Comparison of Ambient and Forced Vibration Testing of Civil Engineering Structures
نویسندگان
چکیده
In this paper the state the art methods for Ambient (AVT) and Forced Vibration Testing (FVT) are compared. First two new methods to conduct ambient tests are introduced, which allow sensor roving of one group while measuring another group of sensors. The systems compared were concurrently used during a number of tests aimed at damage detection performed on the bridge Z24 in Switzerland. Some of these tests were repetitions of previous tests, giving the possibility of more or less direct comparison. Special attention is paid to the reliability of the methods and their performance for civil engineering structures. Since civil engineering structures are exposed to the environment, their dynamic behaviour is subject to changes, requiring a short testing time. Apart from testing time, the logistic requirements, installation time, costs and personnel need are compared. 1. NEW METHODS TO CONDUCT AMBIENT TESTS 1.
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