High temperature measurement on static and rotating machinery
Lead Research Organisation:
University of Southampton
Department Name: Sch of Electronics and Computer Sci
Abstract
Temperature provides a critical piece of information about machine health condition. The objective of this project is to design a transducer that can sense temperatures in high temperature environments (>1000C). Techniques for measuring temperature include wire thermocouples, ultrasonic waves, and thin film thermocouples. Ultrasonic wave measurement operates on the principle that a wave's speed changes due to the material properties, which are in turn affected by temperature. Ultrasonic surface waves involve exciting the structure with high frequency wave (>100KHz), and measuring the time of flight. The main challenges for measuring at high temperature are: (1) low signal to noise ratio, (2) the propagation loss of the transmitted signal, and (3) the transducer nonlinearity and sensor accuracy and reliability.
In order to detect a degree change in temperature using the proposed guided wave mechanism, a very high sampling rate (GHz) is required to detect the reflected wave. With the recent advent of improved high-temperature electronics, and transducers in particular, it is now possible to detect guided waves in the GHz frequency range. Such a frequency is required to match the one-degree-level resolution delivered by existing thermocouple solutions, while improving the reliability and maintainability of the temperature sensing system as a whole.
The proposed project is aligned with ECS strategies and covers the sensing part of C-IoT.
In order to detect a degree change in temperature using the proposed guided wave mechanism, a very high sampling rate (GHz) is required to detect the reflected wave. With the recent advent of improved high-temperature electronics, and transducers in particular, it is now possible to detect guided waves in the GHz frequency range. Such a frequency is required to match the one-degree-level resolution delivered by existing thermocouple solutions, while improving the reliability and maintainability of the temperature sensing system as a whole.
The proposed project is aligned with ECS strategies and covers the sensing part of C-IoT.
Organisations
People |
ORCID iD |
Nick Harris (Primary Supervisor) | |
Lawrence Yule (Student) |
Studentship Projects
Project Reference | Relationship | Related To | Start | End | Student Name |
---|---|---|---|---|---|
EP/N509747/1 | 01/10/2016 | 30/09/2021 | |||
2280858 | Studentship | EP/N509747/1 | 01/10/2019 | 30/09/2022 | Lawrence Yule |
EP/R513325/1 | 01/10/2018 | 30/09/2023 | |||
2280858 | Studentship | EP/R513325/1 | 01/10/2019 | 30/09/2022 | Lawrence Yule |