RESEARCH PAPERS: Vibration and Sound

Experimental Diagnosis of Fracture Damage in Structures by the Modal Frequency Method

[+] Author and Article Information
F. D. Ju

Mechanical Engineering Department, University of New Mexico, Albuquerque, New Mexico

M. E. Mimovich

CEI Enterprise, Albuquerque, New Mexico

J. Vib., Acoust., Stress, and Reliab 110(4), 456-463 (Oct 01, 1988) (8 pages) doi:10.1115/1.3269550 History: Received August 15, 1987; Online November 23, 2009


The present paper used the modal frequency method to diagnose the fracture damage experimentally in simple structures, based on the analytical theory of the spring-loaded “fracture-hinge.” It is illustrated that the damage geometry uniquely defines the spring constant of the “fracture hinge,” which is therefore independent of the loading strength, the frequency of vibration, and the damage location. The experiment also measures the change in modal frequencies to locate the damage on the beam. With an accurate analytical model for the experimental samples, the locations of the damages can be predicted to within an accuracy of one percent of the length. The damage intensity is around four percent in accuracy.

Copyright © 1988 by ASME
Your Session has timed out. Please sign back in to continue.






Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In