Full-text resources of CEJSH and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl

Results found: 2

first rewind previous Page / 1 next fast forward last

Search results

Search:
in the keywords:  X-ray radiography
help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1
Publication available in full text mode
Content available

Laboratory methods for testing the performance of pyrotechnic delay elements

100%
Warchol R., Nita M.
Scientific Journal of the Military University of Land Forces
|
2018
|
vol. 50
|
issue 4(190)
101-115
EN
Pyrotechnic delay elements owing to their simple structure and reliability are very often used as part of the design of ammunition. Their basic task consists in generating a specified delay between the respective actions of two elements/systems, required to ensure the safe and reliable work of ammunition. The paper presents laboratory methods employed for testing the performance of pyrotechnic delay elements (PDEs) used in means of combat. The introductory part describes pyrotechnical delay elements and the task fulfilled by them in ammunition. The next part discusses performance parameters of pyrotechnic delay elements, decisive for their proper operation, and factors influencing such operation. In its main part the article presents the standard defining the laboratory methods to be employed for testing pyrotechnic delay elements. According to the above-mentioned standard, the laboratory methods of testing pyrotechnic delay elements can be divided into tests in the open and closed systems. Further, the paper discusses both types of test systems. Taking account of a wide thematic scope of the discussed issue, this article focuses mainly on presenting new methods of testing pyrotechnic delay elements, which have not been mentioned in the standard. Provided examples of tests of pyrotechnic delay elements have been taken from the Polish and foreign literature. Two methods of testing pyrotechnic delay elements are worth paying special attention, one making use of a thermal imaging camera, and the other relying on Roentgen radiation.
2

Accelerators and Detectors for Homeland Security

88%
Wrochna G., Syntfeld-Kazuch A., Moszynski M., Gierlik M., Wronka S.
Internal Security
|
2011
|
vol. 3(1)
9-28
EN
Having become a Party to several European and international treaties and conventions, Poland has paid increased attention to improving methods and techniques of prevention and detection of illicit hazardous materials. The article reviews new scintillation detectors of gamma and neutron radiation as well as presents a concept of dual-energy electron accelerator application in monitoring systems for homeland security. There are several requirements which the instrument should meet: it should be able to operate in a mixed gamma-neutron field as neutrons are a unique signature of the presence of fissile materials, be quite sensitive and highly selective to avoid a misinterpretation, and finally it should be efficient and inexpensive. Detection of hazardous materials (nuclear, explosives, drugs) can be realized by two methods – passive detection of gamma-rays and neutrons from radioactive and nuclear material, and active detection of explosives via neutron activation and/or X-ray radiography. In the paper a series of new scintillators (e.g. LaBr3(Ce), LuAG:Pr, boron-loaded BC523A and EJ309B5) in terms of their sensitivity and selectivity in gamma/neutron detection as well as material discrimination using dual-energy electron accelerator are discussed. Both techniques – X-rays and neutron activation analysis – can offer the possibility of automatic detection of explosives or drugs with the emphasis on an innovative approach to new built systems.
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.