Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: February 2003
Authors: Igor M. Razumovskii, Boris S. Bokstein
Introduction Grain boundary (GB) segregation of a number of microalloying elements like C, P, S, B and others strongly affects the mechanical properties of the structural materials [1].
The second approach permits to determine the segregation factor s for a given element in a framework of conventional diffusion experiment.
In the Cregime conditions (low temperatures, small time of diffusion annealing) it was assumed as in [18,19] that the movement of GBs could not considerably affect on the shape of diffusion penetration profiles.
The ratio of P to δDgb increases with decreasing temperature and equals to the segregation factor s according to the Eq. 4.
One should keep in mind, that the triple product P represents not only the GB diffusion coefficient Dgb but also the GB segregation factor s > 1.
Online since: April 2022
Authors: M.N. Bouaziz, Boualem Khemissat, Amina Manel Bouaziz
Although many factors such convection, Brownian diffusion, turbulence, sedimentation, inertial effect, electrophoresis, surface geometry and thermophoresis influence the particle deposition, this last effect is dominant in some conditions of engineering interest.
Another important example is fouling of gas turbine blades and thermophoretic deposition of radioactive particles which is considered to be one of the important factors causing accidents in nuclear reactors.
As seen, a same temperature profile is presented for any value of fw, explained by injection/suction is a mechanical than energetic process.
MHD Mixed Convection Heat Transfer in a Vertical Channel with Temperature-Dependent Transport Properties
Buongiorno model for MHD nanofluid flow between rotating parallel plates in the presence of variable liquid properties
Online since: May 2018
Authors: Oluwole Daniel Makinde, Bijjanal Jayanna Gireesha, Basavarajappa Mahanthesh, N.S. Shashikumar, R.L. Monaledi, M.S. Tshehla
The thermophysical properties of H2O and alloy nanoparticles are listed in table 1.
It is also observed that the friction factor is larger for nanomaterial than .
The ESHS parameter is a vital parameter affecting temperature field strongly.
The outcomes of this paper are of interest in practical extrusion and coating processes wherein nanofluid can be utilized as a coolant that determines the properties of the final product.
The Proceedings of the 1995 ASME International Mechanical Engineering Congress and Exposition, San Francisco, USA.
Online since: January 2009
Authors: De Hua Deng, Jing Liu, Ming Yin, Xu Li Hu
Compressive strength test In accordance with Standard for test method of mechanical properties on ordinary concrete (GB/T50081-2002). 3.2.
Table 3 Cracking properties on concrete surface NO.
Factors affecting corrosion and approaches for improving durability of ocean reinforced concrete structures.
Chloride Ions Diffusion Properties in High Performance Concrete with Different Materials.
Properties of polypropylene fiber reinforced silica fume expansive-cement concrete.
Online since: March 2023
Authors: Hamzah Fansuri, Bambang Sudarmanta, Sigit Mujiarto
Oil palm fronds have large heterogeneous properties, and low bulk density presents problems for large-scale commercial bioenergy power conversion projects.
Further, this proves that temperature control is one of the factors that can increase the performance and productivity of a reactor.
As shown in Table 3, the use of temperature control does affect the temperature profile.
In other words, temperature significantly affects gasification reaction, produced syngas composition, and final calorific value.
El-Hendawy, “Surface and adsorptive properties of carbons prepared from biomass,” Appl.
Online since: February 2014
Authors: Jun Tan, Hai Ming Zhao
Construction of Data Warehouse Platform in Continual Quality Improvement Jun TAN1,2,a , Haiming ZHAO2 1College of Computer and Information Engineering, Central South University of Forestry and Technology, Changsha, Hunan, China 2College of Mechanical and Electrical Engineering, Central South University, Changsha, Hunan, China atanjun007@vip.sina.com Keywords: data warehouse; continual quality improvement; association rules mining system; snowflake schema; three-tier structure Abstract.
Introduction The product quality which satisfy and exceed even expect of customer is the key factor for enterprise to success in competitive market.
Before linked to OLAP server, it is necessary to explicit definition of schema for adapting situation of enterprises, because inappropriate schema will affect performance of system.
Artificial neural networks for modeling the mechanical properties of steels in various applications [J].
Online since: August 2014
Authors: S. Ivorra, F. Javier Baeza, David Bru, F. Borja Varona
The importance of the current work is assessing the actual conditions of the structure (a heavily damaged masonry chimney), and how this state affects the numerical modelling.
Table 1 includes the mechanical parameters for both brick and mortar, and the curve included in Fig 4(d) has been obtained considering the suggestions made by Bilgin et al. [3].
Mechanical properties of the materials considered in the numerical model Brick Mortar Type fb (MPa) Eb (MPa) Type Dossage fj (MPa) Ej (MPa) M 17.7 5300 Weak 1:0:6 3.1 545 The following analyses have been run in the numerical model: Self weight static non lineal, Modal, Pushover, static wind non lineal, spectral in different directions, Time history analysis for accelerograms.
Even though it was not considered a 1.3 amplification factor, which would be mandatory once the structure was cataloged as historical heritage.
Online since: January 2012
Authors: Chun Cheng Zuo, Hang Zhu, Chun Shan Liu, Feng Han, Wen Fu Wu
College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China 2.
College of Mechanical Engineering, Jiamusi University, Jiamusi, 154007, China ahan5578@163.com,blshxhf@126.com, cwwfzlb@126.com Key words:Grain drying; Model; Dryer; Virtual instrument Abstract:Drying plays an important role in the post-harvesting process of grain, and the quality of the corn after drying has received an increasing concern.
Because of the drying process of multi-factor, multi-level, variable structure, time-varying and nonlinear characteristics such as intelligence, robustness and good drying process control system has become the key [1, 2], the stability control system will affect the efficiency of operations dryer, dry mass, energy consumption and even security [3].
Use of control system software can be projected to achieve automatic control of drying process of grain drying mathematical model, numerical method for the actual drying of heat and mass transfer process simulations can predict the result of the drying process dryer and dryer properties.
Online since: October 2009
Authors: Xin Cun Zhuang, Yu Wu, Cong Xin Li
Aim at the property of flexible Manufacturing systems, the dynamic scheduling methods are analyzed and a coding method based on working procedure is improved in this paper.
Each re-scheduling factor can drive the start time of re-scheduling, and the decision-making depends on a number of system attributes.
Step 3: Reading the re-scheduling factor to determine whether the scheduling program needs to regenerate.
Improper encoding will easily result in deadlock and decoding trouble, which may seriously affect the feasibility and effectiveness of the scheduling algorithm.
Wang: China Mechanical Engineering, Vol. 13 (2002) No.20, pp.1756-1760.
Online since: June 2018
Authors: Nabila Meutia Zahra, Siswanto Siswanto, Prihartini Widiyanti
Antibacterial properties on the bags of blood can be raised with the addition of chitosan.
This research aim is to know the influence of chitosan membrane biocomposite PVC-Glycerol against its biological and physical properties.
The bacteria and the physical properties of the blood bags were the main factors of that contamination.
The resulted antibacterial property was expected to harmonize with the PVC-glycerol biocomposites blood bag in order to maintain the original blood bag properties.
Structural Characterization and Physical Properties of Antimicrobial (AM) Starch-Based Films.
Showing 24461 to 24470 of 26166 items