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《Acta Armamentarii》 2007-02
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Grindability Evaluation of Ceramics via Grey Clustering Approach

YU Ai-bing1,2,WANG Min2,TIAN Xin-li3(1.Faculty of Engineering,Ningbo University,Ningbo 315211,Zhejiang,China;2.The State Education Ministry Key Laboratory of Advanced Ceramics and Machining Technology,Tianjin University,Tianjin 300072,China;3.Institute of Armored Force,Beijing 100072,China)  
A comprehensive evaluation method for ceramic grindability was proposed.More influencing factors of ceramic grindability can be considered simultaneously.Ceramics to be evaluated were selected as clustering objects,influencing factors of ceramic grindability were selected as clustering items.Grindabilities of ceramics were classified as different grey degrees.Grey whitenization functions of influencing factors for ceramic grindability were determined.Fixed weight clustering coefficients were calculated with deviation matrix method.Clustering vectors for ceramics were calculated.Finally,grindabilities of ceramics were classified according to comparison of clustering coefficients.Silicon carbide,alumina,zirconia and silicon nitride were evaluated as the examples.The property parameters and machining process/output parameters were considered together.Four ceramics were classified as three grindability grades.The research results show that grey fixed weight clustering approach is a reasonable method for grindability evaluation of ceramics.
【Fund】: 国家自然科学基金资助项目(50305023)
【CateGory Index】: TQ174
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