Abstract
Residual stresses significantly affect the behavior of a structure or its individual components. Residual stresses can be determined experimentally. It should be noted that careful procedure and preparation of the experiment are necessary in order to assess the effects on a specific component. The transversal beam of a casting structure underwent a series of measurements as a result of frequent operational faults due to cracks which used to occur in the vicinity of welds and other areas with high concentration of stresses. The measurement was done with a mechanical method of drilling with the use of a tensiometric rosette. Since the hole was drilled into the material to a specific depth, it was necessary to predict stresses in different depth levels of the hole. The prediction of local deformations was based on methods of mathematical statistics supported by MATLAB.
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