Garstka Tomasz, Szota Piotr, Mróz Sebastian, Stradomski Grzegorz, Gróbarczyk Jakub, Gryczkowski Radosław
Faculty of Production Engineering and Materials Technology, Czestochowa University of Technology, 42-201 Częstochowa, Poland.
Serwistal Sp. z.o.o., 2A Dojazdowa Str., 19-300 Ełk, Poland.
Materials (Basel). 2024 Sep 18;17(18):4584. doi: 10.3390/ma17184584.
Among non-destructive testing methods, a group dedicated to the assessment of the state of residual stresses can be distinguished. The method of measuring residual stresses using the Barkhausen noise method has many advantages, as evidenced by the number of publications. The residual stresses in metal products are important for the further processing of such metal, such as laser cutting or bending. The results presented in this work are of an experimental nature, and the presented method of calibration of measuring heads shows how various research techniques can be used to correlate results. The research was carried out for structural steel due to the market share of this type of steel. The method can be used to measure the residual stresses in ferromagnetic metal products in order to assess their directions and quantify them. A prerequisite for the use of this measurement method is that the amplitude and geometry of the Barkhausen noise are adequately correlated to the specific values of the state of stress depending on the tested steel grade or other metals. In this study, a method for calibrating measuring sensors for the residual stress measurements is presented, as developed by the authors. The method involved conducting bending tests in both numerical modeling and experimental tests. During the bending tests, changes in the magnetic field (Barkhausen noise waveform) were recorded, taking into account the state of elastic stresses. Correlating the results of the numerical calculations and Barkhausen noise measurements made it possible to determine the quantitative values of the residual stresses in the steel sheets. Thanks to the method used, very accurate measurement is possible, and the obtained results are repeatable.
在无损检测方法中，可以区分出一组专门用于评估残余应力状态的方法。使用巴克豪森噪声法测量残余应力的方法具有许多优点，这从出版物的数量就可以得到证明。金属制品中的残余应力对于这种金属的进一步加工（如激光切割或弯曲）很重要。这项工作中呈现的结果具有实验性质，所展示的测量头校准方法表明了如何使用各种研究技术来关联结果。由于这种类型钢材的市场份额，研究是针对结构钢进行的。该方法可用于测量铁磁金属制品中的残余应力，以评估其方向并进行量化。使用这种测量方法的一个前提是，根据所测试的钢种或其他金属，巴克豪森噪声的幅度和几何形状与应力状态的特定值有足够的相关性。在本研究中，作者提出了一种用于残余应力测量的测量传感器校准方法。该方法包括在数值建模和实验测试中进行弯曲试验。在弯曲试验期间，考虑弹性应力状态，记录磁场的变化（巴克豪森噪声波形）。将数值计算结果与巴克豪森噪声测量结果相关联，使得能够确定钢板中残余应力的定量值。由于所使用的方法，非常精确的测量是可能的，并且所获得的结果是可重复的。
