J0406-4-1 Development of on-site NDE Device based on Guided Wave Propagating Using Piezoelectric Element

Abstract

Structures have the potential for a damage accumulation and unpredicted failure. In order to guarantee a stable service and prevent any fatal flaw, it is important to monitor the condition of them. On the other hand, it implies increasing the maintenance costs. From such a background, the concern with Low-Cost Structural Health Monitoring System has been growing. This report presents the development process of the not only low-cost but also small and on-site measurement device based on the pulse-echo method, which is consisted of a microcomputer, PZT, power supply and some cheap amplifiers and parts. The trial production was verified in experiments using steel plates that the crack can be characterized quantitatively. The result shows that the proposing device has enough capability for achieving the above object.