Sökning: "piezoelectric transducers"
Visar resultat 1 - 5 av 17 avhandlingar innehållade orden piezoelectric transducers.
1. Active Health Monitoring of Aerospace Composite Structures by Embedded Piezoceramic Transducers
Sammanfattning : The objectives of the thesis work were to study theinteraction between embedded piezoceramic transducers andcomposite structures as well as determine techniques tosimplify the Lamb waves analysis. Firstly, this studyconsidered the design of the embedded piezoceramic transducers. LÄS MER
2. Dynamics of Structures with Thin Piezoelectric Layers
Sammanfattning : The subject of this thesis is dynamics of structures with thin piezoelectric layers. Piezoelectric materials are used in sensor and actuators and common applications for these are vibration damping, ultrasonic transducers, buzzards and more. LÄS MER
3. Dynamics of Plates with Thin Piezoelectric Layers
Sammanfattning : The subject of this thesis is dynamics of plates with thin piezoelectric layers. Piezoelectric materials are often used in sensors and actuators and common applications for these are vibration control and ultrasonic transducers. LÄS MER
4. On-chip electrochemical capacitors and piezoelectric energy harvesters for self-powering sensor nodes
Sammanfattning : On-chip sensing and communications in the Internet of things platform have benefited from the miniaturization of faster and low power complementary-metal-oxide semiconductor (CMOS) microelectronics. Micro-electromechanical systems technology (MEMS) and development of novel nanomaterials have further improved the performance of sensors and transducers while also demonstrating reduction in size and power consumption. LÄS MER
5. Gap discharge transducers applied to ultrasonic flow measurement
Sammanfattning : In this thesis, the potential of the gap discharge transducer is investigated as both a sound pulse emitter and a sound pulse receiver in a gas flow measurement setup. The main objective is to use the gap discharge transducer as an integral part in a gas flow measurement system developed for harsh environments. LÄS MER