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Online since: October 2008
Authors: Claudio Testani, Roberto Montanari, T. Valente, Riccardo Donnini, Paolo Deodati
The mechanical properties of the material, in as-fabricated condition and after heat treatments, have been investigated by instrumented indentation (FIMEC), dynamic modulus, tensile and fatigue tests.
The main target of this work was to assess how mechanical properties are affected by long-term heat treatments.
Since high-temperature X-ray diffraction (HT-XRD) evidenced that lattice thermal expansion and residual stresses depend on the environmental conditions during heating, further FIMEC tests have been carried out to assess whether atmosphere affects other mechanical properties, in particular the yield stress.
Another factor contributing the stability of the mechanical properties after long-term heat treatments is grain size which substantially does not change.
Dynamic measurements show that Young's modulus of composite is always higher (∼ 20%) than that of the matrix alloy up to 600°C. 2 - Tensile and fatigue tests show that mechanical properties substantially were not affected longterm exposure to temperatures of potential service for Ti-MMC materials.
Online since: August 2017
Authors: Rudeerat Suntako
Furthermore, the cure characteristics, rubber mechanical properties and permanent set were investigated.
The obtained results are found that the ZnO nanograins significantly affected to cure characteristics, rubber mechanical properties and permanent set.
Besides ZnO have many beneficial effects on the mechanical properties of rubber product.
The mechanical properties such as hardness, tensile strength and elongation at break were determined.
Table 1 The cure characteristics and mechanical properties.
Online since: June 2010
Authors: Guo Nian Yao, Jun Hu Wei, Hao Sun, Guo Ji Sun
Research for an Automatic Measurement System for Centroidal Deviation of Projectiles Based on Three Points Method Guonian Yao 1,2,a , Junhu Wei 1,b , Hao Sun 2,c and Guoji Sun 2,d 1 Systems Engineering Institute, Xi'an Jiaotong University-China 2 The Huayin Ordnance Test Center-China a gnyao168@126.com, bjhwei@sei.xjtu.edu.cn, cjiaodong@stu.xjtu.edu.cn, dgjsun@sei.xjtu.edu.cn Keywords: automatic measurement, measuring efficiency, working principle, quantitative analysis Abstract: In order to improve the measuring accuracy and efficiency of projectiles' centroidal deviation, the working principle and the relevant calculation formulae based on three points method are described in detail, the main factors affecting precision are discussed and quantitative analysis on precision of the equipment is made.
Fig.3 Schematic diagram of locating with arc Fig.4 Mechanical structure diagram of equipment C) Method to rotate 90° Precisely.
Research on method for measurement of the parameters about the properties of warhead's mass[J].
Journal of Mechanical Strength, 2002,24(4):623-625( in Chinese) [3] Qian Yongbo, Wu Bin.
Mass Properties Measurement Handbook[J] .
Online since: November 2024
Authors: Syed Mohammed Saad, Ahmed Ibrahim Mohammed Al Hashmi, Qusai Said Nasser Alshaaibi, Abdullah A.K. Al-Maskari
Davoodi et al. discussed eight concepts with six criteria, converting qualitative factors to quantitative values in loops one to five.
Type of material and duration of exposure are some of the factors affecting water absorption with temperature and additives.
The use of polypropylene in bamboo fibre composites and their mechanical properties–A review. 
STUDYING THE MECHANICAL PROPERTIES OF HYBRID COMPOSITES USING NATURAL ADDITIVES WITH EPOXY.
Incorporation of palm fiber to enhance the mechanical properties of epoxy.
Online since: May 2012
Authors: Mirela Toth-Taşcău, Dan Ioan Stoia, Cosmin Locovei, Aurel Raduta
Using of recycled powder affects the part structure and mechanical properties.
Due to the sintering process, the parts fabricated by SLS technology have good dimensional accuracy and mechanical properties.
The powder properties and process parameters have a great influence on the dimensional accuracy, roughness, and mechanical properties of the SLS parts.
Thus, future works will investigate the influence of the energy density on the mechanical properties of the studied samples.
Lago, Statistical evaluation of laser energy density effect on mechanical properties of polyamide parts manufactured by selective laser sintering, J.
Online since: July 2016
Authors: Elisa Maria Ruiz-Navas, Elena Gordo, Leandro Bolzoni
Among them, Ti presents a very interesting combination of physical and mechanical properties [2].
Jaffee, Heat treatment and mechanical properties of Ti-Fe alloys, Trans.
Kim, Mechanical and oxidation properties of Ti-xFe-ySi alloys, Mater.
Qian, Sintering of Ti–10V–2Fe–3Al and mechanical properties, Mater.
Hanawa, Mechanical properties and microstructures of new Ti-Fe-Ta and Ti-Fe-Ta-Zr system alloys, Mater.
Online since: December 2014
Authors: Man Quan Zhao, Yue Qin Liu, Fei Liu, Shuai Dong, Xu Zhang
Finally is the sowing depth, the factors and agronomic seeds, soil fertility, soil humidity etc.
Therefore, air suction type no tillage seeder experimental study in maize stubble to carry out vibration test in this paper, in order to obtain the main factors affecting of vibration and vibration characteristics of the seed metering device in the sowing time, So as to effectively prevent or using vibration improve sowing quality and providing reference of indoor test.
Experimental factors and levels are shown in table 1.
This shows that the main factors affecting the seeding machine vibration is surface conditions, namely the surface roughness is the significant factor causing the vibration seeder, then forward speed.
[2] Zhang Xiaodong,Li Chenghua,Tang Qiuyan, et al.Vibration properties of spade punch planter of maize[J].Journal of Shenyang Agricultural University,2009,40(6):732-735
Online since: February 2022
Authors: Viacheslav V. Shirokov, K. Torgonin
The main factors that may influence the degree of thinning were identified.
Experimental calculations were performed in Deform-3D with a variation of these factors.
Next, the main factors that could influence the degree of wall thinning were identified. 1.
The radius affects the thinning of the wall due to the fact that it directly affects the "braking" of the workpiece.
Accordingly, the "braking" of the workpiece is influenced more by its mechanical grip on the surface of the die than by the properties of contact of the workpiece with the tool.
Online since: March 2014
Authors: Antônia Amanda da Silva César, Ricardo Gabriel de Almeida Mesquita, Lina Bufalino, Lourival Marin Mendes, Laurenn Borges de Macedo, Thiago de Paula Protásio
Mechanical properties evaluated were parallel compression (CP), static bending (MOE and MOR) and internal bonding (IB).
Several studies, using wastes from agriculture as raw material in the production of panels, have already been performed. [19] concluded that the addition of coffee husk in particleboard of Eucalyptus urophylla affects its physical and mechanical properties directly. [9] were able to replace up to 50% of the wood in particulate wood panels with coffee husk and halls. [25] added oat hulls in particleboard of Eucalyptus grandis and obtained values of physical and mechanical properties consistent with national and international standards. [12] developed a panel produced from sugar cane bagasse and polyurethane based adhesive from the castor oil bean with mechanical properties for commercial and industrial use.
TS could be affected by several factors such as insufficient resin content and distribution, poor compatibility between substrate and adhesive, and adhesive properties [26].
Table 2 presents the average values for the mechanical properties of conventional particleboards.
Effect of the incorporation of coffee husks on the physic-mechanical properties of Eucalyptus urophylla S.T.
Online since: October 2010
Authors: Jaharah Abd Ghani, Mohd Shahir Kasim, Mohd Amri Sulaiman, Gusri Akhyar Ibrahim, Che Hassan Che Haron, T.K. Soon
Feed rate was found to be the most significant parameter affecting the surface roughness.
This material offers high yield, tensile, and creep-rupture properties at high temperatures and corrosion resistance [2], thus, Inconel 718 has gained wide acceptance in aerospace industries that require corrosive environment, pitting and crevice corrosion resistance [3].
The drawback of Inconel 718 excellent properties was the the most difficult to machine material.
Good mechanical properties together with work hardening lead to increase the cutting force and cause many problems that are contributing to early tool failure.
Based on a 95% confidence interval, feed rate, f, is statistically significant affecting the surface roughness, since their p-values are less than 5%.
Showing 4911 to 4920 of 25896 items