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Proceedings Paper

A novel fatigue monitoring system utilizing bio-inspiration concept of data track of tree rings
Author(s): Shi Bai; Zhi Zhou; Jinping Ou
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Paper Abstract

The conventional analysis of fatigue damage accumulation based on the whole strain course has defects such as: high cost, difficult to replace the strain sensors, complex system and unadaptable to engineering application et al. The data track of tree rings links the fatigue monitoring and the bio-inspiration concept together. A counter based on Digital Signal Processing (DSP) technology is adopted to record the realtime characteristic of fatigue behavior: the amplitude of strain, the number of cycles and the stress state. Through the realization of the fatigue analysis algorithm by the DSP hardware technique a novel fatigue monitoring system is developed. The data track of tree rings can definitely and increasingly record the environmental characteristic of different environment growing condition, and this fatigue meter can record the local fatigue course: the amplitude of strain, the number of cycles and the stress state. Thus, it is convenient to realize the analysis of fatigue damage accumulation and give an early warning for structures.

Paper Details

Date Published: 18 April 2011
PDF: 6 pages
Proc. SPIE 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011, 79833O (18 April 2011); doi: 10.1117/12.882060
Show Author Affiliations
Shi Bai, Harbin Institute of Technology (China)
Zhi Zhou, Dalian Univ. of Technology (China)
Jinping Ou, Dalian Univ. of Technology (China)


Published in SPIE Proceedings Vol. 7983:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011
H. Felix Wu, Editor(s)

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