Academic literature on the topic 'Strain distribution'

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Journal articles on the topic "Strain distribution"

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Peters, KA, S. Gebremedhin,, RL Meltzer, MB Vieth, JH Beynon, and CM Sellars. "Strain Distribution Patterns During Plane Strain Compression." Journal of Testing and Evaluation 13, no. 1 (1985): 28. http://dx.doi.org/10.1520/jte10757j.

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Suzuki, Yusuke, Yusuke Ohashi, Masato Ohnishi, Ken Suzuki, and Hideo Miura. "OS20F045 Two-Dimensional Strain-Distribution Sensor Using Carbon Nanotube." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011.10 (2011): _OS20F045——_OS20F045—. http://dx.doi.org/10.1299/jsmeatem.2011.10._os20f045-.

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Ventura, Marco, Carlos Canchaya, David Pridmore, Bernard Berger, and Harald Brüssow. "Integration and Distribution of Lactobacillus johnsonii Prophages." Journal of Bacteriology 185, no. 15 (August 1, 2003): 4603–8. http://dx.doi.org/10.1128/jb.185.15.4603-4608.2003.

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ABSTRACT In Lactobacillus johnsonii strain NCC533, two prophages were integrated into tRNA genes and one was disrupted by integration. In a survey, the prophages were restricted to strains sharing an essentially identical restriction pattern. Microarray analysis showed that the prophage DNA represents about 50% of the NCC533 strain-specific DNA.
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Valberg, Henry, Dirk Nolte, and Sepinood Torabzadeh Khorasani. "Deformations in Idealized 2D Extrusion Welding." Key Engineering Materials 554-557 (June 2013): 2507–22. http://dx.doi.org/10.4028/www.scientific.net/kem.554-557.2507.

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Metal flow inside the container and in the metal behind a butt-ended die bridge in idealized aluminum extrusion welding has been investigated by FEA and experiment with respect to the deformation of the material flowing around the bridge and into the layers close the extrusion seam weld. Along the mid-axis of the extrusion process the effective strain subjected to the extrusion material can be determined in three different ways. One way is to determine the strains from grid pattern experiments that reveal the real deformations. When it comes to FEA there are two options; the strains can be determined from the initial and final positions of a number of material points distributed along the mid-axis of the material, where after traditional theoretical strain-equations can be used to calculate the effective strain distribution along the axis. Another possibility is to use the post-processor of the software to calculate the strain distribution. In this work the effective strain distribution along the mid-axis of the billet inside the container volume were determined by all these three methods. The effective strain in the thin layer of the squeeze zone ahead of the dead zone in front of the die bridge determined from the experiments was found to be much larger than the strains elsewhere along this axis. The same was the case when effective strain was determined by FEA from the computed position of the points, but this strain value was predicted approximately 10% lower than the corresponding value from the experiments in the layer with the heaviest strains. However, when this effective strain distribution was calculated by the post-processor of the software the high-strain layer in the squeeze zone was not revealed at all, instead the effective strains were predicted rather even over the whole length of the mid-axis. Corresponding effective strain distributions were determined along the mid-axis of the extrusion material in the weld chamber also, and after outflow of this material into the extrusion seam weld of the resulting profile where no experimental information is available. When this effective strain distribution was computed by FEA, based on initial and final position of points, very different strain values were obtained as compared to when same strains were collected directly from the post-processor. It is believed that the first results, i.e., the effective strains computed from the points are quite accurate, while those values calculated by the post-processor are less reliable.
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Niederwestberg, Jan, Jianhui Zhou, Ying Hei Chui, and Dongsheng Huang. "Bamboo/Wood Composites and Structures Shear and Normal Strain Distributions in Multilayer Composite Laminated Panels under Out-of-Plane Bending." Advances in Civil Engineering 2021 (January 31, 2021): 1–15. http://dx.doi.org/10.1155/2021/6637853.

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Innovative mass timber panels, known as composite laminated panels (CLP), have been developed using lumber and laminated strand lumber (LSL) laminates. In this study, strain distributions of various 5-layer CLP and cross-laminated timber (CLT) were investigated by experimental and two modelling methods. Seven (7) different panel types were tested in third-point bending and short-span shear tests. During the tests, the digital imaging correlation (DIC) technique was used to measure the normal and shear strain in areas of interest. Evaluated component properties were used to determine strain distributions based on the shear analogy method and finite element (FE) modelling. The calculated theoretical strain distributions were compared with the DIC test results to evaluate the validity of strain distributions predicted by the analytical model (shear analogy) and numerical model (FE analysis). In addition, the influence of the test setup on the shear strain distribution was investigated. Results showed that the DIC strain distributions agreed well with the ones calculated by the shear analogy method and FE analysis. Both theoretical methods agree well with the test results in terms of strain distribution shape and magnitude. While the shear analogy method shows limitations when it comes to local strain close to the supports or gaps, the FE analysis reflects these strain shifts well. The findings support that the shear analogy is generally applicable for the stress and strain determination of CLP and CLT for structural design, while an FE analysis can be beneficial when it comes to the evaluation of localized stresses and strains. Due to the influence of compression at a support, the shear strain distribution near the support location is not symmetric. This is confirmed by the FE method.
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Best, T. M., J. H. McElhaney, W. E. Garrett, and B. S. Myers. "Axial Strain Measurements in Skeletal Muscle at Various Strain Rates." Journal of Biomechanical Engineering 117, no. 3 (August 1, 1995): 262–65. http://dx.doi.org/10.1115/1.2794179.

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A noncontact optical system using high speed image analysis to measure local tissue deformations and axial strains along skeletal muscle is described. The spatial resolution of the system was 20 pixels/cm and the accuracy was ±0.125mm. In order to minimize the error associated with discrete data used to characterize a continuous strain field, the displacement data were fitted with a third order polynomial and the fitted data differentiated to measure surface strains using a Lagrangian finite strain formulation. The distribution of axial strain along the muscle-tendon unit was nonuniform and rate dependent. Despite a variation in local strain distribution with strain rate, the maximum axial strain, Exx = 0.614 ± 0.045 mm/mm, was rate insensitive and occurred at the failure site for all tests. The frequency response of the video system (1000 Hz) and the measurement of a continuous strain field along the entire length of the structure improve upon previous noncontact optical systems for measurement of surface strains in soft tissues.
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Maruyama, Kazuya, Xue Zheng Yue, and Koichi Kitazono. "Evaluation of Local Strain Distribution during Compressive Deformation of Open-Cell Porous Metals." Materials Science Forum 933 (October 2018): 169–73. http://dx.doi.org/10.4028/www.scientific.net/msf.933.169.

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Relationship between the macroscopic and local strains of porous metals is examined by microstructural observation. Open-cell porous titanium with 60% porosity was compressed up to 30% macroscopic strain at room temperature. Open-cell porous nickel with 95% porosity was compressed up to 40% macroscopic strain at room temperature. Local strains in cell walls of both porous titanium and nickel were evaluated by electron backscatter diffraction (EBSD). Absolute value of the local strain increased with increasing the macroscopic strain and it is smaller than that of macroscopic strain. In addition, the value of the local strain at the cell junctions was larger than that of the center of cell struts.
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TOYA, Kiminori, and Hiroshi OHNO. "Optical Visualization of Strain Distribution." Proceedings of Mechanical Engineering Congress, Japan 2018 (2018): G0300404. http://dx.doi.org/10.1299/jsmemecj.2018.g0300404.

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Paramasivam, P., and D. P. Thambiratnam. "Strain distribution in steel base plates under eccentric loads." Journal of Strain Analysis for Engineering Design 24, no. 3 (July 1, 1989): 173–83. http://dx.doi.org/10.1243/03093247v243173.

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Experiments have been conducted on steel column base plates subjected to eccentric loads and the strain distributions in the base plates at various stages of loading have been determined. The thickness of the base plate and the eccentricity of load have been treated as parameters. Test results for the maximum bending strains, which always occurred at the column–base plate junction on the side of the load, compare reasonably well with those from a finite element analysis. However, the present results for the bending strains in the cantilever portions of the base plates which failed by yielding are greater than those obtained from classical theory, which is, therefore, seen to be conservative for these cases. Longitudinal and lateral strain distributions, strain contour plans, maximum bending strain variation with load, and interaction diagrams are presented and the results discussed. From these results it is evident that flexible base plates, especially when loaded at higher eccentricities, behave somewhat differently from what is assumed in classical methods.
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Suzuki, Yusuke, Yusuke Ohashi, Masato Ohnishi, Ken Suzuki, and Hideo Miura. "OS20-3-2 Two-Dimensional Strain-Distribution Sensor Using Carbon Nanotube." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011.10 (2011): _OS20–3–2—. http://dx.doi.org/10.1299/jsmeatem.2011.10._os20-3-2-.

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Dissertations / Theses on the topic "Strain distribution"

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Janezic, Sandra, Valerija Zidaric, Bart Pardon, Alexander Indra, Branko Kokotovic, Jose Blanco, Christian Seyboldt, et al. "International Clostridium difficile animal strain collection and large diversity of animal associated strains." BioMed Central, 2014. http://hdl.handle.net/10150/610058.

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BACKGROUND:Clostridium difficile is an important cause of intestinal infections in some animal species and animals might be a reservoir for community associated human infections. Here we describe a collection of animal associated C. difficile strains from 12 countries based on inclusion criteria of one strain (PCR ribotype) per animal species per laboratory.RESULTS:Altogether 112 isolates were collected and distributed into 38 PCR ribotypes with agarose based approach and 50 PCR ribotypes with sequencer based approach. Four PCR ribotypes were most prevalent in terms of number of isolates as well as in terms of number of different host species: 078 (14.3% of isolates
4 hosts), 014/020 (11.6%
8 hosts)
002 (5.4%
4 hosts) and 012 (5.4%
5 hosts). Two animal hosts were best represented
cattle with 31 isolates (20 PCR ribotypes
7 countries) and pigs with 31 isolates (16 PCR ribotypes
10 countries).CONCLUSIONS:This results show that although PCR ribotype 078 is often reported as the major animal C. difficile type, especially in pigs, the variability of strains in pigs and other animal hosts is substantial. Most common human PCR ribotypes (014/020 and 002) are also among most prevalent animal associated C. difficile strains worldwide. The widespread dissemination of toxigenic C. difficile and the considerable overlap in strain distribution between species furthers concerns about interspecies, including zoonotic, transmission of this critically important pathogen.
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Putz-Perrier, Martin W. "Distribution and scaling of extensional strain in sedimentary rocks." Thesis, Imperial College London, 2008. http://hdl.handle.net/10044/1/1293.

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For this study, spatial and size distributions of normal faults and associated tensile fractures were directly measured in deformed sedimentary rocks in three extensional regions: Kimmeridge Bay and Kilve in the UK and the Maltese Islands. The collected data allow i) quantifcation of regional extension at different scales, ii) determination of the relative importance of large and small structures, iii) quan- tifcation of the spatial heterogeneity of brittle extension, iv) comparison of scaling laws for veins and faults belonging to the same extension event, and v) analysis of the evolution of brittle damage in space and time. Multiple scan-lines of different length and resolution were collected in each study area to record the entire extension-related deformation. In order to quantify the heterogeneity of fracture and strain distributions, a new method of spatial analysis has been developed. The method is based on a non-parametric comparison of the cumulative frequency and extension with that for a uniform distribution and pro- vides a measure of heterogeneity based on both the position and the displacement of individual fractures sampled along a linear traverse. Seismically observable extension is found to scale with total extension in the three study areas, obeying a power-law relationship. The proportion of the total extension that is resolved in seismic refl ection data systematically increases with increasing strain. This means that seismic data signifcantly underestimate the total extension at low strains but record most of the total extension in higher strain regions. Heterogeneity analysis carried out for the three study areas shows that i) hetero- geneities of the distributions of fractures and strain in an area can differ signifcantly, ii) heterogeneities are strongly dependent on lithology and mechanical heterogeneity, and iii) heterogeneities evolve with increasing strain. At Kimmeridge Bay, both veins and faults display power-law scaling, but do not form part of the same distribution. Veins and faults along the Kilve-Lilstock section conform to a single power-law distribution. At the Maltese Islands fault-frequencies conform to power-law scaling, but yield a higher scaling exponent in lower-strain zones than in higher-strain (damage) zones. The platform carbonates at the Maltese Islands take up early extension by randomly distributed small-scale faulting. The layered and mudstone-rich rocks around Kim- meridge Bay respond to low strain by distributed ("ductile") deformation in the shales and by randomly distributed or anti-clustered veining in the stiffer carbonate beds. In inter-bedded carbonates and shales along the Kilve-Lilstock section, early extension is highly localised in narrow zones of faults and associated damage, pre- serving large portions of virtually unfractured rock in between. A tensor method has been developed which permits three-dimensional strain analy- sis from line-data. The results of this analysis show that one-dimensional estimates of extension generally are good approximations of the maximum principal strain and that deformation in most sampled sections conforms to pure-shear, plane-strain conditions. Fold-structures associated with normal faults are explained as due to superimposed "normal drag" within the process zone and slip-related "reverse drag" within the damage zone of a (propagating) normal fault.
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Kang, Wei-Ping. "Application of numerical analysis to neutron strain scanning." Thesis, University of Salford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360449.

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Chai, Lauren (Lauren Amy). "Twist error response of periodic lattices to strain energy distribution." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101331.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 79-80).
Periodic lattices, when used as assembly scaffolds, can augment pre-existing 2D manufacturing techniques to fabricate 3D structures with heterogeneous materials, components and architecture such as human organs for transplant patients, and micro batteries. Periodic lattices are first preformed and then folded using externally actuating walls that properly constrain the lattice edges. Angular errors of the actuation walls cause the lattice to distort, misaligning components on the lattice panels. Research into the response of a lattice to geometric errors imposed on the lattice edges does not account for how much strain energy is put into the lattice during folding and its impact on the lattice distortion response and magnitude. This thesis shows how design parameters of the lattice can change the magnitude and shape of the twist response of the lattice when external geometric errors are applied to the lattice during folding. A Buckingham Pi analysis was used to show how the twist response of the lattice due to an external angular wall error depends on the torsional stiffnesses of the panels, the initial fold angle of the preformed accordion unit in the lattice and the angular wall error. A FEA simulation study quantified the Buckingham Pi results by varying the torsional stiffness ratio of the panels, the initial fold angle and the final lattice length after folding. The results showed that increasing the ratio of the torsional stiffnesses by two orders of magnitude decreases the magnitude of the response by as much as an order of magnitude and increases the asymmetry by 0.5 to 1.5 orders of magnitude. Increasing the initial fold angle by 50% increases the magnitude of the result by as much as 250% and decreases asymmetry by 26%.
by Lauren Amy Chai.
S.M.
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Imamoglu, Baris. "Case history strain and force distribution in HDPE reinforced wall /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 149 p, 2009. http://proquest.umi.com/pqdweb?did=1889078531&sid=8&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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Thesis (M.C.E.)--University of Delaware, 2009.
Principal faculty advisors: Dov Leshchinsky and Christopher L. Meehan, Dept. of Civil & Environmental Engineering. Includes bibliographical references.
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Sinha, Arijit. "Strain distribution in OSB and GWB in wood frame shear walls /." Connect to this title online, 2007. http://hdl.handle.net/1957/4655.

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Castillo, Luis E. Hernandez. "Determination of micro-scale strain distribution in hot-worked steel microstructures." Thesis, University of Sheffield, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425603.

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Kabeer, Saqib. "Application of image analysis techniques to determine strain distribution in leather." Thesis, University of Northampton, 2006. http://nectar.northampton.ac.uk/2672/.

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The optimum cutting of various parts of a shoe, prior to shoe manufacture requires knowledge of the topographical variation of what are termed “lines of tightness”. Currently the cutting operation for shoe parts is guided by a general assumption about the pattern of the lines of tightness. There is a need to have available a system which can determine, in a non-destructive way, the lines of tightness in an indvidual piece of leather. Initially an image analysis system was developed to investigate the uni-axial deformation behaviour of leather. This technique provided more information about the stress-strain behaviour of a leather sample along the gauge length than a conventional mechanical test and it was possible to accurately measure the strain distribution along the gauge length. A system was developed which could determine the relative displacement of marked spots along the gauge length of the sample using images captured during a uni-axial, bi-axial or multi-axial tensile test. The separation of the marked spots along the direction of applied stroke allowed the determination of longitudinal strain while contraction across the width was also measured in some cases, which was useful in calculating the Poisson’s ratio of leather for which a great variation was observed between different locations (Butt, Belly, Neck etc). Various approaches were investigated to determine the lines of tightness. Firstly, the local Poisson’s ratio was observed since a higher value of this parameter was associated with these lines of tightness. Secondly, biaxial stretching of leather by a series of actuators for each axis indicated the lines of tightness along the actuator with lower strain values. Thirdly, the strain was measured when the leather was stretched along number of known axes. This latter technique appeared to be the best approach and mathematical modeling was investigated to provide further refinement. A mechatronics-based device by industrial application of the third approach was also proposed. The software was written using a graphical programming system (LabVJ EW)
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Williams, Kevin Vaughan Carleton University Dissertation Engineering Mechanical. "The numerical prediction of strain distribution in sheet metal forming operations." Ottawa, 1993.

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Fujisawa, Hiromi. "Inheritance and Strain Distribution of a Persistent Hyaloid Vascular System in Mice." Kyoto University, 1997. http://hdl.handle.net/2433/202172.

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Books on the topic "Strain distribution"

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Arya, V. K. Finite element elastic-plastic-creep and cyclic life analysis of a cowl lip. [Washington, D.C.]: National Aeronautics and Space Administration, 1990.

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Koop, Randy. The mechanism of the regulation of energy distribution between photosystems 1 and 2 in the cyanobacterium Synechococcus sp. strain PCC 7002. St. Catharines, Ont: Brock University, Dept. of Biological Sciences, 1997.

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Gambrell, S. C. Use of photostress to analyze behavior of an aft skirt test specimen. Tuscaloosa, Ala: The University of Alabama, College of Engineering, Bureau of Engineering Research, 1994.

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Kniskern, Marc W. Analysis of a six-component, flow-through, strain-gage, force balance used for hypersonic wind tunnel models with scramjet exhaust flow simulation. Raleigh, [N.C.]: North Carolina State University, Dept. of Mechanical and Aerospace Engineering, 1990.

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Kniskern, Marc W. Analysis of a six-component, flow-through, strain-gage, force balance used for hypersonic wind tunnel models with scramjet exhaust flow simulation. Raleigh, [N.C.]: North Carolina State University, Dept. of Mechanical and Aerospace Engineering, 1990.

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Kniskern, Marc W. Analysis of a six-component, flow-through, strain-gage, force balance used for hypersonic wind tunnel models with scramjet exhaust flow simulation. Raleigh, [N.C.]: North Carolina State University, Dept. of Mechanical and Aerospace Engineering, 1990.

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Trewin, Dennis. Population distribution, Aboriginal and Torres Strait Islander Australians, 2001. [Canberra]: Australian Bureau of Statistics, 2002.

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N, Litvinchuk S. Ėvoli︠u︡t︠s︡ii︠a︡, sistematika i rasprostranenie grebenchatykh tritonov (Triturus cristatus complex) na territorii Rossii i sopredelʹnykh stran. Sankt-Peterburg: Evropeĭskiĭ Dom, 2009.

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A, Levy David. Hydroacoustic estimation of sockeye salmon abundance and distribution in the Strait of Georgia, 1986. Vancouver, B.C: Pacific Salmon Commission, 1991.

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Lévy, David. Hydroacoustic estimation of sockeye salmon abundance and distribution in the Strait of Georgia, 1986. Vancouver, B.C: Pacific Salmon Commission, 1991.

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Book chapters on the topic "Strain distribution"

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Ragalwar, Ketan A., Hung Nguyen, Ravi Ranade, William F. Heard, and Brett A. Williams. "Influence of Distribution Modulus of Particle Size Distribution on Rheological and Mechanical Properties of Ultra-High-Strength SHCC Matrix." In Strain-Hardening Cement-Based Composites, 221–29. Dordrecht: Springer Netherlands, 2017. http://dx.doi.org/10.1007/978-94-024-1194-2_26.

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Skripnyak, Vladimir A., Evgeniya G. Skripnyak, and Vladimir V. Skripnyak. "Failure Mechanisms of Alloys with a Bimodal Graine Size Distribution." In Springer Tracts in Mechanical Engineering, 521–34. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_23.

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AbstractA multi-scale computational approach was used for the investigation of a high strain rate deformation and fracture of magnesium and titanium alloys with a bimodal distribution of grain sizes under dynamic loading. The processes of inelastic deformation and damage of titanium alloys were investigated at the mesoscale level by the numerical simulation method. It was shown that localization of plastic deformation under tension at high strain rates depends on grain size distribution. The critical fracture stress of alloys depends on relative volumes of coarse grains in representative volume. Microcracks nucleation at quasi-static and dynamic loading is associated with strain localization in ultra-fine grained partial volumes. Microcracks arise in the vicinity of coarse and ultrafine grains boundaries. It is revealed that the occurrence of a bimodal grain size distributions causes increased ductility, but decreased tensile strength of UFG alloys. The increase in fine precipitation concentration results not only strengthening but also an increase in ductility of UFG alloys with bimodal grain size distribution.
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Kanakubo, Toshiyuki, Keisuke Watanabe, and Yuriko Ozu. "Simulation of Scattering of Bending Characteristics of FRCC Based on Bridging Law Considering Fiber Distribution." In Strain-Hardening Cement-Based Composites, 509–17. Dordrecht: Springer Netherlands, 2017. http://dx.doi.org/10.1007/978-94-024-1194-2_59.

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Saggu, Rajni. "Strain Distribution in Geothermal Energy Piles: A Parametric Study." In Proceedings of the 8th International Congress on Environmental Geotechnics Volume 3, 129–37. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2227-3_16.

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Bairy, Srinivasan, Rafaque Ahmad, and Hari K. Voruganti. "Topology Optimization Using Strain Energy Distribution for 2D Structures." In Advances in Applied Mechanical Engineering, 619–32. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1201-8_69.

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Huffman, P. J., J. A. F. O. Correia, A. Mourão, T. Bittencourt, and R. Calçada. "Predicted Distribution in Measured Fatigue Life from Expected Distribution in Cyclic Stress–strain Properties Using a Strain-Energy Based Damage Model." In Structural Integrity, 65–71. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-91847-7_8.

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Ri, S., Y. Fukami, Q. Wang, and S. Ogihara. "Accurate Strain Distribution Measurement Based on the Sampling Moiré Method." In Advancement of Optical Methods in Experimental Mechanics, Volume 3, 243–49. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-41600-7_32.

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Yang, Yihang, Ailong Zheng, Zhimin Huang, Fusheng Peng, and Houan Zhang. "Strain Distribution and Metal Flow of Bulk Forming of Molybdenum." In Springer Proceedings in Physics, 191–200. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-5944-6_19.

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Gomide, H. A., and C. P. Burger. "Strain Distribution During Hot Rolling of Strip by Photoplastic Simulation." In Experimental Stress Analysis, 559–67. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4416-9_61.

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Itakura, Maho, Yuelin Zhang, Kyohei Takeo, and Satoru Yoneyama. "Measuring Strain Distribution of Knee Cartilage Using Digital Volume Correlation." In Mechanics of Biological Systems and Materials & Micro-and Nanomechanics & Research Applications, 43–48. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-59765-8_8.

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Conference papers on the topic "Strain distribution"

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Matsumoto, Yuma, Yoshihiro Oshida, and Yoshihisa Iwatashi. "Strain distribution measuring system using speckle shearing interferometer." In International Conference on Experimental Mechanics 2013 and the Twelfth Asian Conference on Experimental Mechanics, edited by Somnuk Sirisoonthorn. SPIE, 2014. http://dx.doi.org/10.1117/12.2054198.

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Ustinov, A. M., A. A. Klopotov, A. I. Potekaev, S. V. Galsanov, Yu A. Abzaev, and G. I. Tayukin. "Strain distribution in a steel/steel adhesive joint." In PROCEEDINGS OF THE ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES. Author(s), 2018. http://dx.doi.org/10.1063/1.5083557.

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Lucas Lisbôa Vignoli and Paulo Pedro Kenedi. "Stress and Strain Distribution of an Anisotropic Bone." In 23rd ABCM International Congress of Mechanical Engineering. Rio de Janeiro, Brazil: ABCM Brazilian Society of Mechanical Sciences and Engineering, 2015. http://dx.doi.org/10.20906/cps/cob-2015-0249.

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Gill, Apninder, Kara Peters, and Michel Studer. "Genetic Algorithm for the Reconstruction of Bragg Grating Sensor Strain Distribution." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-42669.

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Optical fiber Bragg gratings are unique among embedded strain sensors due to their potential to measure strain distributions with a spatial resolution of a few nanometers over gage lengths of a few centimeters. This article presents a genetic algorithm for the interrogation of optical fiber Bragg grating strain sensors. The method calculates the period distribution along the Bragg grating which can then be directly related to the axial strain distribution. The period distribution is determined from the output intensity spectrum of the grating via a T-matrix approach. The genetic algorithm inversion method presented requires only intensity information and reconstructs non-linear and discontinuous distributions well, including regions with significant gradients. The method is demonstrated through example reconstructions of Bragg grating sensor simulated data. The development of this algorithm will permit the use of Bragg grating sensors for damage identification in regions close to localized damages where strong strain non-linearities occur.
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Yu, Xinghua, Dongxiao Qiao, Paul Crooker, Stan David, and Zhili Feng. "Measurement of Plastic Strain Distribution in Dissimilar Metal Weld by Micro-Hardness Mapping." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28864.

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Measuring plastic strains is very useful method for validating finite element model of weld residual stress, which is very important for understanding welding process and facilitating other engineering applications. In this work, the distribution of plastic strains in a multi-pass dissimilar metal weld comprised of Nickel Alloy 82 and austenitic stainless steel 304L is evaluated quantitatively through micro-hardness mapping. An experiment procedure was developed to separate the contribution to hardness from the plastic strain (work hardening) that forms the chemistry variation in the dissimilar metal weld. It is found that high equivalent plastic strains are predominately accumulated in the buttering layer, the root pass, and the heat affected zone, which experience multiple welding thermal cycles. The final cap passes, experiencing only one or two welding thermal cycles, exhibit less plastic strain accumulation. Moreover, the experimental residual plastic strains are compared with those predicted using an existing weld thermo-mechanical model with two different strain hardening rules.
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Fukuzawa, M., and M. Yamada. "Strain issues on III–V compound semiconductors - imaging of strain distribution and crystal growth." In Related Materials (IPRM). IEEE, 2008. http://dx.doi.org/10.1109/iciprm.2008.4702958.

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Dadpay, C., N. R. Sivakumar, and N. Mrad. "Strain distribution and sensitivity in fiber Bragg grating sensors." In Photonics North 2008, edited by Réal Vallée, Michel Piché, Peter Mascher, Pavel Cheben, Daniel Côté, Sophie LaRochelle, Henry P. Schriemer, Jacques Albert, and Tsuneyuki Ozaki. SPIE, 2008. http://dx.doi.org/10.1117/12.807190.

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Saburi, T., M. Yoshida, and S. Kubota. "Dynamic strain distribution of FRP plate under blast loading." In 31st International Congress on High-Speed Imaging and Photonics, edited by T. Goji Etoh and Hiroyuki Shiraga. SPIE, 2017. http://dx.doi.org/10.1117/12.2271148.

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Guler, M., M. E. Kutay, and A. H. Aydilek. "Evaluation of Strain Distribution in Geotextiles Using Image Analysis." In Geo-Frontiers Congress 2005. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/40782(161)6.

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Arutunian, S. G., N. M. Dobrovolski, S. L. Egiazarian, M. R. Mailian, I. G. Sinenko, A. V. Sinjavski, and I. E. Vasiniuk. "Magnetic field distribution measurement by vibrating wire strain gauge." In Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366). IEEE, 1999. http://dx.doi.org/10.1109/pac.1999.795584.

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Reports on the topic "Strain distribution"

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Towe, E., G. Stoleru, and D. Pal. Self-Assembled (In,Ga)As/GaAs Quantum-Dot Nanostructures: Strain Distribution and Electronic Structure. Fort Belvoir, VA: Defense Technical Information Center, January 2001. http://dx.doi.org/10.21236/ada395570.

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Stock, Stuart R. Nondestructive 3-Dimensional X-ray Diffraction Tomography of Stress/Strain Distribution around Fatigue Cracks in Al-Li 2090. Fort Belvoir, VA: Defense Technical Information Center, October 1997. http://dx.doi.org/10.21236/ada330970.

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Santa Maria, J. A., B. F. Schultz, J. B. Ferguson, N. Gupta, and P. K. Rohatgi. Effect of Hollow Sphere Size and Distribution on the Quasi-Static and High Strain Rate Compressive Properties of Al-A380-Al2O3 Syntactic Foams. Fort Belvoir, VA: Defense Technical Information Center, January 2012. http://dx.doi.org/10.21236/ada565575.

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Dafoe, L. T., K. J. DesRoches, and G. L. Williams. A structural and stratigraphic framework for the western Davis Strait region. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/321831.

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Western Davis Strait lies within the Labrador-Baffin Seaway rift system, which began forming in the Early Cretaceous as Greenland separated from North America. At chron C27n (Danian), regional seafloor spreading began, as well as significant magmatism. The opening direction changed from southeast-northwest to more north-south in the Thanetian-Ypresian between chrons C25n and C24n, resulting in significant strike-slip motion through the Davis Strait region until seafloor spreading ended at chron C13, near the Eocene-Oligocene boundary. This tectonism has influenced the stratigraphy preserved in basins within western Davis Strait, including confirmed Cretaceous successions in the Lady Franklin Basin and Cumberland Sound; however, regional overprinting of Paleocene-Eocene volcanic rocks obscures pre-rift basement and possible older strata over much of the region. Three industry wells and several seabed samples of bedrock help constrain the stratigraphic distribution of Cretaceous and Cenozoic strata based on the lithostratigraphy of the well sampled Labrador margin.
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Saleh, Omar, Deborah Fygenson, and Robert McMeeking. Final Report: Strain Distributions and Structural Changes in Motor Driven Gels. Office of Scientific and Technical Information (OSTI), April 2019. http://dx.doi.org/10.2172/1509714.

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Zhao, Bingyu, Saul Burdman, Ronald Walcott, and Gregory E. Welbaum. Control of Bacterial Fruit Blotch of Cucurbits Using the Maize Non-Host Disease Resistance Gene Rxo1. United States Department of Agriculture, September 2013. http://dx.doi.org/10.32747/2013.7699843.bard.

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The specific objectives of this BARD proposal were: (1) To determine whether Rxol can recognize AacavrRxo1 to trigger BFB disease resistance in stable transgenic watermelon plants. (2) To determine the distribution of Aac-avrRxo1 in a global population of Aae and to characterize the biological function of Aac-avrRxo1. (3) To characterize other TIS effectors of Aae and to identify plant R gene(s) that can recognize conserved TIS effectors of this pathogen. Background to the topic: Bacterial fruit blotch (BFB) of cucurbits, caused by Acidovorax avenae subsp. citrulli (Aae), is a devastating disease that affects watermelon (Citrullus lanatus) and melon (Cucumis melo) production worldwide, including both Israel and USA. Two major groups of Aae strains have been classified based on their virulence on host plants, genetics and biochemical properties. Thus far, no effective resistance genes have been identified from cucurbit germplasm. In this project, we assessed the applicability of a non-host disease resistance gene, Rxol, to control BFB in watermelon. We also tried to identify Aae type III secreted (TIS) effectors that can be used as molecular probes to identify novel disease resistance genes in both cucurbits and Nieotianatabaeum. Major conclusions, solutions, achievements: We generated five independent transgenic watermelon (cv. Sugar Babay) plants expressing the Rxol gene. The transgenic plants were evaluated with Aae strains AAC001 and M6 under growth chamber conditions. All transgenic plants were found to be susceptible to both Aae strains. It is possible that watermelon is missing other signaling components that are required for Rxol-mediated disease resistance. In order to screen for novel BFB resistance genes, we inoculated two Aae strains on 60 Nieotiana species. Our disease assay revealed Nicotiana tabaeum is completely resistant to Aae, while its wild relative N. benthamiana is susceptible to Aae. We further demonstrated that Nieotiana benthamiana can be used as a surrogate host for studying the mechanisms of pathogenesis of Aae. We cloned 11 TIS effector genes including the avrRxolhomologues from the genomes of 22 Aae strains collected worldwide. Sequencing analysis revealed that functional avrRxol is conserved in group" but not group I Aae strains. Three effector genes- Aave_1548, Aave_2166 and Aave_2708- possessed the ability to trigger an HR response in N. tabacum when they were transiently expressed by Agrobaeterium. We conclude that N. tabacum carries at least three different non-host resistance genes that can specifically recognize AaeTIS effectors to trigger non-host resistance. Screening 522 cucurbits genotypes with two Aae strains led us to identify two germplasm (P1536473 and P1273650) that are partially resistant to Aae. Interestingly, transient expression of the TIS effector, Aave_1548, in the two germplasms also triggered HR-Iike cell death, which suggests the two lines may carry disease resistance genes that can recognize Aave_1548. Importantly, we also demonstrated that this effector contributes to the virulence of the bacterium in susceptible plants. Therefore, R genes that recognize effector Aave1548 have great potential for breeding for BFB resistance. To better understand the genome diversity of Aae strains, we generated a draft genome sequence of the Israeli Aae strain, M6 (Group I) using Iliumina technology. Comparative analysis of whole genomes of AAC001, and M6 allowed us to identify several effectors genes that differentiate groups I and II. Implications, both scientific and agricultural: The diversity of TIS effectors in group I and II strains of Aae suggests that a subset of effectors could contribute to the host range of group I and II Aae strains. Analysis of these key effectors in a larger Aae population may allow us to predict which cucurbit hosts may be at risk to BFB. Additionally, isolation of tobacco and cucurbit Rgenes that can recognize Aae type III effectors may offer new genetic resources for controlling BFB.
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Andrawes, Bassem, Ernesto Perez Claros, and Zige Zhang. Bond Characteristics and Experimental Behavior of Textured Epoxy-coated Rebars Used in Concrete Bridge Decks. Illinois Center for Transportation, January 2022. http://dx.doi.org/10.36501/0197-9191/22-001.

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The deterioration of bridge decks is a problem typically associated with the corrosion of the reinforcing steel. This issue was partially controlled during the 1970s with the incorporation of the epoxy-coating protection system. However, research later demonstrated that the smooth surface resulting from the epoxy-coating application reduces most of the friction between the rebar and the surrounding concrete. Consequently, forces acting on the rib faces are reconfigured in such a way that the radial components increase, triggering the early development of cracks. To mitigate both the reduction of bonding and the formation of cracks, the Illinois Department of Transportation proposed a new type of coated bars: textured epoxy-coated (TEC) bars. Over the last few years, different projects have been executed to understand and improve the characteristics of TEC rebars. This report is a continuation of research performed at the University of Illinois Urbana-Champaign to evaluate the bond behavior of TEC bars. The experimental program starts by characterizing, qualitatively and quantitatively, the roughness of the TEC rebars. Next, their bond-slip interaction embedded in concrete is evaluated through pull-out tests. Finite element models of these tests are developed to validate the behavior observed as the textured reinforcement loses anchorage with concrete. Based on these results, the experimental program then aims to study the impact of the drying shrinkage, temperature change, and flexural demands on two large-scale bridge deck specimens reinforced, individually, with TEC and standard epoxy-coated bars. The results collected from both specimens using digital image correlation and strain gauges are compared to explore the differences exhibited by the traditional and the new type of reinforcement coatings in terms of stress distribution in bridge decks. Finally, given the specialized equipment and time-consuming procedure needed to calculate the roughness parameters of TEC bars, an empirical, weight-based approach is developed as a rapid method for assessing the rebars’ roughness on-site.
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Luternauer, J. L. Johnstone Strait, British Columbia, distribution of surficial sediment and sand wave and location of other types of data collected by the Geological Survey of Canada. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/129962.

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Jerzykiewicz, T. Synopsis: "Controls on the distribution of coal in the Campanian to Paleocene post-Wapaibi strata of the Rocky Mountain Foothills [Canada]". Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/126742.

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Davis, C. L. Quartzose sands in the Lower to Middle Devonian strata of southwestern Ontario: geographic distribution and characterization in drill cuttings and geophysical logs. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2017. http://dx.doi.org/10.4095/305359.

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