Community Research and Development Information Service - CORDIS

Abstract

The accumulation of damage in a structure will cause a change in its dynamic characteristics. Vibration based inspection (VBI) measures these dynamic characteristics during the lifetime of the structure and uses them as a basis for identification of structural damage. This paper investigates the possibility of using vibrational based inspection on a four storey RC-building, which has been subjected to an earthquake. The investigations are based upon results from a pseudo-dynamic test performance on a full scale model at the European Laboratory for Structural Assessment (ELSA). The effectiveness of two different methods for damage assessment, namely neural network and perturbation methods, are evaluated and compared. The neural network is trained by using results from finite element analysis, where the changes in the dynamic characteristics, for example natural frequencies, are used as input, and information about the damage state is used as output. The possibilities of localising the damage and giving an estimation for the damage level are evaluated. The method based on perturbation techniques is used to identify the most probable damage scenario.

Additional information

Authors: RYTTER A, JRC Ispra (IT);NEGRO P, JRC Ispra (IT)
Bibliographic Reference: Paper presented: International workshop on structural damage assessment using advanced signal processing procedures, Pescara (IT), May 29-31, 1995
Availability: Available from (1) as Paper EN 38980 ORA
Record Number: 199510713 / Last updated on: 1995-07-07
Category: PUBLICATION
Original language: en
Available languages: en