Aerospace and Mechanical Engineering by Qi Luo

By Qi Luo

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The results show improvement for the sound absorption the low frequency range. References [1] K. Murali Mohan Rao, K. Mohana Rao: Composite Structures Vol. 77 (2007),p. 288. [2] P. Khristova ,O. Kordsachia,T. Khider:Bioresource TechnologyVol. 96 (2005), p. 79. [3] A. Kriker,G. Debicki, A. M. Khenfer, M. Chabannet: Cement & Concrete Composites Vol. 27 (2005),p. 554. B. Thayer: Journal of Hazardous Materials: Vol. 161 (2009), p. 608. [5] F. Al-Sulaiman:Energy Conversion and ManagementVol. 43 (2002), p.

For example, Altintas [2] has shown that the first-order autoregressive time series model AR1 can be used to distinguish the force signal during normal flank wear to that when tool failure occurs. Elbestawi et al. [3] They found that certain harmonics of the cutting force increase significantly with flank wear, the number of such sensitive harmonics being related to the number of inserts of the milling cutter and the immersion rate. Applied Mechanics and Materials Vol. 565 47 Sarhan et al [4] have shown that the magnitudes of the first harmonics of frequency spectrum increased significantly with increase in tool flank wear, feed per tooth and axial depth of cut.

Tsujiuchi, A. A. P. De Wilde, volume 4 of High performance structures and composites,Witpress(2002), p. 157.. [10] S. Ersoy, H. ApplAcoustVol. 7 (2009), p. 215. [11] R. M. M. R. Z. Nuawi: J ApplSciVol. 8 (2008), p. 3709. Fouladi, Md. M. Nor: Applied Acoustics Vol. 72 (2011), p. 35. [13] ISO 10534-2. Determination of sound absorption coefficient and impedance in impedance tubes – part 2: transfer function method (1998). [14] S. R. Mohanty:Appl. Acoust. Vol. 72 (2011), p. 108. Applied Mechanics and Materials Vol.

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