International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Nanocellulose applications in the wood-based panels have gained a great deal in the scientific researches and industrial applications. Utilization of natural and synthetic nanoparticles as reinforcement in the wood-based panels has considerably increased in the last two decades due to their unique properties. The main property of the nanocellulose is its very high surface area. Hereby, the very small use of nanoparticles suh as %1-2 wt% in the composites is enough at a relatively low-cost. Nanoparticles are presently considered to be high-potential reinforcing fillers for the enhancement of the physical, mechanical, electrical/electronic properties, thermal resistivity, fire, durability properties of wood-based panels such as particleboard, fibreboard, oriendted strandboard, and plywood. The nanoparticles are applied to wood based panels dur ing the manufacture and after production. The raw materials such as wood or resin can be treated with nanoparticles or the finished panels can be treated with nanoparticles. In this study, the recent developments in the nano particles, their applications in the wood based panels, and their effects on the panel properties were reviewed

A quick and accurate determination of the physical properties of seawater represents an important aspect of research dealing with processes that involve wide variations in temperature, pressure, and concentration. The physical data should be cast in a form readily compatible with the development of mathematical models associated with the synthesis and optimization of industrial processes involving heat and mass transfer operations on seawater. In this work, previously reported experimental data pertaining to the variation of seawater physical properties are correlated into simple empirical mathematical forms enabling their straight forward inclusion into mathematical models associated with seawater and brackish water desalination.

The aim of this study was to determine some of the physical and mechanical properties of Turkish hazelnut (CoryluscolurnaL.) wood.Hazelnut is an endemic species in Turkey and the trees used for the study were taken from the Pınarbaşı District of KastamonuProvince. As a resultof experiments carried out to evaluate the physical properties, it was found that the values of dry and air dry density were 0.636 gr/cm³ and 0.672 gr/cm³ , radial, tangential and longitudinal swelling values were 4.60%, 7.48% and 0.41%, radial, tangential and longitudinal shrinkage values were 5.11%, 8.49% and 0.59%, respectively. According to the related standards, the mechanical properties ofbending strength (98.5 N/mm²), modulus of elasticity in bending (8273.4 N/mm²), compressive strength parallel to the grain (50.09 N/mm² ), dynamic bending strength (impact strength)(0.71 kN/cm), tensile strength perpendicular to the grain (5.09 N/mm² ), and hardness values of cross, radial and transverse sections (72.55 N/mm² , 47.32 N/mm² , 46.13 N/mm², respectively) were also determined.

Warm and hot compressive tests, bending test, measurement of density, heat capacity and thermal conductivityw ere applied to study of feature mechanical and physical properties of cast alloys Fe + (16,8 – 25,6) % Mn + (0 – 14,4) % Al + (0,02 – 2,18) % C + (0,001 – 0,135) % N.

The results of the influence of preliminary thermal-cyclic deformation and subsequent annealing in the range of 100÷900 ºС with a step of 100 ºС on the microstructure, coercive force and linear expansion of hot-rolled sheet steel 10 are presented. It was found that the use of preliminary thermal-cyclic deformation results in increase in coercive force no more than by 8% in comparison with the steel sheet produced by an industrial technology. Decreasing feasibility in coercive force of the sheet steel produced with the use of thermal-cyclic forging almost by 3 times in comparison with the initial raw condition due to the subsequent annealing at 900ºС during 10 h. is shown. In addition, annealing in accordance with this mode reduces a temperature coefficient of linear expansion of a sheet steel on average by 6 % within the range of the test temperatures 50-450 ºС.