Structural Health monitoring of layered structure by strain measurement

Abstract

Structural Health Monitoring (SHM) is a very important technology to realize the sustainable society. Various researches are being conducted for SHM, and it is effective because it avoids accidents and predicts behavior of structures. In this research, we propose a method of SHM for a layered structure, in which the abnormal hierarchy of the structure is identified by strain measurement. First, in the normal condition, the location where the strain is almost 0 on the outer wall of each hierarchy is specified. Then, when an abnormality occurs in a certain hierarchy, a significant value of strain appears in the abnormal hierarchy where the strain was originally 0. We verify the proposed method by numerical simulation. As a result, it was shown that the method was possible to identify the hierarchy where an abnormality occurred.