Nondestructive detection of inside cracks and delamination in carbon-fiber-reinforced plastics using superconducting quantum interference device

摘要

Carbon-fiber-reinforced plastic (CFRP) is a complex material, which is used in aircraft and space structures. The establishment of nondestructive evaluation (NDE) method for such structures is the urgent necessity. The potential of the NDE method using superconducting quantum interference device (SQUID) to detect inside defects in CFRP such as deep-lying cracks and inside shallow delamination was experimentally investigated using the current injection method. The results clarified that the method could he applied to such inside defects. The detection ability for the deep-lying delamination is discussed.