High Temperature Piezoelectric Sensing
Piezoelectric sensing is of increasing interest for high temperature applications in aerospace, automotive, power plants and material processing due to its low cost, compact sensor size and simple signal conditioning, in comparison with other high temperature sensing techniques. This paper presented an overview of high temperature piezoelectric sensing techniques. Firstly, different types of high temperature piezoelectric single crystals, electrode materials, and their pros and cons are discussed. Secondly, recent work on high temperature piezoelectric sensors including accelerometer, surface acoustic wave sensor, ultrasound transducer, acoustic emission sensor, gas sensor, and pressure sensor for temperatures up to 1,250 degC were reviewed. Finally, discussions of existing challenges and future work for high temperature piezoelectric sensing are presented.
Sensors