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http://dx.doi.org/10.7234/kscm.2009.22.1.009

Crack Detection of Carbon Fiber Reinforced Composites by Electric Potential Method with Bridge Circuit Concept  

Hwang, Hui-Yun (안동대학교 기계공학부)
Publication Information
Composites Research / v.22, no.1, 2009 , pp. 9-14 More about this Journal
Abstract
This paper suggested the electric potential method with a bridge circuit concept for the detection of the location and crack growth of carbon fiber reinforced composites to reduce the measurement numbers. 2 pairs of electrodes were fabricated on the center cracked thin composite plates, and potential changes at one pair of adjacent electrodes were observed while external voltage input was applied to the other pair of adjacent electrodes. The effects of the size and interval of electrodes, location and propagating direction of center cracks were investigated by experiments and finite element analyses. Detectable crack size was influenced by the electrode interval rather than the electrode size, and crack detection was enhanced as the size and interval of electrodes were smaller. Besides, output potential changes were larger as the crack grew and was nearer the voltage input electrodes.
Keywords
electric potential method; bridge circuit; carbon fiber reinforced composites; crack detection;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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