Hazard Mitigation and Infrastructure Rehabilitation Extreme Natural Loads: Understanding, monitoring and prediction of  extreme natural loads on the built environment and ways to mitigate the impact of such  loadings Damage Identification: Developing algorithms for the inverse identification of stiffness reductions in structures due to damage.  Using sensors and defining optimal sensor location for damage identification.  Fiber Reinforced Plastics: Use of FRPs in rehabilitation of railroad bridges to improve load ratings Risk Assessment: Probabilistic assessment of specific loadings and resulting structural response for improved cost-benefit analysis in structural design
Computational Mechanics Multiscale Stochastic Models: Multiscale Stochastic Finite Element Method (MsSFEM) for multiscale stochastic problems. Numerical Stochastic Homogenization Method (NSHM) for highly heterogeneous random media problems: Use of techniques like upscaling and scale decoupling techniques, stochastic Galerkin method, orthogonal decomposition of random fields, finite element methods, the Fourier spectral method, etc. Soil-Structure Interaction: Use of Finite elements to model soil-structure interaction in bridge foundations subjected to cyclic loading. Optimization: Developing unique optimality criteria in quadratic optimization problems to solve inverse identification problems. Optimal updating of FE models to reproduce measured natural frequencies and mode-shapes. Fracture Mechanics: Using Boundary element programs in the analysis of 3-D crack propagation.  Fatigue studies to find hours-to-failure. Stochastic finite element methods to model damage and size effects of materials.
Solid and Structural Mechanics Composite and high-performance materials: Characterization, modeling and optimization of nano- and micro-heterogeneous materials (e.g. composite, concrete, soil) and composite materials based structures (e.g. sandwich panels); Fracture and damage of materials; Cyclic Loading on Integral Bridge using Large-Scale Testing and FE Analysis. Instrumentation of  foundations and superstructure to  collect and analyze real-time data on strains, pressures, displacements and temperatures of the bridge. Design Recommendations for Integral-Abutment Bridges: Design Specifications for integral abutment bridges for NJDOT. Analysis of HPS Bridges: Analyze load distribution factors, dynamic factors and composite action of an HPS bridge and comparison to LRFD codes, FE modeling and measurements. Advise FHWA of design limitations of HPS bridges.
Structural Dynamics   Structural dynamic design for Marine Structures: Fixed and floating offshore platforms, risers, moorings, surface and sub-surface vessels. Experimental studies of test scaled models in towing tank and wave maker. Structural Control: Developing methods for the semi-active control of structures using variable stiffness. Modal Analysis: Modal analysis and optimization for damage identification in structures. Wind Effects on Structures: Nonlinear dynamic modeling of wind-induced vibration of buildings and bridges in uniform and stochastic flow conditions
Probabilistic Modeling Random materials: Characterization and modeling of morphologies for random materials and porous media Stochastic Simulation: Higher-order simulation of stochastic processes for applications in wind, ocean, and earthquake engineering.