Repozytorium publikacji - Politechnika Gdańska

This research aims to experimentally evaluate the behaviour of multi-layered fibrous cementitious composites withintermediate Glass Fibre Meshes (GFM) under repeated projectile load. The impact load was subjected through a convexedge projectile needle at a low velocity on cylindrical specimens of three-layered fibrous cementitious composites, whichhave two different steel fibre distributions. In series A mixtures, a constant steel fibre dosage of 2.5% by volume was used.On the other hand, the fibre dosage of the outer layers was 3.0%; while it was 1.5% in the middle layer of series B mixtures.The number of intermediate GFM was the variable that distinguishes the mixtures of each series. The resistance toprojectile impacts was evaluated on the basis of penetration depth, near surface distortion, weight loss, damage ratio andfailure pattern. The test results showed that due to the combined effect of steel fibre and GFM, significantly lower weightlosses were recorded for series A and B specimens compared with reference specimens. However, the different fibredistributions (series B) led to lower penetration depths and weight losses with less surface distortion compared with thefixed fibre distribution (series A). The reduction in the destroyed front surface area of series A specimens compared withreference specimens ranged from 27.8 to 38.1%; while that of series B specimens ranged from 34.8 to 53.4%. In addition, asimplified analytical model was introduced to predict the ejected composite mass. The model predictions were found to bein good agreement with the experimental masses.

Autorzy

• prof. G. Murali,
• Sallal R. Abid,
• prof. Hakim Abdelgader link otwiera się w nowej karcie ,
• Y. H. Mugahed Amran,
• Mohammad Shekarchi,
• prof. dr hab. inż. Krzysztof Wilde link otwiera się w nowej karcie