YANG Zhuo-jun, DU Jin-qiang, HE Yu-ting, et al. Influence of anodic film on crack monitoring of calyx shape eddy current array sensor[J]. 2016, 35(2): 55-57.
YANG Zhuo-jun, DU Jin-qiang, HE Yu-ting, et al. Influence of anodic film on crack monitoring of calyx shape eddy current array sensor[J]. 2016, 35(2): 55-57. DOI: 10.13873/J.1000-9787(2016)02-0055-03.
As there are anodic films on acturel aircraft aluminium alloy structural parts
specimen of 2A12—T4aluminium alloy with different thickness anodic films are prepared
fatigue crack monitoring system is built up
and the crack monitoring characteristics of calyx shape eddy current array sensor are researched. It’s shown that the sensor can effectively monitor on fatigue cracks aluminium alloy structural parts with precision of 1mm; but the thickness of anodic film has great influence on crack monitoring characteristics of sensor
as the thickness of film increasing
amplitude of output signal of sensor is increased and crack monitoring capiability is decreased.