Acquisition of Enhanced Instrumentation for Dynamic Systems Analysis

高度柔顺的（柔性）结构，如膜，由于材料极薄，必须使用非接触的振动传感方法。大型土木或机械结构的全场动力学描述，或恶劣环境中的振动测量，是传统分析方法不足的另一个例子。本提案寻求获得激光测振仪，这是一个多点测量系统，可用于模型分析，设计研究，无损检测和系统识别。该系统采用激光多普勒干涉测量技术对复杂系统进行精确的非接触振动测量，消除了传统振动测试技术的缺点。＊＊＊

9724360 Jenkins Highly compliant (flexible) structures, such as membranes, must use noncontact methods of vibration sensing, due to the extreme thinness of the material. Full-field dynamical descriptions of large civil or mechanical structures, or vibration measurements in hostile environments, are other example where traditional methods of analysis are insufficient. This proposal seeks to acquire a laser vibrometer, which is a multi-point measurement system which can be used for model analysis, design studies, nondestructive testing, and system identification. The system uses laser doppler interferometry to make accurate noncontact vibration measurements on complex systems without the drawbacks of conventional vibration testing techniques. ***