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Journal articles on the topic 'Modulus recovery'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

Luo, Limin, and Amit K. Ghosh. "Elastic and Inelastic Recovery After Plastic Deformation of DQSK Steel Sheet." Journal of Engineering Materials and Technology 125, no. 3 (2003): 237–46. http://dx.doi.org/10.1115/1.1491574.

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Strain recovery after plastic prestrain and associated elastic and inelastic behavior during loading and unloading of DQSK steel sheet are measured. Average tangent modulus and Poisson’s ratio during unloading and reloading are found to differ from their elastic values in the undeformed state, and they also vary as a function of stress. This modulus, often referred to as the “springback modulus,” decreases with plastic prestrain rapidly for prestrain values <2 percent and decays slowly for larger values of prestrain, while the average Poisson’s ratio during unloading increases with plastic

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2

Ohtsubo, Junji, and Katsuki Nakajima. "Image recovery by simulated annealing with known Fourier modulus." Optics Communications 86, no. 3-4 (1991): 265–70. http://dx.doi.org/10.1016/0030-4018(91)90003-v.

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3

Zhang, Jian-Jun, and Wan-Zhou Ye. "A modulus-based iterative method for sparse signal recovery." Numerical Algorithms 88, no. 1 (2021): 165–90. http://dx.doi.org/10.1007/s11075-020-01035-z.

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4

Roland, C. M., and C. G. Robertson. "Recovery of Shear-Modified Polybutadiene Solutions." Rubber Chemistry and Technology 79, no. 2 (2006): 267–80. http://dx.doi.org/10.5254/1.3547937.

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Abstract We have investigated the recovery of the overshoot in the transient viscosity, the first normal stress coefficient, and the dynamic modulus for entangled polybutadiene solutions subjected to nonlinear shear flow. The molecular-weight dependences of the various time scales (linear viscoelastic relaxation time, entanglement recovery time, and timescale for decay of stress following cessation of shearing) are all consistent with the usual 3.4 power law. Nevertheless, the time for recovery of the stress overshoot and plateau value of the dynamic modulus were substantially longer (by as mu

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5

Khayatzadeh, Saber, Salah Rahimi, and Paul Blackwell. "Effect of Plastic Deformation on Elastic and Plastic Recovery in CP-Titanium." Key Engineering Materials 716 (October 2016): 891–96. http://dx.doi.org/10.4028/www.scientific.net/kem.716.891.

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The springback associated with cold deep drawing of sheet metals leads to undesired dimensional changes in the final products. This is often due to the heterogeneous plastic deformation in different areas of the intended geometry that creates various stress states throughout the part. The major objective of this study is to understand the interconnection between springback, level of plastic deformation, degradation of elastic modulus and strain recovery in a CP-Ti material. The mechanical properties of the sheet material and the dependency of mechanical properties on directionality are investi

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6

Cuong, Nguyen Manh, and Mai Xuan Thao. "Adaptive Sampling Recovery of Functions with Bounded Modulus of Smoothness." Acta Mathematica Vietnamica 42, no. 1 (2016): 113–27. http://dx.doi.org/10.1007/s40306-016-0175-y.

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7

Salim, Ramadan, Akshay Gundla, B. Shane Underwood, and Kamil E. Kaloush. "Effect of MSCR Percent Recovery on Performance of Polymer Modified Asphalt Mixtures." Transportation Research Record: Journal of the Transportation Research Board 2673, no. 5 (2019): 308–19. http://dx.doi.org/10.1177/0361198119841283.

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The AASHTO M332 specification includes a relationship between the non-recoverable creep compliance at 3.2 kPa ( Jnr3.2) and the percent of elastic recovery ( R3.2) from the multiple stress creep and recovery (MSCR) test. Justification for the exact position of this curve based on binder performance is largely undocumented in the technical literature as is the singular effect of higher or lower R3.2 values on mixture performance. In this study, nine binders were tested to evaluate the effect of R3.2 on the performance of asphalt mixtures. Binders with similar Jnr3.2 and varying MSCR R3.2 were d

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8

Riester, L., T. J. Bell, and A. C. Fischer-Cripps. "Analysis of depth-sensing indentation tests with a Knoop indenter." Journal of Materials Research 16, no. 6 (2001): 1660–67. http://dx.doi.org/10.1557/jmr.2001.0230.

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The present work shows how data obtained in a depth-sensing indentation test using a Knoop indenter may be analyzed to provide elastic modulus and hardness of the specimen material. The method takes into account the elastic recovery along the direction of the short axis of the residual impression as the indenter is removed. If elastic recovery is not accounted for, the elastic modulus and hardness are overestimated by an amount that depends on the ratio of E/H of the specimen material. The new method of analysis expresses the elastic recovery of the short diagonal of the residual impression in

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9

Sun, Jian, Yan Yi Xu, Yi Jin Chen, Yan Ju Liu, and Jin Song Leng. "Spandex Fiber Reinforced Shape Memory Polymer Composites and their Mechanical Properties." Advanced Materials Research 410 (November 2011): 370–74. http://dx.doi.org/10.4028/www.scientific.net/amr.410.370.

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In this current study, spandex fiber with high elasticity and high recovery ratio were added into shape memory epoxy resin. Compared with pure shape memory resin, the Young’s modulus increases by 28.2%, tensile stress by 49.7% and fracture strain by 16.4% in samples with 20 vol% spandex fiber, while recover time reduces by 36s in samples with 40 vol% spandex fiber.

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10

Garcia Rosales, Carlos Alejandro, Hoejin Kim, Mario F. Garcia Duarte, et al. "Characterization of shape memory polymer parts fabricated using material extrusion 3D printing technique." Rapid Prototyping Journal 25, no. 2 (2019): 322–31. http://dx.doi.org/10.1108/rpj-08-2017-0157.

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Purpose Shape memory polymer (SMP) is capable of recovering its original shape from a high degree of deformation by applying an external stimulus such as thermal energy. This research presents an integration of two commercial SMP materials (DiAPLEX and Tecoflex) and a material extrusion (ME) printer to fabricate SMP parts and specimens. The material properties such as Young’s modulus of the specimens was examined as a process output. Furthermore, stress-strain curve, strain recovery, instant shape-fixity ratio, long-term shape-fixity ratio and recovery ratio of SMP specimens during a thermo-me

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11

Bao, Yi Wang, De Tian Wan, and Yan Qiu. "Estimating Energy Dissipation of Ceramics via H-E Ratio." Key Engineering Materials 434-435 (March 2010): 205–8. http://dx.doi.org/10.4028/www.scientific.net/kem.434-435.205.

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Mechanical properties of ceramics are important for its engineering application. It would be significant and efficient if some properties could be estimated without tests. Energy dissipation capacity of ceramics is estimated in this work via two common parameters, hardness and elastic modulus, which could be obtained from basic data of commercial ceramics or simple tests. The ratio of hardness to reduced modulus H/Er is found to be related to recovery resistance and energy dissipation capacity of the materials, and the related equations were induced. The reduced modulus can be expressed by con

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12

Biswas, Bhabatosh, Biplab Hazra, Nillohit Mukherjee, and Arijit Sinha. "Nanomechanical behaviour of ZrO2 dispersed sisal-based polymeric composites." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 235, no. 8 (2021): 1841–49. http://dx.doi.org/10.1177/14644207211016015.

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Alkali-treated sisal fibre-incorporated silanized ZrO2 dispersed unsaturated polyester composites were fabricated with a filler loading of 5, 15, 25, 35, 45 wt%, respectively. The mechanical characterization of the composites was suitably executed at the sub-micron scale using the nanoindentation technique. Various mechanical properties were derived from the standard nanoindentation measurements namely, nanohardness, reduced modulus, recovery index, residual depth, wear rate and indentation creep, respectively. A marked improvement in the mechanical properties of the unsaturated polyester matr

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13

Cassagnau, Ph, and F. Mélis. "Non-linear viscoelastic behaviour and modulus recovery in silica filled polymers." Polymer 44, no. 21 (2003): 6607–15. http://dx.doi.org/10.1016/s0032-3861(03)00689-x.

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14

Garshelis, I., and W. Fiegel. "Recovery of magnetostriction values from the stress dependence of Young's modulus." IEEE Transactions on Magnetics 22, no. 5 (1986): 436–38. http://dx.doi.org/10.1109/tmag.1986.1064380.

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15

Zhou, Ji, Qiang Cai, and Fu Xu. "Nanoscale Mechanical Properties and Indentation Recovery of PI@GO Composites Measured Using AFM." Polymers 10, no. 9 (2018): 1020. http://dx.doi.org/10.3390/polym10091020.

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Polyimide@graphene oxide (PI@GO) composites were prepared by way of a simple solution blending method. The nanoscale hardness and Young’s modulus of the composites were measured using nanoindentation based on atomic force microscopy (AFM). A nanoscale hardness of ~0.65 GPa and an elastic modulus of ~6.5 GPa were reached with a load of ~55 μN. The indentation recovery on the surface of PI@GO was evaluated. The results show that relatively low GO content can remarkably improve the nanoscale mechanical properties of PI.

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16

WU, XUELIAN, HUI ZHENG, YANJU LIU, and JINSONG LENG. "THERMOMECHANICAL PROPERTY OF EPOXY SHAPE MEMORY POLYMERS." International Journal of Modern Physics B 24, no. 15n16 (2010): 2386–91. http://dx.doi.org/10.1142/s0217979210064976.

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Epoxy shape memory polymers (SMPs) were preparation and their mechanical properties are focused on. Full shape recovery is observed at 150 °C for each polymer, and the SMP with lower hardener content shows a quicker shape recovery speed. In addition to a good thermal stability, glass transition temperature of the polymers increases with increasing hardener content. Of particular attention of DMA test is that the epoxy SMPs show a high storage modulus not only in glass state but also in rubber state. The tension test indicates that both stress at break and corresponding elastic modulus vary wit

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17

Guan, Yedong, Peng Lv, Zuojiang Wang, et al. "Investigating the Influence of Ion Species on the Irradiation-Induced Mechanical Properties of Borosilicate Glass." Applied Sciences 11, no. 8 (2021): 3473. http://dx.doi.org/10.3390/app11083473.

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Investigating the irradiation effects on borosilicate glass is of great significance for understanding the long-term evolutions of this substance in radioactive environments. In the present study, the hardness and modulus of conventional and ion-irradiated borosilicate glass were investigated through nanoindentation measurements. The obtained results show that the maximum decrease of the mean hardness after He and Ar ion irradiation was 8.4% and 17.0%, respectively, when the fluence reached 1.1 × 1015. It was found that the hardness reduction had a significant ionic correlation. Meanwhile, it

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18

Grishin, Alexander M. "Hardness, Young’s Modulus and Elastic Recovery in Magnetron Sputtered Amorphous AlMgB14 Films." Crystals 10, no. 9 (2020): 823. http://dx.doi.org/10.3390/cryst10090823.

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We report optical and mechanical properties of hard aluminum magnesium boride films magnetron sputtered from a stoichiometric AlMgB14 ceramic target onto Corning® 1737 Glass and Si (100) wafers. High target sputtering rf-power and sufficiently short target-to-substrate distance appeared to be critical processing conditions. Amorphous AlMgB14 films demonstrate very strong indentation size effect (ISE): exceptionally high nanohardness H = 88 GPa and elastic Young’s modulus E* = 517 GPa at 26 nm of the diamond probe penetration depth and almost constant values, respectively, of about 35 GPa and 2

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19

Nakayama, Yoshihisa, Kazuhiko Nishida, Tatsuaki Nishigata, and Keiji Inoue. "Decrease and Recovery in Deformation Modulus of Clay Subjected to Repeated Loading." Doboku Gakkai Ronbunshu, no. 589 (1998): 131–40. http://dx.doi.org/10.2208/jscej.1998.589_131.

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20

Musil, J., F. Kunc, H. Zeman, and H. Poláková. "Relationships between hardness, Young's modulus and elastic recovery in hard nanocomposite coatings." Surface and Coatings Technology 154, no. 2-3 (2002): 304–13. http://dx.doi.org/10.1016/s0257-8972(01)01714-5.

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21

Yan, YU Hai, WU Hangyu, and Wang Lin. "Inelastic strain recovery of magnesium alloys and a new elastic modulus model." IOP Conference Series: Materials Science and Engineering 967 (November 19, 2020): 012046. http://dx.doi.org/10.1088/1757-899x/967/1/012046.

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22

Bao, Y. W., and Y. C. Zhou. "Evaluating high-temperature modulus and elastic recovery of Ti3SiC2 and Ti3AlC2 ceramics." Materials Letters 57, no. 24-25 (2003): 4018–22. http://dx.doi.org/10.1016/s0167-577x(03)00258-1.

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23

Elder, Theresa, Damith Rozairo, and Andrew B. Croll. "Origami Inspired Mechanics: Measuring Modulus and Force Recovery with Bent Polymer Films." Macromolecules 52, no. 2 (2019): 690–99. http://dx.doi.org/10.1021/acs.macromol.8b02002.

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24

Mathur, A., A. V. Keerthi, and J. J. Shynk. "Cochannel signal recovery using the MUSIC algorithm and the constant modulus array." IEEE Signal Processing Letters 2, no. 10 (1995): 191–94. http://dx.doi.org/10.1109/97.466707.

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25

Ödeen, S., and R. H. Blanc. "Effects of load and recovery time on the complex modulus of polyoximethylene." Materials Science and Engineering: A 194, no. 1 (1995): L23—L26. http://dx.doi.org/10.1016/0921-5093(94)02714-5.

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26

Kachrimanis, Kyriakos, and Stavros Malamataris. "“Apparent” Young’s elastic modulus and radial recovery for some tableted pharmaceutical excipients." European Journal of Pharmaceutical Sciences 21, no. 2-3 (2004): 197–207. http://dx.doi.org/10.1016/j.ejps.2003.10.014.

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27

Weintraub, Mark V., Nina S. Kozlova, Evgeniya V. Zabelina, and Mikhail I. Petrzhik. "Effect of growth conditions on the mechanical properties of lanthanum-gallium tantalate crystals." Modern Electronic Materials 6, no. 2 (2020): 65–70. http://dx.doi.org/10.3897/j.moem.6.2.63731.

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The effect of growth conditions, anisotropy and polarity of specimens on the mechanical properties of lanthanum-gallium tantalate La3Ta0.5Ga5.5O14 single crystals grown in different atmospheres (argon (Ar), argon with oxygen addition (Ar+(&lt;2%)O2 and Ar+(2%)O2) and air) was studied. The test specimens for the measurements were cut perpendicularly to a 3rd order axis (Z cuts) and in polar directions perpendicular to a 2nd order axis (Y cuts). The polarity of the Y cut specimens was tested by piezoelectric response. The brittleness was evaluated by microindentation at 3, 5, 10 and 25 g loa

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28

Akca, Abdullah Huzeyfe, and Nilüfer Özyurt. "Mechanical Behavior and Recovery of FRC after High Temperature Exposure." Key Engineering Materials 711 (September 2016): 457–64. http://dx.doi.org/10.4028/www.scientific.net/kem.711.457.

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During fire, one or two faces of structural members experience higher temperatures than other faces and the deterioration on these faces may continue after fire. High temperature exposure above 400 °C causes deterioration in strength, modulus of elasticity and durability of concrete. Inclusion of fibers and air entraining agents in concrete mixes may reduce the destructive effects of high temperatures on concrete. Therefore, 8 groups of 0.45 w/c ratio of concrete were designed by using polypropylene fibers as low melting point fibers and hooked end steel fibers as high melting point fibers and

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29

Spencer, James W. "Viscoelasticity of Ells River bitumen sand and 4D monitoring of thermal enhanced oil recovery processes." GEOPHYSICS 78, no. 6 (2013): D419—D428. http://dx.doi.org/10.1190/geo2012-0535.1.

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Samples of Ells River bitumen sand from Alberta, Canada were measured at low frequencies (0.2–205 Hz) to determine the temperature and frequency dependence of velocities and attenuations. The samples were first measured “as received” where the pore space is mostly filled with bitumen but also contains small amounts of air and water. With residual air in the pores, at 5°C, there is strong dispersion in the P-wave modulus and a peak in attenuation at seismic frequencies. The frequency-dependent moduli and attenuations shift by three orders of magnitude in frequency as temperature is increased fr

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30

Yang, Yang, Xiaojia Zhao, Guirong Peng, and Wenpei Liu. "Effects of nitrile rubber and multi-walled carbon nanotubes on damage recovery and physical mechanical properties of carbon fiber–reinforced epoxy composites." High Performance Polymers 30, no. 7 (2017): 856–63. http://dx.doi.org/10.1177/0954008317733527.

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Carbon fiber–reinforced epoxy resin composites (CF/EP) modified with nitrile rubber (NBR) and multi-walled carbon nanotube (CNT) were prepared, and their shape memory behavior and physical mechanical properties were studied. NBR/CF/EP composite showed a relative lower bending strength than pure CF/EP composite, and a remarkable increase of bending strength was achieved for CNT/CF/EP composite. The bending strength of all samples increased after postcure process. All samples showed a similar glass transition temperature, but CNT/CF/EP composite could recover at lower temperature and faster spee

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31

Wang, Jiani, Zhongjun Xue, Meng Guo, and Shuaixiang Zhang. "Using the Rheological Index to Quantitatively Evaluate the Mechanical Performance of High-Elasticity Modified Asphalt." Advances in Materials Science and Engineering 2021 (April 13, 2021): 1–8. http://dx.doi.org/10.1155/2021/6614644.

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High-elasticity modified asphalt is widely used in OGFC and bridge deck paving due to its high viscosity and strong displacement recovery capacity. It can improve the high-temperature deformation resistance and elastic recovery ability of the pavement. Especially in bridge deck pavement, high-elastic modified asphalt can inhibit the formation of reflective cracks and extend the service life. In order to quantitatively evaluate properties of the high-elasticity modified asphalt, rheological properties are studied by using a dynamic shear rheometer (DSR) test. The parameters were fitted with the

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32

Xu, Li, Da Gang Li, Chang Yan Xu, Sai Gang Zhang, and Yan Xiao Shi. "Modulus Packaging Design of the Cylindrical Ceramic Furnishings." Applied Mechanics and Materials 215-216 (November 2012): 577–82. http://dx.doi.org/10.4028/www.scientific.net/amm.215-216.577.

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Packaging design for the typical characteristics of cylindrical ceramic furnishings selects the acrylic and MDF as hoarding material, and uses the 32mm system modular to design structure of hoardings, we meet the needs of different sizes of ceramic furnishings by connections of the hoardings in any combination, and also have taken the cellular edge length of 20mm honeycomb paperboard where a cushioning material and box hoardings are used as secondary recovery into account. The results show that the selection which uses the nylon rope whose diameter is 5mm as the connection of the box works bet

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33

Høibø, Olav, and Geir I. Vestøl. "Modelling the variation in modulus of elasticity and modulus of rupture of Scots pine round timber." Canadian Journal of Forest Research 40, no. 4 (2010): 668–78. http://dx.doi.org/10.1139/x10-021.

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Recovery from the forest-wood chain is directly influenced by how different qualities of logs are used. Logs used directly as load-carrying members in structures are products in which MOE (modulus of elasticity when bending) and MOR (modulus of rupture) are of great importance. To achieve a more optimal bucking process in the forest, models that enable such presorting of logs for quality are desirable. In all, 533 logs from 150 trees were sampled from 10 stands with different site indices and altitudes in southern Norway. Models were developed that predicted MOE and MOR by using different stan

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34

Voyiadjis, George Z., Chahmi Oucif, Peter I. Kattan, and Timon Rabczuk. "Damage and healing mechanics in plane stress, plane strain, and isotropic elasticity." International Journal of Damage Mechanics 29, no. 8 (2020): 1246–70. http://dx.doi.org/10.1177/1056789520905347.

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The present paper presents a theoretical formulation of different self-healing variables. Healing variables based on the recovery in elastic modulus, shear modulus, Poisson's ratio, and bulk modulus are defined. The formulation is presented in both scalar and tensorial cases. A new healing variable based on elastic stiffness recovery in proposed, which is consistent with the continuum damage-healing mechanics. The evolution of the healing variable calculated based on cross-section as function of the healing variable calculated based on elastic stiffness is presented in both hypotheses of elast

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35

Feng, G., and A. H. W. Ngan. "Effects of Creep and Thermal Drift on Modulus Measurement Using Depth-sensing Indentation." Journal of Materials Research 17, no. 3 (2002): 660–68. http://dx.doi.org/10.1557/jmr.2002.0094.

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In modulus measurement by depth-sensing indentation, previous considerations assume elastic recovery to be the sole process during unloading, but in reality creep and thermal drift may also occur, causing serious errors in the measured modulus. In this work, the problem of indentation on a linear viscoelastic half-space is solved using the correspondence principle between elasticity and linear viscoelasticity. The correction term due to creep in the apparent contact compliance is found to be equal to the ratio of the indenter displacement rate at the end of the load hold to the unloading rate.

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36

Piperopoulos, Elpida, Luigi Calabrese, Emanuela Mastronardo, Edoardo Proverbio, and Candida Milone. "Carbon Nanotubes-Filled Siloxane Composite Foams for Oil Recovery Application: Compression Properties." Fibers 8, no. 7 (2020): 45. http://dx.doi.org/10.3390/fib8070045.

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This paper studies the correlation between oil recovery usability and mechanical behavior under compression loads of an innovative oil recovery material. The examined composites are silicone foams filled with carbon nanotubes (CNT). Here, the reutilization of oil recovery processes of the newly developed composite foams is evaluated. In this regard, static and cyclic compressive tests are carried out. Samples filled with pristine and functionalized CNT are tested to evaluate the influence of the filler’s characteristics on the composite foam’s mechanical behavior. The results show that the pre

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37

Wang, Yang, Jijiang Ge, Wen Zhang, Guicai Zhang, Yang Lin, and Kaifei Song. "Surface property and enhanced oil recovery study of foam aqueous dispersions comprised of surfactants–organic acids–nanoparticles." RSC Advances 6, no. 114 (2016): 113478–86. http://dx.doi.org/10.1039/c6ra22988c.

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38

Lebedev, A. B., Yu A. Burenkov, S. A. Pulnev, V. V. Vetrov, and V. I. Kopylov. "Recovery of Young's Modulus During Annealing of Submicrocrystalline Cu and Cu : ZrO2 Composite." Le Journal de Physique IV 06, no. C8 (1996): C8–365—C8–368. http://dx.doi.org/10.1051/jp4:1996879.

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39

Zhou, Liyun, Jianbin Chen, and Weikang Lao. "Study on Elastic Modulus and Recovery Coefficient of Cushioning Materials in Pile Driving." Journal of Materials in Civil Engineering 19, no. 4 (2007): 313–20. http://dx.doi.org/10.1061/(asce)0899-1561(2007)19:4(313).

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40

Chazeau, L., J. D. Brown, L. C. Yanyo, and S. S. Sternstein. "Modulus recovery kinetics and other insights into the payne effect for filled elastomers." Polymer Composites 21, no. 2 (2000): 202–22. http://dx.doi.org/10.1002/pc.10178.

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41

Wang, Ming Yung, Ching Po Lin, and Hsiao Kang Ma. "Investigation of Thermoelectric Power Generation Module on Waste Heat Recovery in a Downdraft Gasifier." Advanced Materials Research 860-863 (December 2013): 437–40. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.437.

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In this study, the thermoelectric power generation (TEG) module is used to recover waste heat from a downdraft gasifier. The performance and optimal operating temperature of TEG module are studied at different locations on the surface wall of catalyst reactor. The simulation model of downdraft gasifier is performed by using the Fire Dynamics Simulator (FDS), its appropriate for the low-speed, thermally-driven flow simulation with an emphasis on incomplete combustion process. The results demonstrate that the simulation temperature of catalyst reactor surface is around 200°C~300°C which is used

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42

Behura, Jyoti, Mike Batzle, Ronny Hofmann, and John Dorgan. "Heavy oils: Their shear story." GEOPHYSICS 72, no. 5 (2007): E175—E183. http://dx.doi.org/10.1190/1.2756600.

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Heavy oils are important unconventional hydrocarbon resources with huge reserves and are usually exploited through thermal recovery processes. These thermal recovery processes can be monitored using seismic techniques. Shear-wave properties, in particular, are expected to be most sensitive to the changes in the heavy-oil reservoir because heavy oils change from being solid-like at low temperatures to fluid-like at higher temperatures. To understand their behavior, we measure the complex shear modulus (and thus also the attenuation) of a heavy-oil-saturated rock and the oil extracted from it wi

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Qin, Xiaoping, Jiapeng Zheng, Liangchuan Li, et al. "Preparation and Performance of an Adsorption Type Gel Plugging Agent as Enhanced Oil Recovery Chemical." Journal of Chemistry 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/970267.

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A novel adsorption type gel plugging agent (ATGPA) was prepared using acrylamide (AM), acrylic acid (AA), diallyl dimethyl ammonium chloride (DMDAAC), 2-acrylamido-2-methylpropanesulfonate (AMPS), formaldehyde (HCHO), resorcinol (C6H6O2), and thiocarbamide (CH4N2S) as raw materials under mild conditions. ATGPA was characterized by infrared (IR) spectroscopy, elemental analysis, and scanning electron microscope (SEM). It was found that ATGPA exhibited higher elastic modulus (G′) and viscous modulus (G′′) than AM/AA gel plugging agent (AAGPA) under the same scanning frequency. It was also found

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Liu, Mu-Yi, Po-Liang Lai, and Ching-Lung Tai. "BIOMECHANICAL EVALUATION OF LOW-MODULUS BONE CEMENT FOR ENHANCING APPLICABILITY IN VERTEBROPLASTY — AN EXPERIMENTAL STUDY IN PORCINE MODEL." Biomedical Engineering: Applications, Basis and Communications 30, no. 01 (2018): 1850002. http://dx.doi.org/10.4015/s1016237218500023.

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Polymethylmethacrylate (PMMA) bone cement has been widely used in vertebroplasty to treat osteoporotic vertebral compression fracture. However, the high compression stiffness of PMMA is suspected to induce adjacent vertebral fracture following vertebroplasty. In the current study, modified low-modulus cement was prepared by combining PMMA with castor oil to solve this problem. The percentage of height recovery and compression stiffness of vertebral bodies was compared after injection of standard PMMA or low-modulus cement. This study aims to investigate whether low-modulus cement is as effecti

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Arya, Shruti, and Kornelia Kulig. "Tendinopathy alters mechanical and material properties of the Achilles tendon." Journal of Applied Physiology 108, no. 3 (2010): 670–75. http://dx.doi.org/10.1152/japplphysiol.00259.2009.

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The purpose of this study was to investigate the in vivo material and mechanical properties of the human Achilles tendon in the presence of tendinopathy. Real-time ultrasound imaging and dynamometry were used to assess Achilles tendon stiffness, Young's modulus, stress, strain, and cross-sectional area (CSA) in 12 individuals with Achilles tendinopathy and 12 age- and gender-matched controls. The results of this study suggest that tendinopathy weakens the mechanical and material properties of the tendon. Tendinopathic tendons had greater CSA, lower tendon stiffness, and lower Young's modulus.

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Shahani, A., D. A. Shiffler, S. K. Batra, and Charles A. Cannon. "Foamed Latex Bonding of Spunlace Fabrics to Improve Physical Properties." International Nonwovens Journal os-8, no. 2 (1999): 1558925099OS—80. http://dx.doi.org/10.1177/1558925099os-800217.

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Strength, abrasion resistance, load at 5% strain (modulus), and strain recovery of dry lay spunlace fabric are improved by the addition of small amounts (≤5%) of acrylic latex binder in the form of a collapsible foam. Bending rigidity is somewhat increased.

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Wang, Yuhui, Jun Zhao, Jianhua Liu, and Ruijun Zhang. "Effect of High Pressure Heat Treatment on Microstructures and Micro-mechanical Properties of CuZn Alloy." High Temperature Materials and Processes 33, no. 4 (2014): 339–44. http://dx.doi.org/10.1515/htmp-2013-0070.

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AbstractThe hardness, elastic modulus, and friction coefficient of the CuZn alloy before and after treatment at 700 °C and 3 GPa for 10 mins were measured by nanoindenter. Effects of high pressure heat treatment on its microstructure and micro-mechanical properties were discussed. The results show that high pressure heat treatment can refine the microstructures of the CuZn alloy, and its hardness, elastic modulus, ratio of hardness, and elastic recovery rate after the 3 GPa treatment increased by 15.44 %, 4.89 %, 8.82 % and 35.90 %, respectively. And the friction coefficient is also decreased.

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Liphardt, Adam, Piotr Radziszewski, and Jan Król. "Homogeneity and Viscoelastic Behaviour of Bitumen Film in Asphalt Mixtures Containing RAP." Materials 14, no. 16 (2021): 4355. http://dx.doi.org/10.3390/ma14164355.

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This article discusses the phenomenon of fresh and RAP binders miscibility and presents test results of bitumen film properties from specially prepared asphalt mixtures. The miscibility of a fresh binder and a RAP binder still has not been fully recognised. The aim of this study was to determine the homogeneity level of the bitumen film based on viscoelastic assessment. In addition, an attempt was made to assess the impact of fresh binder on the binders blending degree. The study included assessment of homogeneity of bitumen film comprising various types of bituminous binders. The assessment w

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Wang, Zheng Liang, Xiao Yang Chen, En Yu Jiang, Di Shan Huang, and Xiao Jin Zhu. "Vibration Analysis of Composite Plate Embedded with SMA Fibers." Advanced Materials Research 139-141 (October 2010): 2331–35. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.2331.

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Shape Memory Alloy(SMA)has advantages of great recovery stress and elastic modulus varied with the temperature, so it can be embedded in composite structure to active control structure deformation and vibration. In this paper, we have deducted the recovery stress at different temperature by modifying the phase-change coefficient Ω of Liang Constitutive Model[1], then base on = /E equation, the recovery stress is translated into recovery strain. By using finite element software ANSYS, the natural frequency of composite plate at influence of recovery stress can be obtained under both ends of f

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Wang, Xiu Fang, Yi Wang Bao, Kun Ming Li, Yan Qiu, and Xiao Gen Liu. "Evaluating Mechanical Properties of Cement Materials by Depth-Sensing Indentation Method." Applied Mechanics and Materials 44-47 (December 2010): 2587–91. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.2587.

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The energy consumption of crushing is directly affected by the mechanical properties of cement materials. The elastic modulus, energy dissipation, recovery resistance and other mechanical properties of cement materials are evaluated based on the depth-sensing indentation method in this work. It is significant and efficient for engineering application. In results, the calculated elastic modulus is close to that measured by dynamic method, being used to verify the correctness of the calculated data. And the calculated energy dissipation of clinker is higher than that of limestone and granite, wh

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