Noncontact and Whole Field Strain Analysis with a Laser-Optical Strain Sensor

摘要

The requirements of components and elements in automotive and aircraft industries in apparatus engineering and terotechnology have been steadily increasing during the last decades. Therefore better knowledge about materials is necessary and new approaches are being developed in material testing. Nowadays in mechanical material testing, strains are measured only between two distinctive points on the specimen with probes or by optical analysis of two marked positions on the surface of the specimen. Information about eventual in-homogeneous strain distribution between these two points cannot be obtained by these methods.