The direct measurement of the shock yield strength of LY-12AL with manganin gauges
Conference
·
OSTI ID:175435
- Southwest Institute of Fluid Physics, Sichuan (China)
One of the most important issues in the field of dynamic response of materials is the exact determination of the lateral stresses in shock loaded solids. The only direct technique to measure the stresses is by using piezoresistance stress gauges. In this paper we present the results of planar impact experiments with LY-12AL specimen, using parallel and transverse manganin gauges to measure the longitudinal and lateral tresses in the targets, respectively. The experimental records showed the invalidity of the present calibration curves for transverse gauges. We developed a modified model for the transverse gauges based on the elasto-plastic properties of the gauges. At last we obtained a reasonable shock yield strength curve for Ly-12 AL in the stress range of 0.8-8 GPa.
- OSTI ID:
- 175435
- Report Number(s):
- CONF-950686--
- Country of Publication:
- United States
- Language:
- English
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