Shear measurement using strain gages under large deformation and rotation |
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Authors: | S. Huang A. S. Khan H. Yan |
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Affiliation: | (1) Superconducting Super Collider Project, PB/MK Team d'Escoto Corp., 5810 Red Bird, 75327 Dallas, TX;(2) The University of Oklahoma, 73019 Norman, OK |
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Abstract: | The measurement of shear strain under finite deformation and large rotation by using electrical-resistance metallic foil strain gages is studied both analytically and experimentally. Equations for calculating shear strain and axial and circumferential stretches are derived based on the kinematics of general tension-torsion deformation mode. These equations are applied to analyzing pure torsion experimental data. Comparison is made between results obtained with strain gages and a rotary transducer. It is shown that, in case of large rotation, one simple equation can be used to calculate the shear strain up to 30 percent with adequate accuracy. |
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