Sökning: "Explosives"

Visar resultat 1 - 5 av 41 avhandlingar innehållade ordet Explosives.

1. 1. Post-Detonation Afterburning of High Explosives

   Författare :Katja Fedina; Strömningsteknik; []
   Nyckelord :Explosives; Combustion; LES; Finite rate chemistry; Explosives; Combustion; LES; Finite rate chemistry; Height of Burst;

   Sammanfattning : High performance of an explosive compound with respect to afterburning requires sufficient combustible properties of the explosive, and a careful determination of the most appropriate charge positioning to achieve the desired afterburning effect. Understanding the physical processes of post-detonation afterburning and how these are affected by the surroundings, e. LÄS MER

3. 2. Experiments with and modelling of explosively driven mangetic flux compression generators

   Författare :Patrik Appelgren; Nils Brenning; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Magnetic Flux Compression; Explosives; Pulsed Power; Circuit Simulations; Hydrodynamic simulations; Electrophysics; Elektrofysik;

   Sammanfattning : This thesis presents work performed on explosively driven magnetic flux compression generators. This kind of devices converts the chemically stored energy in a high explosive into electromagnetic energy in the form of a powerful current pulse. LÄS MER

4. 3. Nitration of Oxo-pyramidines and Oxo-imidazoles

   Författare :Abraham Langlet; Christina Moberg; Jan Bakke; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; explosives; gem-Dinitro compounds; Dinitromethane; Nitroform; Organic chemistry; Organisk kemi;

   Sammanfattning : This thesis is mainly focused on the reactions of oxo-pyrimidines and oxo-imidazoles with nitric acid in sulfuric acid and properties of the gem-dinitro products formed in this process. Low temperature nitrations of 2-methylimidazoles produced – in addition to the known 2-methyl-5(4)-nitroimidazole – 2-(dinitromethylene)-5,5-dinitro-4-imidazolidinone and parabanic acid. LÄS MER

5. 4. Excavation damage from blasting with emulsion explosives : Quality control and macro fracturing in the remaining rock

   Författare :Henrik Ittner; Håkan Schunnesson; Daniel Johansson; Radoslava Ivanova; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gruv- och Berganläggningsteknik; Mining and Rock Engineering;

   Sammanfattning : Excavation damage is usually regulated in Swedish infrastructure tunnel contracts as it can influence the quality and lifecycle cost for tunneling projects. The topic is important for underground constructions with a long operation period such as tunnels for public transport, permanent access tunnels in mines or underground repositories for nuclear waste. LÄS MER

7. 5. Pressure desensitization of ANFO and emulsion explosives

   Författare :Shulin Nie; KTH; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER