Error Analysis for Shock Equation of State Measurements in Polymers Using Manganin Gauges

Piezoresistive manganin gauges undergo a change in resistance as a function of applied stress and have been used in shock experiments to measure both longitudinal and transverse stress. Careful studies are required to calibrate the gauges where the experimental conditions are well-known. In this paper, a series of shock experiments on PMMA, where manganin gauges are used as input, propagated, and transverse gauges to measure shock velocity and stress will be analyzed to understand the sources and magnitude of error. Discussion of error propagation through the experiment will be provided.