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Yueguang Wei
Ph.D., Professor
Department of Mechanics and Engineering Science,
College of Engineering, Peking University
Haidian District, Beijing 100871, P.R. China
  • Office Tel: +86-10-62767191
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Ph.D., Solid Mechanics, Tsinghua University

M.S., Engineering Mechanics, University of Mining and Technology of China (Beijing)

B.S., Mechanics, University of Science and Technology of Xian


Research Areas

Trans-scale mechanics of solids, Theoretical, experimental and size effect studies of materials at micro- and nano scale, Thin film delamination mechanisms at micro- and nano-scale thickness of films, Applications of discrete dislocation method to micromechanics analysis, Inverse problems concerning on microscale, Strain gradient plasticity and applications, Elastic-plastic fracture of solids, Elastic-plastic instability of solid material and structures, etc.


Research Profile

For more than 20 years, Dr. Yueguang Wei developed the trans-scale mechanics theory and trans-scale mechanics method, and he applied the theory and methods to the characterizations of strength, toughness and failure of the advanced materials. The developed trans-scale theory and methods include: the trans-scale mechanics theory considering both strain gradient effects and surface/interface effects ("top down" theory); Finite element method which is suitable for strain gradient theory; Characterizations of mechanical properties from both atomic calculations and experimental observations and measurements of micro-structure evolutions ("bottom up" approach); Development of linkage law from "bottom up" to "top down" theory, and so on. In recent years, Dr. Yueguang Wei systematically used the above theory and method to describe the thin film delamination, the failures of thermal barrier coating system, the property characterizations of nanostructured materials, the failure of cementation system, as well as micro-scale friction and other issues.


Awards and Honors

National Natural Science Award, the second prize, 2008, Ranking 1.

Achievement: Researches on micro-plasticity and micro-fracture of solids.

National Natural Science Award, the second prize, 2013, Ranking 2.

Achievement: Researches on the microscopic mechanisms of size effects of mechanics behavior for nano-structured metals.

National Natural Science Award, the third prize, 1995, Ranking 4.

Achievement: Elastic-plastic stress-strain fields and fracture criterion at crack tip.

Chief Scientist, National 973 Project, 2012.

Chief Scientist, International Research Team of Chinese Academy of Sciences, 2012.

Chief Scientist, Project of Creative Research Team of NSFC, 2007.

Overseas Outstanding Youth Science Fund, 2004.

New Century Talents Plan (“Bai-Qian-Wan”), 2004.

National Outstanding Youth Science Foundation, 1999.

“Bai-Ren” Project of the Chinese Academy of Sciences, 1998.

Youth Science and technology award of China, 1994.

Special Government Allowances of China, 1994.

Youth Scientist award of the Chinese Academy of Sciences, 1993.


Professional Activities

Editor-in-Chief, <Acta Mechanica Sinica> (Chinese Version)

Associate Editor-in-Chief, <Acta Mechanica Solida Sinica>

Member of Editorial Board, <Engineering Fracture Mechanics>

Member of Editorial Board, <International Journal of Applied Mechanics>

Member of Editorial Board, < Multidiscipline Modeling in Materials and Structures >

Member of Editorial Board, <Chinese Physics Letters>

Member, Academic Committee of Ministry Key-Laboratory of Applied Mechanics, Tsinghua University

Member, Academic Committee of State Key-Laboratory of Industrial Equipment, Dalian University and Technology.

Member, Academic Committee of State Key-Laboratory of Mechanical Strength and Vibration, Xian Jiaotong University

Member, Academic Committee of Ministry Key-Laboratory of Soft Matter and Robot, Zhejiang University

Member, Academic Committee of State Key-Laboratory of Geotechnical Mechanics, Institute of Geotechnical Mechanics, Chinese Academy of Sciences

Vice Chairman, Academic Committee of State Key-Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences

Member, Academic Committee of Ministry Key-Laboratory of Aviation and Space Flight, Northwestern Polytechnical University

Member, Academic Committee of Ministry Key-Laboratory of Civil Engineering, Chongqing University.


Selected Publications

1.Lihong Liang, Xiaona Li, Haiyan Liu, Yingbiao Wang, Yueguang Wei, Power-law characteristics of damage and failure of ceramic coating systems under three-point bending; Surface Coatings Technology 285:113-119, 2016.

2.Chen L, Wei YG, Overall mechanical behavior of nanocrystalline materials accompanied by damage evolution on grain boundaries; Int. J. Damage Mech., 23: 25-42, 2014.

3.Wu B, Liang LH, Ma HS, Wei YG, A Trans-Scale Model for Size Effects and Intergranular Fracture in Nanocrystalline and Ultra-fine Polycrystalline Metals; Comput. Mater. Science, Vol.57, 2-7, 2012.

4.Chen XL, Ma HS, Liang LH, Wei YG, A Surface Energy Model and Application to Mechanical Behavior Analysis of Single Crystals at Sub-micron Scale; Comput. Mater. Sci., 46: 723-727, 2009.

5.Wei YG, Zhao, H., Peeling experiments of ductile thin films along ceramic substrates ---Critical assessment of analytical models; Int. Journal of Solids & Structures, 45: 3779-3792, 2008.

6.Wei YG, A new finite element method for strain gradient theories and applications to fracture analyses; Eur. J. Mech. A/Solids, 25: 897-913, 2006.

7.Wei YG, Xu G., A multiscale model for the ductile fracture of crystalline materials; International Journal of Plasticity, 21: 2123-2149, 2005.

8.Wei YG, Modeling nonlinear peeling of ductile thin films---Critical assessment of analytical bending models using FE simulations; International Journal of Solids and Structures, 41: 5087-5104, 2004.

9.Wei YG & Hutchinson JW. Interface strength?work of adhesion and plasticity in the peel test; Int. Journal of Fracture, 93: 315-333, 1998.

10.Wei YG & Hutchinson JW. Steady-state crack growth and work of fracture for solids characterized by strain gradient plasticity; Journal of Mech. Phys. Solids, 45: 1253-1273, 1997.