Neutron Transmission Strain Measurements on IMAT: Residual Strain Mapping in an AlSiCp Metal Matrix Composite

Neutron Transmission Strain Measurements on IMAT: Residual Strain Mapping in an AlSiCp Metal Matrix Composite

R.S. Ramadhan, W. Kockelmann, A.S. Tremsin, M.E. Fitzpatrick

Neutron transmission strain measurements were performed for the first time at the IMAT beamline, ISIS, UK, in order to demonstrate the capability and measure the accuracy of the new instrument. A novel Bragg edge strain analysis technique based on cross correlation is introduced as an alternative to a Bragg edge fitting technique. Neutron transmission measurements were performed on an AlSiCp metal matrix composite, and the result is compared with the neutron diffraction result on an identical sample, showing good agreement between the two. The advantage of using the proposed cross correlation Bragg edge strain analysis technique over edge fitting is discussed.

Keywords
Neutron Transmission, Residual Strain, Strain Mapping, Metal Matrix Composite

Published online 4/20/2018, 6 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: R.S. Ramadhan, W. Kockelmann, A.S. Tremsin, M.E. Fitzpatrick, ‘Neutron Transmission Strain Measurements on IMAT: Residual Strain Mapping in an AlSiCp Metal Matrix Composite’, Materials Research Proceedings, Vol. 4, pp 149-154, 2018

DOI: http://dx.doi.org/10.21741/9781945291678-23

The article was published as article 23 of the book

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] T. Minniti, W. Kockelmann, G. Burca, J.F. Kelleher, S. Kabra, S.Y. Zhang, D.E. Pooley, E.M. Schooneveld, Q. Mutamba, J. Sykora, N.J. Rhodes, F.M. Pouzols, J.B. Nightingale, F. Aliotta, L.M. Bonaccorsi, R. Ponterio, G. Salvato, S. Trusso, C. Vasi, A.S. Tremsin and G Gorini, Materials analysis opportunities on the new neutron imaging facility IMAT@ISIS, J. Inst. 11 (2016)
[2] M.E. Fitzpatrick, M.T. Hutchings and P.J. Withers, Separation of macroscopic, elastic mismatch and thermal expansion misfit stresses in metal matrix composite quenched plates from neutron diffraction measurements, Acta Mater. 45 (1997) 4867–4876. https://doi.org/10.1016/S1359-6454(97)00209-7
[3] J.R. Santisteban, L. Edwards, A. Steuwer and P.J. Withers, Time-of-flight neutron transmission diffraction, J. Appl. Crystallogr. 34 (2001) 289–297. https://doi.org/10.1107/S0021889801003260
[4] A.S. Tremsin, J.B. McPhate, W. Kockelmann, J.V. Vallerga, O.H.W. Siegmund and W.B. Feller., Energy-Resolving neutron transmission radiography at the isis pulsed spallation source with a high-resolution neutron counting detector, IEEE Trans. Nucl. Sci. 56 (2009) 2931–2937. https://doi.org/10.1109/TNS.2009.2029690
[5] J.R. Santisteban, L. Edwards, M.E. Fitzpatrick, A. Stwuwer, P.J. Withers, M.R. Daymond, M.W. Johnson, N. Rhodes and E.M. Schooneveld, Strain imaging by Bragg edge neutron transmission, Nucl. Instruments Methods Phys. Res. A. 481 (2002) 765–768. https://doi.org/10.1016/S0168-9002(01)01256-6
[6] A.S. Tremsin, T.Y. Yau and W. Kockelmann, Non-destructive Examination of Loads in Regular and Self-locking Spiralock ® Threads through Energy- resolved Neutron Imaging, Strain. 52 (2016) 548–558. https://doi.org/10.1243/0309324021514844
[7] M.R. Daymond, M.W. Johnson and D.S. Sivia, Analysis of neutron diffraction strain measurement data from a round robin sample, J. Strain Anal. 37 (2002) 73–85. https://doi.org/10.1243/0309324021514844