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Three different vibration based damage assessment techniques have been compared. One of the techniques uses the ratios between changes in experimentally and theoretically estimated natural frequencies, respectively, to locate damage. The second technique relies on updating of an FEM, based on experimentally estimated natural frequencies where the stiffness matrix is given as a function of damage size and location. The last technique is based on neural networks trained with the relative changes in natural frequencies. All techniques, especially the neural networks based technique, seem to be very promising.

Additional information

Authors: KIRKEGAARD P H, Aalborg University (DK);RYTTER A, JRC Ispra (IT)
Bibliographic Reference: Paper presented: Colloquium Knowledge Support Systems in Civil Engineering, Bergamo (IT), March 16-17, 1995
Availability: Available from (1) as Paper EN 38826 ORA
Record Number: 199510293 / Last updated on: 1995-03-08
Original language: en
Available languages: en