公开(公告)号：US4542639A

公开(公告)日：1985-09-24

申请号：US596154

申请日：1984-04-02

申请人： Peter Cawley ,  Robert D. Adams

发明人： Peter Cawley ,  Robert D. Adams

IPC分类号： G01N3/00 ,  G01N3/30 ,  G01M7/00 ,  G01N29/04

CPC分类号： G01N3/30 ,  G01N2203/0039 ,  G01N2203/005

摘要： Apparatus and method for testing structures by impact. The structure is struck by an impactor associated with a force transducer the output of which is related to the force which the transducer experiences on impact and encompasses a frequency range including the lowest frequencies (typically approaching zero frequency, see FIG. 3) which that force contains to any substantial degree. A test spectrum of the force including that full range of frequencies is produced by a Fourier transformer in a form suitable for automatic comparison, and is then so compared with a reference spectrum typical of impact with a reference structure, and a signal is produced indicating fit or lack of fit between the test and reference spectra.

摘要翻译： 冲击测试结构的装置和方法。 该结构受到与力传感器相关联的冲击器的撞击，该力传感器的输出与传感器在冲击下经受的力相关，并且包括包括最大频率（通常接近零频率，参见图3）的频率范围， 包含任何实质的程度。 包括全范围频率的力的测试频谱由适用于自动比较的形式由傅里叶变换器产生，然后与参考结构的冲击典型参考频谱进行比较，并产生指示拟合的信号 或测试参考光谱之间的拟合不足。