MRI: Acquisition of an Ultra High Speed Camera and a 3D Surface Profiler for Studies in Metal Cutting

这项重大研究仪器（MRI）奖为购买超高速相机提供资金，该相机能够以每秒2亿帧的帧率记录16幅1280 x1024分辨率的数字图像。 该相机将用于研究金属切削中的材料变形和切屑-刀具界面摩擦。 超高的成帧速率将使目前在低速正交切削中确定主剪切区和次剪切区中的速度、应变和应变率分布的能力扩展到高得多的切削速度。 结果将被用来确定在高应变，应变速率和温度下的材料本构特性，获得沿沿着切屑-刀具界面的剪切应力，并验证在高切削速度下的金属切削的计算模型。 该相机还将用于制造过程中的第二个课程的实验。

This Major Research Instrumentation (MRI) award provides funds for the acquisition of an ultra high speed camera capable of recording 16 digital images of 1280x1024 resolution at frame rates up to 200 million frames per second. The camera will be used to study material deformation and chip-tool interface friction in metal cutting. The ultra high framing rate will enable extension of current capabilities for determination of the velocity, strain and strain rate distribution in the primary and secondary shear zones in low speed orthogonal cutting to much higher cutting speeds. Results will be used to determine material constitutive properties at high strain, strain rate and temperature, obtain the shear stress along the chip-tool interface, and verify computational models of metal cutting at high cutting speeds. The camera will also be used in experiments in a second course in manufacturing processes.