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Online since: February 2013
Authors: Wu Xiang Wang, Xiao Feng Wang, Xiao Ming Zhou, Jie Yang, Jin Wen Zou
Detection and Deformation Mechanism of Non-metallic Inclusions in FGH96 Alloy Isothermal Forging Disk Xiaofeng Wanga, Xiaoming Zhoub, Jie Yangc, Jinwen Zoud and Wuxiang Wange Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, China awangxiaofeng_0404@163.com, bxmzhouf@163.com, cj-y03@mails.tsinghua.edu.cn, dzoujw03@mails.tsinghua.edu.cn, ewwux@sina.com Keywords: Powder metallurgy superalloy, Inclusion, Detection, Deformation mechanism, Extrusion process.
Founding internal defects in the material is one of basic functions of ultrasonic nondestructive testing.
The crack initiation and propagation from the location of inclusions and the interface became easily under external force, which lead to rapidly failure of materials.
Wang, Development and Application of P/M Superalloy, Journal of Aeronautical materials. 26 (2006) 244-250
Pollock, Deformation and Strain Storage Mechanisms during High-Temperature Compression of a Powder Metallurgy Nickel-Base Superalloy, Metallurgical and Materials Transactions A.41(2010) 2002-2009
Online since: April 2008
Authors: Chris Wallbrink, Wei Ping Hu
The material properties, coupon geometry and the loading spectra are given in [8].
The crack growth threshold of the material may be limiting the number of spectrum cycles that are contributing toward crack growth.
Journal of Basic Engineering.
Journal of Applied Mechanics, 1978. 45: p. 267-276
Green, Assessment of Fatigue Crack Growth Prediction Models for F/A-18 Representative Spectra and Material. 2006, Defence Science and Technology Organisation, DSTO-RR-0312
Online since: August 2013
Authors: Yan Jun Liu, Yong Chao Zheng, Qing Li
In this study, with iron ore tailings and CaO as raw materials, three belite cement clinker samples were prepared in a muffle furnace at 1400℃ for 10, 20 and 30 minutes respectively.
From700℃ to 1100℃ the sample weight tends to be stable, followed by slight weight loss when temperature was passing 1250℃, which may be caused by volatilized materials loss with air flow, such as K, Na, S, Cl and some other elements.
Mechanic-chemical activation of iron Ore tailings and preparation of high-strength construction materials, Journal of University of Science and Technology Beijing. 32(2010)504-508
Experiment studies and mechanism analyses of Portland cement with iron-tailings as raw materials, Bulletin of the Chinese Ceramic Society. 6(1999)65-68
Experimental research on preparation of cementing materials with iron tailings, Metal Mine. 12 (2010)175-178
Online since: June 2008
Authors: Wei Hua Zhang, Kazuaki Shiozawa, Ji Wang Zhang, W. Li, Lian Tao Lu
Fatigue & Fracture of Engineering Materials & Structures, Vol. 24, 2001: 781-790
Fatigue & Fracture of Engineering Materials & Structures, Vol. 25, 2002: 765-773
Fatigue & Fracture of Engineering Materials & Structures, 22(1999): 667-762
International Journal of Fatigue, 28(2006):1521-1532
Advanced Materials & Processes, 1991; 140(5): 28-34 [11] Shiozawa K, Lu L T, Fatigue & Fracture of Engineering Materials & Structures, 25(2002), pp.813-822
Online since: January 2014
Authors: G. Ajith Weerasundara
According to these laws municipal solid waste generated within their territories is their property and they are mandatory to remove and dispose of these materials without causing any nuisance to the general public.
If the portion of waste consists of organics and can be easily separated from other waste materials, bioconversion of waste may become a viable strategy.
Technology employed for Hazardous Waste Management Two decades ago, the common hazardous waste management practice was open dumping with MSW and it created unfavorable amount of hazardous materials seeping into the ground.
Siddiqui, Issues with Solid Waste Management in South Asian Countries, Journal of Environmental and Occupational Science, 2012. 1(2) 129-131
Journal of the College of Community Physicians of Sri Lanka, 16(2), (2011) 15-20.
Online since: March 2014
Authors: Kandasamy Jothivenkatachalam, S. Prabhu, A. Nithya, S. Chandra Mohan
The nanostructure materials of WO3/TiO2 photocatalyst have offered high surface-to-volume ratio and size confinement in radial-direction which leads to enhanced charge transfer property thus increases the photocatalytic activity.
The Fermi level of the two materials in heterostructures is the same which causes the longer photogenerated charge lifetime and the improved surface charge carrier transfer rate thus enhances the photocatalytic activity [36].
But there are very limited reports are available on heterostrectured materials as a photocatalyst.
Jothivenkatachalam, Dye Sensitized Solar Cell: A Summary, Materials Science Forum. 771 (2014) 1-24
Nihara, Titania Nanotubes Prepared by Chemical Processing, Advanced Materials 11 (1999) 1307-1311
Online since: July 2011
Authors: Hang Jun Wang, Guang Qun Zhang, Feng Ya Xu
Where, the classroom assessment quizzes is one of the larger flexibility aspects, which can use different teaching methods and different performance appraisal methods according to the characteristics of chapters, such as throwing out questions based on teaching materials or examples by teachers, students thinking with problems, discussing together, or even going to the podium to explain.
Based on respecting for individuality and creativity of students, through free combination, free topics, finding material, and designing work etc. a series of practical aspects, the teacher's role is no longer to oversee and manage the examination process, but provide the project requirements through lectures, guidance and works modifying.
Journal of Hebei Normal University.
Philosophy and Social Sciences Edition.
Online since: October 2011
Authors: Zhao Hua Wu
Introduction The reliability of solder joint depends on many factors including solder joint geometry shape, such as the match of material CTE, the performance of solder creep fatigue, the loading conditions of solder joint thermal / mechanical.
Acknowledgement This work is supported by the Natural Science Foundation of Guangxi(0832242), the Manufacturing System and Advanced Manufacturing Technology Key Laboratory Project of Guangxi(0842006_016_Z).
Chip scale package, design, materials, technology, reliability and application [M].
Guilin Institute of Technology Journal. 2006, 26 (1): 107-110
Online since: March 2011
Authors: Shao Bo Cui, Feng Wei He
Study of applied properties of aminosulphonic acid based superplasticizer Shao-bo Cui a , Feng-wei He b Department of Biological Medicine and Chemical Engineering, Liao Ning Institute of Science and Technology, Benxi 117004, Liaoning , China ateachercsb@yahoo.com.cn , bhfwdd@163.com Keywords: aminosulphonic acid-based, superplasticizer, properties, compatibilities Abstract.
Experiment Materials.Two kinds of water reducing agents were used: ASP systhesized in our laboratory, its characteristics are shown in table 1; FDN produced in a the concrete additives plant in Anhui Province.
HUA: Material and Structrure.
Bassioni: International Journal of Engineering Vol. 3 (2010), pp.577-587
Online since: October 2011
Authors: Qian Zhuang, Guo Guang Wang, Shao Wu Li
Meanwhile, the alkaline substance in the grouting materials of cement and water glass may be dissolved in the underground water, which can be easily absorbed by the tree roots and is harmful to the healthy growth of trees[5].
According to the theory of plant growth, all the physical processes, such as metabolism of plants, material transformation and transport, temperature adjustment and transpiration, require the participation of water.
Geng: Chinese Journal of Underground Space and Engineering.
Gao, et al: Hubei Agricultural Sciences.
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