Ryan L. Karkkainen

Photo of Ryan L. Karkkainen

Ryan L. Karkkainen

Assistant Professor Mechanical and Aerospace Engineering Department
Work Phone: (305) 284-4097



Research Interests

Multi-scale modeling for material design, Dynamic finite element based micromechanics, Advanced textile composite materials, Nanoparticulate reinforced polymers, Metamaterials, Impact energy absorbing materials development, Structural batteries


    • University of Florida, Gainesville, FL, Ph.D. in Mechanical Engineering (2006)
    • University of Tennessee, Knoxville, TN, M.S. in Mechanical Engineering (2000)
    • Louisiana State University , Baton Rouge, LA, B.S. in Mechanical Engineering (1998)



    • Juried or Refereed Journal Articles or Exhibitions

      • Karkkainen, R. L., Lee, B. (2017).Investigation of In-Flight Shutdown of Turboprop Engine due to Electrical Discharge Damage. Journal of Failure Analysis and Prevention. https://doi.org/10.1007/s11668-018-0384-x
      • Karkkainen, R. L., Nygren, G., Lee, B. (2017).Failure Investigation of Pure Titanium Bleed Air Ducts in Jet Fighters. Engineering Fracture Mechanics. http://www.sciencedirect.com/science/article/pii/S0013794417303417
      • Karkkainen, R. L. (2015).Dynamic Micromechanical Modeling of Textile Composite Strength under Impact and Multi-Axial Loading. Composites Part B: Engineering, 83, 27-35.
      • McAuliffe, C., Karkkainen, R. L., Waisman, H. (2014).Numerical Modeling of Friction Stir Welded Aluminum Joints Under High Rate Loading. Finite Elements in Analysis and Design, 85(15), 18-Aug.
      • Karkkainen, R. L., Brandon, M. (2012).Dynamic Micromechanical Modeling of Textile Composites with Cohesive Interface Failure. Journal of Composite Materials, 46(18), 2203-2218.
      • Karkkainen, R. L., Yen, C. (2012).Dynamic Modeling for Rate Dependent and Mode Dependent Cohesive Interface Failure Analysis. Journal of Composite Materials, 46(18), 2193-2202.
      • Karkkainen, R. L., Jerome, T. (2009).Micromechanical Strength Modeling and Investigation of Stitch Density Effects on 3D-Orthogonal Composites. Journal of Composite Materials, 43(25), 3125-3142.
      • Karkkainen, R. L., Sankar, B., Tzeng, J. (2007).A Direct Micromechanical Approach Toward the Development of Quadratic Stress Gradient Failure Criteria for Textile Composites. Journal of Composite Materials, 8(41), 1917-1937.
      • Karkkainen, R. L., Sankar, B. (2007).Strength Prediction of Multi-Layer Plain Weave Textile Composites Using the Direct Micromechanics Method. Composites Part B, 38(7), 924-932.
      • Karkkainen, R. L., Sankar, B. (2006).A Direct Micromechanics Method for Analysis of Failure Initiation of Plain Weave Textile Composites. Composites Science and Technology, 66, 137-150.
    • Book Chapters

      • Karkkainen, R. L., Sankar, B., Jerome, T. (2013). Direct Micromechanical Failure Analysis of Textile Composites. Damage in Composites: Volume 5, ASC Series (pp. ). DESTech.
      • Karkkainen, R. L., Walter, T., Bujanda, A. (2013). Nano-Scale Investigation of Microstructural Phenomenon Contributing to Toughening of Nanoparticulate Reinforced Polymers. Dynamic Behavior of Materials: Volume 1 (pp. ). Springer Publishing.

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