An Optical Method for Assessing Scratch Damage in Bulk Materials and Coatings
作者单位：Institute for ManufacturingUniversity of CambridgeMill LaneCambridge CB2 1RXUK Department of Materials Science and MetallurgyUniversity of CambridgePembroke StreetCambridge CB2 3QZUK Department of Materials Science and MetallurgyUniversity of CambridgePembroke StreetCambridge CB2 3QZUK
会议名称：《第三届表面工程国际会议》
会议日期：2002年
学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）]
关 键 词：scratch testing surface damage
摘 要：正 For some applications,the most important property of a scratch in a surface or coating is the visual perception of that scratch by a human observer.A method is proposed to predict the visual impact of scratch damage from measurements of geometrical dimensions and changes in greylevel.A logarithmic instrumental visibility,Vi is defined by Vi=log ΔG25dA and is shown to correlate well with visibility,as perceived by human observers,for a wide range of simulated scratch images and also for real scratches in filled polyolefin sheets.