<title>Novel laser grating interferometer (LES) for industrial applications</title>

Abstract

The concept, optomechanica! design and principles of operation of novel laser grating interferometer are described. The system works in on-line, local strain measurement mode and off-line full-field, in-plane displacement/strain measurement mode. The extensometr is fully automatic and integrated with standard loading machine. Its applicability for solving various experimental mechanics (fracture, fatigue) and industrial problems is shown at numerous examples.