An output-only damage identification method based on H theory and state projection estimation error (SP2E)

作者：Lenzen Armin^*; Vollmering Max

来源：Structural Control & Health Monitoring, 2017, 24(11): e2003.

DOI：10.1002/stc.2003

• damage identification
• estimation
• output-only identification
• projection techniques in state space
• structural health monitoring

In this article, a new advantageous approach for damage identification of mechanical structures based on state projection estimation error (SP2E) is proposed. The theoretical foundation relies on output-only identification, H theory, estimation error, and state projections. Finally, the proposed damage identification approach is verified by discussing results of laboratory experiments. Therein, structural changes have been applied at a mechanical structure, and the capability to localize them by SP2E has been studied subsequently. By analyzing several different structural alteration positions and extents, an experimental sensitivity study has been conducted, which confirmed the applicability of SP2E for damage localization.

• 出版日期2017-11