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Online since: August 2008
Authors: Bruno D. Soares, Carla Eponina Hori, Carlos E.A. Batista, Humberto Molinar Henrique
• Texture and shape: Scanning Electronic Microscopy (SEM) was carried out in metallized
samples with gold in order to identify the texture, shape, and size of the grains.
[7] JCPDS data: index numbers 01 082 1690, 01 072 1651, 01 071 2396 and 01 072 0506.
[7] JCPDS data: index numbers 01 082 1690, 01 072 1651, 01 071 2396 and 01 072 0506.
Online since: September 2013
Authors: Salahuddin Junus, Eric Tanoto, Anne Zulfia, Lilis Mariani
As a result, refinement of α-Al grains and improving the distribution of reinforcement particles within the melt are the most important effects of vortex method [2].
Composite strength comes from its effectiveness in inhibiting the movement of dislocations, but by increasing numbers reinforced the function of it being effective Clumping and porosity of Al2O3 particles clearly visible especially on the volume fraction of 15% and 20% (Fig 3 (a,b)).
Composite strength comes from its effectiveness in inhibiting the movement of dislocations, but by increasing numbers reinforced the function of it being effective Clumping and porosity of Al2O3 particles clearly visible especially on the volume fraction of 15% and 20% (Fig 3 (a,b)).
Online since: December 2016
Authors: Luboš Náhlík, Pavel Hutař, Raúl Bermejo, Zdeněk Majer, Kateřina Štegnerová
For example in the microelectronics, low temperature co-fired ceramics (LTCC) consisting of ceramic grains (alumina) embedded in a glass matrix (borosilicate glass) are used as substrate material for production of printed circuit boards [10].
Numbers of criteria exist in the literature for the determination of crack propagation direction.
Numbers of criteria exist in the literature for the determination of crack propagation direction.
Online since: December 2012
Authors: Yan Ping Feng, Li Bing Yang, Yan Hong Chen, Wei Guo Li, Ya Li Liu
As with IMU/DGPS system, the base station in a certain range can not control or a small number of control points of the case are analytical aerial triangulation adjustment, greatly reducing the photogrammetry of foreign trade control workload, shortens the production cycle, improve the work efficiency.
References [1] Peijun Wang, Yaming Xu: 《Photographic Surveying》, p. 1-3 (In Chinese) [2] Dewen Zhao: The Photogrammetric Processing and Application of ADS40 Digital Sensor (Railway Survey,2009-2)(In Chinese) [3] Lei Wu, Ning Zhang, Jianwei Shi: ADS40 Airborne Digital Sensor Application In Water Conservancy and Hydropower Engineering Analysis, ( Dam & Safety, 2009 - S1 )(In Chinese) [4] Jingtian Jiang, Du Fengyan, ADS40 digital aerial camera application in the coal industry (Grain Science and Technology and Economy,2007-8)(In Chinese) [5] Zuxun Zhang: Future development and Prospect of digital photogrammetry (GIS World , 2004 - 6) (In Chinese) [6] Youchuan Wan, Yongjun Zhang, Liangming Liu, Photogrammetry Subjects Progress and Prospect ( http://www.zgchb.com.cn/newspaper/show.php?
References [1] Peijun Wang, Yaming Xu: 《Photographic Surveying》, p. 1-3 (In Chinese) [2] Dewen Zhao: The Photogrammetric Processing and Application of ADS40 Digital Sensor (Railway Survey,2009-2)(In Chinese) [3] Lei Wu, Ning Zhang, Jianwei Shi: ADS40 Airborne Digital Sensor Application In Water Conservancy and Hydropower Engineering Analysis, ( Dam & Safety, 2009 - S1 )(In Chinese) [4] Jingtian Jiang, Du Fengyan, ADS40 digital aerial camera application in the coal industry (Grain Science and Technology and Economy,2007-8)(In Chinese) [5] Zuxun Zhang: Future development and Prospect of digital photogrammetry (GIS World , 2004 - 6) (In Chinese) [6] Youchuan Wan, Yongjun Zhang, Liangming Liu, Photogrammetry Subjects Progress and Prospect ( http://www.zgchb.com.cn/newspaper/show.php?
Online since: December 2012
Authors: Iziana Yahya, Ramani Mayappan, Noor Asikin Ab Ghani, Hamidi Abd Hamid, Nur Nadiah Zainal Abiddin
This has resulted in coarsening of the scallops and at the same time lowering the number of IMCs.
Wang reported that the surface morphology of the Cu-Zn appears to have a granular appearance on the surface of Sn-Ag-Cu-Zn/Cu, but the grain size of Cu5Zn8 is far smaller compared to Cu6Sn5 thus may not observable by SEM image in Fig. 4 (b) [3].
Wang reported that the surface morphology of the Cu-Zn appears to have a granular appearance on the surface of Sn-Ag-Cu-Zn/Cu, but the grain size of Cu5Zn8 is far smaller compared to Cu6Sn5 thus may not observable by SEM image in Fig. 4 (b) [3].
Online since: April 2015
Authors: Michaela Kostelecká
Introduction
Ultra High Performance Concrete (UHPC) is ultra-high-grade concrete with fine-grained macrostructure and high consistency.
This highly advanced and sophisticated material offers a number of interesting applications such as the production of facade panels, which promotes more abroad.
This highly advanced and sophisticated material offers a number of interesting applications such as the production of facade panels, which promotes more abroad.
Online since: September 2011
Authors: Tai Yong Wang, Qian Ning
Introduction
In machining processes, cutting tool gradually wears out, loses its sharpness and becomes blunt due to thermal fracturing, attrition, abrasion, plastic deformation, diffusion, chemical wear, and grain-pullout.
Eighty samples of each level are used as the training samples and testing samples, the number of training samples is fixed to obtain the performance of the estimation method more plentifully.
Eighty samples of each level are used as the training samples and testing samples, the number of training samples is fixed to obtain the performance of the estimation method more plentifully.
Online since: November 2007
Authors: Kazuyuki Hokamoto, Mitsuhiro Matsuda, Minoru Nishida, Shahin Khameneh Asl, Ryuichi Tomoshige, M. Heydarzadeh Sohi
The effects of heat treatment on the WC-Co sprayed coatings have been studied by a number of
researches [10-16].
Phase transformation mechanism by heat treatment from WC or W2C to Co3W3C seems to be a share mechanism, because of the defects and shape of the grains.
Phase transformation mechanism by heat treatment from WC or W2C to Co3W3C seems to be a share mechanism, because of the defects and shape of the grains.
Online since: June 2012
Authors: Yutaka Yamagata, Shinya MORITA, Hirofumi Suzuki, Mutsumi Okada, Tatsuya Furuki
In the conventional dressing process of a resinoid bonded diamond wheel, the abrasives on the wheel surface are sharpened and the acting abrasive number increases on the wheel surface due to rubbing by the GC dresser.
Table 1 Grinding conditions Wheel Grain size Diameter Rotational speed Resinoid diamond wheel SDC1200 Φ70 mm 12000 min-1 Work piece Rotational speed Binderless tungsten carbide 500 min-1 Depth of cut 0.5 μm/pass Feed rate 0.5 mm/min Coolant Solution type 10mm 0.5 mm Approximate radius: 100 mm Φ50 mm Fig. 6 Geometry and view of Fresnel lens mould for structured grinding. 0 100 100 0 60 0 90 0 100 70 bottom side surface outer side surface outer side surface bottom side surface μm μm Fig. 7 Comparison of the diamond wheel edge of before truing and after truing Figure 8(a) shows a measured profile of the ground Fresnel mould.
Table 1 Grinding conditions Wheel Grain size Diameter Rotational speed Resinoid diamond wheel SDC1200 Φ70 mm 12000 min-1 Work piece Rotational speed Binderless tungsten carbide 500 min-1 Depth of cut 0.5 μm/pass Feed rate 0.5 mm/min Coolant Solution type 10mm 0.5 mm Approximate radius: 100 mm Φ50 mm Fig. 6 Geometry and view of Fresnel lens mould for structured grinding. 0 100 100 0 60 0 90 0 100 70 bottom side surface outer side surface outer side surface bottom side surface μm μm Fig. 7 Comparison of the diamond wheel edge of before truing and after truing Figure 8(a) shows a measured profile of the ground Fresnel mould.