SBIR Phase II: An Innovative Composite Support for Machinery Noise Isolation

*9402898罗森。这个小型企业创新研究第二阶段项目将开发和演示一种用于隔音和振动控制的创新轻质减振处理。这项研究将集中在一种创新的复合材料刚度梯度减振概念上，该概念有可能显著改善传统的约束层减振处理的性能。工业环境中噪声污染的主要来源包括振动在100赫兹的旋转高速机械、电机、发动机和变速箱。至10千赫。频率范围。这种高水平的噪音是导致操作员疲劳和不适的一个因素。这项研究旨在充分定义受控约束层性能变化与结构减振性能之间的相互作用。这一理解将被用来根据结构要求和制造考虑因素来优化减振性能，以便在高噪声环境下应用于燃气轮机变速箱悬置。在完成这些优化研究后，将制造并测试样件，以验证减振性能并展示典型运行下的结构可靠性。***

*** 9402898 Rosen . This Small Business Innovation Research Phase II project will develop and demonstrate an innovative light-weight damping treatment for noise isolation and vibration control. The research will focus on an innovative composite stiffness gradient damping concept which has the potential for a significant performance improvement over conventional constrained layer damping treatments. Major sources of noise contamination in industrial environments include rotating high speed machinery, motors, engines and gearboxes with vibrations in the 100Hz. to 10 Khz. frequency range. This high-level noise is a contributory factor in operator fatigue and discomfort. The research is designed to fully define the interactions between controlled constraining layer property variations and the damping performance of the structure. This understanding will be used to optimize the damping performance against structural requirements and manufacturing considerations for application in the high noise environment of a gas turbine engine gearbox mount. On completion of these optimization studies, a demonstration article will be manufactured and tested to validate the damping performance and demonstrate structural reliability under typical operation. ***