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John J.Tierney

Research Associate

109 Composites Manufacturing Science Laboratory
University of Delaware
Newark, DE 19716-3144
Phone: (302) 831-0548 | Fax: (302) 831-8525
Email: tierney@ccm.udel.edu

Research Interests: Composite materials, simulation and design of composites manufacturing processes, experimental mechanics, fracture mechanics, residual stress and warpage analysis, joining, induction lamination, automated tow placement, fusion bonding, software development for composite manufacturing processes.

Executive Summary

Currently conducting on ongoing research program on design and manufacture of composite overwrapped gun barrels for the U.S. Army. Other areas of work include design and optimization of a continuous induction based lamination processes for carbon based thermoplastics, development of generic design tools for composite cylinder analysis, heat transfer and quality development in the Automated Tow Placement process and development of new processes for manufacturing composite based structures.

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Education

Ph.D. University of Delaware, 2003.
B.E. (mech) University College Galway, Ireland 1994.

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Professional Activities

Journal Reviewer: Journal of Thermoplastic Composite Materials, Composites: Part (A), and Journal of Composite Materials.

Center for Composite Materials Spring research review organizer.

President of University of Delaware’s International Student Organization: The Cosmopolitan Club 1999-2000

Member of Engineering Society of Ireland.

Member of American Society of Materials, American Society of Composites.

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Awards & Patents

Center for Composite Materials Achievement Award 1998.

University of Delaware Honors Award 1998.

University of Delaware Event Activities Award in 1999 for organization of international events at the University

"Process for Induction Lamination of Electrical Conductive Fiber Reinforced Thermoplastic". Date of Invention: 08/16/1999. Filed for patent application. 07/24/01. Approved 09-20-02.

"Apparatus for Induction of Electrically Conductive Fiber Reinforced Thermoplastic". Date of Invention: 08/16/1999. Filed for patent application. 07/24/01. Approved 09-20-02.

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Books and Book Chapters

Tierney, J. J., J. W. Gillespie Jr., and P-E. Bourban, “Joining of Composites,” Chapter in Volume 2, Polymer-Matrix Composites, Comprehensive Composite Materials, Pergamon, Elsevier Science Limited, 2001.

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Recent Journal Publications

John Tierney, J. W. Gillespie Jr., “Modeling of Heat Transfer and Void Dynamics for the Thermoplastic Composite Tow Placement Process”, accepted, Journal of Composite Materials, Technomic Pub. Co. 2003

John Tierney, J. W. Gillespie Jr., “Modeling of In-Situ Strength Development for the Thermoplastic Composite Tow Placement Process”, to appear, Journal of Composite Materials, Technomic Pub. Co. 2003

John Tierney, J. W. Gillespie Jr., “Crystallization Kinetics Behavior of PEEK Based Composites Exposed to High Heating and Cooling Rates:, to appear, Composites Part (A), Elsevier Publishing Co. 2003

Heider D., Tierney, J. J., Michael J. Piovoso, and John W. Gillespie Jr., “Artificial Neural Network Modeling of the Automated Thermoplastic Composite Tow-Placement system” in Journal of Materials Processing and Manufacturing Science, Vol. 7 No. 4 pp. 360-379, 1999.

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Recent Conference Papers

Tierney, J. J. Yarlagadda, S., Shevchenko, N., D. Heider, Gillespie, J. W Jr., “Rapid Automated Induction Lamination (RAIL) of Carbon/Thermoplastic Laminates: Process Optimization and Prove-out”, Accepted for SAMPE/JEC Europe Conference, Paris March 2000.

Tierney, J. J. Yarlagadda, S., Shevchenko, N., D. Heider, Gillespie, J. W Jr., “Rapid Automated Induction Lamination (RAIL) of Carbon/Thermoplastic Laminates: Factory Implementation and Prove-Out”, Accepted for SAMPE/JEC Japan Conference, 2001.

Tierney, J. J., Heider D., J. W. Gillespie Jr., N. B. Shevchenko, B. K. Fink, “Rapid Automated Induction Lamination (R.A.I.L) for High-Volume Production of Carbon/Thermoplastic Laminates,” Proc. SAMPE-ACCE-DOE-SPE, MidWest Advanced Materials and Processing Conference, Sept 12-14, Dearborn, MI, 2000, pp 393-402.

Tierney, J. J., S. Quirico, and J. W. Gillespie, Jr. Development of Material Quality during the Automated Tow Placement Process, American Society for Composites 13th Annual Technical Conference, Baltimore, Maryland 1998.

Tierney, J. J., Gillespie J. W. Jr. "Control of Warpage and Residual Stresses during the Automated Tow Placement Process" 43rd International SAMPE Symposium/Exhibition 1998 Anaheim, CA.

Tierney, J. J., Gillespie, J. W. Jr. "Control of Warpage and Residual Stresses during the Automated Tow Placement Process" ANTEC'98 Atlanta GA.

Tierney, J. J., D. Heider, R. C. Don, K. Steiner. J. W. Gillespie. "Welding of Thermoplastic Composites using the Automated Tow Placement Process: Modeling and Control" ANTEC’97, Toronto Ontario.

Tierney, J. J., Rushad F. Eduljee, J. W. Gillespie. " Residual Stress and Warpage Development during the Automated Tow Placement Process". Proceedings of the 11th Technical Conference on Composites, American Society for Composites, Atlanta, Georgia. 1996.

Tierney, J. J., Rushad F. Eduljee, J. W. Gillespie. "Material Response during Robotic Tow Placement of Thermoplastic Composites". Society of Automotive Engineers/ Engineering Society of Detroit. Detroit, Michigan, 1995.

Tierney J. J, J. W. Gillespie. "Process Quality and Dynamics in the Automated Tow Placement Process". Proceedings from the Annual Composites Symposium, University of Delaware, 1995.

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Executive
Summary
Education
Professional
Activities
Awards &
Patents
Books & Book
Chapters
Recent
Journal
Papers
Recent
Conference
Papers
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