Thermal-Mechanical Coupled Electrical Detection System for Dissimilar Metal Composite Components Based on LabVIEW

ZHANG Changqing; CHEN Boyang; CUI Guosheng; LIU Xiao

doi:10.7512/j.issn.1001-2303.2022.11.02

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Thermal-Mechanical Coupled Electrical Detection System for Dissimilar Metal Composite Components Based on LabVIEW
Vol. 52, Issue 11, Pages: 9-13(2022)
DOI： 10.7512/j.issn.1001-2303.2022.11.02

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张昌青，陈波阳，崔国胜，等.基于LabVIEW的异种金属复合构件热-力耦合电检测系统［J］.电焊机，2022，52（11）：9-13.

ZHANG Changqing, CHEN Boyang, CUI Guosheng, et al.Thermal-Mechanical Coupled Electrical Detection System for Dissimilar Metal Composite Components Based on LabVIEW[J].Electric Welding Machine, 2022, 52(11): 9-13.
张昌青，陈波阳，崔国胜，等.基于LabVIEW的异种金属复合构件热-力耦合电检测系统［J］.电焊机，2022，52（11）：9-13. DOI： 10.7512/j.issn.1001-2303.2022.11.02.

ZHANG Changqing, CHEN Boyang, CUI Guosheng, et al.Thermal-Mechanical Coupled Electrical Detection System for Dissimilar Metal Composite Components Based on LabVIEW[J].Electric Welding Machine, 2022, 52(11): 9-13. DOI： 10.7512/j.issn.1001-2303.2022.11.02.

摘要

异种金属连接构件在热-力耦合工况条件下服役时，在热、力的作用下异质连接界面会发生应力变形导致连接界面位置产生空洞、裂纹等缺陷。缺陷影响材料的导电性能，可利用电阻分析技术对裂纹的萌生和扩展进行监测。基于 LabVIEW编程语言环境，利用数据采集卡及霍尔电流、电压传感器、温度、位移传感器设计了一套热-力耦合电检测系统。结合铝/钢连续驱动摩擦焊实例，通过分析动态电阻和延伸率的变化，得到复合构件在服役过程中接头失效机理。实践证明，该系统可为异种金属连接构件的实验研究及现场服役监测提供技术支持。

Abstract

When the dissimilar metal connection components work under thermal coupling conditions, stress deformation occurs at the heterogeneous connection interface due to heat and force, which makes the connection interface location produce voids, cracks and other defects. Defects affect the material’s electrical conductivity and can be monitored for crack sprouting and expansion using resistance analysis techniques. A thermally coupled electrical detection system was designed by using the LabVIEW programming language environment, a data acquisition card and Hall current, voltage transducers, temperature and displacement sensors. The dynamic resistance and elongation during the experiment were analyzed to derive the joint failure mechanism of the composite member during operation. The system can provide technical support for basic experimental research and fieldwork monitoring of heterogeneous metal-connected components with specific examples.

关键词

数据采集热力耦合LabVIEW动态检测

Keywords

data Acquisitionthermodynamic couplingLabVIEWdynamic detection

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