Timothy Lucas
Timothy R. Lucas, Ph.D.
Senior Engineer
Materials & Corrosion Engineering
  • Hong Kong

Dr. Lucas specializes in failure analysis, corrosion, metallurgy, material deformation and fracture, and material characterization. Dr. Lucas has experience in design, fabrication, and operation of unique experimental facilities as well as CNC machining and rapid prototyping.

Prior to joining Exponent, Dr. Lucas researched the effects of nuclear reactor environments and radiation flux on materials and in-situ surface coating techniques. For his Ph.D. thesis, he examined the effects of thermal aging on stainless steel welds in nuclear reactor environments. The emphasis was on understanding the impact of weld metal chemistry, thermal aging, and boiling water reactor primary chemistry on the material properties and resistance to stress corrosion and cracking of Type 316L welds. For his master’s work, Dr. Lucas investigated the radiation and reactor chemistry impact on the use of nanofluids for increasing the margin to critical heat flux in a post-reactor accident scenario. Additionally, Dr. Lucas has iteratively designed and built several experimental facilities for pool boiling, single and two-phase flow, environmental simulation, material irradiation, and neutron diffraction and serviced irradiation facilities in nuclear reactors. 

Dr. Lucas has extensive operating experience in military and research nuclear reactors. He served on submarines in the US Navy as a reactor operator, completing several strategic deterrent patrols, as well as participating in refueling and overhaul. Following the navy, he worked as a senior reactor operator and instrumentation technician for the MIT Nuclear Reactor Laboratory where he performed frequent refuelings, irradiation facility operation and upgrade, as well as maintenance of reactor instrumentation and control equipment. 

Additionally, Dr. Lucas completed a 3.5-year global circumnavigation on his own 40-foot sailing boat.

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Nuclear Science and Engineering, Massachusetts Institute of Technology (MIT), 2011
  • M.S., Nuclear Science and Engineering, Massachusetts Institute of Technology (MIT), 2008
  • B.S.A.S.T., Nuclear Engineering Technology, Thomas Edison State College, 2004

Publications

Lucas T, Forsström A , Saukkonen T, Ballinger RG, Hänninen H, Effects of Thermal Aging on Material Properties, Stress Corrosion Cracking, and Fracture Toughness of AISI 316L Weld Metal, Metallurgical and Materials Transactions A, 2016 August, 3956-3970, 47(8).

Lucas T, Ballinger RG, Saukonen T, Hanninen H. Effect of thermal aging on SCC. Material Properties and Fracture Toughness of Stainless Steel Weld Metals, 15th international Conference on Environmental Degradation of Materials in Nuclear Power Systems, 2012.

Ayers LJ, Lucas TR, Ballinger RG. The effect of thermal aging on hardness of stainless steel welds. Transactions of the American Nuclear Society, 2011.

Lucas T. The effect of thermal aging and boiling water reactor environment on Type 316L stainless steel welds. PhD Thesis, MIT, Cambridge MA, 2011.

Boungiorno J, Hu LW, Apostolakis G, Hannick R, Lucas T, Chupin A. A feasibility assessment of the use of nanofluids to enhance the in-vessel retention capability in light-water reactors. Nuclear Engineering and Design 2009 May; 239(5).

Lucas T. Study of chemistry and irradiation effects on nanofluids to be used in light water reactor accident cooling. S.M. Thesis, MIT, Cambridge, MA, 2008.

Lucas T, Hu LW, Boungiorno J. Investigation of gamma radiation on nanofluids for nuclear applications. Transactions of the American Nuclear Society, 2007.

Maro J, Lucas T, Hu LW, Bernard J. Deployment of a web enabled neutron spectrometer. Transactions of the American Nuclear Society, 2006. 


CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Nuclear Science and Engineering, Massachusetts Institute of Technology (MIT), 2011
  • M.S., Nuclear Science and Engineering, Massachusetts Institute of Technology (MIT), 2008
  • B.S.A.S.T., Nuclear Engineering Technology, Thomas Edison State College, 2004