An Overview of Stress and Strain Measurement Techniques

Abstract

Stress and strain are mechanical behaviour of materials, subjected to mechanical or thermal loading. The detrimental effect of such loading is the ultimate failure of materials due to generation of high stress and strain. Therefore, measurement and prediction of stress and strain values help in proper design and maintenance of engineering equipment and structures. The present contents elaborate and summarize different methods adopted by researchers for mechanical stress and strain measurements. The content is focused to provide an overview regarding the measurement techniques adopted for strain measurement. The analysis holds information regarding working principle of different strain measuring technique along with a brief description about the history of strain measurement. Special attention has also been devoted for explanation of thermal stress and strain measurement techniques. The modern non-contact techniques have evolved as a potential tool for such measurements even at higher temperature conditions.