A MECHANICAL SPECTROMETER FOR BIOLOGICAL MATERIALS

本研究将开发一台通用机械试验机 (机械光谱仪)用于生物材料。这 基于微处理器的机器也将执行“标准”材料测试 作为这些测试的组合，通过调用不同的软件程序。 使用带有软件控制的微处理器也将导致 相对简单的机器，可以以相对较低的价格生产和销售 与基于硬件控制的设备相比，价格更低。在 建议一期工作我们将设计一台材料试验机样机 执行恒定应变率、蠕变(载荷阶跃变化)、应力 松弛(位移的阶跃变化)和振荡测试 力和位移控制模式以及在压缩、张力或 扭转模式。拟议的文书将在这两个方面都适用 基础研究和商业测试。机械力学性能试验 在许多情况下，发挥作用的生物组织与更重要的 传统的评估程序(组织学、生化分析) 确定组织的状态和功能能力。然而，研究人员 经常偏离他们调查的主要目标，因为 为自己开发一台适合自己需要的测试机。一种商业上可用的 适合于生物测试的设备，将消除这些昂贵的、 多余的任务。这也将有相当大的应用 商业聚合物研发中的仪器。

This research will develop a general purpose mechanical testing machine (Mechanical Spectrometer) for biological materials. This microprocessor-based machine will perform "standard" material tests as well as combinations of these tests, by calling different software programs. Using a microprocessor with software control will also result in a relatively simple machine which can be produced and sold at a relatively low price, when compared to devices based on hardware control. In the proposed phase I work we will design a prototype materials testing machine to perform constant strain rate, creep (step change in load), stress relaxation (step change in displacement) and oscillatory tests in both force and displacement control modes and in compression, tension or torsional modes. The proposed instrument will have application in both basic research and commercial testing. Mechanical tests of mechanically functioning biological tissues are, in many cases, as important as more traditional evaluation procedures (histology, biochemical analysis) in determining the state and functional ability of a tissue. Yet researchers are often diverted from the primary goals of their investigation by having to develop a testing machine for their own needs. A commercially available device, suited for biological testing, would eliminate these expensive, redundant tasks. There will also be considerable application for this instrument in commercial polymer research and development.