FAILURE BEHAVIOR MONITORING AND EVALUATION OF STEEL-CONFINED REINFORCED CONCRETE COLUMNS BY ACOUSTIC EMISSION UNDER QUASI-STATIC LOADING
THE MECHANICAL BEHAVIOR AND FAILURE EVOLUTION OF STEEL-CONFINED AND UNCONFINED REINFORCED CONCRETE (RC) COLUMNS ARE INVESTIGATED UNDER QUASI-STATIC LOADING THROUGH ACOUSTIC EMISSION (AE) SIGNAL. THE EXCELLENT HYSTERESIS RESPONSE, LIGHTER DAMAGE CHARACTERISTICS AND DELAYED CATASTROPHE OF STEEL–CONFINED RC COLUMNS ARE VERIFIED. CHARACTERISTIC AE PARAMETERS WERE OBTAINED DURING THE TEST PROCESS, AE MONITORING RESULTS INDICATED THAT THE PROGRESSIVE DEFORMATION OF THE TEST SPECIMENS OCCURRED IN THREE STAGES REPRESENTING DIFFERENT DAMAGE CONDITIONS. EXTENDED AE FEATURES, INCLUDING DAMAGE SEVERITY, MODIFIED CUMULATIVE SIGNAL STRENGTH RATIO, SENTRY FUNCTION, AND B-VALUE ARE CALCULATED TO EVALUATE THE DAMAGE GROWTH, FAILURE MECHANISM, AND ESTIMATE THE CRITICAL POINTS. THE SYNTHESIS ANALYSIS OF MULTI-INDICATORS MUTUAL VERIFY, OVERCOME THE DISADVANTAGES OF USING SINGLE-INDICATOR EVALUATION, AND SUCCESSFULLY BE USED TO DETERMINE THE COMPLEX DAMAGE PROPERTIES, IDENTIFY DAMAGE STATUSES, AND PROVIDE CRITICAL WARNING INFORMATION FOR STEEL–CONFINED RC COLUMNS.
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 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).