| 金属磁记忆无损检测的研究现状和关键问题 |
| |
| 引用本文： | 王威,易术春,苏三庆,马小平,杨熠奕.金属磁记忆无损检测的研究现状和关键问题[J].中国公路学报,2019,32(9):1-21. |
| |
| 作者姓名： | 王威 易术春 苏三庆 马小平 杨熠奕 |
| |
| 作者单位： | 西安建筑科技大学 土木工程学院, 陕西 西安 710055 |
| |
| 基金项目： | 国家自然科学基金项目（51878548，51578449）；陕西省自然科学基础研究计划重点项目（2018JZS013） |
| |
| 摘 要： | 金属磁记忆检测技术自提出以来,便受到了广泛的重视,作为一种新兴的无损检测方法,能够对铁磁材料的应力集中、早期损伤及损伤程度等进行评估.但是,目前的研究多集中于磁记忆检测的板件试验,对磁记忆的物理模型和应力定量化评估方面的研究不够深入.基于此,总结了国内外关于磁记忆效应机理、磁信号影响因素、磁记忆损伤评价参数及基础试验研究方面的研究现状和进展,对金属磁记忆检测技术亟待解决的关键性问题进行了讨论,并指出金属磁记忆检测技术未来的发展趋势.结果表明:由于磁记忆信号的影响因素非常复杂,缺乏系统的试验和理论依据,目前只是停留在初步理论摸索和简单应用上,影响了该技术的量化发展和工程应用;要利用磁记忆检测技术进行应力定量化评估,必须要明确影响磁记忆信号的多种因素及其影响程度;现有的损伤评价参数都只是提取了磁信号的某些特征,并未进行全面的磁信号特征分析,具有一定的局限性;磁记忆技术的试验研究多集中于不同材料性质的静载拉伸试验和疲劳试验,受载形式单一,对构件性质的研究很少,而钢结构中梁、板等主要构件均承受弯剪应力作用.可见,要将磁记忆检测技术应用于钢结构,必须对弯剪应力作用下的构件磁记忆信号变化规律进行研究.
|
| 关 键 词： | 桥梁工程 金属磁记忆 综述 铁磁材料 无损检测 损伤评价参数 试验研究 |
| 收稿时间： | 2018-04-15 |
Research Status and Critical Problems of Metal Magnetic Memory Testing |
| |
| WANG Wei,YI Shu-chun,SU San-qing,MA Xiao-ping,YANG Yi-yi.Research Status and Critical Problems of Metal Magnetic Memory Testing[J].China Journal of Highway and Transport,2019,32(9):1-21. |
| |
| Authors: | WANG Wei YI Shu-chun SU San-qing MA Xiao-ping YANG Yi-yi |
| |
| Affiliation: | School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China |
| |
| Abstract: | As a novel magnetic nondestructive testing method, the metal magnetic memory (MMM) technique has received extensive attention since it was first proposed. It can be used to assess stress concentration, early damage, and the degree of damage. However, previous studies primarily focused on component experimental research of MMM. Thus, studies of physical models and stress quantitative evaluations have been insufficient. This review outlines the research status and advances of MMM mechanisms, the influence factors of magnetic signals, the appraisal parameters for damage, and the basic experimental research conducted both domestically and internationally. Some critical problems of MMM that must be resolved are examined and the future trend of MMM development is discussed. The results of this review reveal that the influence factors of MMM signals are complicated and that systematic experiments are inadequate, which thus hinder the quantifiable development and engineering application of the MMM technique. Before a stress quantitative evaluation by the MMM technique can be conducted, the influence factors and degrees of MMM signals must be confirmed. Existing evaluation parameters proposed by different researchers have been shown to be suitable only for specific conditions and specimens and thus cannot provide comprehensive analysis for random specimens. The quantitative evaluation parameters of the MMM technique must therefore be further researched. Previous studies of the MMM technique conducted uniaxial tensile and fatigue experiments but rarely performed bending tests. Indeed, many structural members are subjected primarily to bending and shearing stresses during service. Clearly, to apply the MMM technique to a building's steel structure, research on the effect of bending and shearing stresses on MMM signals must be performed. |
| |
| Keywords: | bridge engineering metal magnetic memory review ferromagnetic materials non-destructive test damage evaluation parameter experimental research |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《中国公路学报》浏览原始摘要信息 |
|
点击此处可从《中国公路学报》下载全文 |
|
