Substructure resonance vibration testing for evaluating damage sensitive features: concept and preliminary results

Masahiro Kurata; Kaede Minegishi; Zhenyun Tang; Akiko Suzuki; Andrew Burton

doi:10.1117/12.2045098

8 March 2014 Substructure resonance vibration testing for evaluating damage sensitive features: concept and preliminary results

Masahiro Kurata, Kaede Minegishi, Zhenyun Tang, Akiko Suzuki, Andrew Burton

Author Affiliations +

Proceedings Volume 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014; 90611E (2014) https://doi.org/10.1117/12.2045098
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

Abstract

This paper presents a testing method that offers an environment to evaluate the modal vibratory characteristics of structural components in building structures using ambient vibration responses, named substructure resonance vibration testing. In the proposed test configuration, a specimen of structural components is installed to a resonance frame that supports large fictitious mass and the resonance frequency of the entire system is set as the natural frequency of a building structure. The resonance frame is interfaced with a quasi-static loading system and a modal shaker. The specimen is damaged quasi-statically and, resonance vibration tests are conducted with the modal shaker at the presence of notable damage. The proposed method enables the vibratory evaluation of realistic damage in structural components without constructing a large specimen of entire structural systems. A proof-of-concept test was conducted with a quarterscale beam-column connection of a mid-rise steel building. The changes in vibratory characteristics were monitored using accelerometers and dynamic strain sensors. The preliminary test results show the effectiveness of the proposed test method for constructing a damage sensitive feature of structural components.

Citation Download Citation

Masahiro Kurata, Kaede Minegishi, Zhenyun Tang, Akiko Suzuki, and Andrew Burton "Substructure resonance vibration testing for evaluating damage sensitive features: concept and preliminary results", Proc. SPIE 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014, 90611E (8 March 2014); https://doi.org/10.1117/12.2045098

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KEYWORDS

Beam shaping

Sensors

Ferroelectric polymers

Testing and analysis

Earthquakes

Composites

Optical simulations

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