Damage detection for applications undergoing axial (membrane) response
- Duffey (T.A.), Tijeras, NM (United States)
- Los Alamos National Lab., NM (United States)
This paper extends and applies recently reported damage identification methods, previously utilized for flexural vibrations only, to axial-type vibrations. The methods are applied to an 8-DOF linear spring-mass system, which models a multi-degree-of-freedom axial or membrane system. The goal of the work is to detect damage (as indicated by reduction in stiffness of one or more of the elements) as well as to locate the damage elements. Two damage detection methods were investigated--the change-in-flexibility method and the damage-index method. Both were found to successfully locate the damaged element(s) for 10% reduction in element stiffness. The change-in-flexibility method indicated damage location even when only a limited number of lower modes were included.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Human Resources and Administration, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 564173
- Report Number(s):
- LA-UR-97-3678; CONF-980127-; ON: DE98001472; TRN: AHC29804%%95
- Resource Relation:
- Conference: 16. IMAC conference, Santa Barbara, CA (United States), 29-31 Jan 1998; Other Information: PBD: [1997]
- Country of Publication:
- United States
- Language:
- English
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