Crack growth rate measuring instrument

Details Crack growth rate measuring instrument Crack growth rate measuring instrument

1990-09-13

1991-04-09

Raevis, Robert

Measuring and testing

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

By loading of specimen

G01N 1908

Patent

active

050054236

ABSTRACT:
A fatigue crack growth rate measuring instrument serves to screen specimens of materials by cycling of load at a constant displacement and recording the load .upsilon. cycle characteristics and calculating the da/dN v. .DELTA. K for ascertaining if the specimen falls within or without the range of acceptability.

REFERENCES:
patent: 3138016 (1964-06-01), Orner
patent: 3323356 (1967-06-01), Arias
Hoffelner, "Fatigue Crack Growth at 20 kHz-A New Technique", J. Phy. E.: Sci. Instrum., vol. 13, No. 6, Jun. 1980, pp. 617-619.

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