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Online since: May 2020
Authors: Aran Hansuebsai, Krairop Charoensopa, Kazuhiro Manseki
It should be noted that viscosity and surface tension properties are important parameters for each printing process to control ink transfer and its spreading on the substrate.
3D printing is a fabrication technology that creates a three dimensional object from a digital model.
It is an electromagnetic device that converts digital pulses into mechanical shaft rotation.
Achieving a uniform homogeneous dispersion of TiO2 particles in ink is a key factor to protect the tendency of TiO2 to form bundles and aggregates that may cause clogging of the nozzle and flow instability during printing process.
While the rheological property of TiO2 paste-ink critically determines its ability to flow through the nozzle and thus affects the actual printability into stable 3D solid microstructure.
Printability is strictly determined by proper setting of the operating parameters such as nozzle size, nozzle speed and pressure as well as the flow property of paste-inks.
It is an electromagnetic device that converts digital pulses into mechanical shaft rotation.
Achieving a uniform homogeneous dispersion of TiO2 particles in ink is a key factor to protect the tendency of TiO2 to form bundles and aggregates that may cause clogging of the nozzle and flow instability during printing process.
While the rheological property of TiO2 paste-ink critically determines its ability to flow through the nozzle and thus affects the actual printability into stable 3D solid microstructure.
Printability is strictly determined by proper setting of the operating parameters such as nozzle size, nozzle speed and pressure as well as the flow property of paste-inks.
Online since: October 2011
Authors: Ji Tan Guo, Rui Zhang, Rui Wang
OGFC mixes requires better properties, which is coarse aggregate, asphalt and aggregate gradation.
Air-void has a strong influence on mechanical properties, road performance and reducing noise.
Aggregate Gradation Air-void is key factor effecting noise reduction results and drainage.
Aggregate gradation also affects the structural forms and uniformity of voids.
Air-void has a strong influence on mechanical properties, road performance and reducing noise.
Aggregate Gradation Air-void is key factor effecting noise reduction results and drainage.
Aggregate gradation also affects the structural forms and uniformity of voids.
Online since: October 2008
Authors: Sarah Leach, R. Edwin Garcia
Left inset
embodies the polar response of the normalized piezoelectric behavior for different anisotropy
factors.
On the influence of obstacles arranged in rectangular order upon the properties of the medium.
Properties of anisotropic piezoactive polycrystals.
Effective properties of ferroelectric and/or ferromagnetic composites: a unified approach and its applications.
Atomistic study of structural, elastic, electronic and thermal properties of perovskites Ba(Ti, Zr, Nb)O3.
On the influence of obstacles arranged in rectangular order upon the properties of the medium.
Properties of anisotropic piezoactive polycrystals.
Effective properties of ferroelectric and/or ferromagnetic composites: a unified approach and its applications.
Atomistic study of structural, elastic, electronic and thermal properties of perovskites Ba(Ti, Zr, Nb)O3.
Online since: September 2007
Authors: Michael Link, Stefan Stöhr, Matthias Weiland
In this case the updating parameters used in state 1 must not only reflect
the structural properties due to damage but also due to other modelling uncertainties.
The difference comes in by weighting the second row of eq.(8) by a factor ws.
The weighting factor ws plays the role of reducing the influence of the response sums.
Details of the element properties which are similar to those of the NASTRAN® Element QUADR can be found in [10].
This value was calibrated by a factor of 3.1 in order to match the measured fundamental frequency of the undamaged beam.
The difference comes in by weighting the second row of eq.(8) by a factor ws.
The weighting factor ws plays the role of reducing the influence of the response sums.
Details of the element properties which are similar to those of the NASTRAN® Element QUADR can be found in [10].
This value was calibrated by a factor of 3.1 in order to match the measured fundamental frequency of the undamaged beam.
Online since: October 2013
Authors: Hong Liu, Li Li Luo
The key parts of waveform spring stamping die, the forming quality of which is directly affected by modeling method of forming surface and machining quality are forming surface of waveform spring.
The quality of modeling fitting algorithm is directly related to approximation precision and smoothness of curved surface, further affects the overall quality of the curved surface.
Fig.6 Minimum curvature radius analysis of die Because of selected tool radius R≤|Rmin| and tool specifications factor to consider, therefore the tool radius of die’s curved surface of machining waveform spring is 2mm long.
Geometrical property of die’s curved surface of waveform spring along boundary line change little, which is suitable for the equidistance bias method to generate tool path.
Mechanical Design, Vol.28 (2001) 8-11
The quality of modeling fitting algorithm is directly related to approximation precision and smoothness of curved surface, further affects the overall quality of the curved surface.
Fig.6 Minimum curvature radius analysis of die Because of selected tool radius R≤|Rmin| and tool specifications factor to consider, therefore the tool radius of die’s curved surface of machining waveform spring is 2mm long.
Geometrical property of die’s curved surface of waveform spring along boundary line change little, which is suitable for the equidistance bias method to generate tool path.
Mechanical Design, Vol.28 (2001) 8-11
Online since: February 2013
Authors: Jun Pin Lin, Fan Yang, Yong Feng Liang, Xiao Li, Nan Tian
It has been found that Nb is the essential and effective element improving the mechanical and corrosion resistant properties of TiAl based alloy [8].
The corrosion behavior in various environments is a limiting factor for the lifetime.
The study of corrosion resistance of TiAl based alloys in acids and alkalis, makes it possible to predict their service properties in these media.
It is apparent that the pore parameters are not affected by different Nb additions.
Chen, Pore structures and thermal insulating properties of high Nb containing TiAl porous alloys, J Alloy Compd. 492(2010) 213-218
The corrosion behavior in various environments is a limiting factor for the lifetime.
The study of corrosion resistance of TiAl based alloys in acids and alkalis, makes it possible to predict their service properties in these media.
It is apparent that the pore parameters are not affected by different Nb additions.
Chen, Pore structures and thermal insulating properties of high Nb containing TiAl porous alloys, J Alloy Compd. 492(2010) 213-218
Online since: March 2010
Authors: Lucy DiSilvio, Richard Curtis, R. Omar, J. Bahra, M. Ditta, A. Chotai
However, the properties of all
these materials differ considerably, making one more suitable to another for a specific application.
Figure 5: Contamination from Investment Die Materials Figure 6: Contamination depths in titanium depending on die material, holding temperature and contact time The consequence of such layers is multi-fold and both mechanical and chemical properties are expected to change.
In vitro properties of SPF titanium alloys - immersion in simulated body fluid.
In vitro properties - cellular studies.
Modification of electronic properties has the potential of affecting the biocompatibility of the surface through a change in surface charge.
Figure 5: Contamination from Investment Die Materials Figure 6: Contamination depths in titanium depending on die material, holding temperature and contact time The consequence of such layers is multi-fold and both mechanical and chemical properties are expected to change.
In vitro properties of SPF titanium alloys - immersion in simulated body fluid.
In vitro properties - cellular studies.
Modification of electronic properties has the potential of affecting the biocompatibility of the surface through a change in surface charge.
Online since: September 2006
Authors: Jonathan Almer, Ulrich Lienert, Magnus Odén, Peter Hedström
This deformation induced martensitic
transformation provides a composite strengthening effect, and combined with the dislocation
densification it produces a high strain hardening and good mechanical properties.
The different elastic and plastic properties of the phases in this potentially three-phase material will respond dissimilarly during loading and residual stress partitioning between the three phases will be generated.
Tensile samples for in situ experiments were cut from cold rolled sheets by pulsed Nd-YAG laser to ensure a low heat input and unaffected material properties.
The results are not as clear in the transverse direction, since the measured strains are much lower and therefore more significantly affected by the error margins.
Plastic anisotropy is also a factor to consider and it involves the number of operational slip systems.
The different elastic and plastic properties of the phases in this potentially three-phase material will respond dissimilarly during loading and residual stress partitioning between the three phases will be generated.
Tensile samples for in situ experiments were cut from cold rolled sheets by pulsed Nd-YAG laser to ensure a low heat input and unaffected material properties.
The results are not as clear in the transverse direction, since the measured strains are much lower and therefore more significantly affected by the error margins.
Plastic anisotropy is also a factor to consider and it involves the number of operational slip systems.
Online since: January 2016
Authors: Triwulan Triwulan, Ridho Bayuaji, Luvi Yusepa Dwijayanti, Januarti Jaya Ekaputri
In addition, the use of Portland Cement (PC) in normal concrete will affect the environment.
There was no study concerning the effect of steamed curing on properties change of geopolymer.
From Fig.5, it is clear that the correlation between the porosity and density of specimens either for normal curing or steamed curing had approximately the same value, therefore the curing factor did not affect that relationship.
Rangan, “Development and Properties of Low-Calcium Fly Ash-Based Geopolymer Concrete”, in Research Report GC1, Perth, Australia: Faculty of Engineering, Curtin University of Technology. (2005) [4] J.Davidovits, Geopolymer Chemistry & Applications, 2nd edition, Publish by Institut Geopolymer 16 rue Galilee F-02100 Saint – Quentin, France. (2008) [5] S.E.
“Mechanical Properties of MIRHA-Fly ash Geopolymer Concrete”.
There was no study concerning the effect of steamed curing on properties change of geopolymer.
From Fig.5, it is clear that the correlation between the porosity and density of specimens either for normal curing or steamed curing had approximately the same value, therefore the curing factor did not affect that relationship.
Rangan, “Development and Properties of Low-Calcium Fly Ash-Based Geopolymer Concrete”, in Research Report GC1, Perth, Australia: Faculty of Engineering, Curtin University of Technology. (2005) [4] J.Davidovits, Geopolymer Chemistry & Applications, 2nd edition, Publish by Institut Geopolymer 16 rue Galilee F-02100 Saint – Quentin, France. (2008) [5] S.E.
“Mechanical Properties of MIRHA-Fly ash Geopolymer Concrete”.
Online since: August 2006
Authors: S. Kakunai, H. Hayashihara, T. Sakamoto, H. Matsuda
Matsuda4
1
Department of Mechanical and System Engineering, University of Hyogo, 2167 Shosha, Himeji,
Hyogo, Japan, kakunai@eng.u-hyogo.ac.jp
2
Toshiba R&D Center, Toshiba Corp, Komukai Toshiba-cho, Saiwai-ku, Kawasaki,
Kanagawa, Japan, hiromichi.hayashihara@toshiba.co.jp
3
Department of Mechanical and System Engineering, University of Hyogo, 2167 Shosha, Himeji,
Hyogo, Japan, sakamoto@eng.u-hyogo.ac.jp
4 Department of Material Science and Chemistry, University of Hyogo, 2167 Shosha, Himeji, Hyogo,
Japan, matsuda@eng.u-hyogo.ac.jp
Keywords: Television Holography, Internal Stress, In-situ Measurement, Electroless Cu Plating
Solution, Cantilever Beam.
However, the internal stress generated in the plated film during deposition becomes an important factor for the detachment of the thin film from the substrate.
It was found that the internal stress changed greatly in the early stages of the plating and the additive greatly affected the initial internal stress.
The angle between the reference light and object light affects the measurement accuracy because the resolution of the CCD camera is far lower than that of a conventional holographic plate.
The properties of the substrate material are shown in Table 1.
However, the internal stress generated in the plated film during deposition becomes an important factor for the detachment of the thin film from the substrate.
It was found that the internal stress changed greatly in the early stages of the plating and the additive greatly affected the initial internal stress.
The angle between the reference light and object light affects the measurement accuracy because the resolution of the CCD camera is far lower than that of a conventional holographic plate.
The properties of the substrate material are shown in Table 1.