论文信息 - Vibration test and health monitoring of membrane structure using non-contact laser excitation

Vibration test and health monitoring of membrane structure using non-contact laser excitation

In this paper, a vibration testing and health monitoring system based on an impulse response excited by laser-induced breakdown is proposed to detect damage on membrane structure. A health monitoring apparatus is developed with this vibration testing system and damage detecting algorithm which only requires the vibration mode shape of the damaged membrane. The vibration mode shapes of the membrane structure are analyzed by using 2-D continuous wavelet transform, and applying boundary treatment and the concept of iso-surface. The effectiveness of the present approach is verified by finite element analysis and experimental results, demonstrating the ability of the method to detect and identify the location of damages.

[1] Christopher H. Jenkins,et al. Local Membrane Vibrations and Inflatable Space Structures , 2000 .

[2] Syed Twareque Ali,et al. Two-Dimensional Wavelets and their Relatives , 2004 .

[3] Umesh A. Korde,et al. Membrane vibration experiments: An historical review and recent results , 2006 .

[4] Itsuro Kajiwara,et al. Vibration testing based on impulse response excited by laser ablation , 2011 .

[5] Itsuro Kajiwara,et al. Structural health monitoring by high-frequency vibration measurement with non-contact laser excitation , 2011, Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[6] V. A. Chobotov,et al. Nonlinear Response of a Circular Membrane to Sinusoidal Acoustic Excitation , 1964 .

[7] Shozo Kawamura,et al. Bolted joint loosening detection by using laser excitation , 2013, Smart Structures.

[8] Itsuro Kajiwara,et al. Bolt loosening analysis and diagnosis by non-contact laser excitation vibration tests , 2013 .

[9] I. Kajiwara,et al. Vibration testing based on impulse response excited by pulsed-laser ablation: Measurement of frequency response function with detection-free input , 2012 .

[10] Pizhong Qiao,et al. A 2-D continuous wavelet transform of mode shape data for damage detection of plate structures , 2009 .

[11] Itsuro Kajiwara,et al. Acoustic testing in a very small space based on a point sound source generated by laser-induced breakdown: Stabilization of plasma formation , 2013 .