Condition Assessment of Concrete Structures by Dynamic Signature Tests


This paper focuses on the correlation between frequency of a structure and degree of damage by testing a full-scale beam both statically and dynamically. To improve the quality of test data and reduce the effort for identifying the fundamental frequency of the beam, preloads are applied to the beam before conducting the dynamic tests. Test results have confirmed that the frequency of the beam itself depends on the load history while that of the beam plus sufficient preloads can be identified independently. This is because preloads can keep cracks open so that the cracked beam vibrates in a linear fashion.

Meeting Name

13th Engineering Mechanics Specialty Conference (1999: Jun. 13-16, Baltimore, MD)


Civil, Architectural and Environmental Engineering

Keywords and Phrases

dynamic signature test; condition assessment; concrete structure; test data; dynamic test; cracked beam vibrates; load history; sufficient preloads; full-scale beam; test result; fundamental frequency; linear fashion

Document Type

Article - Conference proceedings

Document Version


File Type





© 1999 American Society of Civil Engineers (ASCE), All rights reserved.

Publication Date

01 Jun 1999

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