Simulation of an efficient particle extraction for the detection of explosive materials

2018 ◽  
Vol 30 (3) ◽  
pp. 032201
Author(s):  
Arndt Hohnholz ◽  
Viktor Schütz ◽  
Daniel Albrecht ◽  
Jürgen Koch ◽  
Oliver Suttmann ◽  
...  
Keyword(s):  
Explosive Materials ◽  
Particle Extraction

Standoff Raman Detection of Explosive Materials Using a Small Raman Spectroscopy System

2017 ◽  
Vol 20 (3) ◽  
pp. 60-66 ◽  
Author(s):  
Naseer M. Hadi ◽  
◽  
Mohammad R. Mohammad ◽  
Haider G. Abdulzahraa ◽  
Keyword(s):  
Raman Spectroscopy ◽  
Explosive Materials ◽  
Spectroscopy System

Band gaps and the possible effect on impact sensitivity for some nitro aromatic explosive materials

2009 ◽  
Vol 109 (7) ◽  
pp. 1547-1552 ◽  
Author(s):  
Hong Zhang ◽  
Frankie Cheung ◽  
Feng Zhao ◽  
Xin-Lu Cheng
Keyword(s):  
Impact Sensitivity ◽  
Band Gaps ◽  
Explosive Materials ◽  
Nitro Aromatic

ALKALINE HYDROLYSIS OF MUNITIONS-GRADE NITROCELLULOSE

1994 ◽  
Vol 30 (3) ◽  
pp. 63-72 ◽  
Author(s):  
James E. Alleman ◽  
Byung J. Kim ◽  
David M. Quivey ◽  
Lucina O. Equihua
Keyword(s):  
Alkaline Hydrolysis ◽  
Environmental Problem ◽  
Research Effort ◽  
Chemical Degradation ◽  
Cellulose Structure ◽  
Manufacturing Operations ◽  
Explosive Materials ◽  
High Level ◽  
Hydrolysis Of ◽  
Lower Contact

Cellulose nitrate compounds constitute an important industrial feedstock, with applications ranging from fingernail polish to photographic films to explosives. Indeed, the latter use has strategic implications associated with the production of military munitions. However, the particularly high level of cellulose nitration required for these explosive materials creates a significant environmental problem with respect to the necessary degradation of waste ‘fines’ inevitably discharged from their manufacturing operations. Rather ironically, these waste solids have proven to be remarkably stable, leading to a traditional reliance upon a primitive treatment approach (i.e., open-field incineration) which is neither safe nor environmentally acceptable. This paper, therefore, describes an alternative chemical degradation procedure based on alkaline hydrolysis. Primarily using sodium hydroxide at low percent dosage levels, this research effort has successfully achieved significant levels of denitration and apparent breakdown of the backbone cellulose structure. Furthermore, as compared with prior research on thi s topic, these results were achieved at markedly lower contact times and temperatures. However, two uncertainties still remain regarding this process, involving both the fate of a significant fraction of the original nitrogen and the apparently lingering recalcitrant nature of the post-degradation organics. In both cases, ongoing investigations have been instituted to resolve these issues.

scholarly journals INDONESIAN REGULATORY SYSTEM TOWARDS OWNERSHIP OF EXPLOSIVE DEVICES BY CIVILIANS

2019 ◽  
Vol 5 (1) ◽  
pp. 218-237
Author(s):  
Zenny Rezania Dewantary ◽  
Ulya Yasmine Prisandani ◽  
Mohammad Afdha Lardo
Keyword(s):  
Monitoring System ◽  
Regulatory System ◽  
International Convention ◽  
Supervisory System ◽  
Explosive Materials ◽  
Terrorist Groups ◽  
Explosive Devices

Indonesia possessed laws and regulation concerning the acquisition, distribution and use of armed weapons and explosive devices. A number of incidents, however, show a faulty monitoring system. Terrorist groups involved in the Surabaya bombing this year has been known to use triaseton triperoxide also known as the mother of Satan (mos), commonly used by ISIS. This fact shows a weakness in the monitoring or supervisory system put in place to control the use of armed weapons and explosive devices. In this article, the author shall discuss, using a normative-empirical juridical approach, to what extent the prevailing national law has been synchronized with the existing international convention regulating the acquisition and use of armed weapons and explosive materials or devices.

Complex System for Detection, Localization and Destruction of Explosive Materials in Suspect Objects Found in Public Areas

2004 ◽  
pp. 195-200
Author(s):  
V. S. Kyzyurov ◽  
A. I. Laykin ◽  
A. B. Vishnevkin ◽  
Yu. I. Olshansky ◽  
N. A. Ivanov ◽  
...  
Keyword(s):  
Complex System ◽  
Explosive Materials ◽  
Public Areas

scholarly journals Analysis on the Possibility of Eliminating Interference from Paraseismic Vibration Signals Induced by the Detonation of Explosive Materials

Sensors ◽  
2020 ◽  
Vol 20 (21) ◽  
pp. 6401
Author(s):  
Józef Pyra ◽  
Maciej Kłaczyński ◽  
Rafał Burdzik
Keyword(s):  
Acoustic Waves ◽  
Vibration Signal ◽  
Test Results ◽  
Subtraction Method ◽  
Reverberation Chamber ◽  
Explosive Materials ◽  
Short Time ◽  
Spectral Subtraction Method ◽  
The Impact ◽  
Made In

This article presents the results of studies on the impact of acoustic waves on geophones and microphones used to measure airblasts carried out in a reverberation chamber. During the tests, a number of test signals were generated, of which two are presented in this article: frequency-modulated sine (sine sweep) waves in the 30–300 Hz range, and the result of detonating 3 g of pyrotechnic material inside the chamber. Then, based on the short-time Fourier transform, the spectral subtraction method was used to remove unwanted disruption interfering with the recorded signal. Using MATLAB software, a program was written that was calibrated and adapted to the specifics of the measuring equipment based on the collected test results. As a result, it was possible to clean the signals of interference and obtain a vibration signal propagated by the substrate. The results are based on signals registered in the laboratory and made in field conditions during the detonation of explosive materials.

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