Results 211 to 220 of about 602,214 (264)
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Stretchable strain sensor for distributed strain measurement and design of measurement circuit
International Journal of Applied Electromagnetics and Mechanics, 2016We propose a stretchable strain sensor for measurement of distributed strain. The strain sensor is composed of elastic sheets. The elastic modulus of the strain sensor is low. Hence, the strain sensor pasted on human skin or clothes is able to stretch along their shape and stretch. The principle of the strain measurement is a capacitive change based on
Nakamoto, Hiroyuki +4 more
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Measures of Finite Strain and Stress-Strain Relations
Journal of the Physical Society of Japan, 1960Ordinarily, stress-strain relation of Lagrange's representation is written in terms of Lagrange's representation of stress σ i j and the Love measure e i j L . From the above relation, we can derive Reiner's equation in terms of Euler's representation of stress T λµ and the Green measure e λµ β .
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The Stress‐Strain‐Relation of Elasticity and the Measure of Strain
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1960AbstractThe stress‐strain relation of elasticity which is independent of the measure of strain contains the straintensor in zero, first and second order and an infinite number of scalar parameters. When the displacement gradient is infinitesimal, the relation is reduced to sik = (λI + δII) δik + 2μ δik + 4μc ϵiα ϵαk with the four constant scalar ...
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Do we measure strain when we measure strain?
Strain, 1972Errors can occur in the measurements from a strain gauge installation unless certain precautions are taken. Practical solutions are given to minimise the influence of temperature, moisture etc., to ensure an acceptable zero stability.
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Aspects of strain measures and strain rates
Acta Mechanica, 1986In finite homogeneous deformation processes, the principal triad generally rotates with respect to a material element during the deformation. The material derivative of the logarithmic strain is no longer simply related to the rate of deformation tensor, and this is exemplified herein.
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Measurement of Compressive Stress-Strain Response at Small-Strains
Journal of Visualized ExperimentsThis study developed a measurement method capable of precisely evaluating the mechanical behavior of materials and microdevices in the small-strain region. The system integrates a motor-controlled z-stage, a microcontroller board, an operational amplifier circuit, and a force sensor, enabling synchronized force-displacement acquisition through custom ...
Jaehyeong, Kim +3 more
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Electrical Engineering, 1951
Dynamic strain measurements are becoming increasingly important as the gap between safety and economy grows smaller in modern engineering design. The electrical methods described here are used for strain measurement under actual operating conditions.
C. M. Hathaway, K. C. Rock
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Dynamic strain measurements are becoming increasingly important as the gap between safety and economy grows smaller in modern engineering design. The electrical methods described here are used for strain measurement under actual operating conditions.
C. M. Hathaway, K. C. Rock
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THE MEASUREMENTS OF STRAINS IN TIRES
Canadian Journal of Research, 1950Because of obvious complications it is too difficult to calculate the stresses in the cords of a tire. In this work the direct measurement of strains was undertaken. Two techniques will be discussed; (1) the measure of the increase in length of the cords in the outside ply, and (2) a radiographic technique in which the change in length of the cord ...
D. L. Loughborough +2 more
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Journal of Scientific Instruments, 1960
The paper describes a versatile multi-way instrument for measuring periodic strain gauge signals. The strain is either shown on a meter or can be accurately measured on an oscilloscope in terms of resistance change. Fullscale deflexion of the meter is obtained for strains in the order of ±10-4.
T M Dowell, J A Mackinnon
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The paper describes a versatile multi-way instrument for measuring periodic strain gauge signals. The strain is either shown on a meter or can be accurately measured on an oscilloscope in terms of resistance change. Fullscale deflexion of the meter is obtained for strains in the order of ±10-4.
T M Dowell, J A Mackinnon
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