DAMAGE DETECTION USING MEASUREMENT RESPONSE DATA OF BEAM STRUCTURE SUBJECT TO A MOVING MASS
Keywords:DAMAGE DETECTION, MOVING MASS, PROPER ORTHOGONAL MODE, INERTIA EFFECT, STRAIN GAGE, ACCELEROMETER
AbstractTHE MOVING LOAD PROBLEM IS DIVIDED INTO TWO TYPICAL TYPES: MOVING FORCE AND MOVING MASS. THE MOVING MASS PROBLEM INCLUDES THE TIME-VARYING MASS EFFECT. THIS WORK CONSIDERS DAMAGE DETECTION OF THE BEAM STRUCTURE SUBJECT TO A MOVING LOAD INCLUDING THE INERTIA EFFECT BASED ON THE ONLY MEASUREMENT DATA FROM STRAIN GAGES AND ACCELEROMETERS WITHOUT ANY BASELINE DATA. THIS EXPERIMENT COMPARES THE FEASIBILITY OF DAMAGE DETECTION METHODS DEPENDING ON THE MEASUREMENT SENSORS OF STRAIN GAGES AND ACCELEROMETERS. THE MEASUREMENT DATA ARE TRANSFORMED TO THE PROPER ORTHOGONAL MODES (POMS) IN THE TIME DOMAIN AND THE FREQUENCY DOMAIN, RESPECTIVELY. THE MAGNITUDE OF THE MOVING MASS AND ITS VELOCITY ARE ALSO EVALUATED AS TEST VARIABLES IN THIS EXPERIMENT. IT IS SHOWN IN THE BEAM TESTS THAT THE MEASURED STRAIN DATA CAN BE MORE EXPLICITLY UTILIZED IN DETECTING DAMAGE THAN THE ACCELERATION DATA, AND THE MASS MAGNITUDE AND ITS VELOCITY AFFECT THE FEASIBILITY OF DAMAGE DETECTION.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License [CC BY] that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).