Research 研究

My research group deals with rotors (a technical term of “round objects rotating about a fixed axis”) and vibration of structures. In particular, we are working on the following aspects (Please consult my research group site for a more detailed description):

  1. Improve machine tool spindles based on coupled mechanical-thermal analysis

  2. Identify dynamic behaviour (e.g. natural frequencies) and physical parameters (e.g. stiffness) of machines, both by improved experiment design and novel signal processing techniques that are more robust than current methods.

  3. Seek efficient methods of constructing accurate computer models

  4. Design structures that have specific dynamic behaviour

Our work mainly applies to precision manufacturing and machine tool design, but we have worked on car bodies, wind turbines and even non-Newtonian fluid!


Projects 研究項目

2012

  1. Principal Investigator, "Investigation of the acoustic impedance of a noise-cancellation loudspeaker in active noise control (ANC) action", Small project funding number 201109176059 (by the University of Hong Kong)

  2. Deputy Project Coordinator, "Development of an Environmentally Friendly Sound Absorption Panel for Broadband Noise Reduction Purpose", Innovation and Technology Support Programme (Project number ITS/095/10), Innovation and Technology Fund, the HKSAR Government

2013-2015

  1. Principal Investigator, "含不確定參數的轉動結構之振動分析", 國家科學委員會計畫編號 NSC 102-2218-E-005-006-MY2

Publications 著作

論文 Theses

"Variability of blade vibration in mistuned bladed discs", PhD thesis submitted to Imperial College London, 2009. (Link)

"Acoustics in small rooms", MSc thesis submitted to the Technical University of Munich, 2006. (Link)

"Acoustic behaviour of musical instruments", Final Year Project report submitted to the University of Hong Kong, 2004. (Link)

期刊 Journals (SCI)

C.-Y. Tai and Y.J. Chan. A hierarchic high-order Timoshenko beam finite element. Computers & Structures 165 (2016) pp. 48–58 (doi:10.1016/j.compstruc.2015.12.002)

Yumin Zhang, Yum-Ji Chan and Lixi Huang. Thin broadband noise absorption through acoustic reactance control by electro-mechanical coupling without sensor. J. Acoust. Soc. Am. 135, 2738 (2014) (doi: 10.1121/1.4871189)

Yum-Ji Chan, Lixi Huang, and James Lam. Effects of secondary loudspeaker properties on broadband feedforward active duct noise control. J. Acoust. Soc. Am. 134(1) 2013, pp. 257-263. (doi: 10.1121/1.4808079)

Chan, Y.-J. and Ewins, D. J.. Prediction of Vibration Response Levels of Mistuned Integral Bladed Disks (blisks): Robustness Studies. Transactions of the ASME. Journal of Turbomachinery 134 (2012), 044501.

Montesinos, César A.F., Tse, Zion T.H., Chan, Yum J., Elhawary, Haytham, Rea, Marc, Hamed, Abbi, Young, Ian and Lamperth, Michael. Finite-element analysis for magnetic resonance image artifact evaluation. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine January 226(1) (2012), pp. 49-54. (doi:10.1177/0954411911427506)

Tse, Z.T.H., Chan, Y.J., Janssen, H., Hamed, A., Young, I. and Lamperth, M.. Piezoelectric actuator design for MR elastography: implementation and vibration issues. The International Journal of Medical Robotics and Computer Assisted Surgery 7(3) (2011), pp. 353-360. (doi: 10.1002/rcs.405)

Chan, Y.-J. and Ewins, D. J.. The Amplification of Vibration Response Levels of Mistuned Bladed Disks: its Consequences and its Distribution in Specific Situations. Transactions of the ASME. Journal of Engineering for Gas Turbines and Power 133 (2011), 102502. (doi: 10.1115/1.4003021)

Chan, Y.-J. and Ewins, D. J.. A Comprehensive Procedure to Estimate the Probability of Extreme Vibration Levels due to Mistuning. Transactions of the ASME. Journal of Engineering for Gas Turbines and Power 132 (2010), 112505. (doi: 10.1115/1.4001065)

Chan, Y.-J. and Ewins, D. J.. Management of the variability of vibration response levels in mistuned bladed discs using robust design concepts, Part 1: Parameter design. Mechanical Systems and Signal Processing 24 (2010), pp. 2777-2791. (doi:10.1016/j.ymssp.2010.06.006)

Chan, Y.-J. and Ewins, D. J.. Management of the variability of vibration response levels in mistuned bladed discs using robust design concepts, Part 2: Tolerance design. Mechanical Systems and Signal Processing 24 (2010), pp. 2792-2806. (doi:10.1016/j.ymssp.2010.06.005)

研討會 Conferences

Yum Ji Chan and Kuang-Yu Chen, Measurement of frequency response functions of rotating spindles. Presented in IOMAC 2015, Gijon, Spain.

Chan, Y.-J., Zhang Y. and Huang, L.. Determination of the physical parameters of systems with a time-domain approach. Oral presentation in Acoustics 2012, Hong Kong, China.

Chan, Y.-J. and Huang, L. and Lam, J.. Constraints of ideal broadband noise cancellation in feedforward active noise control systems, poster presented in the Inter-noise 2011, Osaka, Japan, September 4-7, 2011.

Ewins, D. J. and Chan, Y.-J.. Vibration of Rotating Bladed Discs: Mistuning, Coriolis, and Robust Design, presented in the IUTAM Symposium on Emerging Trends in Rotor Dynamics, New Delhi, India, March 23- 26, 2009.

Chan, Y.-J. and Ewins, D. J.. A comprehensive set of procedures to estimate the probability of extreme vibration levels due to mistuning, presented in ASME Turbo Expo 2009, Orlando, Florida, June 8-12, 2009. (Later transformed into the journal paper numbered GTP-09-1342)

Chan, Y.-J. and Ewins, D. J.. The application of robust design strategies on managing the uncertainty and variability issues of the blade mistuning problem, presented in the IUTAM Symposium on the Vibration Analysis of Structures with Uncertainties, St. Petersburg, Russia, July 6-10, 2009.

Guggenberger, J. and Chan, Y.-J.. Effiziente Fluid-Struktur-Koppelung (FSI) mit Component Synthesis Method (CMS) unter Verwendung von Modal based Attachment Modes (MAM) (Efficient Fluid-Structure Coupling (FSI) with Component Synthesis Method (CMS) with the use of Modal based Attachment modes) (in German), presented in the German Acoustic Society (DAGA) conference, Stuttgart, Germany, 2006.