红外检测(infrared testing,IRT)近年来得到了极速增长,围绕IRT的技术成为各个领域的重要研究方向。本文梳理分析了国内外多年来关于IRT技术的文献,总结了该领域研究方向国内外未来研究热点。基于web of science(WOS)核心合集数据库,运...红外检测(infrared testing,IRT)近年来得到了极速增长,围绕IRT的技术成为各个领域的重要研究方向。本文梳理分析了国内外多年来关于IRT技术的文献,总结了该领域研究方向国内外未来研究热点。基于web of science(WOS)核心合集数据库,运用CiteSpace数据挖掘及分析平台对这一研究领域的最新进展进行深入分析。对发文数量、国家、作者、研究机构、关键词、被引文献及期刊进行多维度探讨,力求全面剖析此领域研究热点及发展趋势。本文重点跟踪了金属部件缺陷检测、复合材料缺陷检测与红外图像绝缘体检测技术研究方向。展开更多
传统的水下交流电磁场检测(alternating current filed measurement,ACFM)在仿真设计时未考虑外壳材料对检测信号和设备各个参数之间的影响。针对此问题,建立了ACFM仿真模型,对磁芯大小与形状进行了优化设计,缩减探头尺寸;分析了无损检...传统的水下交流电磁场检测(alternating current filed measurement,ACFM)在仿真设计时未考虑外壳材料对检测信号和设备各个参数之间的影响。针对此问题,建立了ACFM仿真模型,对磁芯大小与形状进行了优化设计,缩减探头尺寸;分析了无损检测探头的外壳材料的电导率和磁导率对检测信号的影响,并进行了仿真分析;分析出最适用于深水无损检测(nondestructive testing,NDT)的外壳材料为304不锈钢和最佳电流频率,并对无损检测探头的各参数进行了优化设计。结果表明:外壳材料的电导率达到10^(7) S/m时,磁性传感器检测到的特征信号会反向和电流的频率大于7 kHz会导致检测信号严重失真;外壳材料的磁导率对z方向的磁感应强度B_(z)、x方向的磁感应强度B_(x)的幅值衰减严重。研究成果有利于水下无损检测设备的研发设计。展开更多
Steel pipes are categorized into seamless pipes and welded pipes,and particularly the welded pipes’ NDT(Non-Destructive Testing)has been a challenging problem.In the case,on the basis of the presentation of welded pi...Steel pipes are categorized into seamless pipes and welded pipes,and particularly the welded pipes’ NDT(Non-Destructive Testing)has been a challenging problem.In the case,on the basis of the presentation of welded pipes,the analysis of its relevant testing key is carried out.Afterwards,the MFL(Magnetic Flux Leakage)methods for longitudinally welded line-pipes and for helically welded pipes are respectively proposed.Meanwhile,their relevant experiments are conducted,and finally the two technologies for the two types of welded pipes are verified well.展开更多
文摘红外检测(infrared testing,IRT)近年来得到了极速增长,围绕IRT的技术成为各个领域的重要研究方向。本文梳理分析了国内外多年来关于IRT技术的文献,总结了该领域研究方向国内外未来研究热点。基于web of science(WOS)核心合集数据库,运用CiteSpace数据挖掘及分析平台对这一研究领域的最新进展进行深入分析。对发文数量、国家、作者、研究机构、关键词、被引文献及期刊进行多维度探讨,力求全面剖析此领域研究热点及发展趋势。本文重点跟踪了金属部件缺陷检测、复合材料缺陷检测与红外图像绝缘体检测技术研究方向。
文摘Steel pipes are categorized into seamless pipes and welded pipes,and particularly the welded pipes’ NDT(Non-Destructive Testing)has been a challenging problem.In the case,on the basis of the presentation of welded pipes,the analysis of its relevant testing key is carried out.Afterwards,the MFL(Magnetic Flux Leakage)methods for longitudinally welded line-pipes and for helically welded pipes are respectively proposed.Meanwhile,their relevant experiments are conducted,and finally the two technologies for the two types of welded pipes are verified well.