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Download e-book for kindle: Advanced Aerospace Applications, Volume 1: Proceedings of by Antonio Culla, Walter D Ambrogio (auth.), Tom Proulx (eds.)

By Antonio Culla, Walter D Ambrogio (auth.), Tom Proulx (eds.)

ISBN-10: 1441993010

ISBN-13: 9781441993014

Advanced Aerospace purposes, quantity 1. complaints of the twenty ninth IMAC, A convention and Exposition on Structural Dynamics, 2011, the 1st quantity of six from the convention, brings jointly 32 contributions to this crucial region of study and engineering. the gathering offers early findings and case reports on basic and utilized features of Structural Dynamics, together with papers on Aeroelasticity, flooring trying out, Dynamic trying out of Aerospace constructions, and Random Vibration.

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Extra info for Advanced Aerospace Applications, Volume 1: Proceedings of the 29th IMAC, A Conference on Structural Dynamics, 2011

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In this first step, a comparison could be made with accelerometer and a surface microphone very near to the probe. 1 Linearity of the probes First the linearity of the particle velocity probes is checked. This is done by comparing the spectra of the pre- and the post low level run [1]. There was no visible damage of the probes and the higher level responses are very similar to the lower ones. This means the high level run did not affect the integrity of the probes. 6dB) 3 10 -2 10 2 10 -3 Velocity [(m/s)2/Hz] Pressure [Pa2/Hz] 10 1 10 -4 10 0 10 -5 10 -1 10 -6 2 3 10 10 Frequency [Hz] 10 2 3 10 10 Frequency [Hz] Fig.

270-273, 14-21. , “An approach to guided wave mode selection for inspection of laminated plate,” J. Reinforced Plastics and Composites, Vol. 12(5), 536-544 (1993). , “Ultrasonic Guided Wave Modal Analysis Technique(UMAT) for Defect Detection,” Proceedings of IMAC XVIII, Jacksonville, FL, Feb. 2010. [7] Fei Yan and Joseph L. Rose, (2010), Defect detection using a new ultrasonic guided wave modal analysis technique (UMAT), Proc. SPIE, Vol. 7650, 76500R. L. Rose, Time delay comb transducers for aircraft inspection, The Aeronautical Journal, Vol.

Basically, an A0/S0 ratio was calculated for each sensor position under each test conditions by dividing the 31 vibration amplitude obtained with the 500 ns time delay by the corresponding amplitude obtained with the 4000 ns time delay. The results shown in Figure 9 are overall relative changes of the A0/S0 ratios for the boundary condition changes and the two defects. The results suggested that the A0/S0 ratio can be a good feature for damage detection as it is very sensitive to the plate damage, but does not react on boundary condition changes much.

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Advanced Aerospace Applications, Volume 1: Proceedings of the 29th IMAC, A Conference on Structural Dynamics, 2011 by Antonio Culla, Walter D Ambrogio (auth.), Tom Proulx (eds.)


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