This paper presents a low-cost experimental technique to carry out damage assessment of structures using dynamic strain measured by of surface-bonded piezo transducers. The technique is applied on a single module tensegrity structure, 1m×1m in size and then extended to a tensegrity grid structure, 2m×2m size, fabricated using galvanised iron (GI) pipes and mild steel cables. A single piezoelectric-ceramic (PZT) patch bonded on a strut measures the dynamic strain during an impact excitation of the structure. Damage is identified from the frequency response function (FRF) obtained after domain transformation of the PZT patch’s response. For the grid structure, damage is localized using changes in the three natural frequencies observed experimentally and the corresponding mode shapes obtained numerically. The technique is found to be very expedient and at the same time cost effective, especially for preliminary damage detection in the structures.
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ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
October 28–30, 2008
Ellicott City, Maryland, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-4332-1
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Damage Assessment of Tensegrity Structures Using Piezo Transducers Available to Purchase
Ramakanta Panigrahi,
Ramakanta Panigrahi
College of Engineering and Technology, Bhubaneswar, Orissa, India
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Ashok Gupta,
Ashok Gupta
Indian Institute of Technology - Delhi, New Delhi, India
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Suresh Bhalla
Suresh Bhalla
Indian Institute of Technology - Delhi, New Delhi, India
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Ramakanta Panigrahi
College of Engineering and Technology, Bhubaneswar, Orissa, India
Ashok Gupta
Indian Institute of Technology - Delhi, New Delhi, India
Suresh Bhalla
Indian Institute of Technology - Delhi, New Delhi, India
Paper No:
SMASIS2008-355, pp. 21-25; 5 pages
Published Online:
July 13, 2009
Citation
Panigrahi, R, Gupta, A, & Bhalla, S. "Damage Assessment of Tensegrity Structures Using Piezo Transducers." Proceedings of the ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Smart Materials, Adaptive Structures and Intelligent Systems, Volume 2. Ellicott City, Maryland, USA. October 28–30, 2008. pp. 21-25. ASME. https://doi.org/10.1115/SMASIS2008-355
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