Results 251 to 260 of about 493,949 (310)

Strain rate sensitivity of toughened epoxy

Iranian Polymer Journal, 2015
The high strain rate behaviour of toughened epoxy is explored under compressive loadings. A cycloaliphatic epoxy was toughened using different types of preformed fillers: epoxy-coated elastomeric poly(dimethylsiloxane) (CSR) and thermoplastic polystyrene microspheres.
Saurabh Chaudhary, Nahid Iqbal, Vikas Mangla, Devendra Kumar, Prasun Kumar Roy   +4 more
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Strain rate sensitivity of hydroxyapatite coatings

Thin Solid Films, 2011
Abstract The strain-rate sensitivity of strength is a significant factor to evaluate the deformation mode of crystalline materials. The strain rate sensitivity of hardness is experimentally investigated here for hydroxyapatite coatings that are sputter deposited onto titanium-coated silicon wafers. These biocompatible HA coatings can provide a strong,
H.S. Tanvir Ahmed, Alan F. Jankowski
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Strain-rate sensitivity index of thermoplastics

Journal of Materials Science, 1993
Strain-rate sensitivity index, m, values of several thermoplastics (HDPE, PP, PMMA, PS, PVC, PC, and PA) were determined at ambient temperature by both variable strain-rate and stressrelaxation methods. Specimens were loaded in tension in the elastic portion of the stress-strain curve at various strain rates and the load was recorded as a function of ...
D. L. Goble, E. G. Wolff
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Strain-rate sensitivity and effects of strain rate in sheet forming

Metals Technology, 1980
AbstractThe strain-rate dependencies of flow strength and strain-hardening behaviour are particularly important in sheet-forming operations because they influence strain distribution and necking resistance. Measurements made in uniaxial and biaxial tensile tests on low-carbon steels have shown that strain-rate sensitivity is a function of both strain ...
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Strain rate sensitivity of flow stress at large strains

Acta Materialia, 1998
Measurements of the strain rate sensitivity of flow stress are critically assessed. Results depend on strain and on the range of strain rates employed. Changes in strain hardening and transients in the flow stress are discussed.
H.P. Stüwe, P. Les
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Limit strain predictions for strain-rate sensitive anisotropic sheets

International Journal of Mechanical Sciences, 1980
Abstract The combined effects of material strain-rate sensitivity and anisotropy on necking or “limit” strain predictions are examined for thin sheets with transversely isotropic properties. Various rate dependent constitutive laws based on flow theory and deformation theory of plasticity are considered.
Neale, K. W., Chater, E.
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CONSTITUTIVE MODELLING OF STRAIN RATE SENSITIVITY

1993
Conventional treatment of strain rate sensitivity measurements from strain change tests involving graphical method is examined. The resultant strain rate sensitivity was found to depend strongly on the magnitude of the change in crosshead velocity. Furthermore, the graphical method is unable to account for the instantaneous strain rate sensitivity ...
C.P. Ling, P.G. McCormick
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Rate-change instrumented indentation for measuring strain rate sensitivity

Journal of Materials Research, 2009
A rate-change instrumented indentation method is introduced to experimentally characterize the strain rate sensitivity of high strength materials, such as metallic glasses and nanocrystalline metals, which generally possess low rate sensitivity at room temperature.
D. Pan, M.W. Chen
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Strain-rate sensitivity of glasses

2017
Although glasses are commonly thought of as ideal brittle materials, a local plastic deformation can be induced by the penetration of sharp objects, such as the indenter tips commonly employed for hardness testing. Since the first experimental verification of this phenomenon, considerable research effort has been devoted to the underlying microscopic ...
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Plane-Strain Plastic Flow of Strain-Rate Sensitive Materials

Journal of Engineering Materials and Technology, 1974
A numerical method based on the modified Hencky and Geiringer equations is described for solving plane-strain metal flow problems of strain-rate sensitive materials. The slip-line field and flow-stress distributions are determined simultaneously using an iterative calculation.
R. G. Fenton, B. Durai Swamy
openaire   +1 more source