工具技术
工具技術
공구기술
TOOL ENGINEERING
2009年
7期
40-43
,共4页
粒子图像测速(PIV)%大应变变形%切削加工%流速%应变%应变速率
粒子圖像測速(PIV)%大應變變形%切削加工%流速%應變%應變速率
입자도상측속(PIV)%대응변변형%절삭가공%류속%응변%응변속솔
particle image velocity (PIV)%large strain deformation%cutting machining%flow velocity%strain%strain rate
切削加工可作为研究大应变变形现象和细化金属与合金微观组织的实验手段,其关键技术之一是测量第一变形区和第二变形区(刀-屑接触面)的变形区域特征,如材料的流速、应变、应变率和温度等.粒子图像测速(PIV)是一种基于流场图像互相关分析的二维流场非接触式测试技术.应用PIV技术,可获得第一变形区和刀一屑接触面的高速图像序列,从而得到这些区域材料的流速、应变和应变速率分布.
切削加工可作為研究大應變變形現象和細化金屬與閤金微觀組織的實驗手段,其關鍵技術之一是測量第一變形區和第二變形區(刀-屑接觸麵)的變形區域特徵,如材料的流速、應變、應變率和溫度等.粒子圖像測速(PIV)是一種基于流場圖像互相關分析的二維流場非接觸式測試技術.應用PIV技術,可穫得第一變形區和刀一屑接觸麵的高速圖像序列,從而得到這些區域材料的流速、應變和應變速率分佈.
절삭가공가작위연구대응변변형현상화세화금속여합금미관조직적실험수단,기관건기술지일시측량제일변형구화제이변형구(도-설접촉면)적변형구역특정,여재료적류속、응변、응변솔화온도등.입자도상측속(PIV)시일충기우류장도상호상관분석적이유류장비접촉식측시기술.응용PIV기술,가획득제일변형구화도일설접촉면적고속도상서렬,종이득도저사구역재료적류속、응변화응변속솔분포.
The cutting machining can be taken as an experimental technique for studying phenomena associated with the large strain deformation and refining microstructures of metal and alloy. One of its key technologies is measurement of deformation characteristies in frost deformation zone and second deformation zone (tool-chip interface), such as flow velocity, strain, strain rate, temperature and so on. Particle Image Velocity (PIV) is a two-dimensional flow field non-contact test technology based on interrelated analysis of flow image. The high-speed image sequences of first deformation zone and tool-chip interface can he obtained with PIV, and thus the distributions of velocity and strain rate can he achieved consequently.
