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Wilbert J. Austin
Professor and Department Chair
Ph.D., Lehigh University
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Department of Mechanical and Aerospace Engineering
Case Western Reserve University
10900 Euclid Avenue
Cleveland, OH 44106-7222
Phone: (216) 368-6442 Fax: (216) 368-3007
Email: clare.rimnac@case.edu
Visitors: Glennan Building, Room 418
Prof. Rimnac (Ph.D., Materials Science and Engineering, Lehigh University, 1983) joined the faculty of the School of Engineering at Case Western Reserve University in 1996. She is currently the Wilbert J. Austin Professor of Engineering in and the Department Chair of the Department of Mechanical and Aerospace Engineering. Prof. Rimnac also holds secondary appointments in Biomedical Engineering and Orthopaedics. Courses that are taught by Prof. Rimnac include: EMAE 372 Relation of Materials to Design; EMAE 480 Fatigue of Materials; and, EMAE 415 Musculoskeletal Biomechanics. Prior to her arrival at Case, Prof. Rimnac was a Research Scientist in the Department of Biomechanics at The Hospital for Special Surgery in New York City.
Prof. Rimnac’s research focuses on implant retrieval analysis, mechanical behavior and constitutive modeling of materials used in total joint replacements, and damage and fracture behavior of bone tissue. Her research is primarily funded by the NIH. Recent publications can be found in Biomaterials, The Journal of Bone and Joint Surgery, Journal of Orthopaedic Research, and Clinical Orthopaedics and Related Research.
Among other honors, Prof. Rimnac is the recipient of an AAOS Kappa Delta Award, two Hip Society Awards, and a Knee Society Award. She is a Deputy Editor for Research for the Journal of Bone and Joint Surgery and is a member of the Program Committee for the Orthopaedic Research Society.
Teaching
EMAE 480 Fatigue of Materials
EMAE 415 Introduction to Musculoskeletal Biomechanics
EMAE 372 Relation of Materials to Design
Research Interests
Mechanical Behavior of Materials in Joint Replacements
Damage and Fracture of Bone Tissue
Implant Retrieval Analysis
Links
Curriculum Vitae
Selected Files
Research Poster 2000
Research Poster 2001
Research Poster 2005
Research Poster 2006
Graduate Students
Ph.D. Students
Michael Sobieraj, M.S.: Constitutive modeling of UHMW polyethylenes (M.D./Ph.D. candidate, anticipated graduation of Ph.D., August 2007).
Ravi Varadarajan, M.S.: On the nature of static and cyclic fatigue crack growth in UHMW polyethylenes (Ph.D. awarded, January, 2007).
Malcolm Cooke: Rapid prototyping of resorbable skull implants (Ph.D. awarded, August, 2004).
Kirk Olsen: Fatigue failure of aircraft bolts (Ph.D. awarded, August 2004).
Ozan Akkus: The Relation of Microdamage to Fracture and Material Property Degradation in Human Cortical Bone Tissue (Ph.D. awarded, August 2000). Present position: Associate Professor, Bioengineering, Purdue University).
M.S. Students
Katy Lee: Hydrostatic stress effects on damage of cortical bone tissue (B.S./M.S. candidate, co-advisor with Prof. John Lewandowski, M.S. awarded, January, 2007).
Thomas Penoyar: Effect of microdamage and strain rate on the fracture resistance of human cortical bone (M.S. awarded, August, 2004).
Irebert Delgado, B.S.: Retirement-for-cause fatigue analysis of aircraft engine rotor disks (M.S. awarded, May, 2004).
Sara Gencur, B.S.: Fracture behavior of highly crosslinked UHMW polyethylenes (M.S. awarded, May, 2004).
Michael Sobieraj, B.S.: Constitutive modeling of UHMW polyethylene (M.S. awarded, January, 2004).
Allison Stawarz, B.S.: Short and long fatigue crack growth in bone (Case Prime Fellow, NSF Graduate Fellow, M.S. awarded, January 2001).
Rebecca Lehman Thomas, B.S.: Cyclic stability and constitutive modeling of UHMW polyethylene materials (M.S. awarded, January, 2001).
Eric Kolb, B.S.: A Finite Element Analysis of Design Factors Affecting Performance of Acetabular Components in Total Hip Arthroplasty (M.S. awarded, May 2000).
Gail Perusek, B.S.: Design and Test of an Extensometer for Global Measurement of Bone Strain Suitable for Use In Vivo in Humans (M.S. awarded, May 2000).
Matthew Collier, B.S.: Radiographic measurement methods to determine hip anteversion and wear in total hip replacements (M.S. awarded, January 2000).
Elizabeth Karla Dapp, B.S.: Effect of notch-preparation on the J-integral static fracture resistance of ultra high molecular weight polyethylene (M.S. awarded, January, 1999).
Patrick Dunlap, B.S.: Effect of resin type and sterilization Method on the fatigue crack propagation behavior of ultra high molecular weight polyethylene (M.S. awarded, January, 1998).
Sameer Rohatgi, B.S.: Failure analysis of MG I and II retrieved total knee replacements (M.S. awarded, January, 1998).
RESEARCH SUPPORT
National Institutes of Health (2005-2008)
2-R01 AR47192 (NIAMS)
Constitutive Model for Polyethylenes in Total Joint Replacements
Principal Investigator
National Institutes of Health (2005-2010)
2-R01 AR47904 (NIAMS)
Mechanics and Performance of Traceable UHMWPE Hip Implants
Principal Investigator at CWRU (sub-contract to Drexel, Steve Kurtz, P.I.)
Sulzer (2006-2009)
Mechanisms and Performance of Retrieved Joint Replacement Components
Co-Investigator (Victor Goldberg, P.I.)
Zimmer (2006-2009)
Investigation of In-Vivo Oxidation in Historical, Conventional, and Highly Crosslinked Knee Components
Co-Investigator (Matthew Kraay, P.I.)
Selected Publications
Bergström, J.S., Rimnac, C.M., Kurtz, S.M. (2005). "Molecular Chain Stretch is a Multiaxial Failure Criterion for Conventional and Highly Crosslinked UHMWPE." J. Orthop. Res. 23: 367-375.
Kurtz S.M., Rimnac, C.M., Hozack, W., Turner M.S., Marcolongo M., Goldberg V.M., Kraay M.J., Edidin, A.A. (2005). "Does Degradation of Gamma Sterilized Ultra-High Molecular Weight Polyethylene Liners Continue during Implantation?" J. Bone Joint Surg. 87A:815-823.
Taki, N., Seabold, J.S., Nalepka, J.L., Togawa, D., Goldberg, V.M., Rimnac, C.M., Greenfield, E.M. (2005). "Polyethylene and Titanium Particles Induce Osteolysis by Similar, Lymphocyte-Independent, Mechanisms." J. Orthop. Res. 23:376-83.
Sobieraj, M.C., Kurtz, S.M., Rimnac, C.M. (2005). "Notch Strengthening and Hardening Behavior of Conventional and Highly Crosslinked UHMWPE Under Applied Tensile Loading." Biomaterials 26:3411-3426.
Rimnac, C.M., Kurtz, S.M.: "Ionizing Radiation and Orthopaedic Prostheses (2005)." Nuclear Instruments and Methods in Physics Research, B 236:30-37.
Dean, D., Wolfe, M.S., Ahmad, Y.,Totonchi, A., Chen, J.E.-K., Fisher, J.P., Cooke, M.N., Rimnac, C.M., Lennon, D.P., Caplan, A., Topham, N.S., Mikos, A.G. (2005). "Effect of Transforming Growth Factor b2 on Marrow-Infused Foam Poly(Propylene Fumarate) Tissue-Engineered Constructs for the Repair of Critical-Size Cranial Defects in Rabbits." Cartilage Biomechanics 11:923-939.
Kurtz, S.M., Bergström, J.S., Rimnac, C.M. (2005). "Failure Property Distributions for Conventional and Highly Crosslinked Ultra-High Molecular Weight Polyethylenes." J. Biomed. Mater. Res. (Appl. Biomat.) 73:214-220.
Sobieraj, M.C., Kurtz, S.M., Rimnac, C.M. (2005). "Large Deformation Compression Induced Crystallinity Degradation of Conventional and Highly Crosslinked UHMWPEs." Biomaterials 26:6430-6439.
Kurtz, S.M., Mazzucco, D., Rimnac, C.M. Schroeder, D. (2006). "Anisotropy and Oxidative Resistance of Highly Crosslinked UHMWPE after Deformation Processing by Solid-state Ram Extrusion." Biomaterials 27:24-34.
Gencur, S.J., Kurtz, S.M., Rimnac, C.M. (2006). "Fatigue Crack Propagation Resistance of Conventional and Highly Crosslinked, Thermally Treated Ultra-High Molecular Weight Polyethylene." Biomaterials 27:1550-1557.
Akhavan, S., Matthiesen, M., Schulte L., Penoyar T., Rimnac, C.M., Goldberg V. (2006). "Clinical and Histological Performance of the Epoch Reduced Stiffness Femoral Stem." J. Bone Joint Surg. 88A:1308-1314.
Varadarajan, R. and Rimnac, C.M. (2006). "Compliance calibration for fatigue crack propagation testing of Ultra high molecular weight polyethylene." Biomaterials 27:4693-4697. |
