SEM TD Video - Optical Methods
Optical interferometry makes various phenomena that we cannot see with usual light visible. In the examples in this movie, a technique known as Electronic Speckle-Pattern Interferometry (ESPI) visualizes concentrated in-plane deformation. The specimen is applied a monotonic tensile load at a constant pulling rate. Depending on the pulling rate, the concentrated deformation behaves differently.
Optical interferometry makes various phenomena that we cannot see with usual light visible. In the examples in this movie, a technique known as Electronic Speckle-Pattern Interferometry (ESPI) visualizes concentrated in-plane deformation. The specimen is applied a monotonic tensile load at a constant pulling rate. Depending on the pulling rate, the concentrated deformation behaves differently.