Damage Identification by Embedded Piezoceramic Sensors in the Composite Plate

Heoung Jae Chun; Choong Hee Yi; Joon Hyung Byun

doi:10.4028/www.scientific.net/KEM.326-328.1697

Paper Titles

FEA-Based Design and Fabrication of Functionally Graded Materials
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Experimental Investigation on 2D and 3D Braided C/SiC Composites
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Effect of Air-Coupled/Conventional Ultrasound Waves on Resin-Infiltrated Time of Wood Natural Materials
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Detection of Impact Damage in Composite Plates Using Surface Contact Method
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Damage Identification by Embedded Piezoceramic Sensors in the Composite Plate
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Bending Characteristics of Plate-Type Piezoelectric Composite Actuators According to Applied Electric Fields and Drive Frequencies
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Development of FRP-Concrete Composite Bridge Deck in Korea - State-of-the-Art Review -
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Experimental Studies on Mechanical Properties of Rock Joints under Dynamic Loading
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Measuring Elastic Properties of Circular Tube Made with Thermoplastic Composites
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Damage Identification by Embedded Piezoceramic Sensors in the Composite Plate

Abstract:

The embedded structural health monitoring system is envisioned to be an important factor of future structural systems. One of the many attractions of in situ health monitoring system is its capability to inspect the structural systems in less intrusive way over many other visual inspections which require disassembly of built up structures when some indications have appeared that damages have occurred in the structural systems The vacuum assisted resin transfer molding (VARTM) process is used to fabricate woven-glass/phenol composite specimens which have the PZT sensor array embedded in them. The embedded piezoceramic (PZT) sensors are used as both transmitters and receivers. A damage identification approach is developed for a woven-glass/phenol composite laminates with known localized defects. Propagation of the Lamb waves in laminates and their interactions with the defects are examined. Lamb waves are generated by the high power ultrasonic analyzer. A real time active diagnosis system is therefore established. The results obtained show that satisfactory detection accuracy could be achieved by proposed method.