کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
735223 893584 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
New approach to the inspection of cooling holes in aero-engines
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
New approach to the inspection of cooling holes in aero-engines
چکیده انگلیسی

This paper explores a new design for inspecting turbine blade cooling holes. Cooling holes have been incorporated in the design of turbine blades to combat and avert blade failure caused by excessive operating temperatures. In the paper, we examine the inspection techniques currently in use and present a novel optical technique as an alternative. Our design consists of two stages of inspection, each optically based. In the first stage, a sample is mounted on an XY micro-positioning stage, a vision system captures an image of the sample and displays the size and shape of each entrance hole. To measure the presence of a bottom, a second XYZ inspection stage is used. Using a small collimating tube, a micro-beam illuminates a drilled hole in a pre-programmed fashion. Depending on the level of reflected intensity and where it occurs, the presence of a hole's bottom is determined. The optical inspection system consists of a laser, motorized micro-positioning stages, collimating tubes, vision system, data acquisition software and a customized fixture for manipulating the samples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics and Lasers in Engineering - Volume 47, Issue 6, June 2009, Pages 686–694
نویسندگان
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