This study quantified the physical and mechanical properties of sycamore maple (Acer pseudoplatanus L.) as a basis for assessing wood quality. The oven-dry density, density at 12% MC, green basic longitudinal, radial, tangential volumetric shrinkages were tested bending strength, modulus elasticity bending, compression strength parallel to grain in radial direction well Brinell hardness on cros...

Samples of ductile iron alloyed with 0.88 % Ni a nodule count 606, 523, and 290 nod/mm2 were obtained from sand cast plates different thickness in the range 8.46 to 25.4 mm. The effect was evaluated during austempering process held at 285?C times 15, 30, 45, 60, 70, 90 min. volume fraction high carbon austenite increased when increased, however, content kept almost constant. window narrow, requ...

Proficiency testing is a very powerful tool for laboratories to continuously monitor the validity of results, and considered one technical requirements accreditation according ISO 17025. Stability check test samples or artefacts important ensure that these are fit purpose, give consistent performance over specified period time. The aim this work propose method stability using t-test as an alter...

Abstract This work concerns basic research on the concept of wood hardness in a sense similar to Brinell or modified Monnin. The experimental part this article is based carried out beech with six indenters: three ball indenters 10, 15 and 30 mm cylindrical mm. On basis measurements for wide range loads, relations analogous Meyer power law were obtained, exponent determined both balls equal 5/2 ...

Production of aluminum matrix composites is widespread because these material provide enhanced mechanical properties compared to aluminum. One the most important parameters of metal matrix composite production is uniform distribution of reinforcing nanoparticles in matrices using the stir-casting method. Second is ensuring high wettability, which is determined by evaluating the properties of ma...

This paper presents the new route of fabrication H-AlSi24Cu3.8Mg0.8 alloy, assisted by ultrasonic vibration stirring and squeeze casting (UVSS). The primary objective this investigation is to establish tribological characteristics prepared aluminium alloy under dry, lubricated, coated sliding conditions. Oil SAE20W40 used as a lubricant diamond-like carbon (DLC) coating. Under load between 20 N...

in this article, commercially pure copper samples were severely deformed by equal channel angular pressing (ecap) up to eight passes at room temperature. the effects of severe plastic deformation on the microstructure, mechanical properties, and electrical conductivity of the copper were investigated. the microstructure evolution was followed by optical microscope and field emission scanning el...

This paper investigated the effect of unripe plantain peel (UPP) nanoparticles reinforced Zn-MgO composite coating on hardness, anti-corrosion and microstructure properties mild steel. The characteristics coatings were examined using potentiodynamic polarization method, employing 3.65 % NaCl solution as test medium. hardness was studied Brinell technique, while XRD SEM/EDS. results study reveal...

As a result of advances in science and technology, the importance metal matrix composite materials is increasing gradually today. However, many studies, production carried out with monotype ceramic particle reinforcement. In this study, production, microstructure-hardness, wear performance composite-hybrid that had AA 7075 aluminum powder were reinforced by SiC Al2O3 particles at different rati...