On application of dynamic indentation for estimating the burden of structural elements

The paper shoes the possibility of estimating surface stresses (active, residual, initial) based on mathematical treatment of the fields of residual displacements caused by dynamic indentation and recorded by optical-digital methods (method of electronic digital speckle interferometry). The basis of this methodology is a search for the minimum of the objective function representing the discrepancy of the considerable arrays of experimental data (fields of surface displacements for the object under study) from the results of calculation assemblies for test problems under various values of required parameters (required stresses).