Title :
Electrical resistance as an indicator of fatigue
Author :
Constable, James H. ; Sahay, Chittaranjan
Author_Institution :
Thomas J. Watson Sch. of Eng. & Appl. Sci., State Univ. of New York, Binghamton, NY, USA
fDate :
12/1/1992 12:00:00 AM
Abstract :
The dependence of the electrical resistance on strain and fatigue was analyzed for the case of electrical interconnections subjected to a sinusoidal strain. Measurements of the resistance change at the drive frequency and at twice the drive frequency provided greater sensitivity than static resistance measurements. Equations were developed to model the electrical resistance to second order in the strain. The resistance change gives a direct measure of the interconnect strain. The amplitude of the resistance change at twice the drive frequency was found to increase rapidly with fatigue. The ratio of the resistance change at twice the drive frequency to the change at the drive frequency was approximately 20% at low cycle fatigue failure. The ratio was suggested as a fatigue indicator for reliability analyses or for accelerated testing
Keywords :
electric resistance; electronic equipment testing; fatigue; life testing; maintenance engineering; packaging; reliability; accelerated testing; drive frequency; electrical interconnections; electrical resistance; indicator of fatigue; interconnect strain; low cycle fatigue failure; reliability analyses; resistance change; sinusoidal strain; twice drive frequency; Capacitive sensors; Circuit testing; Electric resistance; Electrical resistance measurement; Electronics packaging; Equations; Fatigue; Frequency; Integrated circuit interconnections; Uniaxial strain;
Journal_Title :
Components, Hybrids, and Manufacturing Technology, IEEE Transactions on
