Primary research interests include fracture mechanics, probabilistic mechanics, scaling, and structural reliability. Current research efforts focus on deterministic and probabilistic modeling of fracture and fatigue of structures that are made of brittle heterogeneous (quasibrittle) materials such as concrete, fiber composites, tough ceramics, etc. The research goal is to provide a deep understanding of the behavior of quasibrittle materials, and to develop a sound scientific basis for the design of various engineering structures including buildings, infrastructure, aircraft, ships, medical implants, etc.
Honors and Awards
Society of Engineering Science Young Investigator Medal, 2019
EMI Leonardo da Vinci Award, ASCE, 2017
Army Research Office Young Investigator Award, 2015
Z. P. Bažant and J.-L. Le (2017). Probabilistic Mechanics of Quasibrittle Structures: Strength, Lifetime, and Size Effect, Cambridge University Press, U.K.
A. Gorgogianni, J. Eliáš, and J.-L. Le (2020). “Mechanism-based energy regularization in computation modeling of quasibrittle fracture,” Journal of Applied Mechanics, ASME, 87(9), 091003.
A. Tripathi, S. Mantell, and J.-L. Le (2019). “A morphology based constitutive model for high density polyethylene,” Mechanics of Materials, 137, . doi: 10.1016/j.mechmat.2019.103091
Z. Xu, R. Ballarini, and J.-L. Le (2019.) “A renewal weakest-link model of strength distribution of polycrystalline silicon MEMS structures,” Journal of Applied Mechanics, ASME, 86(8), . doi: 10.1115/1.4043440
J.-L. Le and Z. Xu (2019). “A simplified probabilistic model for nanocrack propagation and its implications for tail distribution of structural strength,” Physical Mesomechanics, Invited Paper in Memory of Professor G. I. Barenblatt, 22(2), 85–95. doi: 10.1134/S1029959919020012
Z. Xu and J.-L. Le (2018). “On power-law tail distribution of strength statistics of brittle and quasibrittle structures,” Engineering Fracture Mechanics, 197, 80-91. doi: 10.1016/j.engfracmech.2018.04.009
J.-L. Le, J. Eliáš, A. Gorgogianni, J. Vievering, and J. Kveton (2018). “Rate-dependent scaling of dynamic tensile strength of quasibrittle structures,” Journal of Applied Mechanics, ASME, 85(2), . doi: 10.1115/1.4038496
Z. Xu and J.-L. Le (2017). “A first passage model for probabilistic failure of polycrystalline silicon MEMS structures,” Journal of the Mechanics and Physics of Solids, 99, 225–241. doi: 10.1016/j.jmps.2016.11.007