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Relevant bibliographies by topics / X-ray elastic constant

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Dissertations / Theses
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Academic literature on the topic 'X-ray elastic constant'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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Journal articles on the topic "X-ray elastic constant"

1

Lundberg, Mattias, Jonas Saarimäki, Johan J. Moverare, and Ru Lin Peng. "Effective X-ray elastic constant of cast iron." Journal of Materials Science 53, no. 4 (October 12, 2017): 2766–73. http://dx.doi.org/10.1007/s10853-017-1657-6.

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Ejiri, Shouichi, Toshihiko Sasaki, and Yukio Hirose. "Residual Stress Analysis of Textured Materials by X-Ray Diffraction Method." Materials Science Forum 706-709 (January 2012): 1673–78. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.1673.

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The residual stress measurement by the conventional X-ray diffraction was formulated on the assumption that a specimen from polycrystalline materials was quasi-isotropic and homogeneous, and the stress was biaxial and almost constant within the X-ray penetration depth. Therefore, it was not available to analyze the stress state of the textured materials by the conventional measurement as a general rule. In resent years, advanced methods have been proposed for the X-ray stress measurement of textured materials. In some methods, it is assumed that the X-ray elastic constant is derived from the crystallite orientation distribution function of textured materials for solving the first anisotropic problem. However, there is a nonlinear problem in the stress analysis from the measured lattice strain. In present study, the X-ray elastic constants were averaged as the expected value around the normal direction of the X-ray diffraction in a similar way. A stress analysis was proposed by differential calculus of the X-ray elastic constant in order to the avoidance of nonlinear problem. The stress analysis was applied to residual stress measurements of a titanium carbide coating film with preferred orientation and a cold-rolled steel with texture. The calculated values of the X-ray elastic constants showed the linearity on some condition for the film. The X-ray stress determination was carried out by the fitting the gradients of the measured lattice strain.

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Kurita, Masanori. "Standard Deviations in X-Ray Stress and Elastic Constants Due to Counting Statistics." Advances in X-ray Analysis 32 (1988): 377–88. http://dx.doi.org/10.1154/s0376030800020681.

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AbstractX-ray diffraction can be used to nondestructively measure residual stress of polycrystalline materials. In x-ray stress measurement, it is important to determine a stress constant experimentally in order to measure the stress accurately. However, every value measured by x-ray diffraction has statistical errors arising from counting statistics. The equations for calculating the standard deviations of the stress constant and elastic constants measured by x-rays are derived analytically in order to ascertain the reproducibility of the measured values. These standard deviations represent the size of the variability caused by counting statistics, and can be calculated from a single set of measurements by using these equations. These equations can apply Lu any meuhud for x-ray stress ifiesuremenL. The variances of the x-ray stress and elastic constants are expressed in terms of the linear combinations of the variances of the peak position. The confidence limits of these constants of a quenched and tempered steel specimen were determined by the Gaussian curve method. The 95% confidence limits of the stress constant were -314 ± 25 MFa/deg.

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Teeuw, D. H. J., and J. Th M. De Hosson. "Determination of x-ray elastic constants using an in situ pressing device." Journal of Materials Research 13, no. 7 (July 1998): 1757–60. http://dx.doi.org/10.1557/jmr.1998.0246.

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The experimental determination of x-ray elastic constants are performed by in situ measurements of the dependence of the strain state in selected crystallites for different applied external compressive stresses. The use of compressive applied stresses instead of tensile applied stresses is of interest for x-ray elastic constant determinations for materials which exhibit brittle crack-like behavior, which cannot be loaded to high tensile stresses in, for example, four-point bending devices. The x-ray elastic constants for {146} α–Al2O3 are determined with the pressing device and compared to calculated as well as experimentally determined values which were tested in tensile loading devices.

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Pathak, T. K., J. J. U. Buch, U. N. Trivedi, H. H. Joshi, and K. B. Modi. "Infrared Spectroscopy and Elastic Properties of Nanocrystalline Mg–Mn Ferrites Prepared by Co-Precipitation Technique." Journal of Nanoscience and Nanotechnology 8, no. 8 (August 1, 2008): 4181–87. http://dx.doi.org/10.1166/jnn.2008.an33.

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Nanoparticles having particle size in the range 25–40 nm for compositions x = 0.0, 0.2, 0.4 and 0.5 of MgxMn1−xFe2O4 spinel ferrite system have been prepared by chemical co-precipitation route. The microstructure, infrared spectral and elastic properties have been studied by means of energy dispersive analysis of X-rays (EDAX), transmission electron microscopy (TEM), X-ray diffraction (XRD) and infrared spectroscopic (IR) measurements, before (W) and after high temperature annealing A(W). The force constants for tetrahedral and octahedral sites determined by infrared spectral analysis, lattice constant and X-ray density values by X-ray diffraction pattern analysis; have been used to calculate elastic constants. The magnitude of force constant and elastic moduli for nanocrystalline W-samples are found to be larger as compared to coarse grained A(W)-samples. The results have been explained in the light of redistribution of cations and as a result change in mean ionic charge for such cationic sites, elastic energy and grain size reduction effect of Nanoparticles.

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Attar, Fouad, and Thomas Johannesson. "Adhesion and X-ray elastic constant evaluation of CrN coating." Thin Solid Films 258, no. 1-2 (March 1995): 205–12. http://dx.doi.org/10.1016/0040-6090(94)06373-7.

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Kawamura, Yuki, and Yoshiaki Akiniwa. "Measurement of the X-ray Elastic Constants of Amorphous Polycarbonate." Quantum Beam Science 4, no. 4 (October 9, 2020): 35. http://dx.doi.org/10.3390/qubs4040035.

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In polymer materials, residual stress introduced during injection molding affects yield reduction due to deformation during molding and delayed fracture during operation, so the establishment of nondestructive stress evaluation of polymer products is desirable. The X-ray elastic constants of polycarbonate were measured for the purpose of obtaining fundamental data for X-ray stress measurement of amorphous polymer materials. The structural function was obtained from the diffraction data, and the strain measured by X-ray was determined from the shift of the first peak by the Q-space method. The peak position was determined using the pseudo-Voigt function approximation method and the diffraction line width method. The Young’s modulus measured by X-ray obtained by the diffraction line width method was close to the mechanical value. Although these values varied widely, they changed depending on the peak ratio. A simple and practical measurement method directly using the raw profile data was also discussed. The Young’s modulus determined by the diffraction line width method decreased with increasing peak ratio. On the other hand, the values determined by the pseudo-Voigt method were almost constant, irrespective of the peak ratio. The strain calculated by the line width method was determined more accurately than that by the pseudo-Voigt method.

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SUZUKI, Kenji, and Keisuke TANAKA. "Effect of purity on X-ray elastic constant of sintered alumina." Journal of the Society of Materials Science, Japan 37, no. 417 (1988): 586–91. http://dx.doi.org/10.2472/jsms.37.586.

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Badawi, F., and P. Villain. "Stress and elastic-constant analysis by X-ray diffraction in thin films." Journal of Applied Crystallography 36, no. 3 (May 20, 2003): 869–79. http://dx.doi.org/10.1107/s0021889803002486.

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Residual stresses influence most physical properties of thin films and are closely related to their microstructure. Among the most widely used methods, X-ray diffraction is the only one allowing the determination of both the mechanical and microstructural state of each diffracting phase. Diffracting planes are used as a strain gauge to measure elastic strains in one or several directions of the diffraction vector. Important information on the thin-film microstructure may also be extracted from the width of the diffraction peaks: in particular, the deconvolution of these peaks allows values of coherently diffracting domain size and microdistortions to be obtained. The genesis of residual stresses in thin films results from multiple mechanisms. Stresses may be divided into three major types: epitaxic stresses, thermal stresses and intrinsic stresses. Diffraction methods require the knowledge of the thin-film elastic constants, which may differ from the bulk-material values as a result of the particular microstructure. Combining an X-ray diffractometer with a tensile tester, it is possible to determine X-ray elastic constants of each diffracting phase in a thin-film/substrate system, in particular the Poisson ratio and the Young modulus. It is important to notice that numerous difficulties relative to the application of diffraction methods may arise in the case of thin films.

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Kurita, Masanori, Ikuo Ihara, and Nobuyuki Ono. "Residual Stress Measurement of Silicon Nitride and Silicon Carbide by X-Ray Diffraction Using Gaussian Curve Method." Advances in X-ray Analysis 32 (1988): 459–69. http://dx.doi.org/10.1154/s0376030800020784.

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The residual stress induced by grinding or some thermal treatment has a large effect on the strength of ceramics. The X-ray technique can be used to nondestructively measure the residual stress in small areas on the surface of polycrystalline materials. The X-ray stress measurement is based on. the continuum mechanics for macroscopically isotropic polycrystalline materials. In this method, the stress value is calculated selectively from strains of a particular diffraction plane in the grains which are favorably oriented for the diffraction. In general, however, the elastic constants of a single crystal depend on the plane of the lattice, since a single crystal is anisotropic, The behavior of the deformation of individual crystals in the aggregate of polycrystalline materials under applied stress has not yet been solved successfully. Therefore, the stress constant and elastic constants for a particular diffracting plane should be determined experimentally in order to determine the residual stress accurately by X-ray diffraction.

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Dissertations / Theses on the topic "X-ray elastic constant"

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Burba, Micheal Eric. "Microstructure-Sensitive Models for Predicting Surface Residual Stress Redistribution in P/M Nickel-Base Superalloys." University of Dayton / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1492532628147262.

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鈴木, 賢治, Kenji SUZUKI, 修太郎町屋, Shutaro MACHIYA, 啓介田中, Keisuke TANAKA, 喜久坂井田, and Yoshihisa SAKAIDA. "熱遮へいジルコニアコーティングのX線的弾性定数と残留応力分布." 日本機械学会, 2001. http://hdl.handle.net/2237/9167.

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鈴木, 賢治, Kenji SUZUKI, 修太郎町屋, Shutaro MACHIYA, 啓介田中, Keisuke TANAKA, 喜久坂井田, and Yoshihisa SAKAIDA. "熱遮へいコーティング膜の変形特性のＸ線的研究." 日本機械学会, 2001. http://hdl.handle.net/2237/9163.

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Hou, Weimin. "A novel method for the determination of single crystal elastic constants using powder X-ray diffraction." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6338.

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The elastic properties of a material have long been a subject of interest in materials science and physics. Especially, a complete determination of the single crystal compliance and stiffness tensor is of great importance, as the single crystal elastic tensor provides a complete description of the elastic properties of a material. There are numerous materials that are only available in polycrystalline form. Many of these polycrystalline materials are of great interest, such as the polycrystalline materials synthesized under high pressure conditions, for which the elastic properties under high pressure conditions are particularly important. However, traditional methods to measure the elastic constants apply only to single crystals. Recently, Singh and co-workers have developed a method, using energy dispersive X-ray diffraction to measure the single crystal elastic constants of a material at elevated pressures, which, for the first time, enabled the single crystal elastic tensors of numerous polycrystalline samples to be determined. Inspired by the energy dispersive X-ray diffraction method, we have undertaken to develop a novel method, using angle dispersive X-ray diffraction techniques combined with a two-dimensional X-ray recording area detector, to measure the single crystal elastic constants of powder samples. We have obtained important results that will enable the single crystal elastic constants of concerned material to be determined from Debye rings recorded on the X-ray recording image plate. In comparison to the energy dispersive X-ray diffraction method, the angle dispersive X-ray diffraction method offers advantages, as we will demonstrate.

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Zakri, Cécile. "Étude de la fusion-cristallisation de monocouches de 1-alcools à la surface de l'eau : mesures d'élasticité latérale par diffraction de rayons X et par une méthode mécanique." Université Joseph Fourier (Grenoble ; 1971-2015), 1997. http://www.theses.fr/1997GRE10107.

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Les proprietes elastiques et le scenario de fusion-cristallisation des 1-alcools courts, amphiphiles partiellement solubles dans l'eau, sont etudies. La monocouche est formee a partir d'une goutte d'alcool, deposee a la surface de l'eau et qui constitue un reservoir de matiere. En faisant varier la temperature, une transition est detectee par ellipsometrie et tension de surface. Par diffraction de rayons x sous incidence rasante, on sait qu'il s'agit d'une transition entre phase solide hexagonale rotateur et phase liquide. Cette fusion, nettement du premier ordre pour les alcools longs, semble changer de nature pour les chaines plus courtes. Par diffraction de rayons x sur un montage a tres haute resolution, une etude approfondie du scenario de fusion bidimensionnelle des chaines longues et de la monocouche de decanol est realisee. La constante elastique de cisaillement et la compressibilite sont extraites de l'analyse des formes de raies. Une experience mecanique de mesure de la constante elastique de cisaillement de films, concue entierement au laboratoire, est decrite. Elle apporte des informations complementaires sur la cinetique de cristallisation des monocouches de 1-alcools. Cette technique de mesure se revele surtout bien adaptee a l'etude de la cristallisation des proteines telles que la ctb. Elle permet une comparaison entre la cinetique d'adsorption, determinee par ellipsometrie et la cinetique de nucleation et croissance des cristaux de ctb en monocouche de lipides.

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Ziegler, Fabian. "Investigation of the Structure and Dynamics of Multiferroic Systems by Inelastic Neutron Scattering and Complementary Methods." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E5A6-5.

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Chang, Jeh-Yin, and 張捷茵. "Measuring Elastic Constants of Thin Films by Combining X-ray Diffraction and Laser Curvature Techniques." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/69683604313732110323.

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Book chapters on the topic "X-ray elastic constant"

1

Liu, Chun, Jean-Lou Lebrun, and François Sibieude. "An Advanced Technique for High Temperature X-Ray Elastic Constant and Stress Investigations." In Advances in X-Ray Analysis, 411–22. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2972-9_47.

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Butler, B. D., B. C. Murray, D. G. Reichel, and A. D. Krawitz. "Elastic Constants of Alloys Measured with Neutron Diffraction." In Advances in X-Ray Analysis, 389–95. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4757-9110-5_47.

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Lawson, A. C., G. H. Kwei, J. A. Goldstone, B. Cort, R. I. Sheldon, E. Foltyn, J. Vaninetti, D. T. Eash, R. J. Martinez, and J. I. Archuleta. "Measurement of Atomic Elastic Constants by Pulsed Neutron Powder Diffraction." In Advances in X-Ray Analysis, 577–83. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2972-9_65.

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Kurita, Masanori, Ikuo Ihara, and Akira Saito. "Diffraction Plane Dependence of X-Ray Elastic Constants of Alumina." In Advances in X-Ray Analysis, 363–72. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4613-9996-4_40.

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Kurita, Masanori. "Standard Deviations in X-Ray Stress and Elastic Constants Due to Counting Statistics." In Advances in X-Ray Analysis, 377–88. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4757-9110-5_46.

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Rudnik, P. J., A. D. Krawitz, D. G. Reichel, and J. B. Cohen. "A Comparison of Diffraction Elastic Constants of Steel Measured with X-rays and Neutrons." In Advances in X-Ray Analysis, 245–53. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1035-8_26.

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Sasaki, Toshihiko, Makoto Kuramoto, and Yasuo Yoshioka. "X-Ray Elastic Constants of Sintered and HIP’ed ZrO2 Ceramics with Different Chemical Components." In Advances in X-Ray Analysis, 571–76. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2972-9_64.

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Sasaki, Toshihiko, and Yukio Hirose. "Determination of X-ray Elastic Constants of Isotropic Materials with Non-Linear SIN2 ψ Diagrams." In Advances in X-Ray Analysis, 299–304. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2528-8_37.

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Ohtsuka, Masaaki, Hideaki Matsuoka, Yukio Hirose, and Hitoshi Ishii. "Measurement of X-ray Elastic Constants from Ground Ceramic Showing Non-Linear Sin2 ψ Diagrams." In Advances in X-Ray Analysis, 305–15. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2528-8_38.

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Pfeiffer, W., R. Prümmer, and E. Reisacher. "The X-Ray Elastic Constants of Alumina -Influence of Elastic Anisotropy." In International Conference on Residual Stresses, 347. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1143-7_57.

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Conference papers on the topic "X-ray elastic constant"

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"Comparison of Two X-Ray Residual Stress Measurement Methods: Sin2 ψ and Cos α, Through the Determination of a Martensitic Steel X-Ray Elastic Constant." In Residual Stresses 10. Materials Research Forum LLC, 2016. http://dx.doi.org/10.21741/9781945291173-10.

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Hage, Ilige S., Ré-Mi Hage, Charbel Y. Seif, and Ramsey F. Hamade. "Relating Bone Intra-Cortical Elastic Stiffness to EDX Spectroscopy Mineralization Measurements." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-86233.

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It is widely recognized that bone mineral content is a main contributor to cortical bone stiffness. Previous works by the authors revealed that stiffness of mid-diaphysis cortical bone increases with increasing radial position from interior to exterior regions. In this work, we correlate this radial cortical stiffness to the chemical composition of several bone rings cut from 2-year old bovine cow femur (collected fresh from butcher). This mineralization is quantified using energy-dispersive X-ray (EDX) spectroscopy. On each bone ring, five regions are assigned along a 4 mm radial line covering the entire cortical wall thickness. Locations along the radial distance are assigned to acquire the chemical analysis spectrum. Calcium (Ca) and Phosphorus (P) elements chemical elements are traced/detected. Measured mineralization results are expressed as per weight percent concentration (wt %). These elemental results for Calcium (Ca) and Phosphorus (P) are correlated to radial position and stiffness values using statistical analysis (SPSS®). Calcium (Ca) and Phosphorus (P) elements were positively correlated with stiffness values and radius whilst Ca/P ratio was almost constant with the radius. Findings suggest that with increasing radius, Ca (wt%) and P (wt %) showed a fairly increasing trend that correlates to increasing stiffness values proving that increased bone mineralization would contribute to cortical bone stiffness.

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Xu, Feng, and Don Metzger. "Modeling of In-Situ Hydride Growth in Zr-2.5%Nb." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-58059.

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The presence of Zr hydrides can greatly reduce the ductility and fracture toughness in a pressure vessel made of Zr alloy. Understanding how the hydrides form and grow is critical to flaw assessment for the pressure tubes. The process of hydride growth in Zr-2.5%Nb has been monitored in-situ in high-energy synchrotron X-ray radiation. The C-shaped specimen with a V-notch was held under constant load at a temperature where hydride formation was ensured. The development of hydride size and elastic strains in both the hydrides and the Zr matrix was recorded. Afterwards, the hydride morphology was characterized by Scanning Electronic Microscopy. A finite element program in combination with a process zone model and a diffusion model has been used to interpret the experimental data for better understanding the hydride growth process. The hydride length and morphology are well predicted, given that the information of hydride size and hydrostatic stress is properly updated and exchanged between the process zone and diffusion models. The effect of creep has been included in the modeling but found relatively small compared to that of hydride volumetric expansion. The elastic strains in Zr are well reproduced except that disagreement with the experiment is found in the hydrided region. This analysis provides further evidence that the process zone and diffusion models can be used to predict the hydride size and morphology development. Further modeling at a micro-structural level is needed for improving predictions of the stress/strain state in the hydrides, which is essential to the development of a sound hydride crack initiation model.

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Iadicola, Mark A. "Effect of plastic deformation and strain history on X-ray elastic constants." In NUMISHEET 2005: Proceedings of the 6th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Process. AIP, 2005. http://dx.doi.org/10.1063/1.2011225.

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Nagano, Yasuo, Yasushi Ikeda, and Hiroshi Kawamoto. "Application of 3D X-Ray CT to Stress Simulation Analysis of Porous Materials With Homogenization Method." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2828.

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A 3D X-ray CT method was developed using a combination of a micro-focus X-ray generator and an image intensifier camera. An image processor used produced 2D projection data for CT imaging. The channel number of the data was 1024, and the slicing number was up to 200. A micro-focus X-ray generator was used and image-magnifying method was carried out to imaging porous ceramic materials. Using obtained 3D CT images, voxel mesh method was carried out with mathematical homogenization method. Complicated structures of porous materials were taken into the simulation process as an image-based modeling. Equivalent homogenized elastic constants were calculated for the microscopic porous models, and global macroscopic stress and local stress distribution in porous materials were calculated with the simulation method. This simulation method was considered to be applicable to much larger porous materials of piping and construction.

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Faleev, Nikolai N., Christiana B. Honsberg, and David J. Smith. "Four Stages of Defect Creation in Epitaxial Structures: High Resolution X-Ray Diffraction and Transmission Electron Microscopy Characterization." In ISTFA 2012. ASM International, 2012. http://dx.doi.org/10.31399/asm.cp.istfa2012p0337.

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Abstract Different epitaxial structures have been studied by high-resolution x-ray diffraction and x-ray topography, Transmission Electron Microscopy and Atomic Force Microscopy to establish correlations between epitaxial growth conditions and crystal perfection. It was confirmed that epitaxial growth under initial elastic stress inevitably leads to the creation of extended crystal defects like dislocation loops and edge dislocations in the volume of epitaxial structures, which strongly affect crystal perfection and physical properties of future devices. It was found that the type of created defects, their density and spatial distribution strongly depended on growth conditions: the value and sign of the initial elastic strain, the elastic constants of solid solutions, the temperature of deposition and growth rate, and the thickness of the epitaxial layers. All of the investigated structures were classified by their crystal perfection, using the volume density of extended defects as a parameter. It was found that the accommodation and relaxation of initial elastic stress and creation of crystal defect were up to four stages “chain” processes, necessary to stabilize the crystal structure at a level corresponding to the deterioration power of particular growth conditions.

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Deuerling, Justin M., Weimin Yue, Alejandro A. Espinoza, and Ryan K. Roeder. "Specimen Specific Multiscale Model for the Anisotropic Elastic Properties of Human Cortical Bone Tissue." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-175240.

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The elastic constants of cortical bone are orthotropic or transversely isotropic depending on the anatomic origin of the tissue. Micromechanical models have been developed to predict anisotropic elastic properties from structural information. Many have utilized microstructural features such as osteons, cement lines and Haversian canals to model the tissue properties [1]. Others have utilized nanoscale features to model the mineralized collagen fibril [2]. Quantitative texture analysis using x-ray diffraction techniques has shown that elongated apatite crystals exhibit a preferred orientation in the longitudinal axis of the bone [3]. The orientation distribution of apatite crystals provides fundamental information influencing the anisotropy of the extracellular matrix (ECM) but has not been utilized in existing micromechanical models.

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"Determination of the X-Ray Elastic Constants of the Ti-6Al-4V Processed by Powder Bed-Laser Beam Melting." In Residual Stresses 2018. Materials Research Forum LLC, 2018. http://dx.doi.org/10.21741/9781945291890-46.

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