Search results

This research was study the effect of resistance spot welding process on physical properties.
Factors affecting the tensile shear are the most welding current of 12,000 amp., welding time of 8 cycle and electrode force of 2.5 kN. were tensile shear of 9.83 kN.
Because if the selection condition on access to inappropriate, would have affected the mechanical property which reduced the strength of work pieces.
Use the experimental design is a full factorial design (2k) to be the main factors effectors affecting significantly.
Factors affecting the nugget size of a maximum were welding current of 12,000 amp., welding time of 12 cycle and electrode force of 1.5 kN.

Microstructural and Mechanical Properties of the Intercritically Reheated Coarse Grained Heat Affected Zone (ICCGHAZ) of an API 5L X80 Pipeline Steel J.
The exact determination of welding parameters is necessary and besides the main variables such as heat input, the cooling time between 800 to 500oC (Dt800–500) can determine the microstructural transformation during welding therefore affecting the mechanical properties of the welded joint.
Table 1 list the chemical composition and mechanical properties (yield strength and ultimate tensile strength) for both steels.
Table 1- Chemical Composition in wt% and Mechanical Properties.
Not only the volume fraction and carbon content of the MA constituent can have an influence on the mechanical properties, but also its morphology.

Consequently it’s physical and mechanical properties can be reduced, affecting their use.
Introduction Wood is a material that can be employee in several purposes, especially in construction, because it has desirable physical and mechanical properties to withstand the stresses imposed on it at the moment of their use.
Therefore, mechanical and physical properties are reduced, affecting its use.
The variability of the strength along the length of the drilling is natural and due to the presence of early and late logs, tree growth conditions, among other factors.
Besides the preservative treatment appropriate, exposure conditions of the timber columns and efficiency in the construction details were also deciding factors as to guarantee the durability of timber column.

Microstructure and Mechanical Properties of Welded Joints of Cr18Ni30Mo2Al3Nb Alloy Rui Luo, Xiaonong Cheng*, Guifang Xu, Dongsheng Li, Shun Guo, Qi Zheng, Cheng Wang, Nan Zhang School of Material Science and Engineering, Jiangsu University, Zhenjiang,Jiangsu, 212013,China; Corresponding author:xncheng6009@sina.com Key words: nuclear power; Fe-Cr-Ni alloy; welding; mechanical property; microstructure Abstract:In this present study, A comparative research on the mechanical properties of the dissimilar welded joints of 800H and Cr18Ni30Mo2Al3Nb was investigated.
Therefore, it is necessary to improve the mechanical properties of 800H.
On the other hand, the welded joint is also a key factor for controlling the properties of the heat pipe stream generators.
Then, microstructure characteristicsand mechanical properties of joints were investigated comprehensively.
Tensile properties.The room-temperature and high-temperature tensile properties of dissimilar welding joints were measured, respectively.

The mechanical properties of the ABS FDM 3D-printed parts are not yet determined or estimated prior printing.
The identified mechanical properties to be applied in the printed model ensures that the 3D model will be beneficial for each engineering and non-engineering applications [5-8].
Using Taguchi method, the study was conducted by means of different experimental factors using the Orthogonal Arrays.
The objective of robust design in Taguchi Methodology is to find the controllable factors for which the uncontrollable factor or noise factors has a minimal effect on the ABS FDM 3D-printed specimen’s tensile properties.
Stergio, “Mechanical Properties of 3D printed polymer specimens”, 2018 [12] ASTM D638-14, Standard Test Method for Tensile Properties of Plastics, ASTM International, West Conshohocken, PA, 2003, www.astm.org [13] Taguchi, G., Chowdhury, S., Wu, Y., 2005.

Presence of this phase leads to the mechanical and physical properties of the alloy reduce [5].
The graphs are constructed from the average values of five measurements of mechanical properties.
Such dependences of the mechanical properties are observed for a thickness of 0.25 mm and for a thickness of 0.33 mm.
An experimental evaluation of the surface roughness of a sheet of an aluminum alloy AA6022 with a multi-cycle tensile and compressive plastic deformation [15] showed that the texture, direction of the test and degree of deformation of flexure/extension are significant factors affecting the surface roughness of the product after bending.
Grechnikov, Multi-Cycle Rolled Aluminum Alloy 3103 Sandwiches: Mechanical Properties and Stamp Ability, 129 (2017) 02021

Between the matrix and reinforcement the wettability is bad and interface combination is not solid, affecting the mechanical properties of the material.
The tensile strength and tensile rate were tested on a CSS-2210 mechanical properties tester.
Mechanism analyses indicated that the properties, improvement was caused by several factors which worked together.
Kok, Production and mechanical properties of Al2O3 particle-reinforced 2024 aluminum alloy composites.
Wang, Effects of CeO2 additive on the microstructure and mechanical properties of in situ TiB2/Al composite.

Effects of the Size of Wood Flour on Mechanical Properties of Wood-Plastic Composites Haibing Huang1,2,a, Huhu Du1,b,Weihong Wang*1,c,Haigang Wang1,d 1Key laboratory of Bio-based Material Science and Technology of Ministry of Education, Northeast Forestry University,Harbin,150040 2Heilongjiang Wood Science Research Institute, Harbin, 150081 ahuanghb84@qq.com, bduhuhu521@126.com cweihongwang2001@yahoo.com.cn, dhgwang@nefu.edu.cn Key word: wood-flour; mesh number; HDPE; composite; mechanical properties; Abstract: In this article, wood-plastic composites(WPCs) were manufactured with wood flour(80～120mesh, 40～80mesh, 20～40mesh, 10～20mesh) combing with high density polyethylene(HDPE).
According to ASTM D 7031 (Standard Guide for Evaluating Mechanical and Physical Properties of Wood-Plastic Composite Products) bending strength of composites was tested.
According to GB/T 1043.1-2008 (Plastics—Determination of charpy impact properties—Part 1:Non-instrumented impact test)impact strength was tested.
However, when mesh number of wood flour changed from 80～120 mesh to 10～20 mesh, value of tensile modulus increased from 5.18GPa to 6.65GPa, an increase of tensile modulus was 28.4%, this indicated that the size of wood flour had the same effect on tensile properties as on flexural properties of WPC.
The factors affecting on tensile strength of composites were mesh number and surface roughness of wood flour [6].

Effect of the HTP to X80 Ferrite Steel Structure and Mechanical Properties Yongjie Ma1, a，Guangliang Zhang2, b 1Shangqiu Vocotional and Technical College, Shang Qiu 476000, China 2HaiBo measure Shangqiu Co. , LTD.
The structure and mechanical properties of pipeline steel X80 through HTP rolled into 16mm thick slab were tested.
X80 grade pipeline steel can obtain good mechanical properties but also can effectively reduce its smelting and rolling cost[2].
Through study of the microstructure and mechanical properties, ductile-brittle transition temperature factor, and analyzed the morphology of precipitates in steel, it built a theoretical and practical basis for the development of the scene of rolling process.
Figure 2, distribution pattern of precipitation samples Analysis of Mechanical Properties From Table 1, we can see X80 grade pipeline steel has good mechanical properties.

The Mechanical Properties of the Lower Limb Socket Material Using Natural Fibers: A Review Sumeia A.
There is a significant improvement in the mechanical properties of compounds.
Table 1 Mechanical properties of natural and synthetic fibers[29-30].
They showed that changing the matrix and type of reinforcement significantly affected the measured properties [54].
The mechanical properties were calculated by tensile test and the bending test according to ASTM.