Stress Measurement on Carbon Steel Specimen by Consideration of Magnetic-Barkhausen-Noise

In general, all manufacturing processes introduce residual stresses in the manufactured component. Residual stresses affect the design and fabrication of engineering structures, and their field service. So, for structural integrity studies, improvement and development of experimental procedures to determine the residual stresses were be considered by many researcher. In this study, design and prototyping of an appropriate system for non-detective residual stresses evaluation by considering of magnetic-Barkhausen noise were be present. The magnetic-Barkhausen noise analysis used in ferromagnetic materials is based on analysis of rapid irreversible magnetization changes called Barkhausen jumps. Developed system were used to obtained noise voltage level on some loaded carbon steel specimen. The magnetic-Barkhausen noise were dependent to stresses magnitude and direction on the specimen. By this, an appropriate relation for calculation of the stresses from measured voltage were be obtained. Relation coefficient were be corrected by presented calibration procedure. According to obtained results, the magnetic-Barkhausen noise techniques is capable to evaluation of some chemical, physical and mechanical character like residual stress on the industrial component.