Research On The Wear Analysis And Measurement Based On MATLAB

Wear is one of the three basic contents of Tribology, in modern industrial societies, there are signs of wear either in light or heavy industry, and losses which were caused by wear is enormous, so study part of the wear pattern and development method of abrasion test for improving component life and reliability is extremely important. This paper introduced traditional and existing measurement methods, take ring wear which was produced by pin-on-disk wear testing machine as example, we introduced two methods of measuring wear width, one is painting line measurement method, the other one is projection measurement method. And we have done more continue expand researches about projection measurement method, the research achievements are mainly as follows:(1) Firstly, we introduced the research at home and abroad about wear measurement, summarized traditional and existing of measurement methods, and described in detail the advantages and disadvantages of each method.(2) We designed a set of preprocessing method before using the projection measurement method. First, we accomplished color image gray processing, then, we used different threshold methods process the gray image, and compared the results to choose the best threshold methods, finally we chose Otsu threshold methods to obtain the binary image. The segmentation was completed by morphology operations and we got the image that highlighted the wear region, Final projection method is used to measure the wear width, compared to scale method, projection method are more accurate without human intervention.(3) Using both measuring methods, projection method and visual analogue scale, projection measuring process more complicated than visual analogue scale, but to irregular shape wear, projection method is better than the visual analogue scale and projection method are more accurate. Based on MATLAB GUI pack a wear scar measurement software, including files, images, grayscale, threshold segmentation, mathematical morphology, wear scar width measurement and wear scar measurement of area of six modules, the software is able to realize rapid measurement of wear scar width and area. We built wear analysis and measuring software based on the MATLAB GUI, the software including files, gray processing, threshold segmentation, mathematical morphology, Wear width and area measurement, this software can realize the wear width and area rapid measurement.(4) Projection measurement method is proposed in this paper can not only be applied to measure the wear width but also be applied to the field of tribology in the plating layer thickness determination. Despite the limited laboratory conditions, Nano-plating layer thickness is hard to determine, the projection method would be a good choice, and projection method has higher accuracy.