Suggestion of Image Processing System for Measurement of Coverage

Author:  Handa, Watanabe, Hattori, Toyo Seiko Co., Ltd.
Source:  The Shot Peener magazine, Vol 19 / Issue 3, Summer 2005
Doc ID:  2005032
Year of Publication:  2005
Abstract:  
INTRODUCTION Generally speaking, the management of shot peening would be conducted by arc height intensity, coverage and deformation of part. As standard method of measurement of coverage, it should be required to use the strip that has the same hardness and material of the target. However, usually normal almen strip is used in place of correct specimen for coverage measurement. As standard method of coverage measurement, it is required to calculate by checking the weight rate of piece that was cut from an enlarged photo. Further at simplified method it is requested to decide the coverage by comparing with the standard photo. The former method takes a longer measurement time and the latter is basically depend on the skill. So, in this paper we would suggest new measurement method to avoid above two problem by using mirror polished almen strip and image processing.