Grinding-wheel wear is a critical factor affecting grinding performance and tool cost. Unfortunately, tests – particularly with superabrasives can be notoriously time-consuming. Therefore, novel lapping-based method proposed for investigating behaviour of the grit-bond system. Wear were performed in (i) lapping, (ii) surface grinding, (iii) cylindrical range grit-shape aspect ratios grit-toughn...

Abstract The progressive microcracking processes in a burst-prone Class II rock, Kuru granite, and non-burst-prone I Fauske marble were investigated, aiming to reveal the physics of rock burst difference burst-proneness rocks. cylindrical specimens granite uniaxially loaded various levels both pre- post-peak stages, which was monitored by Acoustic emission technique. After that, thin sections p...

background :    although, nontuberculous mycobacteria can cause disease in different organisms, they usually are not reported in most countries because scientists in general consider them as non-pathogens. but, increasing nontuberculous mycobacteria diseases occurrence has changed this belief. nevertheless, there is no meta-analysis review about prevalence of nontuberculous mycobacteria in iran...

conclusion according to the results of our series, percutaneous liver biopsy using the tru-cut biopsy gun guided by ultrasonography can be performed safely. we resolve that routine ultrasound of the puncture site is a quick, effective and safe procedure. the complication rate is very low. the us-assisted percutaneous liver biopsy should be used for all cases. results a total of 1018 patients we...

The problem of calculating the required adhesion strength and accuracy measuring adhesive/cohesive thermally sprayed coatings (thermal barrier, electrically insulating, irradiation) on a cylindrical test specimen is practical interest from point view improving reliability highly loaded parts internal combustion engines agricultural machines, various aerospace nuclear industries. There have been...

Nuclear graphite can be used in fission and fusion systems due to its excellent nuclear performance mechanical properties where the ability of oxidation resistance is usually concerned. Although new ET-10 was revealed by previous experiments regarding accident conditions a reactor, further studies are needed oxidize under recommended ASTM D7542 standard. A test facility designed developed cylin...

In the present study, numerical analysis of concrete columns wrapped with different composite materials is conducted. Different fibre reinforced plastic sheets such as CFRP, BFRP, HFRP, AFRP, GFRP and steel wrapping are taken into consideration. A cylindrical specimen representing a short column modelled Total deformation, Directional deformation Equivalent stresses in core shell were obtained ...