Search results

The main reason for the selection of non-metallic joints (DWJ) is usually based on previous welding engineering design considerations by considering the following factors: 1) Factors considering economic or commercial aspects and efficiency, 2) Factors to consider the application of the required material properties, the required base metal which is advantageous such as mechanical properties, ductility, thermal expansion, corrosion resistance, and others.
Economic factors, for example, if all flow line pipes are stainless steel, the price will be expensive.
The mechanical properties of tensile strength, bend test, and microhardness.
The carbon steel base metal area has improved mechanical properties.
c) Carbon steel has improved mechanical properties while in the area of stainless steel, it has decreased.

In addition, such structures exhibit better mechanical properties than strut-based ones with similar porosities.
Moreover, CE caused wall thickness (Fig. 4) and mechanical properties degradation.
USV treatment completely removed powder from inside (Fig. 4) and did not significantly affect the wall thickness and mechanical properties, Table 2.
The powder was removed by PRS with USV support, which did not affect mechanical properties of the FGPS.
Certain amount of through-hole defects in the WT- manufactured sheet-based structures would not generate problems for the implants as long as it does not affect the mechanical properties.

Wear is a complex problem, which cannot be easily predicted from basic mechanical properties (hardness and fracture toughness), tribological studies of the developed materials are indispensable [2].
Tribological performance of the sliding pairs depends on many factors: environmental conditions, sliding velocity, load, surface quality, microstructure of the mated materials.
The mechanical properties of LPS-SiC are strongly affected by its microstructure, which can be controlled by the phase transformation of SiC.
Belosi, Effect of annealing treatments on microstructure and mechanical properties of liquid-phase-sintered silicon carbide, J.
Seo, Influence of small amount of sintering additives on unlubricated sliding wear properties of SiC ceramics, Ceram.

Diamond is considered as an ideal coating material for hard metals due to its extraordinary mechanical, chemical and thermal properties [1, 2].
This is due to its unique properties such as, heat conductivity, wear and corrosion resistant, nearly similar lattice match with diamond and electro catalytic properties [7].
Moreover, coating characteristics and mechanical properties are easy to be controlled by manipulating the deposition parameters such as bath temperature, current density, pH, gap between electrodes or by adding special additives to the electrolytic solution [12].
One of important factors that affect quality of the output of the electroplating process is the gap between anode and the cathode.
Varying the distance between electrodes will result in different layer thickness that may also contribute in affecting the coating hardness.

Sliding surface and safety factor is obtained based on the physical and mechanical parameters of submarine sedimentary soil, plastic strain and equivalent plastic strain will be given.
(4) The potential risk is greater, which not only be able to destroy a variety of marine engineering facilities, but also even trigger a tsunami, resulting in a significant loss of life and property
(a) Frame 2 (b) Frame 11 (c) Frame 44 (d) End Fig.3 Distribution of when Fs =1.83 The comparison of the safety factors obtained by two instability criterion is shown in Table 2.
Table 2 Stability safety factors comparison of land slope Instability criterion Error (%) ① 1.82 0.55 ② 1.83 -- Submarine Slope Stability Analysis Results For the submarine slope, the safety factors with the two criterions are respectively 1.205 and 1.215.
(a) Frame 5 (b) Frame 7 (c) Frame 11 (d) End Fig.5 Distribution of when Fs =1.215 The comparison of the safety factors is shown in Table 3.

These factors should be taken into consideration and remembered its effects for mould design in order to improve die life, further a new direction and thinking of liquid forging die life design criterion will be given. 1.
It was also proved that the process parameters such as the filling pressure, the filling velocity and pressure holding time had no obvious effect on the squeeze chamber temperature change, but had obvious effect on parts performance in this experiment, in which the filling pressure had the greatest impact on the parts mechanical properties, and the pressure holding time and pouring temperature took second place.
The filling speed had the least effects on the mechanical properties of the parts.
Conclusion In this paper, the influence factors of liquid die forging die life is discussed through theoretical analysis combined with the test, taking the key common parts of indirect liquid forging squeeze head and squeeze chamber as an example.
Effect of pressure on microstructures and mechanical properties of Al-Cu-based alloy prepared by squeeze casting[J].Transactions of Nonferrous Metals Society of China, 2007, 17(3):496-501

Its physical and mechanical properties are shown in Table 1.
The physical properties of pebbles aggregate are shown in Table 4.
Table 1 Physical and mechanical properties of cement Test items Initial setting Final setting Compressive strength (MPa) Flexural strength (MPa) 3d 28d 3d 28d Test value 135min 195min 27.0 48.3 5.2 9.1 Table 2 Parameters of pebble concrete mixing ratio design in each cubic meter No.
Wu, Study impacts of aggregate for mechanical property of high performance concrete, Tongji University, Shanghai, 2001
Wu, et al, Effect of coarse aggregate type on mechanical properties of high-performance concrete, Cement and Concrete Research, 31 (2001) 1421-1425

., Dnipro, Ukraine, 49000 akolokhov.viktor@pgasa.dp.ua Keywords: concrete, construction, structure, condition, evaluation, properties.
The results of the study of the influence of some factors on the results of measuring the dissemination time of ultrasonic vibrations are presented.
The use of ultrasonic measurements to obtain absolute values of the properties of concrete is not adequate.
Materials and Methods To determine the properties of concrete structures the most widely are used ultrasonic devices NT.
The use of ultrasonic measurements to obtain absolute values of the properties of concrete is not adequate.

The influence of the fixed stress amplitude on properties of liner/propellant was also studied.
Long-term environmental exposures affect a missile’s performance and reliability as component material properties degrade, and this degradation negatively impacts critical performance parameters.
The interface property of liner and propellant is the main factor to affect the work of solid rocket motor.
This is because solid propellants possess a number of specific properties which can significantly affect the material's fatigue mechanism.
[6] Yin Hua-li and Wang Qing-he., “Factors of influencing the bond characteristics at interface”, Journal of Solid Rocket Technology, vol. 21, Jun. 1998, pp.40-46

According to the parameters of designed submerged floating tunnels at home and abroad, main factors that affect the dynamic response of submerged floating tunnel were analyzed by numerical method.
Effects of fctors on seismic response of submerged floating tunnel Mechanical property of submerged floating tunnel is affected by many factors.
The purpose of this paper is to reveal the relationship between factors and seismic response of submerged floating tunnel by analyzing the effects of several factors on the response of system, which may provide evidence to the optimization of the structural behavior.
In factor analysis, it is generally assumed that only one parameter of the structure change, the others remain unchanged.
Among factors that affect the internal force and deformation of submerged floating tunnel, tether spacing is very active.