This report presents the results of an experimental study that was conducted to investigate the effects of key parameters on the compressive behavior of fiber reinforced polymer (FRP)concrete-steel double-skin tubular columns (FSDT). Hybrid FSDT columns have been introduced as a new form of hybrid columns. They consist of an outer tube made of FRP and inner tube made of steel, with sandwiched c...

-This paper introduces an experiment to investigate dry sliding resistance of frictional interfaces at normal pressures up to 100 MPa, slip speeds up to 10 m/s and slip distances of approximately 10 mm. This new apparatus involves a novel modification of the conventional torsional Kolsky bar apparatus, employed extensively in the past for investigating high strain rate behavior of engineering m...

Purpose: The aim of the paper is to design heat treatment conditions of dual-phase steel and to determine their influence on the structure and mechanical properties of steel. Design/methodology/approach: The heat treatment of the C-Mn steel in order to obtain a dual-phase ferritic – martensitic structure of desirable phase fractions was realized. To investigate the influence of heat treatment p...

OBJECTIVE To analyze the influence of steel plates for osteosynthesis on the velocity of ultrasound propagation (VU) through the bone. METHODS The transverse coronal and sagittal velocity of ultrasound propagation underwater were measured on the intact bone and then on assemblies of the same bone with two types of osteosynthesis plates (DCP and semi tubular), fixed onto the dorsal side of the...

A new vacuum arc type ion source (VARIS) has been developed and tested for high current uranium operation. Figure 1 shows a cross sectional view of the ion source. The discharge arrangement has a tubular anode opposite to the cathode mount carrying 17 cathodes (each one is 5.7mm in diameter and 17mm in length). The anode, made of stainless steel, is placed 15mm apart from the cathode. Its apert...

Deuterium thermal desorption spectra were investigated on the samples of austenitic stainless steel 18Cr10NiTi preimplanted at 100 K with deuterium ions in the dose range from 3 × 10(15) to 5 × 10(18) D/cm(2). The kinetics of structural transformation development in the implantation steel layer was traced from deuterium thermodesorption spectra as a function of implanted deuterium concentration...

Article history: Received 10.9.2012 Received in revised form 10.12.2012 Accepted 10.12.2012 27SiMn steels with different original structures were zero time holding quenched after pretreatments including general quenching and normalizing, respectively, then their tensile strength and hardness were determined and also microstructures were analyzed.. The experimental results show that thus quenche...