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Crack Detection In Cantilever Beam Using Vibration Response

Part of the Springer Proceedings in Physics book series (SPPHY, volume 126)

In the present work, a methodology for predicting crack parameters (crack depth and its location) in a thin cantilever beam using vibration response has been developed. Parametric studies have been carried out using ANSYS Software to evaluate modal parameters (natural frequencies and mode shapes) for different crack parameters. From the analysis, it has been observed that both crack location and crack depth have noticeable effects on the modal parameters of the cracked beam. Also, a certain frequency may correspond to different crack depths and its locations. Based on this, the contour lines of the cracked beam frequencies have been plotted having crack location and crack depth as its axis. The location and depth corresponding to any point on this curve becomes a possible crack location and depth. The identification procedure presented in this study is believed to provide a useful tool for detection of medium size crack in a beam.

Keywords

crack detection vibration response cantilever beam natural frequency. mode shape 

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Copyright information

© Springer Science + Business Media B.V 2008

Authors and Affiliations

  1. 1.Dept. of Mechanical EngineeringHaldia Institute of TechnologyHaldiaIndia
  2. 2.Condition Monitoring GroupCentral Mechanical Engineering Research InstituteDurgapurIndia

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