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Jan 16, - Derivation of Bimetallic Strip Stress in Roark's Formulas. where subscripts a and b indicate the two different metal layers, E are the Young's moduli, t are the layer thicknesses, w is the beam width, γ is the coefficient of thermal expansion, and ΔT is the elevation in temperature.

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A bimetallic strip is used to convert a temperature change into mechanical displacement. . “Residual stresses in surface coatings and their effects on interfacial debonding.” Key Engineering Materials (Switzerland). Vol. , pp. ‎History · ‎Applications · ‎Clocks · ‎Thermostats.

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