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Online since: October 2012
Authors: Wen Cai Xu, Jian Dong Lu, Gai Mei Zhang
Dynamic cushioning performance is one of the important properties to evaluate the gasbag packaging as buffer packaging material.
The Mechanical Analysis of Gas inside Air Bags in Impact Process Cylindrical air bags are taken as an example to analyze the mechanical changes of gasbags under impact process, the changes of gasbags shape is shown in Fig.1[3].
Except static stress, one of the main factors, which affects the gasbags X, is the tensile property of the film which products the gasbags.
In the process of using gasbag packaging, excessively high gas pressure affecting the inner wall of gasbag packaging will cause the bursting.
Du: The Mechanical Calculation and Technology Optimization of Ship Launching with Airbags (MS, Wuhan University of Technology, China 2008), pp. 6-9.
Online since: June 2010
Authors: Wiktoria Ratuszek, Janusz Ryś
That is why the processes governing the texture formation in duplex steels are supposed to change in comparison to single phase steels affecting final rolling textures of ferrite and austenite.
Crystallographic textures and a band-like morphology of ferrite and austenite are important structural factors since they exert a significant influence on further treatment and therefore determine properties of final product.
That is why the factors affecting deformation behavior and formation of rolling textures in modern grades of duplex stainless steels are the subject of permanent interest [2,5,8,9].
The thermo-mechanical treatment included hot-rolling and solution annealing at the temperature range 1150-1200°C.
The important factor affecting a development of ferrite and austenite rolling textures is a specific morphology of both phases formed upon processing.
Online since: September 2011
Authors: Ling Xu, Jun Hu, Nu Wen Xu
Fault is one of the most important factors affecting tunnel instability.
Hereby, Weibull distribution is employed to define the material properties, and it can be described as following: where u is the mechanical parameter of the element such as strength and elastic modulus etc.
It can be seen from the properties of the Weibull distribution (Fig. 3), a larger value of m implies a more heterogeneous material and vice versa.
The elements in the specimen must be sufficiently small to reflect the heterogeneous mechanical properties of materials at the meso-scale and still provide conditions under which a current computer can perform the analysis efficiently [10].
Applied with RFPA-SRM, both factors of safety (Fs=1.695 without fault and Fs=1.538 with fault) and the corresponding potential failure regions of the drain tunnel have been obtained.
Online since: February 2018
Authors: Jian Liu Zhu, Chuan Wang, Xiao Yi Jin, Zhi Peng Chen, Chunyun Ji
It is not only related to the surface manufacturing accuracy, but also related to the material and its properties.
The 45 steel after quenching and tempering is applied to different structural parts, which can show good comprehensive mechanical properties.
It is mainly used to evaluate the friction and wear properties of lubricants, metals, plastics, coatings, rubber and other materials.
The first experiment: In order to study the friction properties, carrying out the experiment at room temperature and under oil lubrication.
Study on the Tribological Properties of Intermetallic MoSi2/45 Steel under Oil Lubrication[J].
Online since: December 2023
Authors: Qudeer Hussain, Panumas Saingam, Ali Ejaz, Akrar Min
Research has shown that both the proportion of replacement and the properties of recycled aggregates play a significant role in affecting the tensile strength, compressive strength, and bonding characteristics of concrete.
In certain cases, recycled aggregate concrete exhibits lesser mechanical properties when compared to concrete made with normal aggregates.
In specific instances, recycled aggregate concrete (RAC) displays inferior mechanical properties compared to normal aggregate concrete (NAC) due to factors such as the diminished strength, higher water absorption, and increased porosity of RCA, as noted elsewhere [9].
Kobrosli et al. [11] investigated factors that could affect the bond between concrete-strand and concrete-duct in reinforced concrete (RC) slabs and beams while the considered grout was Sika AnchorFix.
Material Properties.
Online since: November 2014
Authors: Khairul Salleh Basaruddin
A stochastic analysis of multi-scale problem in honeycomb microstructure was introduced in this paper to determine the variation of macroscopic homogenized properties considering uncertainty of micro-property.
The numerical results showed that even with minor geometrical defect could affect the macroscopic properties.
The macroscopic homogenized properties of porous materials are supposed to be influenced by the variation of geometrical information X and microscopic mechanical properties D, as written in eq. (1).
It is because many uncertainty factors may arise at microscale could influence the dispersion of macroscopic property.
S., Takano, N., Akiyama, H., and Nakano, T., Uncertainty modeling in the prediction of effective mechanical properties using stochastic homogenization method with application to porous trabecular bone, Mater.
Online since: October 2012
Authors: Hong Wei Ji, Chuan Min Yang, Peng Luo
The physical and mechanical properties of wheat straw particleboards bonded by UF were improved as a result of the removal of the hydrophobic wax layer from the straw surface [7].
Besides the pretreatment, the hot press process also plays an important role in wheat straw particleboard preparation in terms of physical and mechanical properties.
Manufacturing conditions, including hot-press temperature, hot-press time, resin application ratio, and hot press pressure were optimized for particleboards’mechanical properties by using 4 factors×3 levels, L9 (34) orthogonal experimental design (Table 1).
In Table 3, the standard deviation values for MOR display that the influential extent of the affecting factors to MOR is resin application ratio > hot press pressure> hot press temperature > hot press time.
The MOE standard deviation indicates that the influential extent of the affecting factors to MOE is resin application ratio > hot press temperature > hot press pressure > hot press time.
Online since: October 2014
Authors: Jian Zhang, Tao Hong, Jun Ai, Yan Yuan Gao, Qing Yu Liang
Due to the fact that the scholars have put few emphases on the influence of corrosive environment which inevitably affects the fatigue property of steel bridge, an experiment design of corrosive and fatigue property of steel box girder with the specific environment controlling equipment is taken into account.
In china academy of railway sciences the mechanical characteristics of the orthotropic steel bridge panel by the static experiment of the real bridge, dynamic experiment of the real bridge, and the full-scale model static test were all studied [8-9].
So it has important engineering significance and practical significance to study the fatigue properties of the steel box girder of the bridge in the corrosion environment.
The study is the fatigue property of steel box girder in corrosive environment, and the steel box girder of contact corrosion medium is air, therefore, the corrosion of steel box girder is mainly affected by atmospheric corrosion, namely due to the moisture in the air, oxygen, and corrosive medium to cause chemical and electrochemical reactions.
So this article will select the ocean atmospheric as the corrosion of the corrosion environment, but considering the existing laboratory equipment and other factors, the specific environment controlling equipment called multi functional corrosive sprayer equipment shown in Fig.3 is utilized to imitate the marine atmosphere corrosion.
Online since: September 2017
Authors: D.V. Cherkasov, Yuriy V. Yurkin, V.V. Avdonin
Study of Physical and Mechanical Properties of Non-Polar Rubber-Based Sealants Depending on Filler Type and Volume V.D.
The properties of the fillers are shown in Table 1.
Properties of Fillers.
The change of physical and mechanical properties is shown in Fig 1-7.
Chen, Effect of Filler on the Compression Set, Compression Stress-Strain Behavior, and Mechanical Properties of Polysulfide Sealants, J.
Online since: April 2014
Authors: Zhen Fan, Tong Qi Li, Xiu Jun Liu, Shu Jie Sun, Zhi Hai Feng
Material fillers was connected to a whole, such that composite had better mechanical properties and other properties.
The primary aim is to illustrate the influence of particle size of graphite flake on microstructure, mechanical properties and conductive property.
Results and discussion Mechanical properties of graphite blocks Physical properties of the graphite blocks prepared with different mean particle size of NG are shown in Table 1.
It can be seen from the table that the mean particle size of NG has influence on mechanical properties of graphite/mesophase pitch composites.
Due to the very low porosity and highly oriented graphite layers, high mechanical properties can be expected.
Showing 3181 to 3190 of 25867 items