Miniature closed-loop dynamic universal mechanical testing machi

Details Miniature closed-loop dynamic universal mechanical testing machi Miniature closed-loop dynamic universal mechanical testing machi

1988-06-17

1989-08-22

Myracle, Jerry W.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

G01N 300

Patent

active

048584738

ABSTRACT:
Mechanical testing apparatus and methods are disclosed for providing closed-loop dynamic mechanical testing under small loads. The testing machine includes an electrically-driven actuator and light weight load transducer. The load transducer converts the applied load into a voltage feedback signal, which is then fed into a closed-loop control means for regulating the applied load in response, in part, to the voltage feedback signal. The testing machine is extremely sensitive and is capable of testing samples with an applied load force of less than about 20 grams.

REFERENCES:
patent: 3359789 (1967-12-01), Forse
Busnell, A. R. et al., An Apparatus for Fatigue-Testing of Fibres, J. Phys. E, vol. 4, No. 11, Nov. 1971, Gt. Britain, pp. 868-872.

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