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Online since: November 2017
Authors: Dalibor Vojtěch, Tereza Stejskalova, Michaela Fousová
Materials and Methods
Samples manufacture.
Microstructure of studied materials was characterized on transversal and longitudinal cross-sections.
Acknowledgement Authors wish to thank the Czech Science Foundation (project no.
Čapek, et al., Highly porous, low elastic modulus 316L stainless steel scaffold prepared by selective laser melting, Materials Science and Engineering: C 69 (2016) 631-639
Kasperovich, et al., Correlation between porosity and processing parameters in TiAl6V4 produced by selective laser melting, Materials & Design 105 (2016) 160-170
Microstructure of studied materials was characterized on transversal and longitudinal cross-sections.
Acknowledgement Authors wish to thank the Czech Science Foundation (project no.
Čapek, et al., Highly porous, low elastic modulus 316L stainless steel scaffold prepared by selective laser melting, Materials Science and Engineering: C 69 (2016) 631-639
Kasperovich, et al., Correlation between porosity and processing parameters in TiAl6V4 produced by selective laser melting, Materials & Design 105 (2016) 160-170
Online since: June 2015
Authors: B. Mohan, R.V. Karthikeyan, G Anbuchezhiyan
In the case of syntactic foamsporosity is produced by introducing hollow spheres (microballons) into the matrix materials.
MATERIALS AND EXPERIMENTAL PROCEDURE: The material used in this study was pre-alloyed AZ91D magnesium alloy powder and microballons..
This results in lower temperature in the core of the material as compared with that materials surface during conventional heating.
[5]Y.Y.Zhao and X.F.Tao,Behaviour of Metal Matrix Syntactic foams in Compression, Material Science and Technology 2009 25-29 [6] M.C.Fleming,Behaviour of metal alloys in semi-solid state.
Metallurgical transactions A, 2009 22,957-981 [7] Sudarshan, surappa M.K Synthesis of fly ash particle reinforced A3561 Al composites and their characterization, Material science and Engineering : A 2008,480 (1/2): 117-124 [8]L.P.Zhang, and Y,Y,Zhao, Mechanical response of Al Matrix Syntactic foams produced by pressure infiltration castings,J.compos.Mater,Vol 41,2007,p2105-2117 [9]F.Moreno ,CarlosJ.R.Gonzalez Oliver-compression creep of PM aluminum matrix composites reinforced with Sic short fibres-Journal of Material science and Engineering A 418:172-181,2006 [10]G.H.Wu et al, compressive behavior of cenospheres-Pure Aluminium Syntactic Foams,Scripta Mater., vol 56,2007,p221-224
MATERIALS AND EXPERIMENTAL PROCEDURE: The material used in this study was pre-alloyed AZ91D magnesium alloy powder and microballons..
This results in lower temperature in the core of the material as compared with that materials surface during conventional heating.
[5]Y.Y.Zhao and X.F.Tao,Behaviour of Metal Matrix Syntactic foams in Compression, Material Science and Technology 2009 25-29 [6] M.C.Fleming,Behaviour of metal alloys in semi-solid state.
Metallurgical transactions A, 2009 22,957-981 [7] Sudarshan, surappa M.K Synthesis of fly ash particle reinforced A3561 Al composites and their characterization, Material science and Engineering : A 2008,480 (1/2): 117-124 [8]L.P.Zhang, and Y,Y,Zhao, Mechanical response of Al Matrix Syntactic foams produced by pressure infiltration castings,J.compos.Mater,Vol 41,2007,p2105-2117 [9]F.Moreno ,CarlosJ.R.Gonzalez Oliver-compression creep of PM aluminum matrix composites reinforced with Sic short fibres-Journal of Material science and Engineering A 418:172-181,2006 [10]G.H.Wu et al, compressive behavior of cenospheres-Pure Aluminium Syntactic Foams,Scripta Mater., vol 56,2007,p221-224
Online since: April 2013
Authors: Fu Sheng Yu, Rong Lu Zhang, Yun Jiang Li, Bin Bin Jiao, Gui Lin Du, Tao Li
Constitutive Model of the Workpiece Material
An effective way to describe the constitutive behavior of the workpiece material is to input a precise workpiece material flow stress model under conditions of high strain rate with FEM[7].
Material flow stress model of workpiece is usually defined as functions on strain, strain rate and temperature.
The constitutive equation of material in finite element analysis software AdvantEdge is shown as (1)
Journal of Mechanical Engineering. 40,106-110(2004) (in Chinese) [4] Zheng Minli, Jiang Bin, Chen Binhu, Sun Yongjun: Research on High Speed Face Milling Cutter Based on the Model of Stress Field.J.
Materials Science Forum. 532-533, 341-344(2006) [5] Zhao Xianxiang, Tan Guangyu, Zhang Yuhua, Feng Xinmin: Stress Field Analysis of Milling Insert Based on Cellular Automata.J.
Material flow stress model of workpiece is usually defined as functions on strain, strain rate and temperature.
The constitutive equation of material in finite element analysis software AdvantEdge is shown as (1)
Journal of Mechanical Engineering. 40,106-110(2004) (in Chinese) [4] Zheng Minli, Jiang Bin, Chen Binhu, Sun Yongjun: Research on High Speed Face Milling Cutter Based on the Model of Stress Field.J.
Materials Science Forum. 532-533, 341-344(2006) [5] Zhao Xianxiang, Tan Guangyu, Zhang Yuhua, Feng Xinmin: Stress Field Analysis of Milling Insert Based on Cellular Automata.J.
Online since: September 2013
Authors: Zhan Guo Li, Xin Huang, Yin Cheng, Hai Yan Zhao
Research directions: Ground treatment and new building materials
Keywords: hydraulic fill sand; silt; stabilization; highway subgrade; strength;
Abstract.
Test materials and methods Test Materials: The following materials were used: Cement :(Ordinary Portland cement) P.O42.5, its 3d and 28d compressive strength are 18.5 MPa and 44.3MPa, respectively, Blaine fineness: 350 m2/kg; Slag: bulk density: 2.9 g/cm3, its 7d and 28d compressive strength are 75 MPa and 105MPa, respectively.
Acknowledgement This work was financially supported by the National Natural Science Foundation of China (NSFC) (Grant No. 51008007).
Contrastive Investigation into Activated Effects of Two Alkali-Activators on Geopolymers[J].Journal of South China University of Technology (Natural Science Edition),2007,35(8):108-111
Preliminary study of hardening mechanism of cement-stabilized soil [J].Chinese Journal of Geotechnical Engineering, 1994,16(1):62-68.
Test materials and methods Test Materials: The following materials were used: Cement :(Ordinary Portland cement) P.O42.5, its 3d and 28d compressive strength are 18.5 MPa and 44.3MPa, respectively, Blaine fineness: 350 m2/kg; Slag: bulk density: 2.9 g/cm3, its 7d and 28d compressive strength are 75 MPa and 105MPa, respectively.
Acknowledgement This work was financially supported by the National Natural Science Foundation of China (NSFC) (Grant No. 51008007).
Contrastive Investigation into Activated Effects of Two Alkali-Activators on Geopolymers[J].Journal of South China University of Technology (Natural Science Edition),2007,35(8):108-111
Preliminary study of hardening mechanism of cement-stabilized soil [J].Chinese Journal of Geotechnical Engineering, 1994,16(1):62-68.
Online since: October 2019
Authors: Akira Hosokawa, Tatsuaki Furumoto, Yuzo Ochi, Kentaro Oguchi, Yuji Chino, Tomoya Kawabe, Yohei Hashimoto, Tomohiro Koyano
Thermal stress cleavage using laser is one of the methods for processing hard and brittle materials.
Recent researches has focused on improving the processing characteristics of hard and brittle materials.
Some other researches of thermal stress cleavage of the hard and brittle materials have been carried out [6-9].
It is also reported that thermal stress cleavage is effective for sapphire which is one of hard and brittle materials [10,11].
Hosokawa, Thermal Stress Cleaving of Brittle Materials by Laser Beam, CIRP Annals, 51, 1 (2002) 149-152 [9] L.
Recent researches has focused on improving the processing characteristics of hard and brittle materials.
Some other researches of thermal stress cleavage of the hard and brittle materials have been carried out [6-9].
It is also reported that thermal stress cleavage is effective for sapphire which is one of hard and brittle materials [10,11].
Hosokawa, Thermal Stress Cleaving of Brittle Materials by Laser Beam, CIRP Annals, 51, 1 (2002) 149-152 [9] L.
Online since: December 2024
Authors: Rami Hawileh, Jamal A. Abdallah, Ghada Karaki, Maha Assad
Material models.
This suggests that the FE model may not fully capture the thermal insulation properties of the wall's unexposed side, which could be due to taking standard values for the thermal properties of the constituent materials (especially thermal conductivity) and not incorporating the actual/tested thermal properties of the materials since they are not mentioned.
Naser, “An approach for developing probabilistic models for temperature-dependent properties of construction materials from fire tests and small data,” Fire Mater, 2022, doi: 10.1002/fam.3116
Lee, “Fire resistance of reinforced concrete bearing walls subjected to all-sided fire exposure,” Materials and Structures/Materiaux et Constructions, vol. 46, no. 6, pp. 943–957, Jun. 2013, doi: 10.1617/s11527-012-9945-8
Naser, “Impact of the variability of material constitutive models on the thermal response of reinforced concrete walls,” Journal of Structural Fire Engineering, Apr. 2024, doi: 10.1108/JSFE-06-2023-0027
This suggests that the FE model may not fully capture the thermal insulation properties of the wall's unexposed side, which could be due to taking standard values for the thermal properties of the constituent materials (especially thermal conductivity) and not incorporating the actual/tested thermal properties of the materials since they are not mentioned.
Naser, “An approach for developing probabilistic models for temperature-dependent properties of construction materials from fire tests and small data,” Fire Mater, 2022, doi: 10.1002/fam.3116
Lee, “Fire resistance of reinforced concrete bearing walls subjected to all-sided fire exposure,” Materials and Structures/Materiaux et Constructions, vol. 46, no. 6, pp. 943–957, Jun. 2013, doi: 10.1617/s11527-012-9945-8
Naser, “Impact of the variability of material constitutive models on the thermal response of reinforced concrete walls,” Journal of Structural Fire Engineering, Apr. 2024, doi: 10.1108/JSFE-06-2023-0027
Online since: October 2018
Authors: E.A. Kungurov, Mikhail Erpalov
Models of samples for setting research objectives
The workpiece material DIN-C45 is selected from the Deform-3D materials database.
Mavljutov, Resistance of materials, Moscow: Nauka, 1986
Rabotnov, Resistance of materials, Moscow: Fizmatgiz, 1962
Ghoh, Effects of varying twist and twist rate sensitivities on the interpretation of torsion testing data, Materials Science & Engineering, 591 (2014) 9-17
Toth, The equivalent strain in high pressure torsion, Materials Science & Engineering, 607 (2014) 530-535
Mavljutov, Resistance of materials, Moscow: Nauka, 1986
Rabotnov, Resistance of materials, Moscow: Fizmatgiz, 1962
Ghoh, Effects of varying twist and twist rate sensitivities on the interpretation of torsion testing data, Materials Science & Engineering, 591 (2014) 9-17
Toth, The equivalent strain in high pressure torsion, Materials Science & Engineering, 607 (2014) 530-535
Online since: June 2010
Authors: Liang Chi Zhang, Mohammad Sharif Uddin
Heimke: Advanced Materials Vol. 6(2) (1996), p. 165
[2] E.
Panagiotopoulos et al.: European Journal of Surgical Traumatol Vol. 16 (2006), p. 55 [4] G.
Affolter et al.: Journal of Engineering in Medicine Proc.
Middleton et al.: Journal of Materials Science and Materials in Medicine Vol. 5 (1994), p.503 [7] Biolox Design: http:// www.
Weisse et al.: Journal of Biomechanics Vol. 36 (2003), p. 1633 [10] W.
Panagiotopoulos et al.: European Journal of Surgical Traumatol Vol. 16 (2006), p. 55 [4] G.
Affolter et al.: Journal of Engineering in Medicine Proc.
Middleton et al.: Journal of Materials Science and Materials in Medicine Vol. 5 (1994), p.503 [7] Biolox Design: http:// www.
Weisse et al.: Journal of Biomechanics Vol. 36 (2003), p. 1633 [10] W.
Online since: August 2014
Authors: Zhou Tao, Noah Utsumi, Masashi Yoshida
Aluminum alloys and aluminum nitride ceramics are promising candidates for heat dissipation materials.
Fukuzawa, Machining Characteristics of Insulating AlN Ceramics by Micro EDM, Journal of the Japan Society for Precision Engineering, 79 (2014) 541-546
Yamamoto, AlN Materials as the High Thermal Conductive Substrate, Journal of Surface Finishing Society, Japan, 62 (2011) 443-447
Tsunekawa, Surface Nitriding of Al-Mg Alloys Using a Rotary Barrel Tank, Key Engineering Materials, 523-524 (2012) 1080-1085
Berdahl, Spectral Emissivity of Anodized Aluminum and Thermal Transmittance of Aluminum Window Frames, Nordic Journal of Building Physics, 3 (2003) 1-12
Fukuzawa, Machining Characteristics of Insulating AlN Ceramics by Micro EDM, Journal of the Japan Society for Precision Engineering, 79 (2014) 541-546
Yamamoto, AlN Materials as the High Thermal Conductive Substrate, Journal of Surface Finishing Society, Japan, 62 (2011) 443-447
Tsunekawa, Surface Nitriding of Al-Mg Alloys Using a Rotary Barrel Tank, Key Engineering Materials, 523-524 (2012) 1080-1085
Berdahl, Spectral Emissivity of Anodized Aluminum and Thermal Transmittance of Aluminum Window Frames, Nordic Journal of Building Physics, 3 (2003) 1-12