Microscopic digital imaging strain gauge

摘要

A strain gauge includes an image sensing device (16) having a lens (19), a magnification lens (18) optically coupled to the lens, a positioning mechanism (14) connected to the image sensing device (20), an image capture device for receiving an image from the image sensing device, and a processor (20) for mathematically analysing the image received from the image capture device and to calculate strain. <IMAGE>