Numerical Investigation on Crack Detection Technique for Electric Connector with Joule Heating Effect

  • Thomas Jin-Chee Liu Department of Mechanical Engineering, Ming Chi University of Technology

Abstract

Using the electro-thermo-structural coupled-field finite element analysis, the crack detection technique with the Joule heating effect for the electric connector is studied and discussed. The physical behavior of the electric connector with an edge crack is investigated numerically. The electric current density, Joule heating temperature and structural deformation are obtained. As a result, the electric current concentration and Joule heating effect can induce a local hot spot or hot band region around the crack tip. Furthermore, the crack tip location can be determined according to the temperature distribution. For the accurate crack detection, two better electric loading conditions are found as follows: (a) shorter electric operating time (tp), (b) larger electric current (I0). The optimal condition , I0 = 100 A and tp = 0.001 s, is found for this crack detection research.

Author Biography

Thomas Jin-Chee Liu, Department of Mechanical Engineering, Ming Chi University of Technology

References

V.Z. Parton and B.A. Kudryavtsev, “Electromagneto- elasticity”, Gordon and Breach, New York, 1988.

G.X. Cai and F.G. Yuan, “Electric current-induced stresses at the crack tip in conductors”, International Journal of Fracture, Vol. 96, pp. 279, 1999.

D. Hasanyan, L. Librescu, Z. Qin and R.D. Young, “Thermoelastic cracked plates carrying nonstationary electrical current”, Journal of Thermal Stresses, Vol. 28, pp. 729, 2005.

T.J.C. Liu, “Crack detection/arrest with Joule heating”, Encyclopedia of Thermal Stresses, Hetnarski, R.B. (Ed.), Springer Science + Business Media Dordrecht, Dordrecht, 2013.

T.J.C. Liu, “Joule heating behaviors around through crack emanating from circular hole under electric load”, Engineering Fracture Mechanics, Vol. 123, pp. 2, 2014.

“Online Materials Information Resource – MatWeb”, http://matweb.com/

“ANSYS 14.0 Mechanical APDL theory reference”, SAS IP, Inc./ANSYS, Inc., USA , 2011.

X. Sun and P. Dong, “Analysis of aluminum resistance spot welding processes using coupled finite element procedures”, Welding Journal, Vol. 79, pp. s215, 2000.

C.L. Tsai, W.L. Dai, D.W. Dickinson and J.C. Papritan, “Analysis and development of a real-time control methodology in resistance spot welding”, Welding Journal, Vol. 70, pp. s339, 1991.

Published
2021-10-25
How to Cite
Liu, T. J.-C. (2021). Numerical Investigation on Crack Detection Technique for Electric Connector with Joule Heating Effect. Journal of the Institute of Industrial Applications Engineers, 9(4), 119. https://doi.org/10.12792/jiiae.9.119
Section
Articles