Damage Detection for Simply Supported Beams Using Mid-Span Displacement Indicator

Abstract:

This paper investigates the detection of damage for simply supported beams to ensure their safety. Based on the analysis of possible kinds of damage may occur, this paper presents a new approach which relies on the fact that any change in local stiffness caused by damage can be reflected by the change of mid-span displacement between the intact and damaged beams. Direct relationship between the change in local stiffness and the measured mid-span displacement values is developed. This approach can identify the geometric locations of damage and then inspection means are used as a complement to find the real damage phenomena within the obtained small region. A numerical example is given to illustrate the feasibility and the effectiveness of the approach. The novel content offered by authors provides a simple, convenient, cost-effective, and nondestructive damage detection approach for simply supported beams.

• Periodical: Applied Mechanics and Materials (Volumes 29-32)
• Pages: 1532-1536
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.29-32.1532
• Online since: August 2010
• Authors: S.J. Zhang, Z.J. Ma
• Keywords: Damage, Detection, Displacement

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