Publications
Zhang, H., Chang, L., Webster, M. N. and Jackson, A., 2003, Effects of Friction on the Contact and Deformation Behavior in Sliding Asperity Contacts, Tribology Transactions, Vol. 46, No. 4, pp. 514-521.
Zhao, Y. and Chang, L, 2002, A Micro-Contact and Wear Model for Chemical-Mechanical Polishing of Silicon Wafers, Wear, Vol. 252, pp. 220-226.
Webster, M. N., Lee, G. H. and Chang, L, 2003, Effect of EHL Conditions on the Behavior of Traction Fluids, submitted to Tribology Transactions.
Chang, L., 2003, On the Shear Localizations in EHL Films, submitted to ASME Journal of Tribology.
Chang, L., Qu, S., Webster, M. N. and Jackson, A, 2003, On the Mechanisms of the Dramatic Reduction in the EHL Traction under Low Temperature Conditions, submitted to Tribology Transactions.
Zhao, Y. and L. Chang. A Model of Asperity Interactions in Elastic-Plastic Contact of Rough Surfaces. ASME Journal of Tribology, Vol. 123, No. 4, pp. 857-864.
Fang, N., Chang, L., Johnston, G.J., Webster, M. N. and Jackson, A. "An Experimental/Theoretical Approach to Modeling the Viscous Behavior of Liquid Lubricants in EHL Contacts," Imech, Journal of Engineering Tribology.
Zhai, X. and Chang, L., "Some Insights into Asperity Temperatures in Mixed-Film Lubrication," Tribology International, Vol. 34, pp. 381-387.
Zhao, Y., Maietta, D., and Chang, L., 2000, "An Asperity Microcontact Model Incorporating the Transition from Elastic Deformation to Full Plastic Flow," ASME Journal of Tribology, Vol. 122, No. 1, pp. 86-93.
Zhai, X. and Chang, L., 2000, "A Transient Thermal Model for Mixed-Film Contacts," Tribology Transactions, Vol. 43, No. 3, pp. 427-434.
Fang, N., Chang, L., Jackson, A. and Webster, M. N., 2000 "A Non-Averaging Method of Determining the Rheological Properties of Traction Fluids," Tribology International, Vol. 33, pp. 751-760.
N. Fang, L. Chang, G. Johnston, M. Webster and A. Jackson, 2000, An Experimental/Theoretical Approach to Modeling the Viscous Behavior of Liquid Lubricants under EHL Conditions, 27th Leeds-Lyon Symposium on Tribology.
L. Chang, 2000, A Simple and Accurate Method to Calculate Transient EHL Film Thickness in Machine Components Undergoing Operation Cycles, Tribology Transactions, Vol. 43, No. 1, pp. 116-122.
Fang, N., Chang, L., and Johnston, G. J., 1999, "Some Insights into Micro-EHL Pressures," ASME Journal of Tribology , Vol. 121, No. 3, pp. 473-480.
Chang, L., 2000, "A Simple and Accurate Method to Calculate Transient EHL Film Thickness in Machine Components Undergoing Operation Cycles," Tribology Transactions, Vol. 43, No. 1, pp. 116-122.
N. Fang, L. Chang, M. Webster and A. Jackson, 1999, A Non-Averaging Method of Determining the Rheological Properties of Traction Fluids, SAE Paper No. 1999-01-1518.
N. Fang, L. Chang, G. Johnston, M. Webster and A. Jackson, 1999, An Internal Line-Contact EHL and Traction Test Rig, SAE Paper No. 1999-01-3609.
L. Chang, 1999, Modeling of Contact and Lubrication Problems – on the balance of accuracy and practicality, Herbert S. Cheng Symposium.
Zhai, X. and Chang, L., 1998, "An Engineering Approach to Deterministic Modeling of Mixed-Film Contacts," Tribology Transactions, in press.
Chang, L. and Gao, Y., 1998, "A Simple Numerical Method for Contact Analysis of Rough Surfaces," ASME Journal of Tribology, in press.
Fang, N., Chang, L., and Johnston, G. J., 1998, "Some Insights into Micro-EHL Pressures," ASME Journal of Tribology, in press.
Dama, R., Streit, D. and Chang, L., 1997, " Modeling and Analysis of a High-Speed Transmission with Multi-Path, Elastomeric Load-Share Gears," Mechanism and Machine Theory, Vol. 32, No. 3, pp.295-312.
Zhai, X., Needham, G. and Chang, L., 1997, "On the Mechanism of Multi-valued Friction in Unsteady Sliding Line Contacts Operating in the Regime of Mixed-Film Lubrication," ASME Journal of Tribology, Vol. 119, No. 1, pp. 149-155.
Dama, R. and Chang, L., 1997, "An Efficient Calculation of Traction in Elastohydrodynamic Contacts," Wear, Vol. 206, pp. 113-121.
Zhai, X., Chang, L., Hoeprich, M. R. and Nixon, H. P., 1997, "On Mechanisms of Fatigue Enhancement by Surface Dents in Heavily Loaded Rolling Line Contacts," Tribology Transactions, Vol. 40, No. 4, pp. 708-714.
Chang, L. and Zhao, W., 1995, "Fundamental Differences between Newtonian and Non-Newtonian Micro-EHL Results," ASME Journal of Tribology, Vol. 117, No. 1, pp. 29-35.
Chang, L. and Zhao, W., 1995, "Wavelength Dependence of Pressure Rippling in EHL with Random Surface-Roughness Profiles," Tribology Transactions, Vol. 38, No. 2, pp. 389-395.
Chang, L., 1995, "Deterministic Modeling and Numerical Simulation of Lubrication between Rough Surfaces -- A Review of Recent Development," Wear, Vol. 184, pp. 155-160.
Chang, L. "An Efficient Calculation of the Load and Coefficient of Restitution of Impact between Two Elastic Bodies with a Liquid Lubricant." ASME Journal of Applied Mechanics (1995).
Hall, P. B., L. Chang, and R. Thom. "An Experimental/Analytical Study of High-Speed and High-Load Rolling/Sliding Contacts with Low-Viscosity Fluids." STLE Tribology Transactions (1995).
L. Chang, 1995, Deterministic Modeling and Numerical Simulation of Lubrication between Rough Surfaces -- A Review of Recent Development, Wear, Vol. 184, pp. 155-160.
Chang, L., A. Jackson, and M.N. Webster. "Effects of 3-D Surface Topography on EHL Film Thickness and Film Breakdown." STLE Tribology Transactions vol. 37, n. 3, pp. 435-444 (1994).
Chang, L., M.N. Webster, and A. Jackson. "A Line-Contact Micro-EHL Model with Three-Dimensional Surface Topography." ASME Journal of Tribology vol. 116, n. 1, pp. 21-28 (1994).
Chang, L., A. Jackson, and M.N. Webster. "Effects of Three-Dimensional Surface Topography on EHL Film Thickness and Film Breakdown." STLE Tribology Transactions (1993).
Chang, L., M.N. Webster, and A. Jackson. "A Line-Contact Micro-EHL Model with Three-Dimensional Surface Topography, ASME Journal of Tribology." ASME Paper #93-Trib-43 (1993).
Chang, L., M.N. Webster, and A. Jackson. "On the Pressure Rippling and Roughness Deformation in Elastohydrodynamic Lubrication of Rough Surfaces." ASME Journal of Tribology vol. 115, n. 3, pp. 436-444 (1993).
Chang, L., and C. Farnum. "A Thermal Model for Elastohydrodynamic Lubrication of Rough Surfaces." STLE Tribology Transactions vol. 35, n. 2, pp. 281-286 (1992).
L. Chang, T. Conry and C. Cusano, 1990, Analysis of Kinematic and Dynamic Characteristics of High-speed Cylindrical Roller Bearings Using A Full Elastohydrodynamic Lubrication Model --- Part II: Results, Tribology Transactions, Vol. 33, No. 2, pp. 285-291.
L. Chang, C. Cusano and T. Conry, 1989, Effects of Lubricant Rheology and Kinematic Conditions on Micro-Elastohydrodynamic Lubrication, ASME Journal of Tribology, Vol. 111, No. 2, pp. 344-351.
L. Chang, 1989, An Efficient and Accurate Formulation of Surface-Deflection Matrix in Elastohydrodynamic Point Contacts, ASME Journal of Tribology, Vol. 111, No. 4, pp. 642-647.