Temperature and displacement measurement system with fiber optic sensors for turbine blades

Yutian Wang; Yongjing Zhu

doi:10.1117/12.716531

13 October 2006 Temperature and displacement measurement system with fiber optic sensors for turbine blades

Yutian Wang, Yongjing Zhu

Proceedings Volume 6280, Third International Symposium on Precision Mechanical Measurements; 62801G (2006) https://doi.org/10.1117/12.716531
Event: Third International Symposium on Precision Mechanical Measurements, 2006, Urumqi, China

Abstract

In this paper, a novel technique is presented to measure temperature and axial displacement of turbine blades simultaneously with a single sensor probe, by using non-contact measurement method. The heat radiation property of high temperature objects and the principle of optical fiber transducers in pyrometry are described. Based on the basic principle of colorimetric measurement, a fiber-optic temperature sensor is selected, in view of its high measurement accuracy and practicability, which is suitable for hostile environments. For dynamic external surface measurement, a new reflective intensity-modulated displacement sensor with a simple and reliable structure is proposed. In this project, the main elements for the sensor, circuit system and single chip ADuC848 are discussed. Especially, a concentric multi-circle fiber bundle is used in the sensor probe, which is designed on the basis of the required temperature measurement range and displacement measurement range.

Citation Download Citation

Yutian Wang and Yongjing Zhu "Temperature and displacement measurement system with fiber optic sensors for turbine blades", Proc. SPIE 6280, Third International Symposium on Precision Mechanical Measurements, 62801G (13 October 2006); https://doi.org/10.1117/12.716531

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