APS March Meeting 2010
Volume 55, Number 2
Monday–Friday, March 15–19, 2010;
Portland, Oregon
Session V5: Industrial Applications of Neutron Scattering
8:00 AM–11:00 AM,
Thursday, March 18, 2010
Room: Portland Ballroom 256
Sponsoring
Units:
DCMP FIAP
Chair: Michael Crawford, DuPont
Abstract ID: BAPS.2010.MAR.V5.3
Abstract: V5.00003 : Residual Stress Analysis for Industry Using Neutron Scattering at Oak Ridge National Laboratory
9:12 AM–9:48 AM
Preview Abstract
Abstract
Author:
Camden R. Hubbard
(Materials Science and Technology Division, Oak Ridge National Laboratory)
Oak Ridge National Laboratory is home for two of the highest flux
neutron sources in the world: the High Flux Isotope Reactor,
HFIR, and the Spallation Neutron Source, SNS. Two engineering
materials science instruments have been built - NRSF2 at HFIR
began operation in 2006 and VULCAN at SNS began commissioning in
late 2009. The instrument at HFIR is called NRSF2 as it is the
2nd generation Neutron Residual Stress mapping Facility. It is
primarily used for high spatial resolution diffraction mapping of
residual stresses throughout the thickness of samples and for
measurement of material behavior during in situ and/or real-time
processes.
NRSF2 is extensively used by industry as well as academia for
non-destructive stress and phase mapping through thickness of
actual components as well as mock-ups. designed for testing FEA
models of processes. Examples of studies from the vehicle
technologies industry and nuclear power industry conducted at
NRSF2 will be presented. These include studies of stresses due
to welding, heat-treating, casting, and metal forming. Many
strain/stress mapping studies at NRSF2 are used to optimize
materials processes such as welding or to test validity of FEA
models. Examples of industrial projects with Caterpillar on
changes in weld metal to improve fatigue life, John Deere to test
and validate casting models, Metalsa-Roanoke to characterize
stress distribution about holes in steel vehicle frames, and EPRI
to test and validate models of residual stresses about dissimilar
metal welds. Industry-University collaborations have used the
mapping facilities to study in situ such phenomena as the state
of charge in Li-ion batteries and the critical bend stress in
gears as a function of loading.
Three different collaborative routes are available to industry
to use NRSF2: the HTML User Program, which is sponsored by
DOE-EERE-Vehicle Technologies; DOE Cooperative Research and
Development Agreements (CRADAs); and industry sponsored projects.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.MAR.V5.3