A5019023883- Advanced ceramic materials synthesis
- Dental materials and restorations
- Rock Mechanics and Modeling
- Dental Implant Techniques and Outcomes
- High-Velocity Impact and Material Behavior
- Fatigue and fracture mechanics
- Advanced materials and composites
- Metal and Thin Film Mechanics
- Glass properties and applications
- Theoretical and Computational Physics
- Bone Tissue Engineering Materials
- Advanced Surface Polishing Techniques
- Mechanical Behavior of Composites
- Dental Research and COVID-19
- Structural Analysis of Composite Materials
- Orthopaedic implants and arthroplasty
- Advanced machining processes and optimization
- Drilling and Well Engineering
- Ultrasonics and Acoustic Wave Propagation
- Nuclear materials and radiation effects
- Bone health and osteoporosis research
- Non-Destructive Testing Techniques
- Granular flow and fluidized beds
- Diamond and Carbon-based Materials Research
- Endodontics and Root Canal Treatments
University of Florida
2012-2025
Florida College
2012
National Institute of Standards and Technology
2009
Pennsylvania State University
1986-2008
Universidade de Passo Fundo
2006
Indiana University – Purdue University Indianapolis
2006
Material Sciences (United States)
2001-2004
United States Naval Research Laboratory
1975-2000
American Ceramic Society
1975-2000
Naval Research Laboratory Center for Bio/Molecular Science and Engineering
2000
Fractal geometry is a non‐Euclidean which has been developed to analyze irregular or fractional shapes. In this paper, fracture in ceramic materials analyzed as fractal process. This means that viewed self‐similar We have examined the surfaces of six different alumina and five glass‐ceramics, with microstructures, test for behavior. Slit island analysis Fourier transform methods were used determine dimension, D , successively sectioned surfaces. found correlation between increasing part...
Spherical nanosize Ag/SiO2 composite particles have been synthesized within reverse micelles via metal alkoxide hydrolysis and condensation. The size of the thickness coating can be controlled by manipulating relative rates condensation reactions tetraethoxysilane (TEOS) microemulsion. Composite in range 20−35 nm are produced. As molar ratio water to surfactant is increased above 10, distribution broadens. Absorption spectra used dynamically monitor reaction growth. effects other synthesis...
In this paper, we review the phenomenon of delayed failure, a life‐limiting process for glasses that are subjected to tensile stresses. With development crack‐weakening theories (Ingles and Griffith) observation surface damage enhances scientific community recognized failure in glass is caused by growth cracks Fracture mechanics techniques were used quantify crack rates terms applied stress, temperature, chemical environments cause subcritical growth. We have been developed rationalize data,...
Fracture mechanics is combined with fracture surface analysis to analyze brittle failure of glass bars which were tested relative the direction grinding. Grinding essentially produces two sets flaws from occurs. In most severe set, formed basically parallel grinding direction, ratio average depth ( a ) half‐width b 0.5. less perpendicular / 1.6. both are generally associated particularly deep groove or gouge. The strength reduction resulting testing results larger flaw size and slightly...
Tape casting and hot‐pressing were used to produce metal/ alumina laminate composites. The mechanical behavior of these laminates was characterized. strength toughness the greatly improved in comparison that monolithic alumina. Indentation values remained approximately constant for indent loads between 10 100 N. Thus, this type appears be a good candidate damage‐tolerant composite material design.
Fractal geometry has been used to describe irregular fracture surfaces in a quantitative way. The fractal dimensional increment related the toughness of material through elastic modulus and characteristic structure parameter, 0 . study fractography shown relationship between flaw/mirror size ratio toughness. An experimental observation that is another b Combining all these relationships leads conclusion increment, D * , directly ratio. Experimental measurements dimension on glasses,...
Thermal, mechanical, and optical properties of Cleartran® multispectral zinc sulfide were measured. Heat capacity, thermal conductivity, expansion measured over the temperature range 213 to 643 K. Young's modulus shear at 289 473 The characteristic four-point flexure strength for a 1-cm2 area was 75.4±0.5 MPa K 89.5±0.4 K, with Weibull moduli 11.0±0.7 19.3±1.5, respectively. All 24 specimens tested conformed curve. However, 2 23 had low, outlying strengths. fracture origins outliers surface...