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On the development of airfoil section inspection and analysis technique

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Abstract

In blade inspection, the measurement and analysis of airfoil section parameters and geometric tolerance are very important but complicated. The aim of this study was to apply coordinate measurement techniques to blade sections measurement and to develop methods for the evaluation of dimensions and geometric tolerance. Due to significant variation in the blade shape, especially near the upper sections, the leading edge and the trailing edge, the measurement paths based on the CAD model may lead to incorrect results. Thus, a two-step measurement procedure, including a rough measurement and a fine measurement, along with the calculation of the back-off directions was proposed to improve the measurement accuracy. In blade profiles analysis, several algorithms, including a best-fit algorithm, blade parameters computation and profile and tolerance zone analysis, were used to evaluate section parameters and geometric tolerance. Successful experimental results have demonstrated the feasibility of the proposed method.

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Authors and Affiliations

  1. Department of Mechanical Engineering, National Central University, Taoyuan, Jung-li City, 320, Taiwan, Republic of China

    Tao-Hsien Hsu & Jiing-Yih Lai

  2. Mechanical Engineering Department, Tung Nan Junior College of Technology, Taiwan, People's Republic of China

    Wen-Der Ueng

Authors
  1. Tao-Hsien Hsu
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  2. Jiing-Yih Lai
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  3. Wen-Der Ueng
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Correspondence to Jiing-Yih Lai.

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Hsu, TH., Lai, JY. & Ueng, WD. On the development of airfoil section inspection and analysis technique. Int J Adv Manuf Technol 30, 129–140 (2006). https://doi.org/10.1007/s00170-005-0046-5

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  • DOI: https://doi.org/10.1007/s00170-005-0046-5

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