Ultrasonic temperature measurements with fiber optic system
Abstract
Ultrasonic temperature measurements have been developed and widely applied in non-contact temperature tests in many industries. However, using optical fibers to build ultrasound generators are novel. This paper reports this new fiber optic ultrasonic system based on the generator of gold nanoparticles/polydimethylsiloxane (PDMS) composites. The optical acoustic system was designed to test the change of temperature on the aluminum plate and the temperature of the torch in the air. This paper explores the relationship between the ultrasonic transmission and the change of temperature. From the experimental results, the trend of ultrasonic speed was different in the aluminum plate and air with the change of temperature. Since the system can measure the average temperature of the transmission path, it will have significant influence on simulating the temperature distribution.
- Publication:
-
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016
- Pub Date:
- April 2016
- DOI:
- 10.1117/12.2219288
- Bibcode:
- 2016SPIE.9803E..1YB