【作者】 王晓； 张朝晖； 蓝金辉； 恩西杜；

【Author】 Wang Xiao Zhang Zhaohui Lan Jinhui En Xidu (School of Information ,University of Science and Technology Beijing ,Beijing 100083,China )

【机构】 北京科技大学信息工程学院；

【摘要】 提出了一种基于振动能量分析的管道袭痕的检测方法,沿管壁径向激振并在轴向平行线上检振,振动波经过裂痕时,高频成分因被空气隙吸收而严重衰减,低频成分靠衍射透过裂痕,衰减少,实验及数据分析证实了这个结论。更多还原

【Abstract】 A method for crack detection in metallic pipes based on vibration spectrum analysis is presented. Exciting the pipe on radius and detecting the wave at the same line parallel with the axis, the higher-frequency components of waves are absorbed considerably by the air crack, while the lower-frequency components can pass through the crack nearly without decay as diffraction. The experiment data and analysis show the conclusion.更多还原