The development of electrical strain gages

De Forest, A V (Massachusetts Institute of Technology) Leaderman, H (Massachusetts Institute of Technology)
naca-tn-744
1940


The design, construction, and properties of an electrical-resistance strain gage consisting of fine wires molded in a laminated plastic are described. The properties of such gages are discussed and also the problems of molding of wires in plastic materials, temperature compensation, and cementing and removal of the gages. Further work to be carried out on the strain gage, together with instrument problems, is discussed.

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