Thesis-1979-Dirwish.pdf (3.06 MB)
The dynamic mechanical characteristics of visco-elastic materials at high rates of loading using cylindrical shock waves initiated by an exploding hire
thesis
posted on 2018-10-29, 11:57 authored by Mohammed E. DirwishA study of the properties of visco-elastic materials has
been made by observing their response to large amplitude stress
waves propagated in cylindrical specimens. The experimental work
has been concerned with the production of shock waves resulting
from exploding a wire inside a hollow cylinder; the propagation
of these waves radially outwards within the cylindrical specimen
and the response of the material to this loading. The explosion
produced by discharging a high voltage (20–40 kV) capacitor across the ends of the wire creates a high intensity shock wave
which propagates radially outwards towards the cylinder wall.
Radial symmetry is to be expected in this case and the strong
cylindrical blast waves which are produced have been studies by
optical methods, mainly the schlieren technique using a high-speed
image converter camera. The results obtained of the position and
velocity of the shock front as a function of time show a remarkably
good agreement with results of the blast wave theory for a
cylindrical shock wave. [Continues.]
Funding
Iraq, Ministry of Higher Education.
History
School
- Science
Department
- Physics
Publisher
© M.E. DirwishPublisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
1979Notes
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.Language
- en