Abstract
Subject of research: technique for determining residual stresses of the first kind, in samples that are cut from the spar after vibration shock hardening.
 Purpose of research: to increase the accuracy, as well as to improve the methodology for determining residual stresses.
 Methods and objects of research: the object of the study is residual stresses and the algorithm of their processing. The study used a modified order of approximation of data obtained from sensors.
 Main results of research: a new algorithm for processing experimental data is presented, which allows us to obtain more advanced results of studies of residual stresses in samples. A mathematical model of data processing has been developed to implement the algorithm. This mathematical model for determining residual stresses in the structure has a modified order of approximation of data obtained from sensors. Approximation by a polynomial of the sixth degree occurs before the plot is calculated and constructed, and not after its construction and subsequent smoothing, as was implemented earlier. This technical solution contributes to improving the accuracy and correctness of studies for determining residual stresses.
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