Fracture Mechanics and Crack Propagation Expert Consultant ResumeThis expert specializes in aerospace materials, advanced strength of materials, advanced mechanics of materials, and advanced fracture mechanics. Further expertise includes biomechanics, experimental methods in solid mechanics, experimental methods in mechanical engineering, and nondestructive evaluation. Other areas of expertise are measurements and instrumentation, mechanics of materials, dynamics, and materials science. Furthermore are mathematical theory of plasticity, mechanics, vibrations laboratory, and response of materials to impulsive loading.
This consultant's areas of expertise include solid mechanics, statics, theory of elasticity, and wave propagation. Other areas are elastic stress distribution at a crack front using scattered light photoelasticity, experimental investigation into interface fracture, constitutive behavior of polycarbonate, and mixed-mode fracture. This expert also specializes in mechanics and mechanisms of fracture in polymeric materials, scattered light photoelastic investigation of three-dimensional stress fields, necking and necking induced molecular orientation on mechanical and fracture behavior of polycarbonate.
Additional experience includes numerical simulation of transient crack growth experiments, mechanical characterization of high temperature superconductors, and brazing of metal-ceramic joints. Other experience includes dynamic crack tip stress field, three dimensionality of crack tip stress fields, ambient uniaxial and biaxial viscoplastic behavior of inconel 718, and superconducting wires. This expert also has experience with nondestructive investigation of the thermal stresses in metal matrix composites using ultrasonic velocity measurements, dynamic mixed-mode fracture, buckling of filament wound tanks under external pressure, and microstructural refinement. Other knowledge and skills this expert has include high strain rate compressive behavior of polycarbonate, confined compression, superconductor precursor nano-particles by infrared spray pyrolysis, and mechanical response of aortic stent.
Other areas of expertise and specialization include dynamic characterization of ni ti shape memory alloy, mechanical behavior of helicoidal composite, viscoelastic materials characterization under multiaxial loading, and mechanical behavior of metals subjected to thermal loading by short duration current pulses. Further specialties include the dynamics of phase transformations, elastic plastic fracture mechanics, deformation localization problems under quasi-static, and dynamic loading. Other areas of emphasis are boundary element methodology for crack path prediction in brittle and quasi-brittle materials incorporating a cohesive zone model.
This associate has expertise in areas related to seeded infiltration and growth, detection of transverse cracking in a hybrid composite laminate using acoustic emission, mesoscale friction tester, and exploring friction at length scales intermediate to atomic force microscopes and macroscale devices. This expert has experience with generating high strain rate loading on materials and structures, drop weight tower, split-Hopkinson pressure and tension apparatus. Further emphasis includes electromagnetic loading stress-wave generator, high speed camera for imaging events at 200,000 frames per second, and high speed digital image acquisition capable of 2 million frames per second.
Consultant, Kevin Kennedy Associates Inc.
Providing aeronautics engineering consulting, materials science consulting, aerospace materials consulting, fracture mechanics consulting, crack propagation consulting, failure analysis, forensic engineering, and related expertise to a wide variety of clients.
Professor, major university
Specialization in Aeronautics Engineering, Materials Science
Professor, University of Houston, Houston, TX
Visiting Scholar, University of Texas at Austin, TX
AFOSR Summer Faculty Research Associate, Edwards AFB, CA
Guest Scientist, IZFP, Saarbrucken, Germany
Associate Professor, University of Houston, Houston, TX
Assistant Professor, University of Houston, Houston, TX
Research Fellow, California Institute of Technology, CA
Graduate Teaching Assistant, California Institute of Technology, CA
PROPOSAL AND PAPER REVIEW
Air Force Office of Scientific Research
AIAA Journal
AIAA - Journal of Spacecraft and Rockets
American Ceramic Society
American Society for Testing and Materials (ASTM)
American Chemical Society - Petroleum Research Fund
Army Research Office
Austrian Science Fund
Europhysics Letters
Experimental Mechanics
International Gas Turbine Institute
International Journal of Computational and Engineering Sciences
International Journal for Numerical Methods in Engineering
International Journal of Fracture
International Journal of Solids and Structures
Israel Science Foundation
Journal of Adhesion
Journal of Applied Mechanics (ASME)
Journal of Applied Physics
Journal of Cold Regions Engineering (ASCE)
Journal of Engineering Materials and Technology (ASME)
Journal of the Mechanics and Physics of Solids
Journal of Plasticity
Journal of Polymer Science Physics Edition
J.R. Rice Anniversary Volume
McGraw Hill Publishers
Mathematics and Mechanics of Solids
Mechanics of Advanced Materials and Structures
Mechanics of Materials
Mechanics of Time Dependent Materials
National Aeronautics and Space Administration
National Science Foundation (Division of Civil and Mechanical Systems, Mechanics and Materials Program, Division of Materials Research: Ceramics Program Metals Program, SBIR Program Electronic Packaging, Division of International Programs)
Optics and Lasers in Engineering
South Carolina EPSCoR Program
US-Israel Binational Science Foundation
US Department of State
GRANTS AND CONTRACTS
An experimental facility for fracture mechanics
Quasi-static experiments on branched cracks, Research Initiation Grant
Stable Crack Growth
Dynamic fracture under mixed mode loading
Stress field near a crack tip: An experimental study of the three dimensional variation
Superconducting ceramics and their composites
Ceramic to Metal Joining
Mechanical Behavior of Polycarbonate
Superconducting ceramics and bulk applications
Fracture of Ice
Directional solidification of YBCO wires
Fracture of solid propellants
Fracture characterization in inelastic polymers
High Tc wires for current lead applications
Fracture of solid propellants
Nondestructive measurement of impact toughness of aircraft windshields
Mixed-mode fracture in solid propellants
Development of nanoscale grains for extrusion processing of YBCO wires
Development of small grains for bulk processing of YBCO and BSCCO wires
Modeling of fracture and fragmentation, UH Energy Laboratory
Development of small grains for bulk processing of YBCO and BSCCO wires
Strain rate dependence of mixed-mode fracture of solid propellants
Temperature dependence of mixed-mode fracture of solid propellants
Development of small grains for bulk processing of YBCO and BSCCO wires
Shear banding and shear failure in polycarbonate
Development of enabling technologies for reconfigurable uninhabited air vehicles
Acquisition of surface-characterizing equipment, DURIP program
Development of small grains for bulk processing of YBCO and BSCCO wires
A fundamental investigation into the deformation and failure behavior of heterogeneous materials with the aim of developing design guidelines
Near-net shape fabrication of high current density YBCO slabs
Dynamic behavior and shock absorption properties of shape memory alloys
Acquisition of apparatus for multiaxial experiments in composites
Inelastic behavior of polymers under multiaxial compression
Three dimensional visualization of damage in cellular solids and composites.
Growth of three dimensional cracks
Mechanical behavior of metals subjected to short duration heat pulses
Mechanical behavior of metals subjected to short duration heat pulses
Mesoscale friction in the presence of electric currents
Collaborative Research: Physics based modeling and simulation of post-mastectomy breast reconstruction
Experimental characterization of the nonlinear viscoelastic and adhesive properties of elastomers
Mechanical behavior of metals subjected to short duration heat pulses
Design optimization and characterization of helicoidal composites with enhanced impact resistance
Acquisition of apparatus for characterization of dynamic failure in composites
Mechanics of impact resistant polymer coatings
CONSULTING ACTIVITIES
Reliability analysis of a float-zone furnace for space flight rating
stress analysis of the mvi-1g training chair
Lifetime assessment of hot-section pipes
Pressure testing of storm shutters and blinds
Design of a pipe storage/transportation system for gas
Evaluation of cured-in-place piping
Thermal fatigue cracking in coatings
Failure investigation of an automobile wheel.
Failure analysis of an aluminum ladder
Headbolt failure investigation
Shear strength of pultruded composite I-Beams
Evaluation of the mechanical response of stents for vascular applications
Impact strength of tungsten carbide tool bit materials
Holds multiple U.S. and European patents on the subject of fabrication of superconducting wires and rods, method for fabricating superconducting wires, and the determination of the adhesion strength of HVOF coatings by spherical indentation.
Author of numerous publications, papers, addresses, lectures on topics including dynamic fracture, dynamic loading and crack arrest, dynamic crack tip stresses under stress wave loading, crack initiation and crack arrest, microstructural aspects, steady state crack propagation and branching, interaction of stress waves with propagating cracks , experimental evaluation of three-dimensional effects, characterization of the transient stress field near the tip of a crack, constitutive behavior of polycarbonate under large deformations, failure mode transitions in polycarbonate under dynamic mixed-mode loading, dynamics of brittle fracture, microcracks in the dynamic fracture of brittle materials, dynamic fracture of nominally brittle materials, inelastic deformation in polymers under multiaxial loading, wrinkling of a thin elastic sheet under tension, dynamic loading of polycrystalline shape memory alloy rods, interaction of stress waves with propagating cracks, liquid infiltration and seeded growth process, pressure-diameter relationship, aortic stent elastic foundation model, viscoelastic characterization of polymers under multiaxial compression, the mechanical behavior of conductors exposed to short-duration thermal loading, dynamic crack response to a localized shear pulse perturbation in brittle amorphous materials, helicoidal composite, nanoscale damage during fracture in silica glass, forced motion of flexible strings , dynamics of brittle fracture, dynamic fracture under shear loading, dynamic shear crack propagation, dynamic fracture of brittle materials , physical aspects of dynamic fracture , experiments on dynamic slip, response of dynamic cracks to large perturbations, dynamics of phase transformations in niti alloys, photomechanics in dynamic fracture and fracture, dynamic stress intensity factor, experiments in dynamic crack propagation, dynamic fracture of brittle solids, mechanics of dynamic fracture, on crack tip stress state, crack growth in polymers, numerical simulation of transient crack growth, scattered light photoelasticity, dynamic fracture of polymeric materials, fracture of polymers, dominance of the singular crack tip stress-field in propagating cracks, failure mechanisms and failure mechanics, measurement of crack tip field parameters, crack tip field parameters, effect of higher order terms on the methods of caustics and photoelasticity, and more.