Operando measurement of lattice strain in internal combustion engine components by neutron diffraction
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- Energy Science and Technology Directorate, Oak Ridge National Laboratory, Oak Ridge, TN 37831,
- Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN 37831,
- Physical Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN 37831,, Department of Materials Science and Engineering, The University of Tennessee, Knoxville, TN 37996,
- Physical Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN 37831,, The Bredesen Center for Interdisciplinary Research and Graduate Education, The University of Tennessee, Knoxville, TN 37996,
- Eck Industries, Inc., Manitowoc, WI 54220,
- Physical Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN 37831,, US Navy, Washington, DC 20350
Engineering neutron diffraction can nondestructively and noninvasively probe stress, strain, temperature, and phase evolutions deep within bulk materials. In this work, we demonstrate operando lattice strain measurement of internal combustion engine components by neutron diffraction. A modified commercial generator engine was mounted in the VULCAN diffractometer at the Spallation Neutron Source, and the lattice strains in both the cylinder block and head were measured under static nonfiring conditions as well as steady state and cyclic transient operation. The dynamic temporal response of the lattice strain change during transient operation was resolved in two locations by asynchronous stroboscopic neutron diffraction. We demonstrated that operando neutron measurements can allow for understanding of how materials behave throughout operational engineering devices. This study opens a pathway for the industrial and academic communities to better understand the complexities of material behavior during the operation of internal combustion engines and other real-scale devices and systems and to leverage techniques developed here for future investigations of numerous new platforms and alloys.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1742079
- Alternate ID(s):
- OSTI ID: 1787233; OSTI ID: 1808407
- Journal Information:
- Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Vol. 117 Journal Issue: 52; ISSN 0027-8424
- Publisher:
- Proceedings of the National Academy of SciencesCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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