Design, Fabrication and Testing of a High-Sensitive Fibre Sensor for Tip Clearance Measurements

被引：16

作者：

Durana, Gaizka ^{[1
]}

Amorebieta, Josu ^{[1
]}

Fernandez, Ruben ^{[1
]}

Beloki, Josu ^{[2
]}

Arrospide, Eneko ^{[3
]}

Garcia, Iker ^{[1
]}

Zubia, Joseba ^{[1
]}

机构：

[1] Univ Basque Country, UPV EHU, Commun Engn Dept, Ingn Torres Quevedo Plaza 1, E-48013 Bilbao, Spain

[2] Bizkaia Technol Pk, Aeronaut Technol Ctr, E-48170 Zamudio, Spain

[3] Univ Basque Country, UPV EHU, Appl Math Dept, Ingn Torres Quevedo Plaza 1, E-48013 Bilbao, Spain

来源：

SENSORS | 2018年 / 18卷 / 08期

关键词：

tip clearance; optical fibre sensor; aircraft turbine; DISPLACEMENT SENSOR; BUNDLE; PROBE; TURBOMACHINERY; RIG;

D O I：

10.3390/s18082610

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A highly sensitive fibre bundle-based reflective optical sensor has been designed and fabricated for Tip Clearance measurements in a turbine rig. The sensor offers high spatial and temporal resolution. The sensor probe consists of a single-mode transmitting fibre and two concentric rings of receiving multimode fibres that collect reflected light in a differential detection gain configuration, yielding a highly linear calibration curve for distance measurements. The clearance measurement range is approximately 2 mm around the central point fixed at 3.2 mm from the probe tip, and the sensitivity of the probe is 61.73 mm(-1). The fibre bundle has been designed to ensure that the distance security specifications required for the experimental program of the turbine are met. The optical sensor has operated under demanding conditions set by the blade and casing design. The experimental results obtained so far are promising and lead us to think that the optical sensor has great potential for online clearance measurements with high precision.

引用

页数：13

共 33 条

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