Cross-Modal Strain Energy Method for Estimating Damage Severity

A newly developed damage severity estimation method, termed as cross-modal strain energy (CMSE) method, which is capable of accurately estimating the damage magnitude of multiple damaged members, is presented. While all existing damage severity estimation methods that utilize modal strain energy either employ an iterative solution procedure or involve significant approximations, the CMSE method is an exact, noniterative solution method. Furthermore, the development of the CMSE method is under the assumption that the mass distributions of the baseline and damaged structures are unknown, but identical. Implementing this method requires only the information of a few modes measured from the damaged structure. Numerical studies are demonstrated for a 3-D, 5-story frame structure based on synthetic data generated by finite element models.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339399
• Authors:
  • Hu, Sau-Lon James
  • Wang, Shuqing
  • Li, Huajun
• Publication Date: 2006-4

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 429-437
• Serial:
  • Journal of Engineering Mechanics
  • Volume: 132
  • Issue Number: 4
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9399
  • EISSN: 1943-7889
  • Serial URL: http://ascelibrary.org/journal/jenmdt

Subject/Index Terms

• TRT Terms: Bridge engineering; Bridge members; Estimation theory; Finite element method; Framed structures; Modal analysis; Strain measurement; Structural analysis; Structural deterioration and defects
• Uncontrolled Terms: Damage assessment; Modal strain energy
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01026256
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 29 2006 9:12AM