【摘 要】
：
This paper presents a two dimensional(2D)linear PZTs array and spatial filter based damage and impact imaging method without using the Lamb wave group veloc
【机 构】
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The State Key Lab of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautic
【出 处】
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The 2nd International Conference on Structural Health Monito
论文部分内容阅读
This paper presents a two dimensional(2D)linear PZTs array and spatial filter based damage and impact imaging method without using the Lamb wave group velocity.In this method,the damage signal is extracted from on-line monitoring signal,and the narrowband impact signal is extracted from broadband impact response signal by the complex Shannon wavelet transform.Secondly,the angle of damage or impact position relative to each array is calculated by the spatial filter.
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