81. The machining noise control of large size extruded aluminum utilized in high-speed trains

D. P. Yang1, Q. F. Wang2, H. C. Zhang3, H. W. Sun4, T. Feng5, H. Y. Xu6, X. H. Zhou7

1, 2, 6, 7Key Laboratory of Geo-Exploration Instrumentation Ministry of Education,
College of Instrumentation and Electrical Engineering, Jilin University, Changchun, P. R. China

3College of Materials Science and Engineering, Jilin University, Changchun, P. R. China

3, 4, 5Changchun Railway Vehicles Co., Ltd., Changchun, P. R. China

7Corresponding author

E-mail: 1ydp@jlu.edu.cn, 2qfwang14@mails.jlu.edu.cn, 3zhanghaicang@cccar.com.cn, 4sunhewei@cccar.com.cn, 5fengtong@cccar.com.cn, 6xuhy14@mails.jlu.edu.cn, 7zhouxiaohua@jlu.edu.cn

(Received 28 October 2015; received in revised form 3 January 2016; accepted 14 January 2016)

Abstract. The noise level was assessed by measuring and processing the sound pressure during the mechanical treatment of large size aluminum extrusions utilized in high-speed trains. The noise control tests were proposed by various machining technologies including the adjustments of cutter tool, machining feed rate, cutting way and sealing the openings with sound-absorbing material or not. The results indicated that obvious noise suppression can be obtained by using monolithic cutters, and sealing the openings and ports with sound-absorbing materials, which has little effect on the whole machining efficiency. It is helpful for noise reduction using the machining technologies of cutting along milling and slowing the feed rate down, which requires a balance between noise level and machining efficiency.

Keywords: machining noise, machining technology, extruded aluminum, high-speed train.

References

[1]        Hardy A. E. J. Measure and assessment of noise within passenger trains. Journal of Sound and Vibration, Vol. 231, Issue 3, 2000, p. 819‑829.

[2]        Parizet Etienne, Hamzaoui Nacer, Jacquemoud Johan Noise assessment in a high‑speed train. Applied Acoustics, Vol. 63, 2002, p. 1109‑1124.

[3]        Mellet C., Le’tourneaux F., Poisson F., Talotte C. High speed train noise emission: latest investigation of the aerodynamic/rolling noise contribution. Journal of Sound and Vibration, Vol. 293, 2006, p. 535‑546.

[4]        Lee Pyoung Jik, Hong Joo Young, Jeon Jin Yong Assessment of rural soundscapes with high‑speed train noise. Science of the Total Environment, Vols. 482‑483, 2014, p. 432‑439.

[5]        Connolly D. P., Kouroussis G., Woodward P. K., Giannopoulos A., Verlinden O., Forde M. C. Scoping prediction of re-radiated ground-borne noise and vibration near high speed rail lines with variable soils. Soil Dynamics and Earthquake Engineering, Vol. 66, 2014, p. 78‑88.

[6]        Nagakura K. Localization of aerodynamic noise sources of Shinkansen trains. Journal of Sound and Vibration, Vol. 293, 2006, p. 547‑556.

[7]        Kuwano Sonoko, Namba Seiichiro, Okamoto Takehisa Psychological evaluation of sound environment in a compartment of a high-speed train. Journal of Sound and Vibration, Vol. 277, 2004, p. 491‑500.

[8]        Patsouras C., Fastl H., Widmann U., Hoelzl G. Psychoacoustic evaluation of tonal components in view of sound quality design for high-speed train interior noise. Acoustical Science and Technology, Vol. 23, 2002, p. 113‑116.

[9]        Park Buhm, Jeon Jin-Yong, Choi Sunghoon, Park Junhong Short-term noise annoyance assessment in passenger compartments of high-speed trains under sudden variation. Applied Acoustics, Vol. 97, 2015, p. 46‑53.

Cite this article

Yang D. P., Wang Q. F., Zhang H. C., Sun H. W., Feng T., Xu H. Y., Zhou X. H. The machining noise control of large size extruded aluminum utilized in high‑speed trains. Journal of Measurements in Engineering, Vol. 4, Issue 1, 2016, p. 1‑6.

 

Journal of Measurements in Engineering. March 2016, Volume 4, Issue 1

© JVE International Ltd. ISSN Print 2335-2124, ISSN Online 2424-4635, Kaunas, Lithuania