System and method for detecting structural damage
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    发明申请
    System and method for detecting structural damage 审中-公开
    检测结构损伤的系统和方法

    公开(公告)号:US20050072234A1

    公开(公告)日:2005-04-07

    申请号:US10849571

    申请日:2004-05-20

    摘要: A system and method for detecting structural damage is provided that utilizes a general order perturbation methodology involving multiple perturbation parameters. The perturbation methodology is used iteratively in conjunction with an optimization method to identify the stiffness parameters of structures using natural frequencies and/or mode shape information. The stiffness parameters are then used to determine the location and extent of damage in a structure. A novel stochastic model is developed to model the random impact series produced manually or to generate a random impact series in a random impact device. The random impact series method or the random impact device can be used to excite a structure and generate vibration information used to obtain the stiffness parameters of the structure. The method or the device can also just be used for modal testing purposes. The random impact device is a high energy, random, and high signal-to-noise ratio system.

    摘要翻译: 提供了一种用于检测结构损伤的系统和方法,其利用涉及多个扰动参数的一般阶微扰方法。 扰动方法结合优化方法迭代地使用,以使用固有频率和/或模态形状信息来识别结构的刚度参数。 然后使用刚度参数来确定结构中的损伤的位置和程度。 开发了一种新颖的随机模型来模拟手动产生的随机冲击系列或在随机冲击装置中产生随机冲击系列。 随机冲击系列方法或随机冲击装置可用于激发结构并产生用于获得结构的刚度参数的振动信息。 方法或设备也可以用于模态测试目的。 随机冲击装置是高能量,随机和高信噪比系统。