Abstract: The stress field of steel members in service is unevenly distributed under complicated loads. The existing single-path ultrasonic (SPU) sensors can only measure stress in a single ...
Abstract: A hydrogen gas sensor based on peak-delay measurement of ultrasonic time-of-flight (TOF) is reported. The sensor integrates a time-to-digital converter (TDC), a pair of 200 kHz ultrasonic ...
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