Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: June 2020
Authors: Abdul Karim Bin Mirasa, Ismail Saad, Lim Chung Han, Nurul Shahadahtul Afizah Bt. Asman, Hidayati Bte Asrah, Eddy Syaizul Rizam Bin Abdullah, Nurmin Bolong
The other factor affecting durability in CEBs is abrasion arising from the kinetic energy due to rainfall.
Assessment the Mechanical Properties of Soil Cement Interlocking (SCI) Bricks: A Case Study in Malaysia.
Mechanical and hygrothermal properties of compressed stabilized earth bricks (CSEB).
Hygrothermal properties of compressed earthen bricks.
Influence of compaction pressure on the mechanical and acoustic properties of compacted earth blocks: An inverse multi-parameter acoustic problem.
Online since: October 2011
Authors: Julian R. Jones, Toshihiro Kasuga, Akiko Obata, Hiroki Ozasa
The process of electrospinning is affected by both system parameters and process parameters.
System parameters include polymer molecular weight and polymer solution properties such as viscosity and conductivity.
It is necessary to choose the appropriate materials for optimizing the mechanical and biomimetic properties of a fibre mesh, since the orientation and diameter of the fibres in electrospun scaffolds can influence cellular compatibility.
The content of SiV in SiPVH sample was regarded to be one of the important factors for possessing elasticity for both of 3D and 2D structured fibrous samples.
Kasuga, Electrospinning fibermat poly(L-lactic acid) mechanical strength tensile test bone-likeapatite formation, J.
Online since: December 2010
Authors: Yi Ming Wang, Shao Hua Zhang, Ji Fei Cai, Shu Qin Wu
The modern high-speed printing press has a higher requirement on mechanic properties and axial bounce.
In order to avoid interfering and guarantee the metering equipment complete and does not affect press' normal running, it’s necessary to select the non-contact type measurement mode.
As it is affected by the vibration of the sheet feed cylinder and the gear and so on, the value of the cylinder’s axial bounce of the first set is big.
Fig.5 The curve about the value of the transfer cylinder’s axial bounce change with the speed Conclusions 1) The value of the press cylinder’s axial bounce can be measured precisely for the dynamic states by the laser Doppler non-contact type vibration meter. 2) Cylinder's fit-up gap is the main factor that affects the value of the cylinder’s axial bounce.
[6] Wang Yiming, Zhao Jibin, Wu Shuqin: Proceedings of the International Conference on Mechanical Transmissions 2nd, Chongqing, China (2006), p.83-87.
Online since: March 2008
Authors: Qiong Wu, Sheng Yin Song, Ying Xi Wu, Feng Hui Wang
Introduction As is well known, the stress field in a structure component depends on the possible presence of a notch, and fatigue life may strongly by affected by geometric discontinuities[1-5].
Experimental Procedure Material used in this study is drilling bar steel J55 specimen, the mechanical properties of material are listed in table 1, in order to simulate the fatigue of thread connection, a round bar with circumferentially thread like notch were machined, such as shown in Figure 1, the elastic stress concentration of the specimen was calculated to be 2.56 for tension condition and 1.67 for torsion by the finite element method .
Table 1 Mechanical properties of the material σs/MPa σb/ MPa E/MPa µ G/GPa δ/% ψ/% n 547.44 748.07 203.83 0.286 79.25 26.81 63.18 0.171 Fatigue tests were conducted in a hydraulic fatigue machine (MTS 858) under tension /torsion with the stress ratio R=0.1, the frequency was 15Hz , the maximum stress of tension and torsion arranged to reach at same time .
Lee, Estimation methods for fatigue properties of steels under axial and torsional loading, Int J Fatigue 24 (2002) (7), pp. 783-793
Song, An expert system for estimation of fatigue properties of metallic materials, Int J Fatigue 24 (2002) (6), pp. 685-698
Online since: January 2012
Authors: Jian Min Zhou, Shuo Chen, Yong Zhao, Xiao Feng Wang, Yun Tan
(3) Analyses of the codes mentioned above reveal two main aspects of factors affecting flexural stiffness, which have also been concluded by previous test results, i.e. exterior load factor, Mcr /Mk, where Mcr and Mk represent cracking moment and service moment, respectively, and inner factors including initial elastic flexural stiffness, B0, and longitudinal reinforcement content, ρ.
Unlike them, the suggested formula here is easier to use for its simpler unified form and clearer concepts reflecting main factors' influence on flexural stiffness.
[13] Li Meiyun: The study of the mechanical property of HRB400 reinforced concrete members.
[14] Zhangting: The study of the mechanical property of HRB500 reinforced concrete members.
[19] Feng Hui: The study about the mechanical property of post-tensioned prestressed flexural members with HRB500 steel bars (M.Sc., Zhengzhou University, Zhengzhou, China 2007) (In Chinese)
Online since: December 2024
Authors: Thammaporn Thublaor, Phatarapol Thongsan
The development of multiphase bainitic/martensitic steel aims to enhance the mechanical properties and corrosion resistance compared to traditional pearlitic steel.
U75V is favored due to its mechanical properties that meet the demands of local railway infrastructure.
The steels include U20Mn-1 (granular bainite + martensite), U20Mn-2 (acicular bainite), and U75V (pearlitic structure), each selected for its unique properties relevant to railway applications in tropical climates.
Additionally, the metals will be characterized to study the corrosion behavior and the factors influencing their corrosion resistance.
These factors contribute to a more stable structure less susceptible to corrosion.
Online since: August 2013
Authors: Da Hai You, Yi Long Li, Kai Pan, Ke Tian, Ke Wang
Transformer failure is usually caused by insulation aging, the external accessory failure, overload and other factors.
The Analysis of Transformer’s Fault Factors Development Mechanism of Internal Latent Fault.
During the operation process, the chemical structure of internal insulating materials is changed by the influence of heat, electricity, water, oxygen etc, which affects its mechanical properties, electrical properties and thermal properties [10].
Because of the influence of the uncertainty factors (weather, design defects, human factors etc), the fault of transformer accessory is usually the sudden and random fault.
These factors increase the difficulty to estimate the transformer outage probability.
Online since: June 2014
Authors: Khuzaimah Nazir, Siti Fadzilah Ayub, Ahmad Fairoz Aziz, Ab Malik Marwan Ali, Muhd Zu Azhan Yahya
However, the main drawbacks of PMMA are its poor mechanical properties.
Latif et al. reported that modifying PMMA with natural rubber (NR) was improved mechanical property but the blend film was not homogenous due to phase separation observations [12] Study on modified PMMA with NR has been done by other researchers and founded that PMMA –grafted-NR could improved the mechanical properties problems [13-15]. 30% poly (methyl methacrylate)-grafted NR (MG30) provides a good criterion to act as a polymer host by having of oxygen atom that possesses a lone pair electron, have a low glass transition temperature (Tg) of -62°C, soft elastomer characterization at room temperature and good elasticity [16].
This modification is expected to reduce the aging effect with the reduction of C=C without affected the polar functional group in MG30 structure.
The –C=O band at 1729 cm-1 of MG30 is not affected by the epoxidation reaction.
This is possibly due to the effect of kinetic energy between ion affected from the increasing temperature i.e. energy that is required for migration of ions has been reduced with the aid of kinetic energy.
Online since: September 2018
Authors: Rashid R. Sharapov, Talgat R. Gabdullin, Evgeny V. Kharlamov
For the purification of wastewater and harmful impurities, mechanical, chemical, physicochemical and biochemical methods are used.
In turn, slurry storage facilities occupy significant areas and adversely affect the atmosphere and the lithosphere.
Also, dry separation is the least energy-intensive, since it is based on the natural property of the magnetic attraction of iron ores [5-7].
The recovering capacity of the fluidized bed separator of the dry separation depends on the characteristics of the magnetic system, the physico-mechanical properties of the particles of the separated mixture, and also the geometric parameters of the operating zone.
To study the dependence of the total extraction factor of magnetic particles on the thickness of the initial layer of the separated mixture, we set d = 29.8 μm, αi = 15 deg, vk = 0.02 mps in formula (2).
Online since: December 2009
Authors: Wojciech Z. Misiolek, William R. Van Geertruyden
Combined numerical simulation and microstructure characterization for prediction of physical properties in extruded aluminum alloys W.
This phenomenon is present in many structural aluminum alloys extrudates and its presence should be eliminated or at least significantly reduced because of the mechanical properties and aesthetic points of view.
Both mechanical properties and surface quality of an extrudate can be affected by PCG formation.
In general, the PCG structure can be controlled by several factors: monitoring the exit temperature and extrusion speed, increasing or decreasing recrystallization inhibiting elements, and maximizing the extrusion ratio to obtain a critical strain.[11] Previous investigations have attempted to understand and predict PCG formation.[12-18] Many times, PCG formation is attributed to the strain gradient inherent in the extrusion process.
Showing 17931 to 17940 of 25958 items