Hot-gas measurements with ultrasonics.
Hot gas properties measured using ultrasonic thin wire thermometer, discussing ultrasonic probes in shock tubes
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Hot gas properties measured using ultrasonic thin wire thermometer, discussing ultrasonic probes in shock tubes
Improved technique for ultrasonic nondestructive measurement of loads in bolts involves use of pulsed phase-locked loop interferometer. Provides for correction of errors and for automatic readout of loads in bolts. Actual bolt load measured, using transducers rebonded after bolts tightened. Calibration block and thermometer added. Technique applicable to critical fasteners in aerospace applications, nuclear reactors, petroleum and other chemical processing plants, steel bridges, and other structures.