Assessment of Detonation Performance and Characteristics of 2,4,6-Trinitrotoluene Based Melt Cast Explosives Containing Aluminum by Laser Induced Breakdown Spectroscopy

• Autorzy: Rezaei Amir Hossein , Keshavarz Mohammad Hossein , Tehrani Masoud Kavosh , Darbani Mohammad Reza

Identyfikatory

DOI

10.22211/cejem/104383

• Języki publikacji: EN

Abstrakty

EN

Aluminized melt cast formulations based on 2,4,6-trinitrotoluene (TNT) deliver an enhanced blast effect because the secondary combustion process of aluminum (Al) occurs beyond the detonation zone. A new method is introduced to assess the detonation performance and characteristics of aluminized TNT explosives on the basis of the laser-induced breakdown spectroscopy (LIBS) technique, in both air and argon (Ar) atmospheres. The plasma emissions of the prepared samples were recorded, where the atomic lines of Al, C, O and H as well as the molecular bands of AlO, CN and C2 were identified. A good discrimination and separation between the samples was possible using LIBS and principle component analysis (PCA), although they had similar atomic compositions. The quantitative calibration curve obtained using the relative intensity of Al/O was used to determine the detonation velocity/pressure and aluminum content of the TNT/Al samples. Comparisons between experimental and theoretical spectra were made using a Nelder–Mead temperature program for CN bands, which provided good agreement with the fitted spectra. Finally, CN vibrational temperatures were calculated from these spectral fittings. These temperatures have higher values in an Ar atmosphere than in an air atmosphere. Thus, increasing the oxygen concentration can decrease these temperatures in TNT/Al standard samples.

Słowa kluczowe

EN

laser induced breakdown; spectroscopy; molecular structure; chemical analysis

• Czasopismo: Central European Journal of Energetic Materials
• Rocznik: 2019
• Tom: Vol. 16, no. 1
• Strony: 3--20
• Opis fizyczny: Bibliogr. 56 poz., rys., tab.

Twórcy

autor

Rezaei Amir Hossein

• Malek-ashtar University of Technology, 83145/115 Shahin-shahr, Islamic Republic of Iran

autor

Keshavarz Mohammad Hossein

• Malek-ashtar University of Technology, 83145/115 Shahin-shahr, Islamic Republic of Iran

autor

Tehrani Masoud Kavosh

• Malek-ashtar University of Technology, 83145/115 Shahin-shahr, Islamic Republic of Iran

autor

Darbani Mohammad Reza

• Malek-ashtar University of Technology, 83145/115 Shahin-shahr, Islamic Republic of Iran

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).