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Wyszukujesz frazę "ballistics shield" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
The analysis of properties of platers used for the structural - ballistic safety shields in marine vessels
Autorzy:
Załęska-Fornal, A.
Kyzioł, L.
Powiązania:
https://bibliotekanauki.pl/articles/246690.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
ballistics shield
high resistance steel
platters
penetration
perforation
Opis:
Some selected parameters of steel for structural-ballistic shields (OKB) used in the Navy vessels have been presented. The standards for steel to be used for ballistic shields are established by safety standards institutions and committees. There has been made an analysis of steel used for OKB of the vessels. The bullet-proof of the platters has been carried out on the appropriate position. The results of bullet-proof test of selected platters have been presented. The analysis made allowed to select the platters used for the structural-ballistic safety shields in marine vessels and give the direction for further research determined by contemporary threats of both military and terroristic nature. To produce the platters there have been used two types of armoured metal sheet which had been milled to flats made of the basic steel and which can be applied in shipbuilding. The structural-ballistic platters have had the form of flats with the total thickness of 8.5-9.2 mm. The prepared structural-ballistic platters have been technological processed in order to increase the degree of their strength. There have been also presented mechanical and technological properties of platters after heat treatment. The results of the bullet-proof have been presented in graphs form defining the dependence between the hit force and time. The effects of fire of specimen made of platters, by 7.62 mm cal. bullets with the proper speed have been seen on photographs.
Źródło:
Journal of KONES; 2012, 19, 2; 577-583
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Test for penetrability of 10GHMBA steel used for the ballistic safety shields
Autorzy:
Załęska-Fornal, A.
Kyzioł, L.
Powiązania:
https://bibliotekanauki.pl/articles/242925.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
ballistics
ballistic properties of steel
penetration of the shield
ballistic thickness of steel
penetration
perforation of the shield
Opis:
There are elaborated some dependences which make it possible to compute some materials resistant to hits with the energy greater than in so far tests of the bullets of 7,62 mm caliber. The tests of being resistant to hit have been carried out with the 10GHMBA steel which has been overshot by the bullets of 12.7 mm. In order to do that the single cover plates with changeable thickness have been placed in the ballistic pendulum. On the basis of the obtained measurements like speed before and behind the specimen, the pendulum deflection angle, the force passed to the dynamometer sleeve, it is possible to define the maximum thickness of the penetrated material. The comparison with the bullets proof of various materials like steel with composites, ceramics or the mathematical models verification by an experiment can be done with direct comparison of some chosen measured parameters. For example the bullet speed behind the specimen has to be related to its thickness similarly to some other parameters which are possible to be measured. All the quantities like the bullet speed behind the specimen are the functions of the specimen thickness for the defined type of bullet. The penetration process of the material is a kind of transformation of the energy carried by the bullet into the energy of the specimen deformation, the emitted warm or into the pendulum work. In order to compare the bullet proof with various materials or the mathematical models with experiment there is proposed getting in some non-dimensional factors which define the change of the kinetic energy or the system impulse.
Źródło:
Journal of KONES; 2012, 19, 4; 659-666
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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