Imperial College London
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ProfessorDavidDye

Faculty of Engineering, Department of Materials

Professor of Metallurgy
 
 
 
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Contact

 

+44 (0)20 7594 6811david.dye

 
 
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Location

 

1.09GoldsmithSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Coakley:2020:10.1126/sciadv.abb4434,
author = {Coakley, J and Higginbotham, A and McGonegle, D and Ilavsky, J and Swinburne, TD and Wark, JS and Rahman, KM and Vorontsov, VA and Dye, D and Lane, TJ and Boutet, S and Koglin, J and Robinson, J and Milathianaki, D},
doi = {10.1126/sciadv.abb4434},
journal = {Science Advances},
pages = {1--10},
title = {Femtosecond quantification of void evolution during rapid material failure},
url = {http://dx.doi.org/10.1126/sciadv.abb4434},
volume = {6},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Understanding high velocity impact, and the subsequent high strain rate material deformation and potential catastrophic failure, is of critical importance across a range of scientific and engineering disciplines that include astrophysics, materials  science  and  aerospace  engineering.   The  deformation  and  failure mechanisms  are  not  thoroughly  understood,  given  the  challenges  of  experimentally quantifying material evolution at extremely short time-scales.  Here, copper foils are rapidly strained via picosecond laser ablation and probed in situ with femtosecond x-ray free electron (XFEL) pulses.  Small angle x-ray scattering (SAXS) monitors the void distribution evolution while wide angle scattering (WAXS) simultaneously determines the strain evolution.  The ability to quantifiably characterize the nanoscale during high strain rate failure with ultrafast-SAXS, complementing WAXS, represents a broadening in the range of science that can be performed with XFEL. It is shown that ultimate failure occurs via void nucleation, growth and coalescence, and the data agree well with molecular dynamics simulations.
AU  - Coakley,J
AU  - Higginbotham,A
AU  - McGonegle,D
AU  - Ilavsky,J
AU  - Swinburne,TD
AU  - Wark,JS
AU  - Rahman,KM
AU  - Vorontsov,VA
AU  - Dye,D
AU  - Lane,TJ
AU  - Boutet,S
AU  - Koglin,J
AU  - Robinson,J
AU  - Milathianaki,D
DO  - 10.1126/sciadv.abb4434
EP  - 10
PY  - 2020///
SN  - 2375-2548
SP  - 1
TI  - Femtosecond quantification of void evolution during rapid material failure
T2  - Science Advances
UR  - http://dx.doi.org/10.1126/sciadv.abb4434
UR  - https://advances.sciencemag.org/content/6/51/eabb4434
UR  - http://hdl.handle.net/10044/1/84951
VL  - 6
ER  -
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