Effect of the Tensosensitivity in Metal Film Materials

Abstract

The analysis of literature results concerning tensoresistive effect in thin and thick films of metals, alloys or composite materials based on a metal is presented. Well-known semi-classical and phenomenological models for one- and multilayered film systems are considered, results of their testing are presented, and the degree of conformity of calculated results with experimental ones is specified. A conclusion is drawn concerning significant role of deformation effects, which are taken into account to give satisfactory conformity with experimental data. A least studied problem in physics of thin films concerning the temperature dependence of coefficients of longitudinal and transverse tensosensitivity is analysed. Numerous experimental results, which confirm theoretical conclusions, are presented. Different aspects of practical application of film materials as sensitive elements of strain sensors are analysed.

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