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Ballistic testing of additional armour demonstrators

Płonka B., Płonka K., Rajda M.

Szybkobieżne Pojazdy Gąsienicowe

2018

nr 1 (47)

59--67

The article presents the methodology and results of armour ballistic resistance testing. The armour was designed and manufactured by the Institute of Non-ferrous Metals, Light Metals Division (IMN OML) in cooperation with LUBAWA S.A. Additional armour was made of multi-layer materials, including special ceramics and light metals. The method of creating armour demonstrators for Armstal armoured steel 6 mm, 8 mm and 10 mm thick armour is presented. Description and possible applications of object demonstrator designed and manufactured by "OBRUM" sp. z o.o are also given. All of the armour and the object demonstrators were designed to be tested in accordance with STANAG 4569 and AEP 55 standards. Ballistic tests of the armour demonstrators showed positive results according to standard requirements for 8 out of 9 demonstrators. The research results show that the object demonstrator is suitable for conducting a wide range of tests in accordance with the standards.

Palaeontological analysis of Middle Miocene siltstones at Wiślica (Carpathian Foredeep, Poland)

Płonka K.

Geologos

2017

Vol. 23, No. 1

29--43

Middle Miocene siltstones of the Skawina Formation that crop out at Wiślica, within the axial part of the Carpathian Foredeep in Poland, were analysed. The deposits studied contain numerous benthic and planktonic foraminifera, ostracods, echinoid spines, bryozoans, bivalves and otoliths. The fossils recognised document an early ‘Badenian’ (= Langhian in the Mediterranean area), or, more precisely, ‘Moravian’ age of the deposit. Palaeoecological analysis suggests normal-marine conditions with full salinity. The studied siltstones were deposited from middle–lower shoreface to lower–offshore, warm surface water and locally suboxic to dysoxic conditions in the sediment.