Dependence of Creep Strain and Fatigue Behavior on Surface Characteristics of Resistive Strain Gauges.

ABSTRACT: Creep behavior and fatigue life are important performance indexes that affect the long-term stability of resistive strain gauges. The resistive strain gauges, fabricated with wet etching and resistance trimming, present micro-morphology such as textures and uneven edges on the surface and side-wall profile of sensitive grids. This paper observed the micro-morphology of the sensitive grids by microscope and analyzed its range of geometric dimensions. A sine function was used to establish equivalent geometric models for the surface textures and side-wall profile. Based on time hardening theory and the S-N curve, the dependence of micro-morphology of metal resistive strain gauges on creep behavior and fatigue life was studied. The results indicate that the roughness of micro-morphology has an

SUBMITTER: Zhao Y 

PROVIDER: S-EPMC8955004 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature