Magnetic hysteresis properties are sensitive to stress in ferromagnetic materials. This suggests that magnetic measurements are a potential method to evaluate residual stress in steel products. Nevertheless, nondestructive inspection of residual stress by using magnetic properties has been limited, because bulk properties over the entire sample are usually obtained in conventional hysteresis curve measurements through electromagnetic induction, thus, local hysteresis properties are not measured. However, the spatial mapping of local hysteresis properties has been demonstrated recently by ultrasound focusing and scanning. This technique is based on the generation and detection of the acoustically stimulated electromagnetic (ASEM) response. In this study, we investigate the stress dependence of local hysteresis loops through the ASEM response using a tensile testing machine and provide conversion coefficients to estimate tensile stress from the values of local hysteresis properties. The results indicate that the hysteresis properties associated with coercivity, remanent magnetization, and hysteresis loss are promising parameters as an index for evaluating residual stress.

中文翻译：

---

钢的声刺激电磁响应测量的磁滞特性的拉伸应力依赖性

磁滞特性对铁磁材料中的应力敏感。这表明磁性测量是评估钢铁产品残余应力的一种潜在方法。然而，通过使用磁性质对残余应力进行非破坏性检查受到了限制，因为通常在常规的磁滞曲线测量中通过电磁感应获得整个样品的整体性质，因此，未测量局部磁滞性质。但是，最近通过超声聚焦和扫描证明了局部磁滞特性的空间映射。此技术基于声激发电磁（ASEM）响应的生成和检测。在这个研究中，我们使用拉伸试验机通过ASEM响应研究局部磁滞回线的应力依赖性，并提供转换系数以根据局部磁滞特性的值估算拉伸应力。结果表明，与矫顽力，剩余磁化强度和磁滞损耗相关的磁滞特性是有希望的参数，可作为评估残余应力的指标。