A5053592393- Mechanical Behavior of Composites
- Dental materials and restorations
- Bone Tissue Engineering Materials
- Dental Implant Techniques and Outcomes
- Advanced ceramic materials synthesis
- Aluminum Alloys Composites Properties
- Advanced materials and composites
- Epoxy Resin Curing Processes
- Fiber-reinforced polymer composites
- Aluminum Alloy Microstructure Properties
- Electrospun Nanofibers in Biomedical Applications
- Natural Fiber Reinforced Composites
- High Temperature Alloys and Creep
- Intermetallics and Advanced Alloy Properties
- Metal and Thin Film Mechanics
- Metallurgy and Material Forming
- Advanced Semiconductor Detectors and Materials
- Polymer crystallization and properties
- Additive Manufacturing and 3D Printing Technologies
- Additive Manufacturing Materials and Processes
- Orthopaedic implants and arthroplasty
- Advanced Materials Characterization Techniques
- Semiconductor materials and devices
- Composite Material Mechanics
- Ferroelectric and Piezoelectric Materials
University of Alabama at Birmingham
2009-2024
St. Vincent's Birmingham
2022
Tuskegee University
2000
University of Alabama
1994
National Institute of Standards and Technology
1992
Michigan Technological University
1986-1990
Low velocity impact response of glass reinforced polymer composites, which have the potential to self-repair both micro- and macro-damage, has been investigated. This class material falls under category passive smart composites. The self-repairing mechanism is achieved through incorporation hollow fibers in addition normal solid reinforcing fibers. store damage-repairing solution or chemicals that are released into matrix damaged zone upon fiber failure. Plain-weave S-2 fabric reinforcement,...
Abstract Purpose: The effect of dental fabrication procedures zirconia monolithic restorations and changes in properties during low‐temperature exposure the oral environment is not completely understood. purpose this study was to investigate for by simulation relative flexural strength, nanoindentation hardness, Young's modulus, surface roughness, structural stability yttria‐stabilized zirconia. Materials Methods: A total 64 specimens were prepared simulate practice. divided into control...
To perform qualitative analysis using scanning electron microscopy (SEM) of fracture surfaces for ceramic and polymeric dental materials broken via standardized flexural crunch-the-crown (CTC) tests.Zirconia, glass-ceramic, (Trilor; TRI, Juvora; JUV, Pekkton; PEK) were loaded crowns CTC tests, discs (zirconia glass-ceramics) piston-on-3 ball bars (polymer) 3-point bend (zirconia, 4-point tests. SEM was used to characterize the identify surface features (e.g., origin, mist, hackle, direction...
The present work addresses the processing parameters, methodology, and limitations of vacuum assisted resin transfer molding (VARTM) carbon fabric-reinforced thermoplastic polyamide 6 (PA6) matrix panels on laboratory scale. VARTM is a mature technology for producing large-scale thermoset composite parts/structures but has not been used composites, which are manufactured primarily by compression molding, extrusion, and/or injection molding. In general, liquid thermoplastics limitations, such...
Abstract Aims Low‐temperature degradation (LTD) of yttria‐stabilized zirconia can produce increased surface roughness with a concomitant decrease in strength. This study determined the effectiveness artificial aging (prolonged boiling/autoclaving) to induce LTD Y‐TZP (yttria‐tetragonal zirconia‐polycrystals) and used for transformation depth progression analyses. The null hypothesis is techniques tested same amount transformation, not time/temperature dependent causes constant throughout...
The study addresses the stability of point defects in SrTiO3 (STO) during thin film processing using electron paramagnetic resonance (EPR) spectroscopy. In particular, intensity Fe3+VO EPR signal is monitored after various steps growth STO films on substrates. Controlled O2 and vacuum heat treatments are also performed to clarify fundamental mechanisms responsible for effects different steps. Comparison results from fabrication with those obtained exposure control ambient shows that presence...
Abstract This investigation studied how the incorporation of a natural crosslinking agent, genipin (Gp), into AlloDerm® (AD) rehydration protocol affects biomechanical properties and stability collagenous matrix. AD is minimally processed, noncrosslinked, freeze‐dried collagen‐based graft. Samples were immersed in saline solution for 5 min then randomly assigned further (30 min) three groups, according to agent: G1‐control (saline), G2‐1 wt % genipin, G3‐1 glutaraldehyde. Gp prolonged time 6...
Recent developments in hot-melt impregnation, extrusion, and thermoforming offer multiple avenues for the design manufacture of low-cost thermoplastic composites mass transit automotive applications. Fiber reinforced thermoplastics such as glass/polypropylene (glass/PP) have found their applications front-end bumper beams, under body shields, other These materials also potential usage vehicles, buses. The present study focuses on a segment floor bus using glass/PP woven tape forms developed...