Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: September 2023
Authors: Rahul Singhal, Clevin Toppo, Rupak Biswakarma, Pratap Roy, Sristy Sahu, Ujjal Kalita
Journal Of Spacecraft And Rockets, 7(1), 49-53
Journal Of Propulsion And Power
Journal Of Propulsion And Power, 14, 588-604
Aerospace Science And Technology
Journal Of Fluids Engineering, 123, 500-506
Journal Of Propulsion And Power
Journal Of Propulsion And Power, 14, 588-604
Aerospace Science And Technology
Journal Of Fluids Engineering, 123, 500-506
Online since: August 2019
Authors: Darminto Darminto, Gatut Yudoyono, Nurul Yanti Cahaya, Gontjang Prajitno, Nurrisma Puspitasari
DSSC is composed of five parts, namely transparent conductive glass as a substrat; titanium dioxide as a semiconductor materials; chlorophyll as a dye sensitizer, carbon as a catalyst which can convert energy of light into electrical energy.
DSSC has several advantages, including its easy, simple fabrication process without the use of sophisticated equipment, lower cost fabrication, and the abundance of starting materials availability.
Experimental Materials and synthesis The materials used in this research : TiCl3 (Merck), NH4OH (Merck), Alfalfa chlorophyll, Active Carbon, ITO (Indium Tin Oxide) that has been cleaned by ultrasonic cleaner, ethanol, , HNO3 (Merck), Acetic Acid (Merck) Triton X-100 (Merck), aquades, PEG (polyethylene glycol), iodine (Merck), Acetonitrile (VWR), and KI (Potassium Iodide).
The Decreasing of resistance before and after immersion is due to the composition of the dye chlorophyll constituent used in this study there are materials that have high electrical conductivity.
Series: Materials Science and Engineering 214 (2017) 012022
DSSC has several advantages, including its easy, simple fabrication process without the use of sophisticated equipment, lower cost fabrication, and the abundance of starting materials availability.
Experimental Materials and synthesis The materials used in this research : TiCl3 (Merck), NH4OH (Merck), Alfalfa chlorophyll, Active Carbon, ITO (Indium Tin Oxide) that has been cleaned by ultrasonic cleaner, ethanol, , HNO3 (Merck), Acetic Acid (Merck) Triton X-100 (Merck), aquades, PEG (polyethylene glycol), iodine (Merck), Acetonitrile (VWR), and KI (Potassium Iodide).
The Decreasing of resistance before and after immersion is due to the composition of the dye chlorophyll constituent used in this study there are materials that have high electrical conductivity.
Series: Materials Science and Engineering 214 (2017) 012022
Online since: December 2010
Authors: Jer Ren Yang, Meng Yang Chen, Bo Ming Hwuang
Microstructural Characterizations of Ultra-high Strength Steel Bars
Mengyang Chena, Boming Hwuangb, and Jerren Yangc
Institute of Materials Science and Engineering, No. 1, Sec. 4, Roosevelt Rd., Da-an Dist., Taipei City 10617, Taiwan (R.O.C)
af97527037@ntu.edu.tw, bd98527005@ntu.edu.tw, cjryang@ntu.edu.tw
Keywords: inter-phase precipitation; pearlite; yield strength; transmission electron microscopy (TEM); stress-strain curves.
These two features are useful for construction engineers to choose the suitable materials to meet different requirements.
A flat yield plateau means the onset of work hardening would occur later, which helps engineers predict the time after which materials start to fail, and prevents materials from starting to be hardened immediately after yielding [1].
The amount of strain can rise to 1.4% before the onset of work hardening, which assures sufficient deformation before failure of the materials.
Bhadeshia, Welding Journal 69 (1990) S305
These two features are useful for construction engineers to choose the suitable materials to meet different requirements.
A flat yield plateau means the onset of work hardening would occur later, which helps engineers predict the time after which materials start to fail, and prevents materials from starting to be hardened immediately after yielding [1].
The amount of strain can rise to 1.4% before the onset of work hardening, which assures sufficient deformation before failure of the materials.
Bhadeshia, Welding Journal 69 (1990) S305
Online since: February 2019
Authors: L.V. Radionova, Viacheslav V. Shirokov, Sergei R. Faizov, Maxim A. Zhludov
Radionov and others, Software for automated calculation of source saving routes and hardening while carbon wire drawing, Materials science and thermal metal treatment: Internat. col. scient. works.; edit. by A.N.
Radionova, Technology production of high-strength wire with high plastic properties, Sworld collection of scientific works based on materials of interational scientific practical conference. 6(1) (2013) 12-16
[10] Sy-Wei Lo, Yuung-Hwa Lu, Wire drawing dies with prescribed variations of strain rate, Journal of materials processing technology, 123 (2002) 212-218
Luri, Comparison between finite element method and analytical methods for studying wire drawing processes, Journal of materials processing technology. 164-165 (2005) 1218-1225
Sebastian, Calculation of the forward tension in drawing processes, Journal of Materials Processing Technology, 162-163 (2005) 551-557
Radionova, Technology production of high-strength wire with high plastic properties, Sworld collection of scientific works based on materials of interational scientific practical conference. 6(1) (2013) 12-16
[10] Sy-Wei Lo, Yuung-Hwa Lu, Wire drawing dies with prescribed variations of strain rate, Journal of materials processing technology, 123 (2002) 212-218
Luri, Comparison between finite element method and analytical methods for studying wire drawing processes, Journal of materials processing technology. 164-165 (2005) 1218-1225
Sebastian, Calculation of the forward tension in drawing processes, Journal of Materials Processing Technology, 162-163 (2005) 551-557
Online since: September 2012
Authors: Hua Jing Zhu, Ze Li Chen, Ling Xu
Because of its widely raw materials, low price, non-toxic, and high whiteness, it has been widely used[1].
Nano-sized calcium carbonate is developed in the 1980s as a new type of ultrafined solid materials.
It is a new type of high-grade functional inorganic materials since its particle size is between 1 ~ 100 nm and its activity is good.
[2] Zhang Shi-cheng, Han Yue-xin, Jiang Jun-hua, WANG Hong-kuan, Studies on the Crystallization of Nano Calcium Carbonate in the Reaction System Ca(OH)2-H2O-CO2,Journal of Northeastern University(Natural Science),Vol2,No.2,Apr,2000
[5] Lin Rong-yi, Zhang Pei-xin, Yan Jia-qiang, Chinese Journal of Materials Research,Vol.13,No.6,Dec,1999.
Nano-sized calcium carbonate is developed in the 1980s as a new type of ultrafined solid materials.
It is a new type of high-grade functional inorganic materials since its particle size is between 1 ~ 100 nm and its activity is good.
[2] Zhang Shi-cheng, Han Yue-xin, Jiang Jun-hua, WANG Hong-kuan, Studies on the Crystallization of Nano Calcium Carbonate in the Reaction System Ca(OH)2-H2O-CO2,Journal of Northeastern University(Natural Science),Vol2,No.2,Apr,2000
[5] Lin Rong-yi, Zhang Pei-xin, Yan Jia-qiang, Chinese Journal of Materials Research,Vol.13,No.6,Dec,1999.
Online since: September 2011
Authors: Chao Zhang, Bai Quan Lin, Wen Xia Li, Cheng Zhai, Chuan Jie Zhu
With the continuous development of science and technology, new materials, nano-aluminum powder came into being, and became more and more popular in the production and the daily life.Domestic and foreign scholars in this field also carried out extensive researches on the explosive characteristics of aluminum powder, which include the mechanism of dust explosive, explosive characteristics and its influencing factors, numerical simulation and dust explosive prevention and protective measures.
Only when the combustible materials burn out, the explosive pressure and the flame propagation speed will reduce and decrease slowly, and then tend to level off, and finally return back to the normal status.
LI, Ordnance Journal, Vol. 19 (1998) No.2, p.176
Ordnance Journal, Vol. 16(1995), No.3, p.59
Energetic Materials, Vol. 11(2003), No.2, p.91
Only when the combustible materials burn out, the explosive pressure and the flame propagation speed will reduce and decrease slowly, and then tend to level off, and finally return back to the normal status.
LI, Ordnance Journal, Vol. 19 (1998) No.2, p.176
Ordnance Journal, Vol. 16(1995), No.3, p.59
Energetic Materials, Vol. 11(2003), No.2, p.91
Online since: September 2013
Authors: Yan Chen, Jing Zhang
Introduction
The viewpoints on values and lifestyles of consumers have become hot research subjects in both social science and marketing areas around the world.
Comparing the three basic elements ( style, color and material) with price, finance upholders and family lovers prefer lower price.
The health advocators are more attracted by the materials which bring them comfortable feelings.
Journal of Retailing, 2001
[7] Ulga W., and Eggert A., Relationship Value in Business Markets, The Construct and Its Dimensions, Journal of Business-to-Business Marketing, 2005, 12(1): 73-99
Comparing the three basic elements ( style, color and material) with price, finance upholders and family lovers prefer lower price.
The health advocators are more attracted by the materials which bring them comfortable feelings.
Journal of Retailing, 2001
[7] Ulga W., and Eggert A., Relationship Value in Business Markets, The Construct and Its Dimensions, Journal of Business-to-Business Marketing, 2005, 12(1): 73-99
Online since: September 2013
Authors: Wen Hua Zhang, Xiu Li Yang
Introduction
N-butyl propionate is a widely used organic chemical raw materials, with apricot, peach fruit aroma, mainly used in food and daily chemical industry.
N-butyl propionate is produced usually by concentrated sulphuric acid as catalyst, by propionic acid and n-butanol esterification as materials.
References [1] Keqin Xu, Handbook of Organic Fine Chemical Raw Materials and Intermediate.
[3] Jin Lin, Huating Liu and Ruqi Zhao, Chinese Journal of Inorganic Chemistry.
[6] Yin Chen, Xue Sun, Jinlian Li, Yawen Zhang and Peng Yang, Science & Technology in Chemical Industry, Vol 18, No. 3, June 2010, pp11-15, In Chinese
N-butyl propionate is produced usually by concentrated sulphuric acid as catalyst, by propionic acid and n-butanol esterification as materials.
References [1] Keqin Xu, Handbook of Organic Fine Chemical Raw Materials and Intermediate.
[3] Jin Lin, Huating Liu and Ruqi Zhao, Chinese Journal of Inorganic Chemistry.
[6] Yin Chen, Xue Sun, Jinlian Li, Yawen Zhang and Peng Yang, Science & Technology in Chemical Industry, Vol 18, No. 3, June 2010, pp11-15, In Chinese
Online since: September 2017
Authors: A.D. Abramov, A.S. Ilinykh, Je.S. Sidorov, M.S. Galay
The quality of the welded joints depends on such factors as the quality of thermite material, the proper installation of welding molds, the control of the preheating rail duration, the duration of soaking until the mold is removed, the displacement of the rails in the process of solidification, etc.
Initial installations for modeling the cooling process of a welded joint with a mold (Model No. 1): steel grade – rail steel; the material of the form is quartz sand; the temperature of the filled metal is 2500 °С; the temperature of the rails and mold is 850 °С.
Thus, computer modeling with the LVMFlow program provides the possibility of visual analysis of the metal behavior during crystallization of the casting and optimization of the welding process due to changes in the geometry of the mold and the composition of the welding material.
[3] Brânzei M., Coman T. 2012 Structure Improvement of Aluminothermic Welding Joints by Using Modifiers International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering 6 (8) 745-748
B., Ilinykh A.S., Galay M.S. and Sidorov Je S 2016 The effect of normalization on the structure and mechanical properties of rails aluminotermitic welded joints Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) – Metal Working and Material Science 1(70) 60-66 DOI: 10.17212/1994-6309-2016-1-60-66 [6] Kargin V.A., Tikhomirova L.B., Galay M.S. and Kuznetsova Y.S. 2015 Improving service properties of welded joints produced by aluminothermic welding Welding International 29(2) 155-157 [7] Kargin V.A., Tikhomirova L.B., Abramov A.D. and Galai M.S. 2014 Effect of vibroimpact treatment on the physical and mechanical properties on the surface layer of welded joints in rails Welding International 28 (3) 245-247 [8] Mouallif Z., Radi B. and Mouallif I. 2015 The Thermomechanical Modeling of Aluminothermic Welds Affected by Different Defects International Journal of Engineering Research and Development 11 44-48 [9] Sidki F., Mouallif I., Mouallif Z. and Benali A. 2012 Finite element
Initial installations for modeling the cooling process of a welded joint with a mold (Model No. 1): steel grade – rail steel; the material of the form is quartz sand; the temperature of the filled metal is 2500 °С; the temperature of the rails and mold is 850 °С.
Thus, computer modeling with the LVMFlow program provides the possibility of visual analysis of the metal behavior during crystallization of the casting and optimization of the welding process due to changes in the geometry of the mold and the composition of the welding material.
[3] Brânzei M., Coman T. 2012 Structure Improvement of Aluminothermic Welding Joints by Using Modifiers International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering 6 (8) 745-748
B., Ilinykh A.S., Galay M.S. and Sidorov Je S 2016 The effect of normalization on the structure and mechanical properties of rails aluminotermitic welded joints Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) – Metal Working and Material Science 1(70) 60-66 DOI: 10.17212/1994-6309-2016-1-60-66 [6] Kargin V.A., Tikhomirova L.B., Galay M.S. and Kuznetsova Y.S. 2015 Improving service properties of welded joints produced by aluminothermic welding Welding International 29(2) 155-157 [7] Kargin V.A., Tikhomirova L.B., Abramov A.D. and Galai M.S. 2014 Effect of vibroimpact treatment on the physical and mechanical properties on the surface layer of welded joints in rails Welding International 28 (3) 245-247 [8] Mouallif Z., Radi B. and Mouallif I. 2015 The Thermomechanical Modeling of Aluminothermic Welds Affected by Different Defects International Journal of Engineering Research and Development 11 44-48 [9] Sidki F., Mouallif I., Mouallif Z. and Benali A. 2012 Finite element
Online since: May 2013
Authors: Zong Yue Bi, Lin Yun Xian
The research results would provide theoretical support for fatigue life prediction and safety operation of the coiled tubing.
1 Experiment and material
The material investigated is domestic CT80 grade coiled tubing with a chemica1 composition (mass ,%)of C 0.12,Mn0.90,Cr o.50, Mo0.15, Ni0.15, Si 0.36,Cu 0.25 and small amount of Nb, V, Ti as well.
Analysis of low cycle fatigue life prediction models Research and Exploration IN [7] Mirko Klesnil et al.Fatigue of Metallic Materials, Materials Science Monograph, 1980. (7):25 [8] Chen L J,Wu W P.K.Liaw.
ACTA Metallurgica Sinica 2006 42(9) :952-958 [9] GuardY S.A new approach to the evaluation of faitgueUnder multi-axial loadings[J].Journal of Engineer in Mateiralsnad Technology,Tran sactions of ASME,1981,l03:118~125
[10] Shang D G, Yao W X, Wang D J .Study on cyclic stress strain relation under tension torsion complex loading .Chinese Journal of Applied Mechanic.1999, 16(3):66-70 [11] Chen L, Jiang J L, Fan Z C, Dission of energy models for low cycle fatigue life prediction.
Analysis of low cycle fatigue life prediction models Research and Exploration IN [7] Mirko Klesnil et al.Fatigue of Metallic Materials, Materials Science Monograph, 1980. (7):25 [8] Chen L J,Wu W P.K.Liaw.
ACTA Metallurgica Sinica 2006 42(9) :952-958 [9] GuardY S.A new approach to the evaluation of faitgueUnder multi-axial loadings[J].Journal of Engineer in Mateiralsnad Technology,Tran sactions of ASME,1981,l03:118~125
[10] Shang D G, Yao W X, Wang D J .Study on cyclic stress strain relation under tension torsion complex loading .Chinese Journal of Applied Mechanic.1999, 16(3):66-70 [11] Chen L, Jiang J L, Fan Z C, Dission of energy models for low cycle fatigue life prediction.