Development of holographic interferometry for investigation of the stress-strain state and quality control of welded structures

摘要

The methods of quality control and determination of the stress-strain state and residual stresses of the welded joints and structures, which were developed on the basis of using holographic interferometry, are presented. Compact holographic units were constructed for examining the welded structures under the conditions of their fabrication and service. Computer systems for processing holographic interferograms and determining fields of displacements, deformations and stresses are developed. These methods and equipment permit investigations of peculiarities of the stress-strain state, distribution of residual welding stresses in the zones of their local concentration, defects in welded joints and structures of metallic and non-metallic materials.