Patrick Tibbits Email & Phone Number

Science Fiction novels, general fiction short stories.Very occasional poetry, inflicted on those I dislike.

Davenport, Iowa

Finite element (ANSYS) and closed-form calculation of stress and strain levels, prognostication of failure probabilities under overload, fatigue, and fracture. Calculation of free-surface fuel sloshing by potential flow theory.

Algorithmic development for life prediction for mechanical components.

Diagnosis and remediation of fatigue, overload, corrosion failures through chemical, metallurgical, and dimensional analysis, microscopy, and electron microscopy.

ANSYS stress, modal, and random vibration analyses of spacecraft assemblies. Modeling of bearing/shaft/support systems. Derivation of statistical significance of stresses from combined random vibration and static loadings.

Finite Element analysis, failure analysis, corrosion diagnostics and prevention, metallurgy, Scanning Electron Microscopy

+ Developed & patented an improved cam follower bearing.+ Contact Mechanics & Rolling Contact Fatigue :1) Applied new life theory. Appointed to ABMA subcommittee on life calculation. 2)Derived stresses in tapered roller thrust bearings.3)Derived fatigue life for linear bearings. 4) supported the A. B. Jones bearing analysis program+ ANSYS Finite Element Analyses 1. Redesigned a product line for a major customer. Co-inventor on patent.2. Developed numerically efficient FEA of roller/raceway contact. a) Optimized bearing design in a universal joint. Won 3rd place in design competition, published.b) Predicted performance of crowned vs uncrowned cam followers. Published.c) Modeled cam follower, planetary gear and various other bearings for customer applications. Published.d) Optimized tapered roller thrust bearings for customer application. Presented to ANSYS user's conference. Applied for patent. e) Predicted ball bearing life effects of pillow block deformation. Presented to ASME 3. Modeled nonlinear behavior of cast iron. Showed stress concentrations in a bearing pillow block design caused failures attributed to casting defects. Predicted fracture loads of gray cast iron pillow blocks. 4. Modeled nonlinear material, large deformation & contact of elastomer seals.5. Optimized stress concentrating holes in a controlled fracture. Implemented this solution to a problem of many years standing.6. Simulated unsteady temperature fields .+ Took over a problematic test program. Designed & acquired a rigid, high capacity aircraft bearing test machine. Tested bearings to save a large contract.+ Acquired and applied SEM & X-Ray Spectrometer1. Failure Analysis 2. characterized materials and coatings.3. Identified contaminants in lubricants.4. Published in Microscopy Today + potentiostatic evaluation of corrosion+ vibration analysis + metallurgical image analysis .+ Administered tribology research at Northwestern University.

Alexandria, Virginia

+ Assessed effectiveness of shipboard logistics programs + Monte Carlo simulation of operations + Assessed effects of new technology on aviation support

Ph.D., Materials Science

Education record

Bachelor Of Science - Bs, Metallurgical Engineering