Collaborative Research: Controlling Surface Damage in Machining of Hierarchical Biological Composites

协作研究：控制多级生物复合材料加工中的表面损伤

• 批准号: 1031244
• 负责人: Henry Yang
• 金额: $ 22.09万
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1031244&HistoricalAwards=false
• 关键词: Collaborative; Research; Controlling; Surface; Damage

The research objective of this Collaborative Research award is to develop capabilities for machining structural biological composites such as bone and nacre with minimal surface damage. These biological composites exhibit many levels of hierarchical structures from macroscopic to microscopic length scales, and novel structural mechanical properties. The research approach will utilize novel diagnostic instruments for studying deformation/fracture in biological composites and high-resolution optical techniques for analysis of deformation in machining. Modeling structured around finite element analysis and moving heat source theory will be used to predict the thermomechanical state of the composite surfaces created by cutting. Model predictions will be compared with the experimental observations. By integrating these results, recommendations will be developed for improved cutting procedures that will minimize surface damage in this class of structural bio-materials.If successful, the broader impact of the results will be new cutting methodologies for the bio-inspired structural materials of the future, and improved procedures for surgery that minimize damage to bone and tissue. The results will be of value also in understanding deformation and cutting of complex bio-inspired (structural) materials of the future and soft matter, and for continued development of diagnostic instrumentation for biological composites. Complementing the research is an education and training program that includes development of a bone cutting test-bed for practitioners and interns, student internships, seminar series webcast, and a modest focus on fostering entrepreneurship in graduate study.

该协作研究奖的研究目标是开发能够加工结构生物复合材料，例如骨骼和Nacre，其表面损害最小。这些生物复合材料表现出从宏观到微观长度尺度和新型结构机械性能的许多层次结构。研究方法将利用新型的诊断工具来研究生物复合材料和高分辨率光学技术中的变形/断裂，以分析加工中的变形。围绕有限元分析和移动热源理论构建的建模将用于预测通过切割产生的复合表面的热机械状态。模型预测将与实验观察结果进行比较。通过整合这些结果，将为改进切割程序提出建议，以最大程度地减少这类结构生物材料的表面损害。如果成功，结果的更广泛的影响将是未来生物启发的未来结构材料的新切割方法，并改善了对手术的手术方法，以最大程度地减少对骨骼和组织的损害。结果也将是有价值的，这对于理解未来和软物质的复杂生物启发的（结构）材料以及生物复合材料的诊断仪器的持续开发。补充这项研究的是一项教育和培训计划，其中包括开发用于从业者和实习生的切除测试床，学生实习生，研讨会系列网络广播，以及对培养研究生学习的企业家精神的适度关注。