“Ammonal”—A New High Explosive

A Candidate of New Insensitive High Explosive; MTNI

1-methyl-2,4,5-trinitroimidazole (MTNI; 1) was reinvestigated and fully characterized as a promising candidate of new insensitive high explosives. Compound 1 was synthesized from the imidazole (2), via 5 step reactions. According to our preliminary sensitivity tests, 1 was almost as insensitive as TNT. The explosive performances, i.e. detonation velocity, and C-J pressure, were evaluated theore...

A new approach to predict of mechanical properties at the interface of Aluminium/Copper explosive cladding by explosive scarf welding

Abstract: The purpose of this study is to produce scarf joint through explosive welding process (EXW). The scarf weld is a process in which the final bond interface is oblique. With applying the explosive welding technique, this joint can create a metallic bond between similar or dissimilar metals. In this study, chamfered end of aluminum and copper plates were joined explosively and named scar...

Explosive Techniques for High Altitude Metal Releases

High explosive simulation using multi-material formulations

The accurate numerical simulation of air-blast is an industrial concern. Because the experimental investigation of these fast transient events is expensive and time-consuming, several numerical approaches of air explosion are carried out. In this paper, an airblast simulation is described using Eulerian multi-material formulation. In order to validate the numerical approach and prove its abilit...

Explosive radiation in high Andean Hypericum—rates of diversification among New World lineages

The páramos, high-elevation Andean grasslands ranging from ca. 2800 m to the snow line, harbor one of the fastest evolving biomes worldwide since their appearance in the northern Andes 3-5 million years (Ma) ago. Hypericum (St. John's wort), with over 65% of its Neotropical species, has a center of diversity in these high Mountain ecosystems. Using nuclear rDNA internal transcribed spacer (ITS)...