Temperature Coefficient of the Modulus of Rigidity of Aircraft Instrument Diaphragm and Spring Materials (1931)
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KEPORT NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS did not conform to the primary assumptions under- be noted in the computation of m that all of the exper- lying formula (1). These assumptions are that the imental values of rn' are negative in sign. wire is straight and that it is free from… … Figure 5.-Change in the rigidity modulus of nickel silver with temperature after va- rious heat treatments The moment of inertia I is in pounds-inches squared and the period F in seconds 2000 4000 6000 6000 10000 Tensile stress, Ib./sq. in. Figure 4.-EJrect of tensile stress and temiwatiire on the…
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