Calibration apparatus and method for strain measuring instrument

Details Calibration apparatus and method for strain measuring instrument Calibration apparatus and method for strain measuring instrument

1980-02-25

1981-10-06

Myracle, Jerry W.

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

73761, G01L 2500

Patent

active

042928354

ABSTRACT:
A calibration apparatus and method is presented for calibrating an ultrasonic extensometer which is used to determine the average level of stress in a bolt or stud. The calibration apparatus uses linear displacement transducers and force measuring apparatus to accurately determine the stress-strain relationship of a bolt or stud. Simultaneously, readings on an ultrasonic extensometer strain measuring apparatus are monitored, and the ultrasonic extensometer is calibrated in accordance with the linear transducer and force measuring readings.

REFERENCES:
patent: 3194050 (1965-07-01), Ruge
patent: 3248923 (1966-05-01), Blakeley
patent: 3759090 (1973-09-01), McFaul et al.

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