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Showing 1 to 6 of 6 for “"piezoelectric wafer"”.
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Composite Structural Health Monitoring With Piezoelectric Wafer Active Sensors
… method which utilizes the embeddable low-profile piezoelectric wafer active sensors (PWAS). PWAS utilize the piezoelectric principle to convert electric energy to mechanical energy or mechanical energy back to electrical energy. This type of sensor can be readily mounted on the existing structures …
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Structural Health Monitoring of Adhesively Bonded Joints With Piezoelectric Wafer Active Sensors
… bonded joints using small, unobtrusive piezoelectric wafer active sensors (PWAS) which are permanently affixed on the surface of the structure. PWAS can be placed in restrictive spaces, like in built-up aerospace structures. The surface-bonded PWAS can produce guided waves traveling …
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Power and Energy Transduction In Piezoelectric Wafer Active Sensors For Structural Health Monitoring: Modeling and Applications
… develop the scientific and engineering basis for piezoelectric wafer active sensors (PWAS) in structural health monitoring (SHM). PWAS are studied in both theoretical and practical aspects. The research focuses on three areas: (I) modeling of PWAS power and energy transduction; (II) PWAS …
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Fundamental Studies In the Lamb-Wave Interaction Between Piezoelectric Wafer Active Sensor and Host Structure During Structural Health Monitoring
… in service. Active SHM can be performed through piezoelectric transducers such as piezoelectric wafer active sensors (PWAS) that can be permanently attached to the structure through a bonding layer. PWAS transducers can actively interrogate the structure by exciting and receiving Lamb waves …
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Effects of stress on material properties, intrinsic and extrinsic behavior, and electromechanical response of stress-biased actuators
… actuator based on an elastic metal layer and a piezoelectric wafer bonded together with a thermoplastic material (LaRC-SI). On cooling from the processing temperature, the difference in thermal expansion between layers creates a unique dome structure with high internal stress. Thunder™ actuators …
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Design of an Analog Adaptive Piezoelectric Sensoriactuator
In order for a piezoelectric transducer to be used as a sensor and actuator simultaneously, a direct charge due to the applied voltage must be removed from the total response in order to allow observation of the mechanical response alone. Earlier researchers proposed electronic compensators to …