Non-Contact Video Extensometer

不列颠哥伦比亚大学(UBC)是世界闻名的生物力学卓越中心。几个UBC学院和部门的研究人员研究生物组织的材料特性，并设计用于工业和医疗应用的新型生物材料。在这项拨款申请中申请的资金是为了获得一台高分辨率非接触式视频延伸仪，这将使研究人员能够在实验材料和生物合成材料的拉伸测试过程中安全和准确地测量应变(即拉伸)。提出的非接触式视频引伸仪使用高分辨率数码相机和实时图像处理，通过跟踪试件上的两个点标记来精确计算应变(分辨率为3微米)。这种方法将改进高度可变厚度和成分(例如藻类、木质茎、碳纤维、动脉壁)的生物测试样本的应变测量。这种非接触式视频延伸仪将是对UBC生物力学设施的最先进补充，大大提高了校园内生物力学研究人员的实验广度和能力。该延伸仪将加强和促进研究人员之间现有的协同互动和跨学科合作，因为这项应用得到了UBC五个不同系(植物学、动物学、林业、化学、材料工程)的六个研究人员(马托内、戈斯林、沙德威克、曼斯菲尔德、李、科)的支持。

The University of British Columbia (UBC) is a world-renowned centre for biomechanics excellence. Researchers in several UBC faculties and departments investigate material properties of biological tissues and engineer novel biomaterials for industrial and medical applications. The funding requested in this grant application is to acquire a high resolution Non-Contact Video Extensometer, which will allow researchers to safely and accurately measure strain (i.e., stretch) during tensile testing of experimental and biosynthesized materials. The proposed non-contact video extensometer uses a high-resolution digital camera and real-time image processing to precisely calculate strain (3 µm resolution) by tracking two point marks on the test specimens. This methodology will improve strain measurements of biological test specimens with highly variable thickness and composition (e.g., algae, woody stems, carbon fibres, artery wall). The non-contact video extensometer will be a state-of-the-art addition to the biomechanics facilities at UBC, significantly advancing the experimental breadth and capabilities of biomechanics researchers across campus. The extensometer will enhance existing and foster new synergistic interactions and interdisciplinary collaborations among researchers, as this application is supported by six research faculty (Martone, Gosline, Shadwick, Mansfield, Li, Ko) in five different departments at UBC (Botany, Zoology, Forestry, Chemistry, Materials Engineering).