Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified electrical sensor or system
Patent
1990-09-19
1992-02-11
Myracle, Jerry W.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Specified electrical sensor or system
73770, 73779, 73786, 324209, 340665, G01B 716
Patent
active
050866516
ABSTRACT:
Devices and methodology are provided for measuring mechanical strain in a structural member. The devices and methodology utilize a material which undergoes a change in phase when strained so that measurement of the phase change indicates strain. Preferably the phase change material is a transformation induced plasticity steel alloy. The elements may be configured as gauges secured to a structural member, but also the elements may perform as part of the structure. A plurality of elements may be organized into a monitoring system, either passive or active, for a complex structure.
REFERENCES:
patent: 4931730 (1990-06-01), Olsen et al.
G. J. Kostyrko, Strain Gage Instrumentatin, 5-Story Steel & Concrete Building, Proceedings of the 57th Annual Convention of the Structural Engineers Association of California (Oct. 4-9, 1988).
Dove, R. C. et al., Experimental Stress . . . Measurement, Charles E. Merrill Books, Inc., Columbus, Ohio, pp. 13-15.
Thompson Larry D.
Westermo Bruce
Martin Timothy J.
Myracle Jerry W.
Rewoldt Dana S.
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