Cylindrical thin-walled tubes due to construction and easy installation, high energy absorption capacity are used in the automotive industry as an impact energy absorber. However, the main weakness of cylindrical tubes is in the high initial peak load. Therefore, in this paper, to overcome this weakness, a buckling initiator is used at the top of the tube. This buckling initiator is a steel rod...

cylindrical thin-walled tubes due to construction and easy installation, high energy absorption capacity are used in the automotive industry as an impact energy absorber. however, the main weakness of cylindrical tubes is in the high initial peak load. therefore, in this paper, to overcome this weakness, a buckling initiator is used at the top of the tube. this buckling initiator is a steel rod...

Abstract—The main objective of this paper is study the influence of carbon nano-tubes fibers and nano silica fibers on the characteristic compressive strength and flexural strength on concrete and cement mortar. Twelve tested specimens were tested with square section its dimensions (4040 160) mm, divided into four groups. The first and second group studied the effect of carbon nano-tubes (CNT...

The purpose of this study was to investigate chitin and chitosan as potential materials for biodegradable nerve guides. Transparent chitin hydrogel tubes were synthesized, for the first time, from chitosan solutions using acylation chemistry and mold casting techniques. Alkaline hydrolysis of chitin tubes resulted in chitosan tubes, with the extent of hydrolysis controlling the resulting amine ...

Concrete-filled double skin structural members, comprising of two metal tubes and concrete infill between them, have been gaining popularity in engineering because their high strength, large stiffness, good ductility easy maintenance. The use aluminium these members can further enhance performance, as alloy offers lightweight corrosion resistance. This study presents experimental numerical inve...

The characteristics of composite materials Al 2 O 3 system - carbon nanotubes eutectic additives are investigated. influence the reinforcing component content, as well mode high-temperature heat treatment in vacuum on strength properties material considered. Samples with a mass content tubes 0.4% were obtained. These samples had following characteristics: an average tensile at three-point bendi...

To develop advanced nuclear fuel claddings, two oxide dispersion strengthened (ODS) alloys were designed, manufactured, and evaluated. First, 12 %Cr alloy, is an ODS-version of ferritic steel, second, 10 %Cr-6 %Al a high-strength version accident tolerant iron-chrome-aluminum alloy. Their properties performance compared with “classical” ODS material, 14 alloy 14WYT. Thin-walled (∼500 µm wall th...