CRC Press, 2025. https://doi.org/10.1201/9781003580065-26.

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Amirthalingam, Murugaiyan, M. J. M. Hermans, R. M. Huizenga, S. E. Offerman, J. Sietsma, and I. M. Richardson. "In Situ Phase Transformation Studies on a Transformation Induced Plasticity Steel Under Simulated Weld Thermal Cycles Using Synchrotron Diffraction." In In-situ Studies with Photons, Neutrons and Electrons Scattering. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14794-4_9.

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Hawkins, Jennifer Anne. "Behaviour, Inclusion and Mental Well-Being." In Brain Plasticity and Learning. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-83530-9_6.

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Fasano, Gianluca, Anna Chiaradonna, and Emilio Bilotta. "LEAP-ASIA-2019 Centrifuge Test Simulation at UNINA." In Model Tests and Numerical Simulations of Liquefaction and Lateral Spreading II. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-48821-4_16.

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AbstractThis chapter describes the numerical simulations carried out at the University of Napoli Federico II in the framework of the LEAP-ASIA-2019 Simulation Exercise. An advanced critical state compatible, bounding surface plasticity model for sand has been adopted and calibrated on the available cyclic laboratory test data. The calibration has been finalized to catch the cyclic strength of the investigated sand. Centrifuge test simulations have been performed by means of the finite element code PLAXIS, which is a commercial code well widespread in the community of geotechnical practitioners

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Ogata, Shigenobu. "Free-energy-based Atomistic Study of Nucleation Kinetics and Thermodynamics of Defects in Metals; Plastic Strain Carrier “Plaston”." In The Plaston Concept. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7715-1_2.

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AbstractPlastic deformation proceeds through the nucleation and migration of localized atomistic defects, i.e., plastons (e.g., dislocations, disconnections, disclinations, and shear transformation zones), as plastic strain carriers. Revealing the atomistic details, as well as the kinetics and thermodynamics, of nucleation and migration of localized atomistic defects is crucial for achieving a fundamental understanding and control of plasticity. Free-energy-based atomistic modeling is a promising approach for achieving this task. In this paper, recent free-energy-based atomistic studies on the

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Klisz, Marcin, Debojyoti Chakraborty, Branislav Cvjetković, et al. "Functional Traits of Boreal Species and Adaptation to Local Conditions." In Advances in Global Change Research. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-15988-6_12.

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AbstractSpecies continuity under the harsh climatic conditions of the boreal forest requires trees to ensure the functioning of two main life processes, namely growth and reproduction. However, species survival becomes a challenge when environmental conditions become unstable and reach the taxa’s ecological tolerance limit. Survival in an unstable environment is possible through the concurring processes of phenotypic plasticity and local adaptation; each process has its advantages and shortcomings. Local adaptation allows attaining the best possible fitness under conditions of limited gene flo

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Vardanyan, V. H., and H. M. Urbassek. "Insight into Indentation Processes of Ni-Graphene Nanocomposites by Molecular Dynamics Simulation." In Proceedings of the 3rd Conference on Physical Modeling for Virtual Manufacturing Systems and Processes. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-35779-4_4.

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AbstractMolecular dynamics simulations provide insight into the processes underlying material plasticity and hard-ness. We demonstrate its uses here for the special case of a metal-matrix nanocomposite, viz. Ni-graphene. A series of increasingly more complex simulation scenarios is established, starting from a single-crystalline matrix over bi-crystal samples to fully polycrystalline arrangements. We find that the nanocomposite is weaker than the single-crystalline metal, since the graphene flakes are opaque to dislocation transmission and thus constrain the size of the dislocation network pro

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Azuma, K., Y. Kurobane, and Y. Makino. "Evaluation of beam-to-column connections with weld defects based on CTOD design curve approach." In Structural Failure and Plasticity. Elsevier, 2000. http://dx.doi.org/10.1016/b978-008043875-7/50209-4.

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Nguyen, N. T. "Analytical Solution for Semi-Infinite Body Subjected to 3D Moving Heat Source and Its Application in Weld Pool Simulation." In Structural Failure and Plasticity. Elsevier, 2000. http://dx.doi.org/10.1016/b978-008043875-7/50260-4.

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Konferenzberichte zum Thema "Weld plasticity"

Balch, D. K., B. P. Somerday, and C. H. Cadden. "Microstructural Effects on Hydrogen – Assisted Fracture of Austenitic Stainless Steel Welds." In CORROSION 2004. NACE International, 2004. https://doi.org/10.5006/c2004-04561.

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Abstract A multiple-pass gas tungsten arc weld in 22Cr - 13Ni - 5Mn austenitic stainless steel with matching filler exhibited dramatically reduced fracture toughness relative to the base material. This reduction in toughness was exacerbated by 6500 appm of thermally charged hydrogen. Optical and scanning electron microscopy revealed that significant amounts of the ferrite present in the weld deposit had transformed to the brittle intermetallic sigma phase as a result of the heat input of successive weld passes. Examination of the fracture surfaces and sub-surface regions showed that the lower

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Fix, David V., Ahmet Yilmaz, Lana L. Wong, John C. Estill, and Raúl B. Rebak. "Effect of Surface Stress Mitigation on the Corrosion Behavior of Alloy 22." In CORROSION 2005. NACE International, 2005. https://doi.org/10.5006/c2005-05606.

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Abstract When metallic plates are welded, for example using the Gas Tungsten Arc Welding (GTAW) method, residual tensile stresses may develop in the vicinity of the weld seam. Processes such as Low Plasticity Burnishing (LPB) and Laser Shock Peening (LSP) could be applied locally to eliminate the residual stresses produced by welding. In this study, Alloy 22 (N06022) plates were welded and then the above-mentioned surface treatments were applied to eliminate the residual tensile stresses. The aim of the current study was to comparatively test the corrosion behavior of as-welded (ASW) plates wi

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Ritter, S., and H. P. Seifert. "Stress Corrosion Cracking Behavior of Low-Alloy Reactor Pressure Vessel Steels and of a Weld Filler Material under Simulated BWR Environment." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03664.

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Abstract The stress corrosion cracking (SCC) behavior of three different nuclear grade reactor pressure vessel (RPV) steels (SA 533 B Cl.1, SA 508 Cl.2, 20 MnMoNi 5 5) and of a RPV weld filler material was characterized under simulated boiling water reactor (BWR)/normal water chemistry (NWC) conditions by constant and ripple load tests with pre-cracked fracture mechanics specimens. The experiments were performed in oxygenated high-temperature water at temperatures of either 288, 250, 200 or 150 °C. Modern high-temperature water loops, on-line crack growth monitoring (DCPD) and fractographical

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Fan, Fei, Zhao Na, Zhou Shun, et al. "Sensitivity Study of Typical Pipelines and Station Pipes in Hydrogen Environment." In CONFERENCE 2022. AMPP, 2022. https://doi.org/10.5006/c2022-17707.

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ABSTRACT This article selects a certain gas pipeline system, the director of the line on material X60 steel and typical process pipeline structure of 20 # steel elbow, yard by the metallurgical structure observation of the typical sampling position and hardness tests, hydrogen permeation test compared the hydrogen and hydrogen content of X60 steel base, girth weld and hydrogen embrittlement sensitivity of 20 # steel elbow position size. The risk of hydrogen embrittlement at sensitive sites in hydrogen environment was studied by notch tensile test. The results show that the hydrogen diffusion c

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Scheel, Jeremy E., N. Jayaraman, and Douglas J. Hornbach. "Engineered Residual Stress to Mitigate Stress Corrosion Cracking of Stainless Steel Weldments." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11283.

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Abstract Stress corrosion cracking (SCC) is the result of the combined influence of tensile stress and a corrosive environment on a susceptible material. Austenitic stainless steels including types 304L and 316L are susceptible alloys commonly used in nuclear weldments. An engineered residual stress field can be introduced into the surface of components that can reliably produce thermo-mechanically stable, deep compressive residual stresses to mitigate SCC. The stability of the residual stresses is dependant on the amount of cold working produced during surface enhancement processing. Three di

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Muránsky, Ondrej, Cory J. Hamelin, Minh Tran, Chedly Braham, and Michael C. Smith. "Assessment of Welding-Induced Plasticity in Austenitic Steel Weldments." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63358.

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Historically, weld residual stresses (WRS) have been used as the primary validation parameter for welding simulations, largely due to the importance of predicting WRS for structural integrity assessments. However, the extent of welding-induced plasticity (WIP) caused by the plastic flow of near-weld material is also an important characteristic affecting weld performance. WIP has been shown to negatively affect weld integrity, since the associated accumulation of defects (dislocations) in the material will accelerate the nucleation of macro-scale defects that lead to component failure. Informat

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Leen, S. B., M. Li, R. A. Barrett, S. Scully, D. Joyce, and P. E. O’Donoghue. "High Temperature, Multi-Material, Cyclic Plasticity of a P91 Welded Branch-Header Connection Under Cyclic Pressure." In ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45605.

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This paper presents a study on high temperature cyclic plasticity of a welded P91 T-joint under cyclic internal pressure, in the context of high temperature low cycle fatigue (HTLCF) performance of such connections. In the present work, attention is focused on the development of a multi-material model for high temperature cyclic plasticity, including the effects of the different weld-related material zones, namely, parent metal, weld metal and heat-affected zone. The cyclic plasticity behaviour of the three zones is identified from previously-published high temperature, low cycle fatigue test

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Zhou, Daowu, and Ali Mirzaee-Sisan. "Plasticity Induced Residual Stress in Pipes." In ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/omae2012-83530.

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An analytical model for predicting residual stress introduced in a pipe (away from girth weld) by plastic bending is examined. Stresses for a specific case where the pipe is bent, reverse bent and straightened are compared with results from a non-linear finite element analysis. The analytical model is then used to determine the through-thickness plasticity induced residual stress in the axial direction for a wide range of pipe geometries which are typically used offshore. It is found that the magnitude of extreme axial residual stress depends significantly on the ratio of pipe diameter to wall

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Mochizuki, Masahito, and Yoshiki Mikami. "Prediction of SCC Initiation in Weld Components by Multi-Scale Analysis Incorporating Crystal Plasticity." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25899.

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A multi-scale analysis method of microscopic stress is proposed to predict the occurrence of stress corrosion cracking (SCC) in the welded components in power plants. The method includes a macroscopic model and microscopic models. Calculation of the stress was first performed in the macroscopic model. Subsequent to this calculation, simulation of the microscopic model was conducted to evaluate the microscopic stress on the scale of the grains and microstructure. Then, the nodal temperatures and nodal displacements were transferred from the macroscopic model to the microscopic model as boundary

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Dai, H., R. Moat, A. F. Mark, and P. J. Withers. "Investigation of Transformation Induced Plasticity and Residual Stress Analysis in Stainless Steel Welds." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25325.

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The aim of this paper is to investigate the implications for weld residual stresses of martensitic transformation induced plasticity (TRIP) in stainless steel filler metal. The TRIP strains occurring during cooling under different uniaxial load levels have been obtained using digital image correlation (DIC) for a residual stress relieving low transformation temperature weld filler known to show little variant selection on cooling as a function of stress. In order to investigate the efficacy of current FE transformation plasticity models of different levels of sophistication in simulating TRIP

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Berichte der Organisationen zum Thema "Weld plasticity"

Denys, R. M. L51712 Fracture Behavior of Large-Diameter Girth Welds - Effect of Weld Metal Yield Strength Part II. Pipeline Research Council International, Inc. (PRCI), 1994. http://dx.doi.org/10.55274/r0010121.

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Fitness for purpose girth defect assessments assume the presence of a single defect. This assumption is not always fulfilled. Welds may contain many small defects. These defects, when considered individually and without interaction, are generally innocuous. However, this may be a false conclusion as to the true strength or deformation capacity of the weld because neighbouring imperfections or defects may interact and may be more severe than each individual imperfection. When non-destructive examinations reveal multiple defects, a defect recategorisation procedure has to be applied to determine

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Stuedlein, Armin, Ali Dadashiserej, and Amalesh Jana. Models for the Cyclic Resistance of Silts and Evaluation of Cyclic Failure during Subduction Zone Earthquakes. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2023. http://dx.doi.org/10.55461/zkvv5271.

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This report describes several advances in the cyclic failure assessment of silt soils with immediate and practical benefit to the geotechnical earthquake engineering profession. First, a database of cyclic loading test data is assembled, evaluated, and used to assess trends in the curvature of the CRR-N (cyclic resistance ratio - the number of equivalent cycles) relationship. This effort culminated in a plasticity index-dependent function which can be used to estimate the exponent b in the power law describing cyclic resistance, and may be used to estimate the cyclic resistance of silt soils a

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Bright, Damien, and Stefan Schaefer. Report on global connections in ocean NETs. OceanNets, 2024. http://dx.doi.org/10.3289/oceannets_d2.2.

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In this paper, we asked: Why is farming seaweed an all-purpose solution to the Earth’s problems? Who is making such a claim, and with what background assumptions about seaweed, farming, and the planet? How can ongoing climate derangement, which is frequently depicted as an unintended outcome of global industrialization, be something to respond to by “scaling up” seaweed production across the globe? We addressed these questions by taking a step back from the much circulated and disputed claims of seaweed entrepreneurs to be able to farm the global oceans. Instead, we investigated the semiotic,

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L51580 Safety Factors in the Assessment of Realistic Defects in Pipeline Welds. Pipeline Research Council International, Inc. (PRCI), 1998. http://dx.doi.org/10.55274/r0010330.

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The British Standards Institute document PD6493:1980 uses the crack tip opening displacement (CTOD) design curve as a method for determining defect acceptance levels in welded joints. The document is under revision and current proposals for the fracture section of the revised document employ three levels of assessment procedures, arranged as a progression from simple stress treatments producing conservative results, to critical analyses which incorporate more rigorous stress analyses and contain no inherent factors of safety. The proposed Level 1 assessment procedure is generally consistent wi

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