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Invention Application
WO2010003512A1 AN APPARATUS AND A METHOD OF MEASURING EROSION OF AN EDGE OF A TURBOMACHINE AEROFOIL 审中-公开
一种装置和一种测量涡轮机AEROFOIL边缘腐蚀的方法

AN APPARATUS AND A METHOD OF MEASURING EROSION OF AN EDGE OF A TURBOMACHINE AEROFOIL
Abstract:
An apparatus (40) for measuring erosion of an edge (32) of an aerofoil portion (30) of a fan blade (26) comprises a laser source (42) to direct light at a position on the edge (32) of the fan blade (26). A detector (44) detects light reflected from the position on the edge (32) of the fan blade (26). A computer (480 measures the distance from the laser source (42) to points on the edge (32) of the fan blade (26) to produce a profile of the edge (32) in terms of x and z coordinates. The computer (48) calculates the radial distances of points on the edge (32) of the fan blade (26) from a centroid of the profile. The computer (48) detects local peaks (P) in the distance of points from the centroid of the profile. The computer (48) selects two local peaks (P1, P2) with the greatest distance there between. The computer (48) determines the distance (D1) between the two local peaks (P1, P2) and compares the determined distance (D1) and a predetermined distance to determine if there is unacceptable erosion.
Abstract(Chinese):

用于测量风扇叶片（26）的机翼部分（30）的边缘（32）的侵蚀的装置（40）包括激光源（42），以将光引导到风扇的边缘（32）上的位置 刀片（26）。 检测器（44）检测从风扇叶片（26）的边缘（32）上的位置反射的光。 计算机（480）测量从激光源（42）到风扇叶片（26）的边缘（32）上的点的距离，以便根据x和z坐标产生边缘（32）的轮廓。计算机 计算机（48）根据轮廓的质心计算出风扇叶片（26）的边缘（32）上的点的径向距离，计算机（48）从轮廓的质心点的距离中检测局部峰值（P） 计算机（48）选择距离最远的两个局部峰值（P1，P2），计算机（48）确定两个局部峰值（P1，P2）之间的距离（D1），并将确定的距离（D1 ）和预定距离以确定是否存在不可接受的侵蚀。

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