Academic literature on the topic 'Hardening-Softening'

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Journal articles on the topic "Hardening-Softening"

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Chen, Junchi, Weihua Wang, and Longfeng Chen. "A Strain Hardening and Softening Constitutive Model for Hard Brittle Rocks." Applied Sciences 13, no. 5 (2023): 2764. http://dx.doi.org/10.3390/app13052764.

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To study the strain hardening and softening mechanism for hard brittle rocks, a strain hardening and softening constitutive model for hard brittle rocks is developed. First, the normalised hardening and softening factors are defined, which characterise the yield state of rock at the stages of pre-peak hardening and post-peak softening, respectively. Then, a unified strength parameter evolution model is established that can describe the nonlinear characteristics of cohesion and the internal friction angle under different confining pressures. Based on the Mohr–Coulomb criterion, a strain hardeni
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Needleman, A., S. B. Hutchens, N. Mohan, and J. R. Greer. "Deformation of plastically compressible hardening-softening-hardening solids." Acta Mechanica Sinica 28, no. 4 (2012): 1115–24. http://dx.doi.org/10.1007/s10409-012-0117-4.

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Du, Changbo, and Fu Yi. "Analysis of the Elastic-Plastic Theoretical Model of the Pull-Out Interface between Geosynthetics and Tailings." Advances in Civil Engineering 2020 (June 13, 2020): 1–22. http://dx.doi.org/10.1155/2020/5680521.

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Aiming at the strain-hardening and strain-softening phenomena between geosynthetics and tailings during pull-out tests, bilinear and trilinear shear stress-displacement softening models were proposed. The pull-out process of the hardening reinforcement was divided into the elastic stage, elastic-hardening transition stage, and pure hardening stage. The pull-out process of the softened reinforcement was divided into the elastic stage, elastic-softening transition stage, pure softening stage, softening-residual transition stage, and pure residual stage. The expressions of the interface tension,
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Xu, Zi-Han, Lin Zhan, Si-Yu Wang, Hui-Feng Xi, and Heng Xiao. "Realistic hardening-to-softening transition effects of metals over the finite strain range up to failure." Multidiscipline Modeling in Materials and Structures 17, no. 3 (2020): 525–36. http://dx.doi.org/10.1108/mmms-05-2020-0099.

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PurposeA new approach is proposed toward accurately matching any given realistic hardening and softening data from uniaxial tensile test up to failure and moreover, toward bypassing usual tedious implicit trial-and-error iterative procedures in identifying numerous unknown parameters.Design/methodology/approachFinite strain response features of metals with realistic hardening-to-softening transition effects up to eventual failure are studied for the first time based on the self-consistent elastoplastic J2-flow model with the logarithmic stress rate. As contrasted with usual approximate and inc
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Huang, Kang, Wenbo Zhu, Xin Liu, et al. "Study on Cyclic Bearing Capacity of Suction Pile Based on Equivalent Cyclic Creep Model." Sustainability 14, no. 22 (2022): 15152. http://dx.doi.org/10.3390/su142215152.

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In the process of cyclic loading, strain development not only presents the strain softening phenomenon, but also a strain hardening phenomenon, depending on the different values of static deflection stress. The strain hardening and strain softening characteristics of soft clay are studied by cyclic triaxial tests. The test results show that when the static deflection stress is zero, the value of cyclic cumulative strain is small, and the strain development presents the softening phenomenon. When the static deflection stress is greater than zero, the accumulation strain increases with increasin
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Qin, Ji Sheng, Bjørn Holmedal, and Oddsture Hopperstad. "Modelling of Strain-Path Transients in Commercially Pure Aluminium." Materials Science Forum 877 (November 2016): 662–67. http://dx.doi.org/10.4028/www.scientific.net/msf.877.662.

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In the current work, the recently proposed homogeneous anisotropic hardening (HAH) model, featuring a distorted yield surface, is applied to commercially pure aluminium. A dislocation-based hardening rule is incorporated into the HAH model to describe the transient stagnation of the hardening rate during strain reversal. A cast and homogenized material with random texture previously investigated by Mánik et al. [1] is selected. The material is prestrained either by compression or rolling, and then tested in uniaxial tension to acquire either reverse softening or orthogonal hardening. The Baus
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Cheng, Jiwen, Gang Song, Xiaosheng Zhang, Chunbai Liu, and Liming Liu. "Review of Techniques for Improvement of Softening Behavior of Age-Hardening Aluminum Alloy Welded Joints." Materials 14, no. 19 (2021): 5804. http://dx.doi.org/10.3390/ma14195804.

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The softening phenomenon of age-hardening aluminum alloy-welded joints is severe during conventional fusion welding, which increases the likelihood of stress and strain concentration in the joint during the period of service, significantly reduces the mechanical properties compared to the base metal, and represents an obstacle to the exploration of the potential structural performance. This review paper focuses on an overview of the softening phenomenon. Firstly, the welding softening mechanism and the characteristics of age-hardening aluminum alloys are clarified. Secondly, the current main r
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Han, Sang Mook, Yi Hong Guo, Xiang Guo Wu, and Qing Yong Guo. "Numerical Simulation of Quasi-Brittle Fracture in UHPFRC I-Beam as a Linear Complementarity Problem." Key Engineering Materials 419-420 (October 2009): 297–300. http://dx.doi.org/10.4028/www.scientific.net/kem.419-420.297.

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This paper presents a numerical simulation of quasi-brittle fracture in UHPFRC I-beam as a linear complementarity problem. Based on the investigation of Tin-Loi and Attard, the simulation of quasi-brittle fracture in concrete has been extended to model UHPFRC I-beam by including a tensile hardening. Fracture is simulated through a hardening-softening fracture constitutive law in tension and a softening fracture constitutive law in shear at the boundary nodes, with the material within the triangular unit remaining linear elastic. LCP is used to formulate the path-dependent hardening-softening b
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Cohen, Joanna E., Paul W. McDonald, and Peter Selby. "Softening up on the hardening hypothesis." Tobacco Control 21, no. 2 (2012): 265–66. http://dx.doi.org/10.1136/tobaccocontrol-2011-050381.

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Darinskaya, E. V., E. A. Petrzhik, Yu M. Ivanov, S. A. Erofeeva, and M. R. Raukhman. "Magnetostimulated softening and hardening of semiconductors." physica status solidi (c) 2, no. 6 (2005): 1873–77. http://dx.doi.org/10.1002/pssc.200460553.

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Dissertations / Theses on the topic "Hardening-Softening"

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Mshana, S. J. "Rate-dependent constitutive equations of cyclic softening and hardening." Thesis, University of Ottawa (Canada), 1986. http://hdl.handle.net/10393/5422.

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Tahar, Benabdellah. "C←2 continuous hardening/softening elasto-plasticity model for concrete." Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323061.

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Zeng, Xiaohui. "Modeling hardening and softening due to high-angle grain boundaries in crystalline solids /." Göttingen : Cuvillier, 2007. http://d-nb.info/985835710/04.

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Mesmar, Sultan. "On the use of viscosity as a regularisation technique for hardening/softening constitutive models." Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341798.

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Li, Tianbai. "Stress integration strategies for a new hardening/softening elasto-plasticity model for structural concrete." Thesis, University of Sheffield, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425181.

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Conca, Luca. "Mechanical properties of polymer glasses : Mechanical properties of polymer glasses." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1050/document.

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Ce manuscrit présente des récentes extensions au modèle PFVD, basé sur l'hétérogénéité de la dynamique des polymères vitreux à l'échelle de quelques nanomètres et résolu par simulation en 3D, afin de fournir une description physique unifiée des propriétés mécaniques et dynamiques des polymères vitreux soumis à déformation plastique. Trois sujets principaux sont traités : La plastification. Sous déformation, les polymères atteignent le seuil de plasticité (yield) à quelques pourcents de déformation et quelques dizaines de MPa. Nous proposons que l'énergie élastique absorbée à l'échelle des hété
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Kopūstienė, Diana. "Korozijai ir karščiui atsparaus plieno standaus apkrovimo ciklinių deformavimo parametrų nustatymas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2005. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2005~D_20050613_191225-20900.

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It is impossible to improve the quality of the machines, to increase their reliability and lifetime if the working conditions and the properties of the material are not analyzed. We must know the type of the material (hardening, softening or cyclically stabile), what is chosen for the constructions in low cycle loading, because strain and stress change during the exploitation and depend on this type. If we know the type of the material, we can determine the possibility of its application in concrete exploitation conditions. Real working conditions of the most constructions are close to loading
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Kpodekon, Crescent. "Effet du pré-écrouissage sur la durée de vie d'aciers austénitiques de type 304L." Phd thesis, INSA de Rouen, 2010. http://tel.archives-ouvertes.fr/tel-00581715.

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Le travail s'intéresse aux effets de l'histoire de chargement sur le comportement et la durée de vie en fatigue de deux nuances (THYSSEN et CLI)d'un acier inoxydable austénitique 304L à la température ambiante. Les essais ont été réalisés en utilisant deux catégories d'éprouvettes. Les éprouvettes de la première catégorie (vierges) ont été soumises à des essais classiques de fatigue,alors que celles de la deuxième ont subi, avant les essais de fatigue, un pré-écrouissage monotone ou cyclique en déformation imposée. Les éprouvettes vierges manifestent un adoucissement cyclique suivi d'un durcis
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Miyagi, Lowell. "Microstructures and Deformation in Some Fault Rocks From The McConnell Thrust at Mount Yamnuska (Alberta) : Implications for Fluid Flow and Faulting and Cycles of Strain-Hardening and Softening." Oberlin College Honors Theses / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=oberlin1411739220.

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Diao, Hui. "Deformation behaviours of coarse-grained and nanocrystalline Mg-5wt% Al alloys." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/46870/1/Hui_Diao%27s_Thesis.pdf.

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Magnesium alloys have been of growing interest to various engineering applications, such as the automobile, aerospace, communication and computer industries due to their low density, high specific strength, good machineability and availability as compared with other structural materials. However, most Mg alloys suffer from poor plasticity due to their Hexagonal Close Packed structure. Grain refinement has been proved to be an effective method to enhance the strength and alter the ductility of the materials. Several methods have been proposed to produce materials with nanocrystalline grain stru
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Book chapters on the topic "Hardening-Softening"

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Zhang, Zhongping. "Cyclic Hardening/Softening." In Encyclopedia of Tribology. Springer US, 2013. http://dx.doi.org/10.1007/978-0-387-92897-5_245.

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Pelleg, Joshua. "Work Hardening (Softening)." In Structural Integrity. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-86118-6_9.

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Siddique, Abu Bakar, Tariq Khraishi, and Hojun Lim. "Dislocation Dipole Study on Material Hardening/Softening." In TMS 2021 150th Annual Meeting & Exhibition Supplemental Proceedings. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65261-6_46.

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Mashoof, S., and L. F. Boswell. "A Strain Hardening-Softening Constitutive Model for Concrete." In Computational Mechanics ’88. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-61381-4_119.

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Fukushima, Yoshihiro, Shoji Harada, and Yoshiaki Akiniwa. "Low-Cycle Fatigue of Cyclic Hardening and Softening Materials." In Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials—3. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2860-5_93.

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Videm, Marianne, and Nils Ryum. "Cyclic Hardening and Softening of [001] Al Single Crystals." In Advances in Fatigue Science and Technology. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2277-8_35.

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Jin, Miao, Lei Chen, Zongyuan Zou, Shuo Hao, Qun Li, and Shiyan Zhao. "Cyclic Hardening/Softening of a TRIP Duplex Stainless Steel." In Forming the Future. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75381-8_142.

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Neumeister, Jonas M. "Creep Rupture in Fibre Bundles with Hardening-Softening Fibre Material." In Creep in Structures. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-84455-3_48.

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Sethi, V. K., R. Gibala, and T. E. Mitchell. "Interstitial and Substitutional Solution Hardening and Softening in BCC Metals( + )." In Dislocations in Solids. CRC Press, 2023. http://dx.doi.org/10.1201/9780429070914-52.

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Zubizarreta, C., I. Arribas, S. Giménez, and I. Iturriza. "Softening-Hardening Mechanism in the Direct Hot-Extrusion of Aluminium Compacts." In Progress in Powder Metallurgy. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-419-7.837.

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Conference papers on the topic "Hardening-Softening"

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Keiser, James R., R. Scott Heidersbach, Donald L. Dobbs, and Warren C. Oliver. "Response of Aluminum Alloys to Erosive Particle Impacts." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88146.

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Abstract Erosive particle impacts can result in the high-strain-rate deposition of an appreciable amount of energy into the deformed volume of the target material. This energy likely causes local heating; softening or even melting has been observed in many materials. Hardening caused by the high-strain-rate deformation has also been reported for strain-hardenable materials. The effect of individual impacts on the surface of selected aluminum alloys was determined both analytically using theoretical considerations and experimentally using 343-μm-diam tungsten carbide balls impacting at about 30
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Meyer, Jason, and Zhichao (Charlie) Li. "Modeling Alloy Carbide Formation and Coarsening during High-Temperature Tempering of Ferrium C64 Steel." In IFHTSE 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.ifhtse2024p0281.

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Abstract High-alloy steels, like Ferrium C64, are used in powertrain components due to their corrosion resistance and high temperature resistance properties. These steels undergo a tempering temperature that is well above traditional steel, and during this process alloy carbides or compounds form, increasing the materials hardness, mechanical strength, and high temperature resistance properties. In the early stages of tempering, softening occurs due to the formation and coarsening of iron carbide, followed by a hardening as the alloy elements combine to form nano-scale dispersoids. These alloy
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Rajmeny, P. K., PK Jain, and Vakili Abouzar. "3D-Numerical simulation of a mine using cohesion-softening, friction-softening and hardening behavior." In Recent Advances in Rock Engineering (RARE 2016). Atlantis Press, 2016. http://dx.doi.org/10.2991/rare-16.2016.2.

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Jin, Zhefei, and James P. Hambleton. "Simulation of the Cutting Process in Softening and Hardening Soils." In Eighth International Conference on Case Histories in Geotechnical Engineering. American Society of Civil Engineers, 2019. http://dx.doi.org/10.1061/9780784482124.002.

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Deng, J. W., and Z. You. "Semi-softening and hardening mechanical system for smart vibration generators." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Masayoshi Tomizuka. SPIE, 2011. http://dx.doi.org/10.1117/12.880405.

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"Deflection-Softening and Deflection-Hardening FRC Composites: Characterization and Modeling." In SP-248: Deflection and Stiffness Issues in FRC and Thin Structural Elements. American Concrete Institute, 2007. http://dx.doi.org/10.14359/19010.

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Lomov, Ilya N. "Explosion in the Granite Field: Hardening and Softening Behavior in Rocks." In Shock Compression of Condensed Matter - 2001: 12th APS Topical Conference. AIP, 2002. http://dx.doi.org/10.1063/1.1483798.

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Kawanaka, Norita. "Origin of Spectral Hardening and Softening of Secondary Cosmic-Ray Nuclei." In 38th International Cosmic Ray Conference. Sissa Medialab, 2023. http://dx.doi.org/10.22323/1.444.0162.

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Jankowski, Alan. "Analytic model for the softening factor within stages of work hardening." In TMS2023 Annual Meeting - San Diego, California, United States of America - March - 2023. US DOE, 2023. http://dx.doi.org/10.2172/2431825.

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Wu, Haibin, Xudong Zheng, Yiyu Lin, Zhipeng Ma, and Zhonghe Jin. "Linear Parametric Amplification /Attenuation Without Spring Hardening /Softening Effect in MEMS Gyroscopes." In 2020 IEEE 33rd International Conference on Micro Electro Mechanical Systems (MEMS). IEEE, 2020. http://dx.doi.org/10.1109/mems46641.2020.9056177.

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Reports on the topic "Hardening-Softening"

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Pike, L. M., C. T. Liu, I. M. Anderson, and Y. A. Chang. Solute hardening and softening effects in B2 nickel aluminides. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/676873.

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Jankowski, Alan. A model for the softening factor within stages of work hardening. Office of Scientific and Technical Information (OSTI), 2023. http://dx.doi.org/10.2172/2431697.

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Conrad, Hans, and Jay Narayan. Grain Size Hardening and Softening in Tungsten Carbide at Low Homologous Temperatures. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada422872.

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S.C. Hodge, J.M. Minicucci, and T.F. Trimble. Cyclic Material Properties Test to Determine Hardening/Softening Characteristics of HY-80 Steel. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/814789.

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Jankowski, Alan. On the constitutive stress-strain relationships and evaluation of the softening coefficient in work hardening mechanisms. Office of Scientific and Technical Information (OSTI), 2023. http://dx.doi.org/10.2172/2431696.

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Machute, Ana, Lucas Tamele Jr., Arão Manhique, Afonso Macheca, and Hermínio Muiambo. Effect of jatropha curcas oil on the thermorheological properties of asphalt binder modified with recycled HDPE. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.ss.cep.1.

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The application of bio-oils in asphalt and polymer-modified asphalt (PMA), has recently received considerable attention as a pivotal method for enhancing the high-temperature performance of asphalt mixtures while maintaining good binder’s workability. In this study, Jatropha curcas oil (JCO) was selected and evaluated as an PMA modifier. JCO-rHDPE-modified bio-asphalt was prepared with different JCO contents: 1, 3, and 5 wt.%. Physical tests (penetration, softening point, and ductility), rheological tests (dynamic viscosity and rolling thin-film oven test–RTFOT), and thermogravimetric analysis
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Oliynyk, Kateryna, and Matteo Ciantia. Application of a finite deformation multiplicative plasticity model with non-local hardening to the simulation of CPTu tests in a structured soil. University of Dundee, 2021. http://dx.doi.org/10.20933/100001230.

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In this paper an isotropic hardening elastoplastic constitutive model for structured soils is applied to the simulation of a standard CPTu test in a saturated soft structured clay. To allow for the extreme deformations experienced by the soil during the penetration process, the model is formulated in a fully geometric non-linear setting, based on: i) the multiplicative decomposition of the deformation gradient into an elastic and a plastic part; and, ii) on the existence of a free energy function to define the elastic behaviour of the soil. The model is equipped with two bonding-related intern
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Shomer, Ilan, Ruth E. Stark, Victor Gaba, and James D. Batteas. Understanding the hardening syndrome of potato (Solanum tuberosum L.) tuber tissue to eliminate textural defects in fresh and fresh-peeled/cut products. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7587238.bard.

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The project sought to understand factors and mechanisms involved in the hardening of potato tubers. This syndrome inhibits heat softening due to intercellular adhesion (ICA) strengthening, compromising the marketing of industrially processed potatoes, particularly fresh peeled-cut or frozen tubers. However, ICA strengthening occurs under conditions which are inconsistent with the current ideas that relate it to Ca-pectate following pectin methyl esterase (PME) activity or to formation of rhamnogalacturonan (RG)-II-borate. First, it was necessary to induce strengthening of the middle lamellar c
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