A5016007416- Mechanical Behavior of Composites
- Textile materials and evaluations
- Structural Analysis and Optimization
- High-Velocity Impact and Material Behavior
- Fiber-reinforced polymer composites
- Additive Manufacturing and 3D Printing Technologies
- Structural Response to Dynamic Loads
- 3D Shape Modeling and Analysis
- Manufacturing Process and Optimization
- Polymer crystallization and properties
- Structural Analysis of Composite Materials
- Digital Image Processing Techniques
- Engineering Education and Curriculum Development
- Injection Molding Process and Properties
- Mechanical stress and fatigue analysis
- Vibration and Dynamic Analysis
- Engineering Education and Pedagogy
- Advanced Materials and Mechanics
- Computer Graphics and Visualization Techniques
- Assistive Technology in Communication and Mobility
- Composite Material Mechanics
- Optical measurement and interference techniques
- Ergonomics and Musculoskeletal Disorders
- Fluid Dynamics Simulations and Interactions
- Fault Detection and Control Systems
University of Delaware
2008-2017
Schlumberger (British Virgin Islands)
2007
Current additive manufacturing methods present the potential to construct net-shape structures with complicated architectures, thus eliminating need for multi-step processing and fasteners/joints. Combined these features is ability ascribe material properties at sub-millimeter scale, inspiring multi-material, functionally graded designs. These make an attractive option composite materials development. In effort extend this family of technologies beyond nano- micro-composites, we explore...
The development of a graphical simulation to describe the draping bidirectional fabrics over arbitrary surfaces is reported. applies any surface, described either analytically or numerically, and allows number draped configurations on surface. A unique configuration results when one warp thread weft are constrained specific paths crossover-point locations calculated by numerically solving intersection equations surface two spheres that represent all possible positions ends segment....
This study focuses on developing a global/local three-dimensional (3D) finite element model of Kevlar KM2 ® plain woven fabric applicable for examining ballistic impact from spherical projectile. The event is modeled in LS-DYNA including friction between the individual yarns as well projectile and fabric. When compared with predictive capabilities 3D that includes detailed undulating representation architecture over entire solution domain, savings computational effort afforded by become...
This article experimentally investigates the tensile strength distributions of 600 den Kevlar KM2 yarns under quasi-static loading. The were best characterized using 3-parameter Weibull and generalized Gamma distributions. In order to assess effects weaving on distributions, tested from a spool then compared extracted greige scoured fabrics. process treatments caused various levels degradation which shifted toward lower strengths. warp degraded greater extent than fill yarns. scouring...
In this study, transverse impact of a cylindrical projectile onto 600 denier Kevlar KM2 yarn (400 individual fibers) is studied using fiber length-scale three-dimensional finite element model to better understand projectile–fiber and fiber–fiber contact interactions on wave propagation failure within the yarn. A short time scale response indicates significant compressive deformation in that increases with velocity. Fiber-level modeling predicts flexural induces curvatures fibers enough...
A series of low-velocity drop-weight tests were conducted on glass/epoxy laminates to study the effect multiple non-coincident impacts residual compression and flexural properties. The impact characteristics properties recorded determine damage tolerance various energies separation distances. flexure after method was also developed compared test. Experimental results combined with a finite element model damaged region modeled as an elastic inclusion reduced stiffness resulting in stress...