{'fraction_non_alphanumeric': 0.015560165975103735, 'fraction_numerical': 0.0031120331950207467, 'mean_word_length': 5.609589041095891, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Experimental measurement of stress perturbations caused by lateral gauges

Manganin piezo-resistive gauges mounted in an insulating layer of thickness typically 100 µm, oriented perpendicular to the wave front, may in principle be used to measure lateral stresses in a shocked metal sample. However, high resolution simulations strongly suggest that the layer can perturb the stress field in the sample, thereby introducing significant errors into the observed stress measurement. In order to compensate for the perturbations we need to be confident that we are computing them correctly. Experiments are described in which velocity interferometry is used to obtain information about the perturbation, which is independent of that provided by the lateral gauges. The experimental results support the simulations and, therefore, provide strong evidence that lateral gauges, especially when mounted in metals, can significantly perturb the stress field in the sample.