Piezoelectric thin film has been used to visualize back surface defects in plates. When the plate with a back surface defect is deformed, the resultant strain distribution in the front surface reflects the shape of the de fect. Such surface strain distribution can be measured by scanning the electrostatic voltmeter over the piezoelectric film mounted on the front surface. In view of significant troubles of nuclear power plants due to defec t in pipes such as cracks and wastages, new nondestructive techniqu...
英字タイトル:
Measurement and Simulation of Detection of Defects on Inner Wallof Cylindrical Pipe by Piezoelectric High-polymer Film.