{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/127271"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/127271","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Material study on the fragmentation of high explosive, hemispherical shells: Diagnostics techniques and results","abstract":"The student, Matthew Bielawski, submitted this Thesis for approval on 2024-12-10 at 12:26.","abstract_html":"The student, Matthew Bielawski, submitted this Thesis for approval on 2024-12-10 at 12:26.","abstract_has_math":false,"creators":["Bielawski, Matthew G"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Theoretical & Applied Mechans","degree_department":null,"school":null,"contributors":["Glumac, Nick G"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2024,"date_issued":"2024-12-12","date_published":"2024-12-12","updated_at":"2026-07-22T22:25:03Z","subjects":["High-speed Imaging","Spectral Analysis","Material Failure","Detonation Physics","Explosive Fragmentation Modeling","Energy Deposition","Blast Wave Propagation","High Explosives","Fragmentation","Hemispherical Shells","Explosive Materials","Diagnostics Techniques","Experimental Methods","Spectroscopy","Optical Measurements","Shock Wave Analysis","Explosive Testing","Fragment Dynamics","Material Characterization","Ballistic Analysis"],"languages":["eng","en"],"rights":["Copyright 2024 Matthew Bielawski"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/127271","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Glumac, Nick G"]},{"key":"dc:creator","label":"Author","values":["Bielawski, Matthew G"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2024-12-12","2024-12"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Theoretical & Applied Mechans"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["High-speed Imaging","Spectral Analysis","Material Failure","Detonation Physics","Explosive Fragmentation Modeling","Energy Deposition","Blast Wave Propagation","High Explosives","Fragmentation","Hemispherical Shells","Explosive Materials","Diagnostics Techniques","Experimental Methods","Spectroscopy","Optical Measurements","Shock Wave Analysis","Explosive Testing","Fragment Dynamics","Material Characterization","Ballistic Analysis"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng","en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2024 Matthew Bielawski"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/127271"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The student, Matthew Bielawski, submitted this Thesis for approval on 2024-12-10 at 12:26.","This Thesis was approved for publication on 2024-12-12 at 08:10.","DSpace SAF Submission Ingestion Package generated from Vireo submission #21508 on 2025-03-28 at 14:28:20","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms","The student, Matthew Bielawski, accepted the attached license on 2024-12-10 at 12:24.","This study explores the complex multi-physics phenomena present in high explosive environments, requiring the simultaneous solution of chemical kinetics and Navier-Stokes equations to accurately simulate the details of an explosive event. To validate computational models, simpler experiments are necessary. In this case, hemispherical high explosive shells were chosen as they offer a more manageable, less-dimensional problem for computational testing. The research involved a series of diagnostic techniques applied to 100g and 500g hemispherical explosive shells, focusing on measuring key parameters such as temperature and pressure during fireball expansion. These measurements provided critical insights into the dynamics of explosive events and helped refine the simulations. The study further evaluated the diagnostic techniques in different conditions to test their reliability and precision in characterizing the fireball's behavior. Additionally, metallic shells weighing 50g and 250g were incorporated into the experiments to investigate how fragments influenced the temperature, flow, and overall expansion of the fireball. The metallic fragments were key to understanding fragment distribution patterns and how they interact with the explosive environment. High-speed videography, X-ray burst imaging three-color pyrometry, time-resolved spectroscopy, and ballistic gel recovery are just several techniques that were tested in this test series."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Material study on the fragmentation of high explosive, hemispherical shells: Diagnostics techniques and results"]}]}],"canonical_facts":{"dc:contributor":["Glumac, Nick G"],"dc:creator":["Bielawski, Matthew G"],"dc:date":["2024-12-12","2024-12"],"dc:description":["The student, Matthew Bielawski, submitted this Thesis for approval on 2024-12-10 at 12:26.","This Thesis was approved for publication on 2024-12-12 at 08:10.","DSpace SAF Submission Ingestion Package generated from Vireo submission #21508 on 2025-03-28 at 14:28:20","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms","The student, Matthew Bielawski, accepted the attached license on 2024-12-10 at 12:24.","This study explores the complex multi-physics phenomena present in high explosive environments, requiring the simultaneous solution of chemical kinetics and Navier-Stokes equations to accurately simulate the details of an explosive event. To validate computational models, simpler experiments are necessary. In this case, hemispherical high explosive shells were chosen as they offer a more manageable, less-dimensional problem for computational testing. The research involved a series of diagnostic techniques applied to 100g and 500g hemispherical explosive shells, focusing on measuring key parameters such as temperature and pressure during fireball expansion. These measurements provided critical insights into the dynamics of explosive events and helped refine the simulations. The study further evaluated the diagnostic techniques in different conditions to test their reliability and precision in characterizing the fireball's behavior. Additionally, metallic shells weighing 50g and 250g were incorporated into the experiments to investigate how fragments influenced the temperature, flow, and overall expansion of the fireball. The metallic fragments were key to understanding fragment distribution patterns and how they interact with the explosive environment. High-speed videography, X-ray burst imaging three-color pyrometry, time-resolved spectroscopy, and ballistic gel recovery are just several techniques that were tested in this test series."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/127271"],"dc:language":["eng","en"],"dc:rights":["Copyright 2024 Matthew Bielawski"],"dc:subject":["High-speed Imaging","Spectral Analysis","Material Failure","Detonation Physics","Explosive Fragmentation Modeling","Energy Deposition","Blast Wave Propagation","High Explosives","Fragmentation","Hemispherical Shells","Explosive Materials","Diagnostics Techniques","Experimental Methods","Spectroscopy","Optical Measurements","Shock Wave Analysis","Explosive Testing","Fragment Dynamics","Material Characterization","Ballistic Analysis"],"dc:title":["Material study on the fragmentation of high explosive, hemispherical shells: Diagnostics techniques and results"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Theoretical & Applied Mechans"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:03Z"}