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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.

Education

• Ph.D. Civil Engineering, Northwestern University (2010)
• M.Eng. Civil Engineering, National University of Singapore (2005)
• B.Eng (1st Class Honors) Civil Engineering, National University of Singapore (2003)

Professional Background

• Structural Engineer, ARUP, 2005-2006

Honors and Awards

• IASSAR Early Achievement Research Award, The International Association for Structural Safety and Reliability, 2022
• Society of Engineering Science Young Investigator Medal, 2019
• EMI Leonardo da Vinci Award, ASCE, 2017
• Army Research Office Young Investigator Award, 2015

Books

Z. P. Bažant, J.-L. Le, and M. Salviato (2021). Quasibrittle Fracture Mechanics: A First Course, Oxford University Press, Oxford, U.K. (336 pages)

Z. P. Bažant and J.-L. Le (2017). Probabilistic Mechanics of Quasibrittle Structures: Strength, Lifetime, and Size Effect, Cambridge University Press, U.K.

Selected Publications

A. Gorgogianni, J. Eliáš, and J.-L. Le (2022) "Mesh objective  stochastic simulations of quasibrittle fracture," Journal of the Mechanics and Physics of Solids, 159, 104745.

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, [103091]. 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), [081005]. doi: 10.1115/1.4043440

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), [021003]. 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