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Online since: September 2004
Authors: Rachel A Tomlinson, G.C. Calvert
Calvert2,b
a
Department of Mechanical Engineering, University of Sheffield, Mappin Street, Sheffield, UK
2
Warwick Manufacturing Group, 3rd Floor ATC Building, University of Warwick, Coventry, UK
a
r.a.tomlinson@sheffield.ac.uk, bg.c.calvert@warwick.ac.uk
Keywords: Thermoelastic Stress Analysis, Surface stresses, Aerospace, Automotive
Abstract.
Case Study 3 - TSA of compressor blades with foreign object damage [6] The investigation of blade failures in aero-engines is a key issue in the structural integrity of the engine.
The new found portability of the equipment, allows the use of the technique on many more practical "real" engineering situations, thus providing designers with a quick and effective means of validating designs.
Cummings, Adam Hilger, New York, 1991 [2] Turner, S.R., and Pollard, N.G., Application of SPATE to high frequency vibration measurement of aero engine components, SPIE Vol. 713 Stress Analysis by Thermoelastic Techniques, 1987, pp. 162 - 177 [3] Purcell T.E., Dynamic stress analysis of gas turbine rotor airfoils using thermoelastic techniques, Experimental Techniques, May/June 1996, 9-13 [4] Greene, R.J., PhD thesis, University of Sheffield, 2003 [5] Stress Photonics DeltaTherm Application Note May 2000 [6] Tomlinson, R.A., Gower, I., Greene, R.J., Marsavina, L. and Patterson, E.A., Fatigue life assessment of compressor blades using thermoelasticity, Strain, (2004), in preparation [7] Tomlinson, R.A., Nurse, A.D., and Patterson, E.A., On determining stress intensity factors for mixed mode cracks from thermoelastic data, Fatigue and Fracture of Engineering Materials and Structures, 20, (2), (1997), 217-226 [8] Calvert, G.C., Stress analysis using rapid
prototyping techniques, Rapid Prototype Casebook, Professional Engineering Publishing Ltd, Section 1, pp45-52 2001 Notch tip
Case Study 3 - TSA of compressor blades with foreign object damage [6] The investigation of blade failures in aero-engines is a key issue in the structural integrity of the engine.
The new found portability of the equipment, allows the use of the technique on many more practical "real" engineering situations, thus providing designers with a quick and effective means of validating designs.
Cummings, Adam Hilger, New York, 1991 [2] Turner, S.R., and Pollard, N.G., Application of SPATE to high frequency vibration measurement of aero engine components, SPIE Vol. 713 Stress Analysis by Thermoelastic Techniques, 1987, pp. 162 - 177 [3] Purcell T.E., Dynamic stress analysis of gas turbine rotor airfoils using thermoelastic techniques, Experimental Techniques, May/June 1996, 9-13 [4] Greene, R.J., PhD thesis, University of Sheffield, 2003 [5] Stress Photonics DeltaTherm Application Note May 2000 [6] Tomlinson, R.A., Gower, I., Greene, R.J., Marsavina, L. and Patterson, E.A., Fatigue life assessment of compressor blades using thermoelasticity, Strain, (2004), in preparation [7] Tomlinson, R.A., Nurse, A.D., and Patterson, E.A., On determining stress intensity factors for mixed mode cracks from thermoelastic data, Fatigue and Fracture of Engineering Materials and Structures, 20, (2), (1997), 217-226 [8] Calvert, G.C., Stress analysis using rapid
prototyping techniques, Rapid Prototype Casebook, Professional Engineering Publishing Ltd, Section 1, pp45-52 2001 Notch tip
Online since: May 2025
Authors: Suradet Matchawet, Jobish Johns, Uraiwan Sookyung
Feasibility of Utilizing a Thermoplastic Elastomer Seal Made from a Natural Rubber Blend with Recycled Polypropylene from Packaging Waste
Uraiwan Sookyung1,a*, Suradet Matchawet2,b and Jobish Johns3,c
1Department of Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Srivijaya, Songkhla, Thailand
2Faculty of Science Technology and Agriculture, Yala Rajabhat University, Yala, Thailand
3Department of Physics, Rajarajeswari College of Engineering, Bangalore, India
auraiwan.so@rmutsv.ac.th, bsuradet.m@yru.ac.th, cjohnsjobish@gmail.com
Keywords: Thermoplastic Elastomer; Recycled Polypropylene; Waste; Gasket
Abstract.
Introduction The global demand for sustainable materials has driven significant advancements in developing eco-friendly polymers and composites.
By leveraging recycled materials, this research not only seeks to contribute to the development of sustainable materials but also to promote the circular utilization of plastic waste.
Method of Research Materials Natural rubber (NR) grade STR5L was manufactured by Chalong Latex Industry Co., Ltd. in Thailand.
The thermal decomposition test indicates the composition and thermal stability of the materials.
Introduction The global demand for sustainable materials has driven significant advancements in developing eco-friendly polymers and composites.
By leveraging recycled materials, this research not only seeks to contribute to the development of sustainable materials but also to promote the circular utilization of plastic waste.
Method of Research Materials Natural rubber (NR) grade STR5L was manufactured by Chalong Latex Industry Co., Ltd. in Thailand.
The thermal decomposition test indicates the composition and thermal stability of the materials.
Online since: January 2020
Authors: Yi Ying Gao, Ying Yan Hu, Jun Feng Wang, Can Li, Jian Qiang Li
Cooling Rate and Microstructural Investigation of Rapidly Solidified Spherical Mono-Sized Copper Particles
Ying-Yan Hu1,2,a, Jun-Feng Wang2,b, Can Li2,3,c, Yi-Ying Gao2,d,
Jian-Qiang Li2,4,e*
1School of Engineering and Technology, China University of Geosciences, Beijing, China
2National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
3School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
4School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, China
ayyhu@ipe.ac.cn, b276708543@qq.com, clican@ipe.ac.cn, dyygao@ipe.ac.cn, ejqli@ipe.ac.cn
Keywords: Mono-sized spherical copper particle; Rapid solidification; Sphericity; Structural; Cooling rate
Abstract.
Introduction Metal microsphere is an important class of industrial materials in the field of microelectronic interconnection and has been widely applied in many fields such as powder metallurgy, 3D printing, electronic packaging and metal injection modeling [1].
Since the material properties depend on the microstructures [3], in order to enable metallic materials with excellent properties, it is necessary to understand the microstructure evolution upon solidification process [20].
Experimental Procedures Pure Cu (with a purity of 99.99 wt.%) obtained from Beijing COMPO Technology Co., Ltd., Beijing, China was used as raw materials.
Introduction Metal microsphere is an important class of industrial materials in the field of microelectronic interconnection and has been widely applied in many fields such as powder metallurgy, 3D printing, electronic packaging and metal injection modeling [1].
Since the material properties depend on the microstructures [3], in order to enable metallic materials with excellent properties, it is necessary to understand the microstructure evolution upon solidification process [20].
Experimental Procedures Pure Cu (with a purity of 99.99 wt.%) obtained from Beijing COMPO Technology Co., Ltd., Beijing, China was used as raw materials.
Mechanical and Fungicidal Properties of approximately 100 Years Old Oak, Beech and Spruce Wood Beams
Online since: September 2013
Authors: Nejc Thaler, Miha Humar
Introduction
Wood has a number of excellent properties as a building material: it has a high strength to weight ratio, it is a good thermal insulator, it can be shaped and connected to form larger structures and it is one of the most sustainable and environmentally friendly materials.
This made many engineers and a significant part of the public sceptical about the use of wood.
Zwick Z100 / Z250 materials testing machine with central ball-lead screw - Product information. 2005
Shumka, The study of biological decay with church wooden materials in prespa lake area (Albania), Natura Montenegrina. 9: 3 (2010) 827–831
Zelinka, Moisture Relations and Physical Properties of Wood (Chapter 4), in: Wood Handbook - Wood as an Engineering Material, Forest Products Laboratory, Madison, 2010, pp. 1-19
This made many engineers and a significant part of the public sceptical about the use of wood.
Zwick Z100 / Z250 materials testing machine with central ball-lead screw - Product information. 2005
Shumka, The study of biological decay with church wooden materials in prespa lake area (Albania), Natura Montenegrina. 9: 3 (2010) 827–831
Zelinka, Moisture Relations and Physical Properties of Wood (Chapter 4), in: Wood Handbook - Wood as an Engineering Material, Forest Products Laboratory, Madison, 2010, pp. 1-19
Online since: May 2025
Authors: Vojtěch Kostiha, David Vašátko, František Girgle, Petr Štěpánek, Kateřina Mrkvova
FRP – 45° stirrups (reverse position)
Materials.
Experimentally determined properties of the used materials (mean values) GFRP Concrete fftm [MPa] 1350 fcm [MPa] 30.4 EfRm [GPa] 52.5 Ecm [GPa] 24.5 Experiment setup.
References [1] FINAL DRAFRT FprEN 1992-1-1: Eurocode 2 - Design of concrete structures - Part 1-1: General rules and rules for buildings, bridges and civil engineering structures.
European Committee for Standardization, April 2023 [2] ČSN EN 1992-1-1: Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for civil engineering.
Journal of Building Engineering [online]. 2022, 46.
Experimentally determined properties of the used materials (mean values) GFRP Concrete fftm [MPa] 1350 fcm [MPa] 30.4 EfRm [GPa] 52.5 Ecm [GPa] 24.5 Experiment setup.
References [1] FINAL DRAFRT FprEN 1992-1-1: Eurocode 2 - Design of concrete structures - Part 1-1: General rules and rules for buildings, bridges and civil engineering structures.
European Committee for Standardization, April 2023 [2] ČSN EN 1992-1-1: Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for civil engineering.
Journal of Building Engineering [online]. 2022, 46.
Online since: February 2006
Authors: J.C. Huang, C.J. Lee, C.I. Chang, C.H. Chuang, H.R. Pei
Huang
Institute of Materials Science and Engineering; Center for Nanoscience and Nanotechnology,
National Sun Yat-Sen University, Kaohsiung 804, Taiwan, ROC
(Corresponding author, J.
Also, the severe plastic deformation and material flow in the stirred zone can be utilized to achieve surface or bulk alloy modification via mixing of other elements or second phases into the stirred alloys.
The stirred materials can result in metal matrix composites [9-11] or intermetallic alloys [12] with much higher hardness and wear resistance.
Through the induced intermetallic phases during rigorous FSP deformation, the resulting materials will exhibit much more promising thermal and mechanical properties.
Hsieh: Key Eng.
Also, the severe plastic deformation and material flow in the stirred zone can be utilized to achieve surface or bulk alloy modification via mixing of other elements or second phases into the stirred alloys.
The stirred materials can result in metal matrix composites [9-11] or intermetallic alloys [12] with much higher hardness and wear resistance.
Through the induced intermetallic phases during rigorous FSP deformation, the resulting materials will exhibit much more promising thermal and mechanical properties.
Hsieh: Key Eng.
Online since: June 2014
Authors: Xiao Yan Li, Lai Hao Li, Xian Qing Yang, Shu Xian Hao
E-mail addresses: susanhao2001@163.com
1, b, Lai-hao Li 1, Xianqing Yang 1
1South China Sea Fisheries Research Institute, Chinese Academy
of Fishery Sciences, National Research and Development Center for Aquatic Product Processing, Key Laboratory of Aquatic Product Processing, Ministry of Agriculture, Guangzhou 510300, China;
2Shanghai Ocean University, Shanghai 201306, China
a768743224@qq.com, b susanhao2001@163.com
Keywords: actomyosin; biochemical characteristic; NaCl; degradation or denaturation
Abstract.
Materials and methods Materials and reagents Sturgeon used in the study was a cultured freshwater fish obtained from a local fish farm in Hangzhou, China.
All materials used for analysis were analytical grade.
The muscles were put into different vessels with material liquid ratio 1:10 and NaCL at concentration 0,5%,10%,15%,20%,25% to be salted for 5 h at 4.Then, took the fish fillets out and put them on separation net for 5 min to remove excess solution .
., Procedia Engineering, 2011. 15: 4819-4827.
Materials and methods Materials and reagents Sturgeon used in the study was a cultured freshwater fish obtained from a local fish farm in Hangzhou, China.
All materials used for analysis were analytical grade.
The muscles were put into different vessels with material liquid ratio 1:10 and NaCL at concentration 0,5%,10%,15%,20%,25% to be salted for 5 h at 4.Then, took the fish fillets out and put them on separation net for 5 min to remove excess solution .
., Procedia Engineering, 2011. 15: 4819-4827.
Online since: October 2011
Authors: Jing Yi Chang, Sheng Shian Liou, Yean Der Kuan, Jia You Wang, Chung Tang Liu, Sheng Ching Chan
Integration of Hybrid Energy System in Vehicle
Jing-Yi Chang1,a, Yean-Der kuan2,b*, Jia-You Wang2,c, Sheng-Shian Liou2,d,
Chung-Tang Liu2,e, Sheng-Ching Chan2,f
1 National Chin-Yi University of Technology Introduction of Integrated Research Center for Green Living Technologies
(NO 57, Section 2, Zhongshan Road, Taiping Dist, Taichung 41170, Taiwan)
2 National Chin-Yi University of Technology Department of Refrigeration, Air-Conditioning and Energy Engineering
(NO 57, Section 2, Zhongshan Road, Taiping Dist, Taichung 41170, Taiwan)
aE-mail:jychang@ncut.edu.tw, bE-mail:ydkuan@ncut.edu.tw,
cE-mail:allen200410@yahoo.com.tw, dE-mail:qoo750816@hotmail.com,
eE-mail:tomlinger1208my@yahoo.com.tw, fE-mail:5pj6fm4@gmail.com
Keywords: Proton Exchange Membrane Fuel Cell, Hybrid Energy System, Hydrogen Vehicle, Hybrid Vehicle.
Taiwan has promoted the development of key technologies for hybrid hydrogen-oxygen fuel cell vehicles, the energy saving and carbon free environmental protection awareness of hybrid hydrogen-oxygen fuel cell vehicles, hydrogen fuel cell vehicle concepts, and relevant talent cultivation programs.
The material of the vehicle body is welded lightweight hollow iron tubes.
The vehicle shell uses lightweight fiber glass composite materials of high strength and good formability.
In addition, major considerations are the car shell shape and vehicle material selection in order to achieve a streamlined shape, with light weight materials and high malleability.
Taiwan has promoted the development of key technologies for hybrid hydrogen-oxygen fuel cell vehicles, the energy saving and carbon free environmental protection awareness of hybrid hydrogen-oxygen fuel cell vehicles, hydrogen fuel cell vehicle concepts, and relevant talent cultivation programs.
The material of the vehicle body is welded lightweight hollow iron tubes.
The vehicle shell uses lightweight fiber glass composite materials of high strength and good formability.
In addition, major considerations are the car shell shape and vehicle material selection in order to achieve a streamlined shape, with light weight materials and high malleability.
Online since: July 2015
Authors: Ayub M. Som, Norhayati Talib, Mohammad Asadullah, Muhammad Ilmam B. Saringat
Saringat 1,a, Ayub Md Som1 and Norhayati Talib 1
and Mohammad Asadullah* 2,b
1Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
a ilmam.saringat@gmail.com, basadullah@salam.uitm.edu.my
Keywords: Biomass pyrolysis, Thermally thick biomass, Kinetic parameters, Thermogravimetric analysis.
Pyrolysis is a decomposition of carbonaceous materials by using heat in the absence of oxygen and reacting gases.
In addition the reaction mechanism varies for varieties of biomasses due to the variation of the key compositions.
Pyrolysis of these materials involves complex mechanisms which depend on heat and mass transfer processes.
Quartz sand of 400-500 μm size was used as fluidized bed materials.
Pyrolysis is a decomposition of carbonaceous materials by using heat in the absence of oxygen and reacting gases.
In addition the reaction mechanism varies for varieties of biomasses due to the variation of the key compositions.
Pyrolysis of these materials involves complex mechanisms which depend on heat and mass transfer processes.
Quartz sand of 400-500 μm size was used as fluidized bed materials.
Online since: August 2023
Authors: Qiang Zhu, Xiao Gang Hu, Zhong Li, Hong Xing Lu
Zhu1,2,d
1Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China
2Shenzhen Key Laboratory for Additive Manufacturing of High-performance materials, Shenzhen 518055, China
a11964001@mail.sustech.edu.cn, bhuxg@sustech.edu.cn, cluhx@sustech.edu.cn, dzhuq@sustech.edu.cn
Keywords: metal direct writing, aluminum alloys, solid fraction, shape factor, size distribution
Abstract.
Seitz, Beamless Metal Additive Manufacturing, Materials (Basel). 13 (2020)
Brabazon, Routes to Spheroidal Starting Material for Semisolid Metal Processing.
Comprehensive Materials Processing 5, 135-148, (2014)
Seitz, Beamless Metal Additive Manufacturing, Materials (Basel). 13 (2020)
Brabazon, Routes to Spheroidal Starting Material for Semisolid Metal Processing.
Comprehensive Materials Processing 5, 135-148, (2014)