Abstract
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.
Original language | English |
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Pages (from-to) | 33061-33071 |
Number of pages | 11 |
Journal | Proceedings of the National Academy of Sciences of the United States of America |
Volume | 117 |
Issue number | 52 |
DOIs | |
State | Published - Dec 2020 |
Funding
ACKNOWLEDGMENTS. This work was supported by the US Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Office, via the Advanced Combustion Engine Systems program. This research used resources at the SNS, a DOE Office of Science User Facility, and the NTRC, a DOE Office of Energy Efficiency and Renewable Energy User Facility, both operated by ORNL. The research on AlCe alloys was sponsored by the Critical Materials Institute, an Energy Innovation Hub funded by the DOE, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office and Eck Industries. This work was performed under the auspices of the DOE with ORNL under contract DE-AC05-00OR22725. We acknowledge the contributions of Steven Whitted at ORNL, who performed the modification and packaging of the engine for operation in the diffractometer. This manuscript has been authored by UT-Battelle, LLC, under Contract DE-AC05-00OR22725 with the US DOE. The US Government retains and the publisher, by accepting the article for publication, acknowledges that the US Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US Government purposes. The DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (energy.gov/downloads/doe-public-access-plan). Support for DOI 10.13139/ORNLNCCS/1728670 dataset is provided by the US Department of Energy, project IPTS-18431 under Contract DE-AC05-00OR22725. Project IPTS-18431 used resources of the Oak Ridge Leadership Computing Facility at Oak Ridge National Laboratory, which is supported by the Office of Science of the US Department of Energy under Contract No. DE-AC05-00OR22725.
Keywords
- In situ
- Internal combustion engine
- Neutron diffraction
- Operando
- Time-resolved
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Lattice strain and other supporting data from operando neutron diffraction study of a Honda GX200 engine with an Al-Ce cylinder head
Wissink, M. (Creator), Chen, Y. (Creator), Frost, M. (Creator), Curran, S. (Creator), Rios, O. (Creator), Sims, Z. C. (Creator), Weiss, D. (Creator) & An, K. (Creator), Constellation by Oak Ridge Leadership Computing Facility (OLCF), Dec 7 2020
DOI: 10.13139/ORNLNCCS/1728670
Dataset