Bearing-bypass material system test

Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen

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73810, G01N 336

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active

047182814

ABSTRACT:
A material specimen 12 containing a central hole is bolted (bolt 27) between two bearing guide plates 28 and 29. An applied load control 11 applies an applied load, either tension or compression, to one end of specimen 12 and a bypass load control 13 applies a bypass load to the other end of specimen 12. Both load controls have their control inputs supplied by a single input signal generator 24. The difference between the applied load and the bypass load is transmitted through bolt 27 and plates 28 and 29 to bearing load cells 30 and 31.

REFERENCES:
patent: 3546931 (1970-12-01), Crews, Jr. et al.
patent: 3590633 (1971-07-01), Fuhrmann et al.
patent: 3664179 (1972-05-01), Danko et al.
patent: 3757568 (1973-09-01), Fletcher et al.
patent: 3844167 (1974-10-01), Schutzler
"Bolted Joint Design", R. L. Ramkumar, A symposium sponsored by ASTM Committee D-30 on High Modulus Fibers and Their Composites, American Society for Testing and Materials, Dearborn, Mich., 2-3 Oct. 1979, pp. 376-395.
"Effects of Bearing/Bypass Load Interaction on Laminate Strength", S. P. Garbo, AFWAL-TR-81-3114, Sep. 1-81, pp. 1-25.
"Design Verification Testing of the X-29 Graphite/Epoxy Wing Covers, G. Concannon, 1983 Fall Meeting Proceedings, Society for Experimental Stress Analysis, Nov. 6-10, 1983, pp. 96-102.

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