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This paper develops and validates a technique for real-time measurement of crack tip opening load using ultrasonic sensors and its application to life-extending control of mechanical structures. To experimentally validate the proposed measurement technique, fatigue tests have been conducted in the laboratory environment on center-notched 7075-T6 aluminium alloy specimens. The energy of reflected ultrasonic...
This paper presents real-time detection of fatigue damage in mechanical structures using ultrasonic sensing methodology. The data-driven pattern identification method for anomaly detection is based on the tools derived from statistical mechanics and symbolic dynamics. The concept of escort distributions has been used to identify the behavioral patterns changes in complex systems due to gradual evolution...
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