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展示一种创新的轻质阻尼处理，用于噪音隔离和振动控制。 该研究将集中在一个创新的复合刚度梯度阻尼概念，具有显着的性能改善传统的约束层阻尼处理的潜力。 工业环境中的主要噪声污染源包括旋转的高速机械、电机、发动机和齿轮箱，振动频率为100 Hz。10 khz。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。 该研究旨在充分定义受控约束层属性变化与结构阻尼性能之间的相互作用。 这种理解将用于优化阻尼性能，以满足燃气涡轮机发动机齿轮箱安装件在高噪声环境中应用的结构要求和制造考虑。在完成这些优化研究后，将制造和测试一个示范项目，以验证阻尼性能，并证明在典型操作下的结构可靠性。 ***

*** 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. ***