Sarah Easley
Sarah K. Easley, Ph.D., P.E.
Managing Engineer
Mechanical Engineering
  • Menlo Park

Dr. Easley specializes in solid mechanics, biomechanics, finite element analysis (FEA), and mechanics of materials. Dr. Easley has extensive experience performing numerical analyses of consumer electronics and medical devices. Her doctoral research at the University of California, Berkeley focused on using microstructural imaging, experimental testing, and computational analysis to understand the relationship between bone structure and bone strength and the effects of disease and treatment on that relationship. Her earlier graduate work focused on design and analysis of orthopaedic biomedical devices.

Prior to joining Exponent, Dr. Easley worked as an intern at DePuy Orthopaedics in the Research and Development department. During her time there, she developed FEA-based surgical-planning software tools for predicting kinematic performance of knee replacement devices. She also has experience using shop equipment such as lathes and milling machines, and participated in the design and fabrication of a robot for the national F.I.R.S.T. competition.

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Mechanical Engineering, University of California, Berkeley, 2010
  • M.S., Mechanical Engineering, University of Denver, 2004
  • B.S., Computer Engineering, University of Denver, 2001, honors
  • Outstanding Graduate Student Instructor Award, 2008

    Berkeley College of Engineering Fellowship, 2005–2006

    University of Denver Alumni Scholar, 1997–2001

    Stanley Cibrowksi Foundation Award for Engineering Excellence, 1997–2001

LICENSES & CERTIFICATIONS

Licensed Professional Mechanical Engineer, California, #36388

LANGUAGES

  • French

Publications

Easley SK, Jekir MG, Burghardt AJ, Li M, Keaveny TM. Contribution of the intra-specimen variations in tissue mineralization to PTH- and raloxifene-induced changed in stiffness of rat vertebrae. Bone 2010; 46:1162–1169.

Bevill G, Easley SK, Keaveny TM. Side-artifact errors in yield strength and elastic modulus for human trabecular bone and their dependence on bone volume fraction and anatomic site. Journal of Biomechanics 2007; 40:338–3388.

Easley SK, Pal S, Tomaszewski PR, Petrella AJ, Rullkoetter PJ, Laz PJ. Finite element-based probabilistic analysis tool for orthopaedic applications. Computer Methods and Programs in Biomedicine 2007; 85:32–40.

Halloran JP, Easley SK, Petrella AJ, Rullkoetter PJ. Comparison of deformable and elastic foundation finite element simulations for predicting knee replacement mechanics. Journal of Biomechanical Engineering 2005; 127:813-818.

Selected Presentations and Published Abstracts

Easley SK, Jekir MG, Lu G, Torello D, Li M, Keaveny TM. Lack of effect of ovariectomy and PTH treatment on the biomechanical material properties of bone tissue in rat vertebrae. 31st Annual Meeting of the American Society for Bone and Mineral Research, Denver, CO, 2009.

Easley SK, Jekir MG, Burghardt AJ, Li M, Keaveny TM. Effects of PTH and raloxifene on tissue mineralization and vertebral stiffness in rats. 55th Annual Meeting of the Orthopaedic Research Society, Las Vegas, NV, 2009.

Easley SK, Shindich D, Hernandez CJ, Keaveny TM. Effects of resorption cavities on strength of trabecular bone. 30th Annual Meeting of the American Society for Bone and Mineral Research, Montréal, Canada, 2008.

Easley SK, Jekir MG, Bennett CG, Li M, Keaveny TM. Effect of PTH and raloxifene on cortical and trabecular microstructure, cortical-trabecular load sharing, and tissue material properties of whole rat vertebrae. 54th Annual Meeting of the Orthopaedic Research Society, San Francisco, CA, 2008.

Easley SK, Jekir MG, Kazakia GJ, Majumdar S, Keaveny TM. Role of tissue mineralization, as measured by micro-CT, on apparent and effective tissue elastic moduli of human trabecular bone. 53rd Annual Meeting of the Orthopaedic Research Society, San Diego, CA, 2007.

Easley SK, Rullkoetter PJ. Efficient finite element model prediction of TKR constraint. 52nd Annual Meeting of the Orthopaedic Research Society, Chicago, IL, 2006.

Easley SK, Tomaszewski PR, Petrella AJ, Rullkoetter PJ, Laz PJ. Effect of dimensional variability on hip stem reliability. 7th World Biomaterials Congress, Sydney, Australia, 2004.

Penmetsa J, Easley SK, Petrella AJ, Rullkoetter PJ. Creep of UHMWPE acetabular cups during gait loading. 50th Annual Meeting of the Orthopaedic Research Society, San Francisco, CA, 2004.

Halloran J, Easley SK, Penmetsa J, Laz PJ, Petrella AJ, Rullkoetter PJ. Efficient dynamic finite element rigid body analysis of TJR. American Society of Mechanical Engineers Summer Bioengineering Conference, Key Biscayne, FL, 2003.

Penmetsa J, Easley SK, Petrella AJ, Rullkoetter PJ. Effect of head size, clearance, and poly thickness on creep of acetabular cups. 29th Meeting of the Society for Biomaterials, 2003.


Prior Experience

Research Intern, DePuy Orthopaedics, 2004

Technology Intern, Accenture, 2000

Professional Affiliations

American Society of Mechanical Engineers (member)

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Mechanical Engineering, University of California, Berkeley, 2010
  • M.S., Mechanical Engineering, University of Denver, 2004
  • B.S., Computer Engineering, University of Denver, 2001, honors
  • Outstanding Graduate Student Instructor Award, 2008

    Berkeley College of Engineering Fellowship, 2005–2006

    University of Denver Alumni Scholar, 1997–2001

    Stanley Cibrowksi Foundation Award for Engineering Excellence, 1997–2001

LICENSES & CERTIFICATIONS

Licensed Professional Mechanical Engineer, California, #36388

LANGUAGES

  • French