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Online since: December 2012
Authors: Lan Fang Jiang, Hong Liu, Chang Guo Hu, Xian Li Chen, Zhi Jiang Lei
Its material is GPPS 2110.
Materials and Design 2007, (28):1271-1278
Journal of Mechanical Engineering 2011;47(6):27-32
Journal of Tongji University(Natural Science) 2011;39(2):287-289.
Online since: June 2010
Authors: Marek Szkodo
On the other hand, intensity of cavitation loading plays a key part during damage of materials.
Cavitation has also found application in a number of commercial products to clean or breakdown materials because of producing extremely high energy densities [3].
Laser beam processing and subsequent rapid cooling of materials subjected on the cavitation erosion leads as a rule to grains refining and, due to diffusion retarding, creates the state of residual stresses within the processed material.
The laser treatment of the investigated material surface was made at the Institute of the Fluid-Flow Machinery Polish Academy of Science in Gdansk with continuous work CO2 laser of 1.2 kW (MLT1.2).
Quantifying the cavitation damage of the materials by the pits counting is a method that was also applied by other authors (e.g. [20]).
Online since: September 2014
Authors: Annalisa Pola, Siri Harboe, Christoph Zang, Michael Modigell
Table 2: Model parameters of investigated materials.
Qi et al., Viscosities of liquid metal alloys from non-equilib. molecular dynamics, Journal of Computer-Aided Materials Design 8, 2001, pp. 233-43
Modigell: Yield stress in semi-solid alloys - the dependency on time and deformation history, Key Engineering Materials, 554-557, 2013, pp. 523-535
Key Engineering Materials, 504 - 506, 2012, pp. 333-338 [15] M.
Chen, A Rheological Model of Semisolid Magnesium Alloy Slurries, Materials Science Forum Vols. 488-489, pp. 333-336, 2005
Online since: May 2010
Authors: Michael Wieland, Marion Merklein
Investigated Tool Materials and Coatings The heat transfer coefficient describes the heat transfer capability depending on the two materials which are brought into contact.
To qualify the investigated tool materials with applied coating systems based on AlCrN with respect to the achieved material properties of the used boron-manganese steel tensile tests were performed.
Besides the heat transfer capability of the tested tool materials also the thickness of the applied AlCrN-coating influences the heat flux.
In: Material Science and Engineering 342 (2003), p. 58-79 [2] W.
In: International Journal of Heat and Mass Transfer 51 (2008), p. 1017-1023 [8] A.
Online since: January 2016
Authors: R.A. Vasin, Olga I. Bylya, Paul L. Blackwell
Journal Mech.
Prasad, Hot working of commercial Ti–6Al–4V with an equiaxed α+β microstructure: materials modeling considerations, Materials Science and Engineering A248 (2000) pp.184–194
Series: Materials Science and Engineering, 63012033 (2014) [12] O.I.Bylya, B.K.Pradhan, E.B.Yakushina, P.L.Blackwell, Modelling of active transformation of microstructure of two-phase Ti alloys during hot working // Letters on Materials 4 (2), (2014) pp.124-129
Zhang, Numerical and experimental analysis of superplastic-like uniaxial tensile necking of coarse-grained LY-12, Mechanics of Materials 35 (2003) pp.1127–1138 [15] Smirnov, O.M, Metal Working in a Superplastic State.
Osipov Determination of optimal gas forming conditions from free bulging tests at constant pressure, Journal of Materials Processing Technology 217 (2015) pp.158–164.
Online since: January 2012
Authors: Jin Bao Ji, Qian Zhou, Wei Ming Yan
Plastic fastener is a typical strengthening material for museum movable cultural relics in China.To find out strengthening effects of this material,by shaking table tests seismic responses of a ceramic relic in a 1:1 scale showcase model were studied.2 boundary conditions of the relic were considered:free-standing and strengthened by plastic fastener.
Introduction Museum cultural relics are usually in free-standing status,under earthquakes they are easy to be damaged.An obvious example is the 8.0 magnitude wenchuan earthquake in May 12,2008 in China.By original statistics there were more than 3169 movable cultural relics in 216 collection units were damaged during the earthquake,which led to huge loss of value[1-2].Fig.1 shows a ceramic relic fell down from display stand and got damaged under the earthquake.Thus aseismic protection for museum cultural relics is necessary.Plastic fastener is a material which has certain strength and can be used to strengthen light museum cultural relics by lateral support [3-5],as shown in Fig.1(b).To find out strengthening effects of plastic fastener,in this paper by shaking table tests aseismic behaviors of a ceramic relic strengthened by plastic fasteners under earthquakes are studied,results will be helpful for aseismic protection of free-standing museum cultural relics.
(a) damage (b) strengthened by plastic fasteners Fig. 1 Photos of seismic damage and strengthening of museum cultural relics Test Survey Model of the showcase is built according to sizes of a museum showcase with the scale of 1:1 and sizes of 700×700×1200mm (length × width × height),as shown in Fig.2(a).Materials of the showcase include steel and glass.The wooden display stand is of rectangle shape of with the sizes of 400×400×100mm (length × width × height).Sizes of the selected ceramic cultural relic are 24×2×227mm (bottom radius × wall thickness × height).By calculation barycenter height values of the showcase and relic are 556mm and 97mm.4 L-shape plastic fasteners are considered to strengthen the relic,size of each is 50×50×5mm(length × width × thickness).When strengthening the relic,one end of each plastic fastener is fixed to display stand,the other end is used to support side of relic,as shown in Fig.2(b).Boundary conditions for different models
Yan: Sciences of Conservation and Archaeology Vol. 22 (2010): p. 36 (in Chinese) [2] Q.
Nagashima: Journal of Japan Society of Civil Engineers Vol.30 (2009): p. 645 (in Japanese) [5] M.
Online since: July 2011
Authors: Yue Zhen Jiang, Xing Kai Duan
Recently, mechanical alloying and hot pressing (MA-HP) method has been successfully developed for preparation of Bi2Te3-based thermoelectric materials [21].
Bell: Science Vol. 321 (2008), p. 1457 [2] V.
Boyer: Journal of Crystal Growth Vol. 204 (1999), p. 91 [14] R.
Das: Materials Letters.
Vol. 60 (2006), p. 2059 [17] Cho Kyoung-Won and Kim II-Ho: Materials Letters Vol. 59 (2005), p. 966 [18] V.
Online since: December 2013
Authors: Xiao Yan Zhang, De Feng Wu, Xiao Song Zhou, Dan Huang
Introduction The lightweight materials such as aluminum and its alloy have been applied widely with the developments of sciences and technologies.
Zeng: Chinese Journal of Materials Research, Vol. 14 (2002) No.5, p.449.
Li, et al: Shuang Wang Heat Treatment of Materials, Vol. 33 (2008) No.11, p.70-73.
Javadpour Materials Letters, Vol. 65 (2011), p. 1835
Li: Transactions of Materials and Heat Treatment, Vol. 31 (2010) No. 4, p. 125-128.
Online since: July 2014
Authors: A Ying Zhang
Lukyanovich published clear images of 50 nanometer diameter tubes made of carbon in the Soviet Journal of Physical Chemistry.
Baughman at the NanoTech Institute has shown that single and multi-walled nanotubes can produce materials with toughness unmatched in the man-made and natural worlds [6].
Carbon nanotubes are also a promising material as building blocks in bio-mimetic hierarchical composite materials given their exceptional mechanical properties (~1 TPa in modulus, and ~100 GPa in strength).
Effort is ongoing to produce CNT composites that incorporate tougher matrix materials, such as Kevlar, to further improve on the mechanical properties toward those of individual CNTs.
An approximately 1 mm–thick carbon nanotube layer was used as a special material to fabricate coolers, this material has very low density, ~20 times lower weight than a similar copper structure, while the cooling properties are similar for the two materials.
Online since: May 2012
Authors: Chao Lung Hwang, Chun Tsun Chen, Le Anh Tuan Bui, Meng Ying Hsieh
In general, raw materials (eg. fly ash) do not possess any self-bonding capability, at the beginning both methods let the waste materials be pelletized with other adhesive agents such as water [1, 2].
Experimental methods Materials.
All materials conform to the related ASTM standards.
Construction and Building Materials. 2007;21(9):1869-78
Journal of Hazardous Materials. 2010;179(1-3):954-65