http://hdl.handle.net/20.500.12128/13209
Title: | Distributions of Grain Parameters on the Surface of Aircraft Engine Turbine Blades |
Authors: | Chmiela, Jerzy Słota, Damian Roskosz, Stanisław |
Keywords: | Turbine blades; Grain size |
Issue Date: | 2010 |
Citation: | "Archives of Foundry Engineering" 2010, iss. 4, s. 17-22 |
Abstract: | In the quality assurance system for components cast using the lost wax method, the object of evaluation is the grain size on the surface of the casting. This paper describes a new method for evaluating the primary grain parameters on the surface of aircraft engine turbine blades. Effectiveness of the method has been tested on two macrostructures distinguished by a high degree of diversity in the grain size. The grounds for evaluating the grain parameters consist of geometric measurement of the turbine blade using a laser profilometer and of approximation of the measurement results using a polynomial of a proper degree. The so obtained analytical non-planar surface serves as a reference point for an assessment of the parameters of grains observed on the real blade surface of a variable curvature. The aspects subjected to evaluation included: the grain areas, shape and elongation coefficients of grains on a non-planar surface of the blade airfoil, using measurements taken on a perpendicular projection by means of a stereoscopic microscope and image analysis methods, and by making calculations using the Mathematica® package. |
URI: | http://hdl.handle.net/20.500.12128/13209 |
ISSN: | 2299-2944 1897-3310 |
Appears in Collections: | Artykuły (WNŚiT) |
File | Description | Size | Format | |
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Chmiel_Distributions_of_grain_parameters_on_the_surface_of.pdf | 744,6 kB | Adobe PDF | View/Open |
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