Enhancements of Slow-propagation Tungsten-‎Based Delay Compositions for Blasting and ‎Propulsion Systems
hawass, A., Elwany, M., Elmarsfy‎, S., Abadir, E. (2023). Enhancements of Slow-propagation Tungsten-‎Based Delay Compositions for Blasting and ‎Propulsion Systems. EKB Journal Management System, 3(1), 24-38. doi: 10.21608/njbs.2023.324720
ahmed hawass; Mohamed M. Elwany; Sahar Elmarsfy‎; Ehab Fouad Abadir. "Enhancements of Slow-propagation Tungsten-‎Based Delay Compositions for Blasting and ‎Propulsion Systems". EKB Journal Management System, 3, 1, 2023, 24-38. doi: 10.21608/njbs.2023.324720
hawass, A., Elwany, M., Elmarsfy‎, S., Abadir, E. (2023). 'Enhancements of Slow-propagation Tungsten-‎Based Delay Compositions for Blasting and ‎Propulsion Systems', EKB Journal Management System, 3(1), pp. 24-38. doi: 10.21608/njbs.2023.324720
hawass, A., Elwany, M., Elmarsfy‎, S., Abadir, E. Enhancements of Slow-propagation Tungsten-‎Based Delay Compositions for Blasting and ‎Propulsion Systems. EKB Journal Management System, 2023; 3(1): 24-38. doi: 10.21608/njbs.2023.324720

Enhancements of Slow-propagation Tungsten-‎Based Delay Compositions for Blasting and ‎Propulsion Systems

Nile Journal of Basic Science
Volume 3, Issue 1, 2023, Page 24-38  XML PDF (874.72 K)
Document Type: Original Article
DOI: 10.21608/njbs.2023.324720
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Authors
ahmed hawass email 1; Mohamed M. Elwany2; Sahar Elmarsfy‎2; Ehab Fouad Abadir2
1Cairo Higher Institute for Engineering, Computer Science and Management.‎
2Department of Chemical Eng., Cairo University, Giza, Egypt‎
Abstract
Applications for controlled energetic timed events in both the military and civilian sectors highlight the critical function of delay compositions. The widespread usage of tungsten delay systems in space industry and other components motivates academic research aimed at enhancing the performance and reliability of these materials. Different delay compositions are created for this purpose based on varying amounts of tungsten (W) fuel modified with graphite (C). The major components of delay systems included polyvinyl acetate (PVA), BaCrO4, KClO4, and a graphite weight fraction that ranged from 2% to 10%. The compositions are made by combining, granulating, and then loading them into aluminum tubes. This study illustrates the impact of 2% to 10% graphite fuel added to tungsten-based delay composition. The heat of production and density for each constituent were computed and presented as part of thermochemical calculations using the ICT code to forecast the performance of the delay element. Schaffler Company's ignition static test for the delay element using the central testing unit (CTU) revealed an improvement in burning rate of 9% to 47%. Utilizing digital visual imaging systems, the burning behavior is observed, and SEM apparatuses are used to analyze changes in the composition's outer surface. The sensitivity tests (impact, friction, ignition, electrostatic discharge (ESD), and thermal analysis test utilizing DSC and TAM apparatus) are used to characterize the prepared compositions. All of the results from the evaluated delay compositions guarantee safe handling, production, transportation, and storage.
Keywords
Tungsten delay; Graphite; Sensitivity test; Thermal analysis; ICT code.‎
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