Abstract:A high temperature bolt stress monitor, based on the testing of the Transit Time of Longitudinal wave and Shear Wave (TTLSW for short) and on the calculation of the stress through the established stress vs TTLSW equation, has been developed and tested. Lithium Niobate was used for piezoelectric material, gold or silver films were used for coupling material and clamping together method was used to install the transducer. Time interval averaging, zero crossing detect and several other techniques were used to imp… Show more
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