[Neutron] ORNL - Postdoctoral Research Associate - Crystal Plasticity Based Finite Element Modeling / NB50520590

[McCormick, B. Logan]

ORNL Publications
External Publication
Job Posting Title
Postdoctoral Research Associate - Crystal Plasticity Based Finite Element Modeling / NB50520590
Posted Date

10/12/2015
End Posting Date
10/30/2015

Purpose
The Neutron Sciences Directorate (NScD) at Oak Ridge National Laboratory (ORNL) operates the High Flux Isotope Reactor (HFIR), the United States' highest flux reactor based neutron source, and the Spallation Neutron Source (SNS), the world's most intense pulsed accelerator based neutron source. Together these facilities operate 30 instruments for neutron scattering research, each year carrying out in excess of 1,000 experiments in the physical, chemical, materials, biological and medical sciences for more than 3,000 visiting scientists. HFIR also provides unique facilities for isotope production and neutron irradiation. To learn more about Neutron Sciences at ORNL go to http://neutrons.ornl.gov.<http://neutrons.ornl.gov/>
Purpose
The Chemical and Engineering Materials Division of the NScD at Oak Ridge National Laboratory is seeking motivated candidates for a postdoctoral research associate position in crystal plasticity based finite element modeling and analysis of neutron diffraction experiments. The successful candidate will join an interdisciplinary research team with expertise in neutron scattering, advanced manufacturing and modeling. This person will also have the opportunity to collaborate with VULCAN and CG-1D beamlines, and will make use of ORNL High Performance Computing (HPC) resources when the research interests are aligned. In addition to world leading facilities for neutron diffraction studies, ORNL is home to the most powerful supercomputer for open science (www.olcf.ornl.gov).

Major Duties/Responsibilities

-Work with computational scientists, neutron scattering scientists and other core project team members to develop a state-of-the-art modeling/simulation capability for general users by using the unique HPC and neutron facilities of ORNL.
-Develop computational tools to extract neutron diffraction relevant quantities from mesoscale crystal plasticity based finite element simulations.
- Extend the computational capability to the interpretation of residual stress measurements of parts made by additive manufacturing (AM).
- Create user-friendly interface to the new computational capabilities.
- Assist in performing neutron imaging and diffraction studies at the various world-class instruments at the SNS and HFIR.
- Publish research results in scientific journals.

Physical requirements for this job include the use of hand and eye protection gear, kneeling, sitting for extended periods of time, extensive work at chemical laboratories, and possible exposure to ionization radiation normally associated with operation of neutron scattering instruments for scientific research.
Other responsibilities include:

Ensure compliance with environment, safety, health and quality program requirements.

Maintain strong commitment to the implementation and perpetuation of values and ethics.
Qualifications Required

Candidates with a recent Ph.D. in Physics, Materials Science, Engineering, or related fields will be considered. Familiarity with the finite element method (FEM), modeling of elastic and plastic deformation of structural alloys, and micro mechanics models for small and finite strain deformations including crystal plasticity theory is required. Expertise in metallurgy and material deformation behaviors is required. Strong written and oral communication skills and the desire to work in a team environment on scientifically challenging problems are required. Applicants must have received their PhD within five years of this application and must complete all degree requirements before starting their appointment.
Certain exceptions may be considered. This position is a temporary, full-time assignment of 24 months.

Employment is contingent upon the results of a drug screen which must be administered and cleared before employment can begin.
Qualifications desired:
Preference will be given to those candidates with experience in engineering diffraction and analyzing neutron and/or X-ray imaging and/or diffraction data. Knowledge in additive manufacturing is preferred. Experience in time-of-flight neutron diffraction and imaging techniques is preferred. Knowledge of C++, Fortran, and other programming languages and experience with developing and running simulations using parallel computing resources is preferred.
This position will remain open for a minimum of 5 days after which it will close when a qualified candidate is identified and/or hired.

We accept Word(.doc, .docx), Excel(.xls, .xlsx), PowerPoint(.ppt, .pptx), Adobe(.pdf), Rich Text Format(.rtf), HTML(.htm,
.hmtl) and text files(.txt) up to 2MB in size. Resumes from third party vendors will not be accepted; these resumes will be deleted and the candidates submitted will not be considered for employment.

If you have trouble applying for a position, please email ORNLRecruiting at ornl.gov.<mailto:ORNLRecruiting at ornl.gov>

Notice:  If the position requires a Security Clearance, reviews and tests for the absence of any illegal drug as defined in 10
CFR 707.4 will be conducted by the employer and a background investigation by the Federal government may be required to obtain an access authorization prior to employment and subsequent reinvestigations may be required.

If the position is covered by the Counterintelligence Evaluation Program regulations at 10 CFR 709, a counterintelligence evaluation may include a counterintelligence-scope polygraph examination.

ORNL is an equal opportunity employer. All qualified applicants, including individuals with disabilities and protected
veterans, are encouraged to apply. UT-Battelle is an E-Verify Employer.

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