In Situ Form Metrology in Manufacturing by Combining Engineered Optical Scattering and Photogrammetry

该奖项的研究目标是应用摄影测量和遥感学科的测绘科学，以实现制造工程中廉价，非接触，远程和适用于现场测量的新尺寸测量能力。 该方法是使用激光束或由衍射光学元件产生的光束图案，并从正在制造的部件本身或从放置在制造环境中的工程结构散射该光束。 摄影测量将用于确定环境中反射点的绝对坐标，并将此信息映射回所需的尺寸信息。 利用摄影测量技术测量零件的光散射，有效地将零件测量从零件中移走，如果成功，将开辟计量学研究的新领域。成功将意味着在两个重要的制造应用中展示尺寸测量的不确定度为十万分之一，代表了重大的技术和经济进步：（1）自由形式金刚石加工表面的机器计量和（2）用于高精度光学抛光的大型连续抛光平台的原位和动态计量。 这项研究需要在光学，精密计量和机械工程的研究生教育经验。 将利用测量的明显吸引人的特点，并为学生和公众开发学习工具。 这将包括本科生和研究生高级光学实验室课程的模块，供光学和工程学会当地学生分会使用的普通公众演示模块，以及在专业学会会议的广告和招聘摊位上使用的模块。

The research objective of this award is to apply mapping sciences from the disciplines of photogrammetry and remote sensing to realize a new dimensional measurement capability in manufacturing engineering that is inexpensive, non-contact, remote, and applicable to in situ measurements. The approach is to use a laser beam or a beam pattern generated with a diffractive optical element and scatter this beam(s) either from the part being manufactured itself, or from engineered structures placed into the manufacturing environment. Photogrammetry will be used to determine absolute coordinates of reflected spots in the environment and this information will be mapped back to the desired dimensional information. Effectively, the part measurement is moved out away from the part by using photogrammetry to measure the optical scattering from the part.If successful, this method will open a new field of metrology research. Success will mean demonstrating dimensional measurements with uncertainty of 1 part in 100,000 in two important manufacturing applications, representing a significant technical and economic advance: (1) on machine metrology of free-form diamond machined surfaces and (2) in situ and dynamic metrology of large continuous polishing platens used for high precision optic polishing. The research necessitates graduate education experience in optics, precision metrology, and mechanical engineering. The visibly appealing features of the measurement will be exploited and learning tools developed for both students and the general public. This will include modules for undergraduate and graduate advanced optics lab courses, a demo module for the general public for use by local student chapters in optics and engineering societies, and a module for use at advertisement and recruitment booths at professional society meetings.