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The paper uses the finite element method to simulation welding heating and cooling of bolted-welded connections impact on the bolt pretension and analyze node capacity to be affected to provide a theoretical basis for the optimal design of the node.
Ciro Faella etc. analyzed the test and summarized the influencing factors of high-strength bolts pre-tension in Italy[1].
Song Ming etc. used orthogonal experiment to study pre-tension loss of high-strength bolts of steel structures from four aspects of the time after the final screw, bolt diameter, plate thickness and ambient temperature and studies suggest that the final time has biggest affect on the pre-tension loss [3].
Simplify the bolt connecting not considering the material property difference of the bolt head, washer and bolt rod.
Finite element analysis on temperature mechanical properties of high strength bolt connection [D]. ​​

Numerous studies have found that the BFRP armature has high corrosion and chemical resistance, high tensile strength and a number of properties that make it different from metal armature [2-4].
The physical and mechanical properties of the specified types of armature are given in Table 2.
Mechanical characteristics of armature for samples of beams.
The physical and mechanical properties of both types of reinforcement had a significant influence on the deflection of hybrid reinforced beams (BMB, BMBD).
Exploring the deterioration factors of RC bridge decks: a rough set approach.

Different laser parameters and the interactional production can affect the barcode grade profoundly.
He found that contrast and print growth factors limited the laser mark achieving a higher grade.
The important factors often being investigated include laser parameters (e.g., frequency, power, and scanning speed) and properties of the substrate (e.g., materials chemical composition).
It can get the deeply understanding and knowledge about the connection among laser parameters and substrate properties with barcode quality.
Li: Metal Metallographic Map (Mechanical Industry Press, Beijing 2006) , In Chinese

Austenitic stainless steels are considered materials with excellent corrosion resistance, and with acceptable mechanical properties.
Their corrosion properties make them suitable for external use.
They found, that the concentration of a nitric acid markedly affected some electrochemical characteristics of the tested steels.
The mechanical properties of the studied steel are shown in Table 2.
Cr Ni Mo Mn N C Si P S Ti Fe 16.5 10.6 2.12 1.69 0.012 0.04 0.43 0.026 0.002 0.41 balance Table 2 Mechanical properties of experimental material.

However their usage is limited due to its thermo oxidative and cold flow properties.
It is widely know that temperature is significantly affect lubricant degradation.
In developing new lubricants, finding suitable and compatible additives to enhance base oil properties is another difficult task to be accomplished.
Erhan, Oxidation, friction reducing, and low temperature properties of epoxy fatty acid methyl ester.
Nair, Coconut oil as base oil for industrial lubricants—evaluation and modification of thermal, oxidative and low temperature properties.

The advantage of the PU foam method was the achieved high pore interconnectivity, but the mechanical properties of the porous ceramics were rather poor due to the high macroporosity and the high microporosity.
The defects must be repaired or removed for higher mechanical strength.
These crack-like defects would affect the mechanical strength of the struts and also the compressive strength of the macroporous structures.
The introduction of the porous biodegradable filler was a low temperature process, which would not affect the mechanical strength of the macroporous structures, but could impart additional biological functionalities.
For example, a drug or a growth factor could be loaded and/ or a type of cells could be carried by the porous structures.

The mechanical property index of m172 piston aluminum alloy material is that the tensile strength of piston skirt at 25 ℃ is 280mpa and the elongation is 1%.
The area defect of piston ring affects the stress and damage tolerance of piston.
Wu, Effects of annealing temperature on the mechanical properties and sensitization of 5083-H116 aluminum alloy, Proc.
Case, Mechanical Properties of 5000 Series Aluminum Alloys Following Fire Exposure, TMS 2016 145th Annual Meeting& Exhibition, Springer, 2016, pp. 657–664
Tong, Effect of annealing temperature on microstructure, mechanical properties and corrosion behavior of Al-Mg-Mn-Sc-Zr alloy, Appl.

An analysis was performed by Plastic Insight, which is used for the determination of flow properties of thermoplastic materials.
A good knowledge of flow properties of these materials enables a very good starting position for the design of thermoplastic products made by the injection moulding technology [1,2].
Since the bulk temperature is related to such factors as viscosity, working pressure, post-pressure and cooling, it is better when bulk temperature is higher because it reduces the fill time and thus the working cycle is shortened.
Bulk temperature is a very important factor in injection moulding because it provides quality moulded parts and their properties.
Dulebová, The utilization of gamma radiation in the examination of mechanical properties of polymeric materials, Metalurgija. 51 (2012) 245-248

The results of numerical simulation show that the shape of drawing tools and process conditions have a significant influence on the forming process and final shape and properties of the workpiece.
The reliable results of the forming process affect these factors [2]: - dimension and material formability of input feedstock, - technological parameter of forming (drawing velocity, method of lubrication and type of lubricant) - the geometry of the forming tools (rifled mandrel) There are several approaches on how to predict factors that influence of the forming process.
Using FEM analyses to determine the initial tube size that gives the appropriate mechanical properties after drawing can be found in some works [7].
Low carbon steel, is now the most common form of steel of tubes because its price is relatively low while it provides material properties that are acceptable for the cold drawing process.
As the temperature stays lower in cold drawing, the forming material properties do not vary and can, therefore, be supposed to be independent of the temperature variation.

This comprised four factors, three of which were at three levels and one at two levels and involved tool coating, cutting speed, feed rate and machining environment.
The stack is then assembled and temporarily held together (mechanically) prior to hole reaming, although even here the disparity in workpiece mechanical properties (e.g. different elastic modulus, thermal expansion coefficient etc.), often presents an obstacle towards achieving the required tolerance level.
No analysis of interactions between the factors was performed.
• Feed rate and environment condition was also found to be prevalent factors in torque generation for the Ti and Al layers of the stack.
While feed rate had an overwhelming 72% influence in the former material, environment condition was the principal variable affecting torque with the latter