William J. Kelly, PE
Manager of General Engineering Analysis

Mr. Kelly has a BS in Engineering Science from Penn State University and an MS degree in Mechanical Engineering from Florida Atlantic University.  He is a professional engineer with over 20 years of diverse experience in the analysis and design of mechanical and biomechanical components.  His primary expertise is 3D nonlinear finite element analysis and solid modeling.  He has worked in a number of fields in his various positions, including automotive (General Motors), aerospace (ADAPCO), civil engineering (W. Kelly & Associates), and orthopedics (Howmedica/Stryker).  He has continued to work in these areas during his tenure at MSI, along with spending a significant portion of his time performing stress and vibration analysis and testing on all types of rotating machinery.

Much of Mr. Kelly's career has been in the orthopedic industry.  While working for a leading orthopedic implant manufacturer he made significant contributions to the design and development of several medical devices.  He is a holder of several patents on novel hip replacement and spinal fusion/motion-preserving implants.  Mr. Kelly has used finite element analysis extensively to predict the strength and behavior of metal and plastic implantable devices including artificial hip and knee replacements, fracture fixation devices, spinal fusion devices, and cardiovascular stents.  Many of these analyses have required the modeling of highly nonlinear behavior including contacting bodies, plasticity, large deflections and large strains.  Manufacturers have often submitted his finite element work to the FDA in an effort to demonstrate the structural integrity of the designs, and to shorten their time-to-market.  He has also been invited to the operating room to consult on surgical techniques.