Multibeam Healing for Laser Micromachining in Manufacturing

制造业激光微加工的多光束修复

基本信息

批准号：
7224868
负责人：
BIPIN SINGH
金额：
$ 9.95万
依托单位：
RADIATION MONITORING DEVICES, INC.
依托单位国家：
美国
项目类别：
财政年份：
2006
资助国家：
美国
起止时间：
2006-05-01 至 2008-04-30
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/7224868
关键词：
Ablation Address Aluminum Oxide Area Automation Biological Process Biomedical Engineering California Ceramics Characteristics Cherry - dietary Collaborations Consultations Count Data Defect Depth Development Diamond Discipline of Nuclear Medicine Drops Economics Elements Emission-Computed Tomography Engineering Fracture Frequencies Funding Future Gadolinium Generations Goals Healed Heating Image Implant Individual Inferior Investigation LSO crystal Laboratories Lasers Localized Lutetium Measures Mechanics Medical Medical Imaging Medical Technology Methods Modality Modeling Nature Numbers Optics Orthopedics Outcome Pattern Pennsylvania Performance Phase Photons Physiologic pulse Positioning Attribute Positron-Emission Tomography Principal Investigator Probability Process Production Prohibit Property Pulse taking Purpose Range Rate Relative (related person)Reliability of Results Reporting Research Research Personnel Resolution Science Score Shapes Side Solutions Standards of Weights and Measures Stress Structure Surface System Techniques Testing Thick Time Universities Update Width Work X-Ray Computed Tomography authority cost density design detector experience feeding gadolinium oxyorthosilicate healing image reconstruction improved interest manufacturing process melting microsystems millimeter professor research study size thermal stress

项目摘要

DESCRIPTION (provided by applicant): There is a considerable interest in using laser-manufacturing methods for medical applications due to their potential to reduce cost. In fact, the precision and low-force signature of lasers makes them very attractive alternatives to traditional machining methods for brittle materials such as lutetium oxyorthosilicate (LSO) and gadolinium oxyorthosilciate (GSO) used in high-resolution medical imaging. However, material damage, especially micro-scale cracking, during laser machining is a frequently encountered problem that results in added costs, needless scrap, and reduced performance/reliability. We propose to demonstrate the feasibility of developing a multibeam laser healing technique to eliminate micro-cracks formed during laser machining of brittle materials like scintillators. We will use a simultaneous multibeam approach for micromachining and defect healing to improve the strength/reliability during laser manufacturing. Experimental investigations will be supported by finite-element modeling of the process including the calculation of damage inducing thermal-stresses. The proposed research on laser healing will significantly improve both yield and reliability during laser machining, resulting in an order of magnitude reduction in cost. Additionally, the reduced inter-pixel gaps resulting from the laser pixelation technique will significantly improve detector performance. Therefore, the proposed research has great commercial relevance, especially for high-resolution medical imaging applications.

描述（由申请人提供）：由于激光制造方法具有降低成本的潜力，因此人们对将激光制造方法用于医疗应用产生了很大的兴趣。事实上，激光的精确性和低力特征使其成为脆性材料（例如用于高分辨率医学成像的氧原硅酸镥 (LSO) 和氧原硅酸钆 (GSO)）的传统加工方法的非常有吸引力的替代方案。然而，激光加工过程中的材料损坏，尤其是微尺度裂纹是经常遇到的问题，会导致成本增加、不必要的报废以及性能/可靠性降低。我们建议证明开发多束激光修复技术的可行性，以消除闪烁体等脆性材料激光加工过程中形成的微裂纹。我们将使用同步多光束方法进行微加工和缺陷修复，以提高激光制造过程中的强度/可靠性。实验研究将得到过程的有限元建模的支持，包括引起热应力的损伤的计算。拟议的激光修复研究将显着提高激光加工过程中的产量和可靠性，从而使成本降低一个数量级。此外，激光像素化技术减少的像素间间隙将显着提高探测器的性能。因此，所提出的研究具有很大的商业意义，特别是对于高分辨率医学成像应用。