Dinamik test verileri kullanılarak yapılarda hasar tespiti ve hasar tespit yöntemleri konusundaki araştırmalar
During the past few decades, nondestructive damage evaluation (NDE) techniques usingexperimental dynamic test data are widely applied in structures. Technological advancements increase in costeffectivecomputing memory and speed, advances in sensors, and adaptation and advancements of finite elementmethod represent technical developments that have contributed to recent improvements in vibration based damagedetection without memory lackness and long calculation time. In addition, adaptation and advancements inexperimental techniques such as modal testing and development of linear and non-linear system identificationmethods are both reason and results of the abovementioned improvements. Testing and vibration based damageidentification methods that are applied to structures have some advantages and disadvantages against each other.Some of them are very easy to apply to structures, some are not. Some of them are very expensive, some are not.Some of them are very complicated, some are not. Some of them need intensive and extra knowledge of testing andidentification. In this paper, an application of one of these NDE techniques is discussed, which is named Two PointsCondensation technique (TPC). This method helps to detect the damage without applying complicated calculationby using acceleration data gathered during the test of the structure under free or ambient vibration. In this study,the developed technique is applied to the experimental data of a steel truss bridge model structure after introducingdamage by removing an element from the specimen. The results show that the method detects the damage locationand level of damage.
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