Abstract
In the present paper a contactless optical method for visioplastic investigation of the displacement and strain field in hammer forging was discussed. Coupled with thermographic measurements the visioplastic investigations were compared with numerical computations using the commercial FE – code QForm. Experiments were performed using stocks of initial dimensions 160 x 160 x 500 mm. For visioplastic investigation the surface was marked with a stud grid. Problems in the correlation process using the commercial software VEDDAC arising from this surface preparation were solved and discussed. The displacement field was used as indicator for damage sensitive regions.