Dept of Aeronautics and Astronautics
Email: Marina Ruggles-Wrenn
PhD - Mechanical Engineering, Rensselaer Polytechnic Institute, 1987
MS - Mechanics, Rensselaer Polytechnic Institute, 1983
BS - Mechanical Engineering, Polytechnic Institute of New York, 1981
Dr. Ruggles-Wrenn’s interests center on mechanics of materials and structures, including experimental investigation of time-dependent material behavior, high-temperature structural materials, advanced composite materials, viscoplasticity, and high-temperature structural design methods. Dr. Ruggles-Wrenn has published over 90 journal articles and technical reports, and has co-authored 7 books on fatigue, fracture, and high temperature structural design methods. Dr. Ruggles-Wrenn received several research and best paper awards as well as the Col. Gage H. Crocker Outstanding Professor Award. Prior to joining AFIT Dr. Ruggles-Wrenn was a research staff member at the Oak Ridge National Laboratory (1987-2003). Dr. Ruggles-Wrenn is a member of the Editorial Board of Applied Composite Materials. She is also currently serving as an associate technical editor of the ASME Journal of Pressure Vessel Technology and has served in that capacity previously (1996-2002). She currently chairs the ASME PVPD Design & Analysis Technical Committee and is a member of the ASME PVPD Executive Committee. Dr. Ruggles-Wrenn is a member of The American Ceramic Society and a Fellow of the ASME.
STRUCTURAL MECHANICS
STRUCTURES AND MATERIALS
Recent Publications
M. B. Ruggles-Wrenn and T. P. Jones, "Tension-Compression Fatigue Behavior of a SiC/SiC Ceramic Matrix Composite at 1200 °C in air and in steam", International Journalof Fatigue, in press.
J. Armani, M. B. Ruggles-Wrenn, G. E. Fair and R. S. Hay, "Creep of NextelTM 610 Fiber at 1100°C in Air and in Steam", International Journal of Applied Ceramic Technology, in press.
M. B. Ruggles-Wrenn and G. Kurtz, “Notch Sensitivity of Fatigue Behavior of a Hi-Nicalon™/SiC-B4C Composite at 1200 °C in Air and in Steam”, Applied Composite Materials, in press.
C. E. C. Ryther and M. B. Ruggles-Wrenn, “The Rate (Time) – Dependent Mechanical Behavior of the PMR-15 Thermoset Polymer at Temperatures in the 274-316 °C Range: Experiments and Modeling ”, Journal of Pressure Vessel Technology, Transactions ASME, in press.
M. B. Ruggles-Wrenn, J. Delapasse, A. L. Chamberlain, J. E. Lane, and T. S. Cook, “Fatigue behavior of a Hi-Nicalon™/SiC-B4C composite at 1200 °C in air and in steam”, Materials Science and Engineering A, Vol. 534, 2012, pp. 119-128.
M. B. Ruggles-Wrenn, D. T.Christensen, A. L. Chamberlain, J. E. Lane,and T. S. Cook, “Effects of Frequency and Environment on Fatigue Behavior of a CVI SiC/SiC Ceramic Matrix Composite at 1200 °C”, Composites Science andTechnology, Vol. 71, No. 2, 2011, pp. 190-196.
M. B. Ruggles-Wrenn and V. Sharma, “Effects of Steam Environment on Fatigue Behavior of Two SiC/[SiC+Si3N4] Ceramic Composites at 1300 °C”, Applied Composite Materials,Vol. 18, No. 5,2011, pp. 385-396.
M. B. Ruggles-Wrenn and B. A. Whiting, “Cyclic Creep and Recovery Behavior of Nextel™720/Alumina Ceramic Composite at 1200°C”, Materials Science and Engineering A, Vol. 528, 2010, pp. 1848-1856.
M. B. Ruggles-Wrenn and T. Kutsal, “Effects of Steam Environment on Creep Behavior of Nextel™720/Alumina-Mullite Ceramic Composite at Elevated Temperature”, Composites Part A: Applied Science and Manufacturing, Vol. 41, 2010, pp. 1807-1816.
M. B. Ruggles-Wrenn and O. Ozmen, “The Rate (Time) – Dependent Mechanical Behavior of the PMR-15 Thermoset Polymer at 316 °C: Experiments and Modeling ”, Journal of Pressure Vessel Technology, Transactions ASME, Vol. 132, August 2010, pp. 041403-1 - 041403-6.
M. B. Ruggles-Wrenn and M. Ozer, “Creep Behavior of Nextel™720/Alumina-Mullite Ceramic Composite with ±45° Fiber Orientation at 1200 ºC”, Materials Science and Engineering A, Vol. 527, 2010, pp. 5326-5334.
M. B. Ruggles-Wrenn, T. Yeleser, G. E. Fair and J. B. Davis, “Effects of Steam Environment on Creep Behavior of Nextel™610/Monazite/Alumina Composite at 1100 ºC”, Applied Composite Materials, Vol. 16, No. 6, 2009, pp. 379-392.
A. J. W. McClung and M. B. Ruggles-Wrenn, “Effect of Prior Aging at 288 °C in Argon Environment on Time – Dependent Deformation Behavior of a Thermoset Polymer at Elevated Temperature. Part 1: Experiments”, Journal of Applied Polymer Science, Vol. 114, 2009, pp. 2956-2962.
A. J. W. McClung and M. B. Ruggles-Wrenn, “Effect of Prior Aging at 288 °C in Argon Environment on Time – Dependent Deformation Behavior of a Thermoset Polymer at Elevated Temperature. Part 2: Modeling with Viscoplasticity Theory Based on Overstress”, Journal of Applied Polymer Science, Vol. 114, 2009, pp. 3389-3395.
A. J. W. McClung and M. B. Ruggles-Wrenn, “Strain Rate Dependence and Short-Term Relaxation Behavior of a Thermoset Polymer at Elevated Temperature: Experiment and Modeling”, Journal of Pressure Vessel Technology, Transactions ASME, Vol. 131, June 2009, pp. 031405-1 - 0314050-08.
M. B. Ruggles-Wrenn and C. L. Genelin, “Effects of Environment on Creep Behavior of Nextel™720/Alumina-Mullite Ceramic Composite at 1200 ºC”, Composites Science and Technology, Vol. 69, No. 5, 2009, pp. 663-669.
C. M. Falcone and M. B. Ruggles-Wrenn, "Rate Dependence and Short-Term Creep Behavior of a Thermoset Polymer at Elevated Temperature", Journal of Pressure Vessel Technology, Transactions ASME, Vol. 131, February 2009, pp. 011403-1 - 011403-8.
M. B. Ruggles-Wrenn and J. L. Broeckert, “Effects of Prior Aging at 288 °C in Air and in Argon Environments on Creep Response of PMR-15 Neat Resin”, Journal of Applied Polymer Science, Vol. 111, No. 1, 2009, pp. 228-236.
M. B. Ruggles-Wrenn and N. R. Szymczak, “Effects of Steam Environment on Compressive Creep Behavior of Nextel™720/Alumina Ceramic Composite at 1200 °C”, Composites Part A: Applied Science and Manufacturing, Vol. 39, 2008, pp. 1829-1837.
M. B. Ruggles-Wrenn, P. Koutsoukos, S. S. Baek, “Effects of Environment on Creep Behavior of Two Oxide-Oxide Ceramic Matrix Composites at 1200 °C”, Journal of Materials Science, Vol. 43, No. 20, 2008, pp. 6734-6746.
M. B. Ruggles-Wrenn and J. C. Braun, “Effects of Steam Environment on Creep Behavior of Nextel™720/Alumina Ceramic Composite at Elevated Temperature”, Materials Science and Engineering A, Vol. 497, 2008, pp. 101-110.
A. J. W. McClung and M. B. Ruggles-Wrenn, “The rate (time) – dependent mechanical behavior of the PMR-15 thermoset polymer at elevated temperature”, Polymer Testing, Vol. 27, 2008, pp. 908-914.
M. B. Ruggles-Wrenn, A. T. Radzicki, S. S. Baek, K. A. Keller, “Effect of Loading Rate on the Monotonic Tensile Behavior and Tensile Strength of Oxide-Oxide Ceramic Matrix Composite at 1200 °C”, Materials Science and Engineering A, Vol. 492, No. 1-2, 2008, pp. 88-94.
M. B. Ruggles-Wrenn and P. D. Laffey, “Creep Behavior in Interlaminar Shear of Nextel™720/ Alumina Ceramic Composite at Elevated Temperature in Air and in Steam”, Composites Science and Technology, Vol. 68, No. 10-11, 2008, pp. 2260-2266.
M. B. Ruggles-Wrenn, G. T. Siegert, S. S. Baek, “Creep Behavior of Nextel™720/Alumina Ceramic Composite with ±45° Fiber Orientation at 1200 °C”, Composites Science and Technology, Vol. 68, No. 6, 2008, pp. 1588-1595.
M. B. Ruggles-Wrenn and J. G. Balaconis, “Some Aspects of the Mechanical Response of BMI 5250-4 Neat Resin at 191ºC: Experiment and Modeling”, Journal of Applied Polymer Science, Vol. 107, No. 3, 2008, pp. 1378-1386.
M. B. Ruggles-Wrenn, G. Hetrick, S. S. Baek, "Effects of Frequency and Environment on Fatigue Behavior of an Oxide-Oxide Ceramic Composite at 1200 °C", International Journal of Fatigue, Vol. 30, No. 3, 2008, pp. 502-516.
P. R. Jackson, M. B. Ruggles-Wrenn, S. S. Baek, K. A. Keller, “Compressive Creep Behavior of an Oxide-Oxide Ceramic Composite with Monazite Fiber Coating at Elevated Temperatures”, Materials Science and Engineering A, Vol. 454-455, 2007, pp. 590-601.
J. M. Mehrman, M. B. Ruggles-Wrenn, S. S. Baek, “Influence of Hold Times on the Elevated-Temperature Fatigue Behavior of an Oxide-Oxide Ceramic Composite in Air and in Steam Environment”, Composites Science and Technology, Vol. 67, No. 7-8, 2007, pp. 1425-1438.
M. B. Ruggles-Wrenn, S. S. Musil, S. Mall, K. A. Keller, “Creep-Rupture Behavior of NextelTM610/ Monazite/Alumina Composite at Elevated Temperatures”, Composites Science and Technology, Vol. 66, No. 13, 2006, pp. 2089-2099.
M. B. Ruggles-Wrenn, S. Mall, C. A. Eber, L. B. Harlan, “Effects of Steam Environment on High-Temperature Mechanical Behavior of NextelTM720/ Alumina (N720/A) Continuous Fiber Ceramic Composite”, Composites Part A: Applied Science and Manufacturing, Vol. 37, No. 11, 2006, pp. 2029-2040.