Picture of Derek Warner

Derek H. Warner

Professor
Civil and Environmental Engineering
Hollister Hall, Room 373
607/255-7155
Associate Director of Civil and Environmental Engineering and Director of Undergraduate Studies
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Biography

Derek Warner joined the School of Civil and Environmental Engineering in October 2007. Prior to this he was a Postdoctoral Research Associate in the Division of Engineering at Brown University, where he worked in the Mechanics of Solids Group. He completed his Ph.D. in Mechanical Engineering at Johns Hopkins University in 2006. During the 2013 and 2020 academic years, Derek was a Visiting Professor at the École polytechnique fédérale de Lausanne in Switzerland.

Research Interests

Derek is the director of the Cornell Fracture Group. For the majority of his academic career, he has worked with the US Navy to illuminate and model the underlying mechanisms that control the failure of structural materials, with the ultimate objective of advancing the capability to predict the deformation and failure of structures by utilizing new knowledge and modeling techniques. Since 2013 Derek has worked with the Navy to better understand and predict the performance of additively manufactured metallic components. His toolset includes: long timescale atomistic techniques (FTS, TIS), atomistic to continuum concurrent multiscale techniques (QM-CADD), the utilization of machine learning interatomic potentials, micromechanical modeling (large deformations, remeshing, microstructural modeling), and component scale fabrication, post processing, and failure modeling with probabilistic frameworks and FRANC3D crack growth software. He has directed and analyzed X-ray CT, EBSD, confocal laser microscopy, and fatigue testing.

Research Group Members

Teaching Interests

Solid Mechanics, Nonlinear Finite Element Analysis, Additive Manufacturing for Load Bearing Applications, Deformation and Failure Mechanisms, Scientific Supercomputing

Service Interests

Director of Undergraduate Studies in Civil Engineering, Chair of College Common Curriculum Governing Board, Junior Faculty Mentor

Selected Publications

  • W. Gu, D.H. Warner, “Dissolution at a Ductile Crack Tip.” Physical Review Letters 127 (2021), p. 146001
  • TP Moran, DH Warner, N Phan, “Scan-by-Scan Part-Scale Thermal Modelling for Defect Prediction in Metal Additive Manufacturing.” Additive Manufacturing (2020), p. 101667
  • P Li, DH Warner, N Phan, “Predicting the Fatigue Performance of an Additively Manufactured Ti-6Al-4V Component from Witness Coupon Behavior.” Additive Manufacturing (2020), p. 1012303
  • S Saroukhani, D.H. Warner. “Investigating dislocation motion through a field of solutes with atomistic simulations and reaction rate theory.” Acta Materialia 128 (2017), p. 77-86
  • Aghababaei, R., D H. Warner, J F Molinari.  2016. "Critical length scale controls adhesive wear mechanisms.."  Nature communications: 11816-11816.

Selected Awards and Honors

  • James and Mary Tien Excellence in Teaching Award, 2019
  • Professor of the Year (Chi-Epsilon Honor Society, Cornell Chapter), 2012
  • Most Valuable Professor (Cornell Undergraduate ASCE Superlative), 2012
  • U.S. Junior Oberwolfach Fellow, 2012
  • Presidential Early Career Award, 2009
  • Mathematics Department Award, Saint Francis University, 2002

Education

  • BS (Mathematics), Saint Francis University, 2002
  • MS (Solid Mechanics), Johns Hopkins University, 2004
  • Ph D (Mechanical Engineering), Johns Hopkins University, 2006

Websites

Research Group Members

Graduate Students