{"id":{"repo_id":"ttu","oai_identifier":"oai:ttu-ir.tdl.org:2346/16675"},"canonical_url":"https://search.dev.ndltd.org/etd/ttu/oai:ttu-ir.tdl.org:2346/16675","repository":{"repo_id":"ttu","name":"Texas Technology University","base_url":"https://ttu-ir.tdl.org/server/oai/request"},"display":{"title":"Ignition and combustion behaviors of nano-composite energetic materials","abstract":"Advances in material processing have created nano-sized fuel particles with enhanced properties ideal for exothermic reactions compared with those of larger particles of the same material. As a result the combustion associated with nano-scale particles has recently shown the potential for enhanced energetic behavior of thermites. In this study, the ignition sensitivity of an aluminum molybdenum-trioxide (AI/M0O3) composite mixture was examined. Laser ignition experiments were performed to determine the ignition time and burn rates of newly developed nano-Al mixed with M0O3. The scope of this work can best be summarized in two stages: first, the ignition time and bum rates for three nano-regime Al mixtures were studied over a varied composition range, the results were then used to further study ignition time and bum rate as a function of Al particle diameter, which ranged from 17.4 nm to 20 µm at the optimum stoichiometric composition. A 50-W CO2 laser provided the ignition source and high-speed digital images were used to determine ignition time and bum rates. Results indicate that a slightly fuel rich (equivalence ratio of 1.2) mixture presents the earliest ignition times and fastest burn rates for the nano Al particle diameters. Experiments using a slightly fuel rich mixture for ten Al particle diameters show an increased sensitivity to ignition with decreasing particle size, a decreased bum rate with decreasing particle size and less variability of ignition times and burn rates for nano-regime Al.","abstract_html":"Advances in material processing have created nano-sized fuel particles with enhanced properties ideal for exothermic reactions compared with those of larger particles of the same material. As a result the combustion associated with nano-scale particles has recently shown the potential for enhanced energetic behavior of thermites. In this study, the ignition sensitivity of an aluminum molybdenum-trioxide (AI/M0O3) composite mixture was examined. Laser ignition experiments were performed to determine the ignition time and burn rates of newly developed nano-Al mixed with M0O3. The scope of this work can best be summarized in two stages: first, the ignition time and bum rates for three nano-regime Al mixtures were studied over a varied composition range, the results were then used to further study ignition time and bum rate as a function of Al particle diameter, which ranged from 17.4 nm to 20 µm at the optimum stoichiometric composition. A 50-W CO2 laser provided the ignition source and high-speed digital images were used to determine ignition time and bum rates. Results indicate that a slightly fuel rich (equivalence ratio of 1.2) mixture presents the earliest ignition times and fastest burn rates for the nano Al particle diameters. Experiments using a slightly fuel rich mixture for ten Al particle diameters show an increased sensitivity to ignition with decreasing particle size, a decreased bum rate with decreasing particle size and less variability of ignition times and burn rates for nano-regime Al.","abstract_has_math":false,"creators":["Granier, John Joseph"],"institution":"Texas Tech University","degree_name":"M.S.M.E.","degree_level":"Masters","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2003,"date_issued":"2003-05","date_published":"2003-05","updated_at":"2026-07-24T05:04:53Z","subjects":["Combustion -- Measurement","Nanostructured materials -- Mechanical properties"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2346/16675","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Granier, John Joseph"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2011-02-18T21:40:05Z"]},{"key":"dc:date.issued","label":"Date","values":["2003-05"]},{"key":"dc:publisher","label":"Institution","values":["Texas Tech University"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S.M.E."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Texas Tech University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Combustion -- Measurement","Nanostructured materials -- Mechanical properties"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/2346/16675"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Advances in material processing have created nano-sized fuel particles with enhanced properties ideal for exothermic reactions compared with those of larger particles of the same material. As a result the combustion associated with nano-scale particles has recently shown the potential for enhanced energetic behavior of thermites. In this study, the ignition sensitivity of an aluminum molybdenum-trioxide (AI/M0O3) composite mixture was examined. Laser ignition experiments were performed to determine the ignition time and burn rates of newly developed nano-Al mixed with M0O3. The scope of this work can best be summarized in two stages: first, the ignition time and bum rates for three nano-regime Al mixtures were studied over a varied composition range, the results were then used to further study ignition time and bum rate as a function of Al particle diameter, which ranged from 17.4 nm to 20 µm at the optimum stoichiometric composition. A 50-W CO2 laser provided the ignition source and high-speed digital images were used to determine ignition time and bum rates. Results indicate that a slightly fuel rich (equivalence ratio of 1.2) mixture presents the earliest ignition times and fastest burn rates for the nano Al particle diameters. Experiments using a slightly fuel rich mixture for ten Al particle diameters show an increased sensitivity to ignition with decreasing particle size, a decreased bum rate with decreasing particle size and less variability of ignition times and burn rates for nano-regime Al."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Ignition and combustion behaviors of nano-composite energetic materials"]}]}],"canonical_facts":{"dc:creator":["Granier, John Joseph"],"dc:date.available":["2011-02-18T21:40:05Z"],"dc:date.issued":["2003-05"],"dc:description.abstract":["Advances in material processing have created nano-sized fuel particles with enhanced properties ideal for exothermic reactions compared with those of larger particles of the same material. As a result the combustion associated with nano-scale particles has recently shown the potential for enhanced energetic behavior of thermites. In this study, the ignition sensitivity of an aluminum molybdenum-trioxide (AI/M0O3) composite mixture was examined. Laser ignition experiments were performed to determine the ignition time and burn rates of newly developed nano-Al mixed with M0O3. The scope of this work can best be summarized in two stages: first, the ignition time and bum rates for three nano-regime Al mixtures were studied over a varied composition range, the results were then used to further study ignition time and bum rate as a function of Al particle diameter, which ranged from 17.4 nm to 20 µm at the optimum stoichiometric composition. A 50-W CO2 laser provided the ignition source and high-speed digital images were used to determine ignition time and bum rates. Results indicate that a slightly fuel rich (equivalence ratio of 1.2) mixture presents the earliest ignition times and fastest burn rates for the nano Al particle diameters. Experiments using a slightly fuel rich mixture for ten Al particle diameters show an increased sensitivity to ignition with decreasing particle size, a decreased bum rate with decreasing particle size and less variability of ignition times and burn rates for nano-regime Al."],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["http://hdl.handle.net/2346/16675"],"dc:language.iso":["eng"],"dc:publisher":["Texas Tech University"],"dc:subject":["Combustion -- Measurement","Nanostructured materials -- Mechanical properties"],"dc:title":["Ignition and combustion behaviors of nano-composite energetic materials"],"dc:type":["Thesis"],"thesis:degree_discipline":["Mechanical Engineering"],"thesis:degree_level":["Masters"],"thesis:degree_name":["M.S.M.E."],"thesis:institution_name":["Texas Tech University"]},"updated_at":"2026-07-24T05:04:53Z"}