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Local Shock Properties Measurement Using Time-Resolved Raman Spectroscopy

Authors :
Dhiman Abhijeet
Lewis Nolan S.
Olokun Ayotomi
Tomar Vikas
Source :
EPJ Web of Conferences, Vol 250, p 01023 (2021)
Publication Year :
2021
Publisher :
EDP Sciences, 2021.

Abstract

In this article, the dynamic response of a heterogeneous microstructure of polymer bonded composite was analyzed to a short duration shock pulse. The composite microstructure studied is a polymerbonded sugar (PBS) with single-crystal sucrose embedded inside the polydimethylsiloxane binder. The shock pulse was created by the impact of the aluminum disk at high speeds using a laser-based projectile launch system. The mechanical response on the microscale domain was measured using ultrafast time-resolved Raman spectroscopy. The in-situ analysis of the change in Raman spectra from PBS during shock compression was captured in the time domain using a streak camera. The results show a steeply rising shock front after the impact where the shock pressure rise time was estimated from the time-resolved Raman spectra. The viscoplastic behavior in the local microscale domain was characterized by quantifying effective shock viscosity measured in the vicinity of the crystal-binder interface.

Subjects

Subjects :
Physics
QC1-999

Details

Language :
English
ISSN :
2100014X
Volume :
250
Database :
Directory of Open Access Journals
Journal :
EPJ Web of Conferences
Publication Type :
Academic Journal
Accession number :
edsdoj.437bcd61066f40cda79bd84f6b029da8
Document Type :
article
Full Text :
https://doi.org/10.1051/epjconf/202125001023