Journal ArticleDOI
Second reflections and spall formation in solid perspex spheres due to point explosive loading in air
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In this article, an attempt has been made to explain the form and the location of the spalls in terms of stress wave optics considering first and second reflections of the incident waves at the spherical boundary and the energy distribution of incident waves when reflected from this boundary.About:
This article is published in International Journal of Impact Engineering.The article was published on 1989-01-01. It has received 2 citations till now. The article focuses on the topics: Explosive material & Spall.read more
Citations
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A consolidation mechanism for the compaction of copper powder at high pressures
A.G. Mamalis,G.N. Gioftsidis +1 more
TL;DR: In this paper, a plane shock wave of high pressure (about 100 kbar) is employed for producing thin rectangular plates near to their net-shape from spherical copper powder particles using a multi-die configuration.
Journal ArticleDOI
Energy distribution and associated fracture phenomena when explosively loading paraboloidal‐ended perspex rods embedded in lead and air
TL;DR: In this paper, an attempt has been made to explain the form and the location of the terminal internal fractures and the spalls in terms of stress optics considering first and second reflections of the incident waves at the interfacial boundary and the energy distribution of incident waves when reflected from a boundary or refracted into the surrounding medium.
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Fracture development in solid perspex spheres with short cylindrical projections (bosses) due to point explosive loading
Wendy Johnson,A.G. Mamalis +1 more
TL;DR: In this article, the authors examined fracture and void development in Perspex spheres with bosses (i.e., with cylindrical projections) due to point explosive loading by a detonator using high speed photography.
Journal ArticleDOI
Internal Fractures in Spheres Due to Stress Wave Focusing
TL;DR: In this article, the locations and times of occurrence of internal fractures in Perspex spheres subjected to localized explosive loading are investigated, and an analysis of stress wave reflection from free boundaries based on the method of geometrical acoustics is found to give predictions which are in good agreement with results obtained from high speed photographs.
Journal ArticleDOI
Crack patterns in cylinders explosively loaded at an hemispherical end
TL;DR: In this paper, the final crack and fracture damage found in hemispherically-ended "Perspex" (PMMA) rods loaded explosively by electrical detonators at their hemispherical end is described.
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Fracturing of paraboloidal-ended Perspex rods explosively loaded in air and salt water
TL;DR: In this paper, crack and fracture damage in paraboloidal-ended cylindrical rods of Perspex due to stress waves initiated by explosive point loading at the flat end of a rod with a detonator is discussed and the controlling mechanisms are considered.