| Title |
2-Step Damage Assessment Method of 3-D Truss structures Using Extended Parametric Projection Filter Theory |
| Authors |
Mun Hyo-Jun ; Suh Ill-Gyo |
| Keywords |
Extended parametric projection filter ; KECR ; Effective mass ratio ; 2-step damage identification method |
| Abstract |
In this paper, a study of 2-step damage detection for space truss structures using the extended parametric projection filtering algorithm is presented. Space truss structures are composed of many members, so it is difficult to find damaged members from the whole system. Therefore, damage detection take use of 2-step damage identification method. First, kinetic energy change ratio are used to find damage region including damaged members and then detect damaged members using extended parametric projection filter algorithm in damage region. The results of 2-step damage identification method that apply to examples are next. First, in the case of finding damage region using kinetic energy change ratio, the ratios of nodes including damage members are large, so we can consider as this measure is effective. Next, in the case of finding damaged members at nodes of damage regions using extended parametric projection filter algorithm, the stiffness ratio of damaged members converge exactly. |