Search results

Wood density of samples was measured according to standard test methods for physical and mechanical properties of wood.
Wood density is one of the most important physical characteristics of wood, which is also the major factor affecting wood stiffness and other mechanical properties.
NIR is a rapid, accurate, low-cost, nondestructive, and nonpolluting optimal technique, which has been widely used to characterize chemical and physical properties of a wide range of materials.
Recently, NIR have applied extensively to estimate wood properties, wood processing, modification and wood composites [4-6].

It allows leveling a sharp gradient of mechanical properties usually observed in dissimilar joints.
According to wave-particle duality, an electron beam can simultaneously exhibit and the properties of flow of charged particles and the properties of an electromagnetic wave.
They contain information about the properties of the crystal.
Titkov, Effect of Structure on Properties of Al2O3 and Al (or Ti) Mechanical Mixture Coatings Produced by Multichamber Detonation Spraying Method, Paton Weld.
Titkov, Effect of Nano-Structured Factors on the Properties of the Coatings Produced by Detonation Spraying Method, in: A.D.

The accuracy of springback simulation is affected by various computational and material factors, all of these factors should be determined cautiously.
Fig.1 Schematic description of the tool for U-channel forming and springback simulation The computational factors such as element type, mesh size and integration scheme were chosen carefully to yield the best results.
Table1 shows the summary of parameters of mechanical properties.
Table 1 Mechanical properties of DP600 steel sheet Basic parameters Hill'48 parameters Nonlinear hardening parameters Young's module[GPa] 207 F 0.44 Q[MPa] 190 Poisson ratio 0.3 G 0.46 b 8 Yield stress[MPa] 420 H 0.53 C[MPa] 9500 Density[Kg/m 3] 7800 � 1.82 γ 40 The finite element simulation and experimental results are shown in fig.2.
Error factors are given in the bracket. β1, β2 indicate the variation of θ1, θ2 after springback.

Due to this fact, it is important to recognise the impact of welds on the properties of manufactured structures.
Subject of research The research relates to high-strength structural steel S960QL with chemical composition and mechanical properties shown in Table 1.
Chemical composition and mechanical properties of S960QL steel Chemical composition wt [%] C Si Mn Cr Mo Ni Al V Cu 0.18 0.36 1.19 0.23 0.66 0.06 0.11 0.03 0.19 Strength properties E Rp0.2 Rm A 2.20x105 MPa 974 MPa 1070 MPa 14.2 % Tests were conducted on two types of butt welds: I-joints and V-joints which were made at the Institute of Welding (Instytut Spawalnictwa) in Gliwice.
Pala, Mechanical properties of welded joints made of high-strength steel S960-QC by laser method, Logistyka 6/2014, pp. 3458-3464 (in Polish) [8] B.
Torzewski, Mechanical Properties of Laser-Welded Joints in the Difficult-to-Weld steels, Proceedings of 8th International Conference ITELMS ‘2013, May 23-24, 2013, Panevezys, Lithuania, pp. 173-178.

Material scientists always face challenges when it comes to the tribological and mechanical properties of aluminium as it exudes rather poor behaviour in these aspects.
𝜌= density (g/cm³) 0.13 = metric and time change factors icorr. = corrosion current density (μ A/cm²).
Tan, Physio-mechanical properties of aluminum metal matrix composites reinforced with Al2O3 and SiC, Intr.
Luo, Interaction of mechanical and electrochemical factors in erosion-corrosion of carbon steel, Electrochim.
Kadhem, The Effect of SiC addition on AlNi compact mechanical properties produced via powder metallurgy, J.

The wear properties of the phosphate coatings are dependent on the surface finish and the material used for the sliding counter face.
The operating parameters that affect the wear characteristics of the manganese phosphate coated substrate includes material property, loading conditions, environmental factors, surface roughness of the contact surfaces etc…The main objective of this paper is to investigate the influence of applied load, surface roughness, sliding distance on coefficient of friction and volumetric wear loss.
The mean S/N values for the three levels of all the factors are calculated and tabulated as shown in Table 4.
The objective of S/N ratio is to measure the performance and to develop products and processes insensitive to noise factors [17].
J.Perry,T.S.Eyre :The effect of Phosphating on the Friction and wear properties of Grey cast iron,Wear,vol.43,pp185-197,1977

This factor infuences the total scrap amount in the industries, which can go up to 10% in percentage over the total production quantities [2].
Mechanical Proprieties.
The 2 and 2.5 m/s specimens have higher properties, as the peak moves to the right of the chart (between 5 and 6 % in 2 m/s samples, and close to 6% in 2.5 m/s specimens).
In these settings, the highest number of defects caused higher stress intensification factors (while applying the tensile load), therefore the fracture of the specimens occurred earlier.
The two cast cavities had distinct tensile properties, with the specimens from the right cavity having superior fracture elongations.

The factors influencing the reliability of the laser-induced code readability have been determined as color and contrast.
It is necessary to use methods of macrophotography [6], optical metallography [7], scanning and transmission electron microscopy [8] to characterize the surface of the materials at issue before and after laser processing and to determine the factors affecting the reading reliability of the codes, as well as the ranges of its stability under thermal exposure.
The codes applied to the brass surface are not resistant to thermal factors and therefore brass is not recommended as a material for applying marking codes.
Sivenkov, Influence of laser marking on the surface properties of steel AISI 304, Metalworking 4(106) (2018) 21-27
Zverkova, Influence of laser marking on changes of the structure and properties of austenitic steel, International Scientific Review 11(21) (2016) 38-40

Introduction Concrete can withstand temperatures of up to 200 °C without notable changes in mechanical and chemical properties.
Non-destructive acoustic methods such as impact-echo (IE) and acoustic emission (AE) can provide rapid non-destructive measurements of concrete defects and the condition of concrete degraded by various factors [4], [5], [6].
As the results of the strength of a three-point bending show similar values at temperatures between 20 °C and 200 °C, it seems that the heating of a concrete specimen up to a temperature of 200 °C has no influence on its mechanical properties.
The frequency of thermally degraded test specimens measured shifted to a lower frequency region to the point of the lowest mechanical properties of the 1000 °C set.
Effects of Water Jet on Heat-Affected Concretes.

In this paper, the degumming of corn bracts using chemical method is studied, through different degumming ingredient and technical, find highest degumming rate, at the same time keep some physical mechanical properties of fiber.
We can see results from Table 3, the factors of affecting corn bracts degumming from the primary to the secondary is: B→A→C.
Factors affect analysis.
Trend of factors of influence pretreatment effect are shown in Figure 1.
Table 3 Test scheme and results Factors Column number Test No.