MRI: Development of an Ultra High Speed Camera Capable of Simultaneous Full-Field Deformation and Temperature Measurements

这一重大研究仪器(MRI)奖提供资金，用于开发一种新型超高速相机，用于同时进行全场形变和温度测量。该相机将通过增加两个商用的双帧图像增强型相机和两个高功率脉冲激光器来开发，这种新型模块化超高速非增强型相机系统是通过先前的重大研究仪器拨款开发的。这将允许使用两波激光诱导荧光技术进行超高速全场温度测量，同时进行基于数字图像相关的变形测量。该系统将用于实验量化金属切割中主要和次要剪切带中的平均应变率和温度场，并研究在一系列商业切割条件下这些场的动态。这一重大研究仪器奖将增加堪萨斯州第一台也是唯一一台超高速相机的能力，它的可用将加强该州的研究和教育基础设施。该设备可用于任何需要高分辨率超高帧速率热像仪图像的领域，或同时需要形变和温度帧的场合。这一概念目前正在申请专利，预计这种仪器将作为商业产品上市，并由研究人员在各种不同领域使用。更广泛的影响可能还包括更好地了解金属切割中的温度场的好处，这对工具磨损和产品质量至关重要，以及创建和传播可用于教育的改进的金属切割模型。

This Major Research Instrumentation (MRI) award provides funds to develop a new type of ultra high-speed camera that will be used for simultaneous full-field deformation and temperature measurements. The camera will be developed by adding two commercially available dual-frame image-intensified cameras and two high power pulsed lasers to a new type of modular ultra high speed non-intensified camera system developed through a prior Major Research Instrumentation grant. This will permit ultra high-speed full field temperature measurement using the two-wave Laser Induced Fluorescence technique, simultaneously with Digital Image Correlation based deformation measurement. This system will be used to experimentally quantify the average strain rate and temperature fields in the primary and secondary shear zones in metal cutting, and to study the dynamics of these fields under a range of commercial cutting conditions.This Major Research Instrumentation award will add to the capabilities of the first and only ultra high-speed camera in the state of Kansas and its availability for use will strengthen the research and education infrastructure of the state. This equipment can be used in any field where high-resolution ultra high framing rate thermographic images are needed, or whenever simultaneous deformation and temperature frames are needed. This concept is currently being patented and it is anticipated that this instrument will be marketed as a commercial product and used by researchers in a variety of different areas. The broader impacts potentially also include the benefits of better understanding of the temperature field in metal cutting, which is of prime importance in tool wear and product quality, and the creation and dissemination of improved models of metal cutting that can be used in education.