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Online since: November 2011
Authors: Jian Jun Zhou, Guo Bin Zhao, Jian Feng Bian
This definition describes the conditions and the factors influencing rock burst.
Scattered peeling at any moment Constructing is affected.
The geology conditions and rock mass properties have some common characteristics in the area of rock burst from K10+800 to K11+023 and from K6+650 to K 6+670.
Rock burst is a complicated geology phenomenon which is affected by many factors, for example underground water, structure and overburden depth and so on.
Institute of geological mechanical research of Chinese Acadamy of geological sciences.2007, Beijing, China.
Online since: January 2014
Authors: He Fei Ji, Jiang Rong Yang, Gui Chao Hu, Chun Li Jiang
The alloys were always quenched to form metastable, solid solutions to achieve desired properties and performances.
The impacting factors related with the changed microstructure caused by aging treatment were also investigated.
After a set of wet mechanical polishing treatments in the open laboratory, the samples were ultrasonically cleaned in acetone and ethanol respectively to remove the oxidized surface and other impurities.
From that we can conclude that the tree-like microstructure had a relatively weaker corrosion resistance comparing with the bulk material, and for this H atom was the principal factor as it acted on the tree-like phase firstly, making it soft and meanwhile weakening its corrosion resistance.
The preferred growing orientations of the hydride in each area circled by different colors are almost identical, and the former description proves that the microstructure of the bulk material is the main factor affecting the hydrides’ preferred growth.
Online since: November 2011
Authors: Dong Hwan Shin, Ji Nung An
Moreover, the preload significantly affects the dynamics of the rotational system.
Fig. 2 shows the CAE model after preprocessing, such as for links, knee joint torsion springs, material properties, revolute joints, contacts, and the hip joint angular displacement profile, which has an angular velocity of 120 deg/s as the condition of motion.
Through the full factorial design of experiments (DOE) with 2 factors and 5 levels, we generate 25 test cases as listed in Table A1.
Through the full factorial design of experiments (DOE) with 2 factors and 5 levels, we generate 25 test cases as listed in Table A2.
Koditschek, in: ASME International Mechanical Engineering Congress and Exposition (2007) [6] J.
Online since: November 2017
Authors: Bohuslav Mašek, Štěpán Jeníček, Dagmar Bublíková, Kateřina Opatová
In high-strength steels, final microstructure and mechanical properties upon heat treatment are dictated mainly by their alloying concept.
In order to find whether molybdenum affects mechanical properties and transformation temperatures, its content in the AHSS-2 steel was set to 0.16 %.
Volume fractions of retained austenite were determined using X-ray diffraction in specimens with the best mechanical properties.
Very good mechanical properties were obtained mainly in AHSS-2 steel which contained higher amounts of chromium and molybdenum.
The best mechanical properties were achieved in AHSS-2 steel which had higher levels of chromium and molybdenum.
Online since: December 2016
Authors: Yupaporn Ruksakulpiwat, Thanh Chi Nguyen, Ruksakulpiwat Chaiwat
Superior properties of this reinforcement are indicated by its high surface area and specific strength.
Some factors such as acid type, acid concentration and hydrolysis temperature are the main factors influencing on the overall efficiency of the hydrolysis process.
As a result, the physical properties of resulting composite will be improved.
Mattoso, Properties of thermoplastic starch from cassava bagasse and cassava starch and their blends with poly (lactic acid), Ind.
Mechanical behavior, Macromolecules. 34(9) (2001) 2921-2931
Online since: June 2014
Authors: Zhao Gang, Tran Linh Khuong, Zhuang Zhi Sun, Muhammad Farid, Muhammad Rizwan, Rao Yu
Fig. 1 Grasshoppers morphology Fig. 2 The model of the Grasshoppers For the jumping robot, robot weight is one of the factors affecting the height and distance of each time of jumping.
To calculate this, they must know the information about the material properties after printing.
Experimental tests to sort out the tensile strength of ABS material were conducted in Static Mechanical Properties Testing Laboratory of Harbin Engineering University by using Universal Testing machine Zwick/Roell Z010 (Fig.7).
Before manufacturing the actual biomimetic structure, the material was tested for certain properties.
Wright, “Anisotropic material properties of fused deposition modeling ABS,” Rapid Prototyp.
Online since: March 2008
Authors: Indera Sadikin, Djoko Suharto, Bangkit Meliana, Kemal Supelli, Abdul Arya
In Probabilistic Fracture Mechanics Analysis, three types of shaping factors are considered.
The primary shaping factors are crack growth coefficient and fracture toughness.
Both are stochastic inputs derived from fracture mechanics properties of material.
The secondary shaping factors are the cyclic pressure and its resulting stress.
[5] Legowo, D.: FEM Technique for Calculating Stress Intensity Factors (in Indonesian), Master Thesis, Mechanical Engineering Department, Institut Teknologi Bandung (1999)
Online since: August 2009
Authors: E. Zaldivar-González, J. García-Lira, G. Urriolagoitia-Sosa, J.M. Sandoval Pineda
Peening a surface spreads it plastically in the manner of a rivet, causing changes in the mechanical properties of the surface.
Fig. 1, Stress-strain curve used for simulation Fig. 2, Numerical simulation model for shot peening Only the elastic properties of the harder component (Piece 2) will be considered (E = 200 x 103 N/mm2 and υ = 0.28).
Urriolagoitia-Sosa, "Analysis of prior strain history effect on mechanical properties and residual stresses in beams" Ph D Thesis, Oxford Brookes University (2005), pp 130-142
Carlson, "Weight function and stress intensity factor solutions" Pergamon Press, Oxford, England, (1991)
Dowling, "Mechanical behavior of materials", Englewood Cliffs, Nj, Prentice Hall, (1993)
Online since: September 2016
Authors: Zhao Yang, Guang Xu Wang, Xue Xuan Xu, Xiao Long He, Jian Ning Lu
These cracks are the most fatal factors that affect the mechanical properties of bi-metal products.
The mechanical properties of the material containing plate like crack are bad.
It was found that the samples with curved interface have better mechanical properties.
And T6 heat treatment was found improved the mechanical properties very much.
It results in a very much increase of the mechanical properties of the bi-metal part.
Online since: January 2006
Authors: Kyung Tae Park, Dong Hyuk Shin, Woo Gyeom Kim, Jung Yong Ahn, Yong Suk Kim
Their room temperature tensile properties were examined and compared to those of coarse grained counterpart.
In steels, a wide range of the mechanical properties can be achieved by microstructural modification without compositional change through various thermomechanical treatments.
In this regard, the mechanical properties of dual phase steels consisting of ferrite and martensite are quite noticeable.
In this study, the microstructures and mechanical properties of UFG dual phase steels fabricated by ECAP were compared to those of a coarse grained dual phase steel.
Tensile Properties The representative engineering and true stress-strain curves and the corresponding tensile data are presented in Fig. 3 and Table 2, respectively.
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