- Cited by 175
Lam, David C.C. and Chong, Arthur C.M. 2000. Effect of cross-link density on strain gradient plasticity in epoxy. Materials Science and Engineering: A, Vol. 281, Issue. 1-2, p. 156.
Lam, D. C. C. and Chong, A. C. M. 2001. Characterization and modeling of specific strain gradient modulus of epoxy. Journal of Materials Research, Vol. 16, Issue. 02, p. 558.
Lam, David C.C. and Chong, Arthur C.M. 2001. Model and experiments on strain gradient hardening in metallic glass. Materials Science and Engineering: A, Vol. 318, Issue. 1-2, p. 313.
Chong, A. C. M. Yang, F. Lam, D. C. C. and Tong, P. 2001. Torsion and bending of micron-scaled structures. Journal of Materials Research, Vol. 16, Issue. 04, p. 1052.
Zhang, Tong-Yi and Xu, Wei-Hua 2002. Surface Effects on Nanoindentation. Journal of Materials Research, Vol. 17, Issue. 07, p. 1715.
Yang, F. Chong, A.C.M. Lam, D.C.C. and Tong, P. 2002. Couple stress based strain gradient theory for elasticity. International Journal of Solids and Structures, Vol. 39, Issue. 10, p. 2731.
Lam, D.C.C. Yang, F. Chong, A.C.M. Wang, J. and Tong, P. 2003. Experiments and theory in strain gradient elasticity. Journal of the Mechanics and Physics of Solids, Vol. 51, Issue. 8, p. 1477.
Zhang, Tong-Yi Xu, Wei-Hua and Zhao, Ming-Hao 2004. The role of plastic deformation of rough surfaces in the size-dependent hardness. Acta Materialia, Vol. 52, Issue. 1, p. 57.
Tjernlund, Jessica Agde Gamstedt, E. Kristofer and Xu, Zhi-Hui 2004. Influence of molecular weight on strain-gradient yielding in polystyrene. Polymer Engineering and Science, Vol. 44, Issue. 10, p. 1987.
Swaddiwudhipong, S. Poh, L.H. Hua, J. Liu, Z.S. and Tho, K.K. 2005. Modeling nano-indentation tests of glassy polymers using finite elements with strain gradient plasticity. Materials Science and Engineering: A, Vol. 404, Issue. 1-2, p. 179.
Tong, Pin Lam, David C.C. and Yang, Fan 2005. Mode I solution for micron-sized crack. Engineering Fracture Mechanics, Vol. 72, Issue. 12, p. 1779.
Chong, A.C.M. Yang, Fan Lam, David C.C. and Tong, Pin 2005. Mechanics Framework for Micron-Scale Planar Structures . Advanced Materials Research, Vol. 9, Issue. , p. 173.
Jiang, W. H. and Atzmon, M. 2005. Mechanical strength of nanocrystalline/amorphous Al90Fe5Gd5 composites produced by rolling. Applied Physics Letters, Vol. 86, Issue. 15, p. 151916.
Tjernlund, Jessica Agde Kristofer Gamstedt, E. and Gudmundson, Peter 2006. Length-scale effects on damage development in tensile loading of glass-sphere filled epoxy. International Journal of Solids and Structures, Vol. 43, Issue. 24, p. 7337.
Gudmundson, Peter 2006. Modelling of length scale effects in viscoelastic materials. European Journal of Mechanics - A/Solids, Vol. 25, Issue. 3, p. 379.
Munz, M 2006. Evidence for a three-zone interphase with complex elastic–plastic behaviour: nanoindentation study of an epoxy/thermoplastic composite. Journal of Physics D: Applied Physics, Vol. 39, Issue. 18, p. 4044.
Han, Chung-Souk and Nikolov, Svetoslav 2007. Indentation size effects in polymers and related rotation gradients. Journal of Materials Research, Vol. 22, Issue. 06, p. 1662.
Chicot, D. Roudet, F. Soom, A. and Lesage, J. 2007. Interpretation of instrumented hardness measurements on stainless steel with different surface preparations. Surface Engineering, Vol. 23, Issue. 1, p. 32.
Chicot, D. and Mercier, D. 2008. Improvement in depth-sensing indentation to calculate the universal hardness on the entire loading curve. Mechanics of Materials, Vol. 40, Issue. 4-5, p. 171.
Kong, Shengli Zhou, Shenjie Nie, Zhifeng and Wang, Kai 2008. The size-dependent natural frequency of Bernoulli–Euler micro-beams. International Journal of Engineering Science, Vol. 46, Issue. 5, p. 427.
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Plasticity in material is typically described as a function of strain, but recent observations from torsion and indentation experiments in metals suggested that plasticity is also dependent on strain gradient. The effects of strain gradient on plastic deformation in thermosetting epoxy and polycarbonate thermoplastic were experimentally investigated by nanoindentation and atomic force microscopy in this study. Both thermosetting and thermoplastic polymers exhibited hardening as a result of imposed strain gradients. Strain gradient plasticity theory developed on the basis of a molecular kinking mechanism has predicted strain gradient hardening in polymers. Comparisons made between indentation data and theoretical predictions correlated well. This suggests that strain gradient plasticity in glassy polymers is determined by molecular kinking mechanisms.
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- ISSN: 0884-2914
- EISSN: 2044-5326
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