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Stress Relaxation in Cherry Fruit
Biorheology, 1996Stress relaxation in three varieties of cherries was studied using the penetration test with a cylindrical pin, 4 mm in diameter, having a flat tip. One half of the fruit was modified by partial skinning, since experiments show that skin approximately doubles the apparent modulus of elasticity of the cherries. The skin also obscures a part of the fruit’
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Stress relaxation of animal fibres
Biorheology, 1968The phenomenon of stress relaxation in animal fibres, such as wool, is analysed with reference to proposed structural models for keratin. Rate of stress relaxation in wool is analysed by treating stress relaxation as a unimolecular reaction process. In general, the data fit this system reasonably well. Rate constants are given for the two samples under
E, Balasubramaniam, K J, Whiteley
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Stress relaxation of a peripheral nerve
The Journal of Hand Surgery, 1991This study determines the change in tension after an acute nerve lengthening, as would occur in peripheral nerve repair. Stress relaxation, a viscoelastic property, was studied with the use of 24 rabbit tibial nerves. The nerves were divided into three groups and were stretched 6%, 9%, or 12% beyond their original resting length. The mean 1-hour stress
E J, Wall +4 more
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Science, 2007
Two modes of activation explain how an enzyme controls blood vessel responses to oxidative stress, hormones, and neurotransmitters.
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Two modes of activation explain how an enzyme controls blood vessel responses to oxidative stress, hormones, and neurotransmitters.
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Stress relaxation of interim restoratives
Oral Surgery, Oral Medicine, Oral Pathology, 1979Stress relaxation of four temporary restoratives was studied. In the vicinity of ambient mouth temperature, the relaxation characteristics of an unmodified zinc oxide-eugenol cement were more favorable than those of IRM and Cavit. The plastic behavior of gutta-percha temporary stopping precluded assessment of its relaxation at temperatures in excess of
H S, Maerki +3 more
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1991
This chapter explores: The nature of stress and relaxation Breathing techniques Relaxation activities.
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This chapter explores: The nature of stress and relaxation Breathing techniques Relaxation activities.
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Biaxial stress-relaxation in skin
Annals of Biomedical Engineering, 1976Results of 58 biaxial and uniaxial stress-relaxation tests on flat specimens of abdominal rabbit skin are analyzed. It is shown that rabbit skin is a nonlinear viscoelastic material, i.e., the relaxation mode of each stress component depends on the strain (or alternatively on the initial stress).
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Journal of Materials Science, 1971
Beryllia beams were loaded at temperature in four-point bending to a deflection of 0.001 in. or 0.002 in. and the decrease in load necessary to maintain the deflection constant was measured as a function of time. The beryllia was fine-grained, in the range ∼ 1 to 7μm, and the porosity varied between 3 and 21%.
D. G. Walker +2 more
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Beryllia beams were loaded at temperature in four-point bending to a deflection of 0.001 in. or 0.002 in. and the decrease in load necessary to maintain the deflection constant was measured as a function of time. The beryllia was fine-grained, in the range ∼ 1 to 7μm, and the porosity varied between 3 and 21%.
D. G. Walker +2 more
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Nature, 1965
THE purpose of this communication is to direct attention to a similarity in the shape of stress–log time graphs relating to static stress relaxation in solid materials. For a number of high polymers and metals the following relation between the inflexion slope F of the stress–log time curves and the total decrease in stress Δσ was found:
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THE purpose of this communication is to direct attention to a similarity in the shape of stress–log time graphs relating to static stress relaxation in solid materials. For a number of high polymers and metals the following relation between the inflexion slope F of the stress–log time curves and the total decrease in stress Δσ was found:
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Stress relaxation in polycarbonates
Chemical and Petroleum Engineering, 2013A procedure is presented for investigation of stress relaxation in various brands of foreign and domestic polycarbonates in different stages of loading. This study is the first to cite results of experimental investigations of stress relaxation in carbonates subject to long-term tests at a constant strain rate.
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