无损检测在钢结构疲劳损伤检测中的应用研究

钢结构疲劳问题日益突出,目前人们对于钢结构疲劳损伤问题检测手段极为有限,纵观国内国外的研究进展,钢梁焊缝疲劳损伤检测技术多种多样,但存在着检测时间长、效率低、需要对检测表面进行处理等缺点,现有检测技术只能寻找已经存在的缺陷,不能发现和预测将会要发生的缺陷,因此有必要研究一种新的检测方法来推进钢梁焊缝疲劳损伤的无损检测技术的发展。金属磁记忆技术相较传统无损检测技术有着无损伤、灵敏度高、早期检测等特点优势,文章着重比较了金属磁记忆检测技术与传统无损检测技术的优缺点,为钢结构的疲劳损伤问题提供了更多更好的检测手段。

The fatigue problem of steel structure is becoming increasingly prominent.At present,the detection methods for fatigue damage of steel structure are very limited.Throughout the research progress at home and abroad,there are a variety of fatigue damage detection techniques for steel beam welds.However,there are some shortcomings,such as long detection time,low efficiency,and there is need to treat the inspection surface,and so on.The existing detection technology can only find the existing defects,but can not find and predict the defects that will occur.Therefore,it is necessary to study a new testing method to promote the development of non-destructive testing technology for fatigue damage of steel beam welds.Compared with the traditional non-destructive testing technology,the metal magnetic memory technology has the advantages of no damage,high sensitivity and early detection.This paper focuses on the comparison of the advantages and disadvantages of the metal magnetic memory testing technology and the traditional non-destructive testing technology.It provides more and better testing methods for fatigue damage of steel structures.