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Introduction The effort of reducing the greenhouse gas emission from high temperature firing for construction materials such as Portland cement, ceramic products and refractory manufacturing has become a motivation to develop environmental friendly construction materials.
An inorganic polymer referred to as “geopolymers” coined by Davidovits [1] is alkali activated alumino-silicate materials which possess excellent physical and chemical properties for wide range scale of applications in building and construction materials [2, 3].
Materials and methods Materials Class C fly ash according to the ASTM C618 classification was used as the main part of raw materials to prepare fly ash-based geopolymers.
Fig. 5 showed FTIR analysis of raw materials and synthesized geopolymer.
Acknowledgements The authors gratefully acknowledged the financial supports from the National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency (NSTDA) under the Platform Technology Funding no.

Piggott, B.Harris, Compression Strength of Carbon, Glass and Kevlar-49 Fiber Reinforced Polyester Resins, Journal of Materials Science 15 (1980)
Hull, An Introduction to Composite Materials, Cambridge University Press London, (1988)
Anand, Utilization of Fly Ash as Filler for Unsaturated Polyester Resin, Journal of Applied Polymer Science. 69. (1998).
[7] M.Paauw, A.Pizzi, Some Filler Effects on Cross-Linking of Unsaturated Polyesters, Journal of Applied Polymer Science. 50 (1993)
[8] T.Hirai, D.E.Kline, Dynamic Mechanical Properties of Graphite-Epoxy and Carbon-Epoxy Composites, Journal of Composite Materials. 7 (1973)

The current research on vehicle seat safety mainly focuses on dispersing force on passengers during collision, the influences of applying new materials and molding technologies to seats, as well as saving costs, etc[1-13].
The chosen materials for backrest steel pipe, backrest steel wire, seat locking mechanism, body top-locking mechanism, under- mounting points and center support bracket are respectively Q235B, Q235B, ST12, B210P1, ST12, ST12, while the specifications for the first two materials are 25*1.5 and 5.
Ergonomics-based seat design method for the light truck cab, Journal of Chongqing Institute of Technology: Natural Science [J],2008,22(9):20-24 [5] Xiya Guo, Xiang Meng.
The dynamic strength simulation and analyses of the automotive seat based on ADAMS, Journal of Shanxi University of Science & Technology [J], 2007, 25(2):100-104
Journal of Chongqing Institute of Technology: Natrual Science, 2008,22(9):20-24

Aerosol measurement is used in a variety of fields such as nanotechnology, materials science, pollution monitoring, air quality measurements, combustion and engine exhaust analysis, inhalation toxicology, and medical studies.
Additionally, it is the only material independent and relatively efficient method.
Journal of Aerosol Research.
Songklanakarin Journal of Science and Technology.
Journal of Colloid and Interface Science.

Drilling is one of the common machining processes used on composite materials for making holes for screws, rivets, and bolts.
Since composite materials are neither homogeneous nor isotropic, the drilling of these materials can lead to damages in the regions around the drilled holes.
Ramachandra : Journal of Materials Processing Technology, Vol. 186 (2007), p. 265 – 271
Wang : Machining Science and Technology, Vol. 5(3) (2001), p. 293- 305
Abrate in: Machining of Composite Materials, edtied by Mallick, P.K.

The total resin material cost is constrained to be 20% of the original design with full material usage.
Acknowledgement This work was supported by a grant from National Science Fund for Distinguished Young Scholars (No. 10925212), the National Natural Science Foundation of China (90916027), 111 Project (B07050), the Key Sci-Tech Project of the Ministry of Science and Technology (2009ZX04014-75) and the Basic Research Foundation of Northwestern Polytechnical University (CJ201009).
Dickens: Rapid Prototyping Journal Vol. 7 (2001), p. 66-72 [5] C.
Braibant: International Journal of Numerical Methods in Engineering Vol. 23 (1986), p. 409-428 [6] K.
Svanberg: International Journal for Numerical Methods in Engineering Vol. 24 (1987), p. 359-373

Another feature is that the combustion materials are easy formed in the combustion process.
The combustion materials are not easy delaminated and can be ignored easily.
Anselmi-Tamburini: Materials Science Report, Vol. 3 (1989), p.277
[10] Tao Lin, Shiju Guo, Sheng Yin, et al: Journal of University of Science and Technology Beijing, Vol. 9 (2002), p.221(In Chinese)
[12] Guibo Yu, Weu Yau, Shuhai Wang, et al: Journal of University of Science and Technology Beijing, Vol. 13(2006), p.178(In Chinese).

Femtosecond laser was used to produce micro- and nano-scale features on the surface of vary metals [2] and semiconductor materials [3, 4, 5].
Experimental The laser system of our experiment has full advantage of high quality Ytterbium doped materials.
Reference [1] Hideo Aida，Toshiro Doi，Hidetoshi Takeda，Haruji Katakura，Seong-Woo Kim，Koji Koyama Tsutomu Yamazaki，Michio Uneda，Ultraprecision CMP for sapphire, GaN, and SiC for advanced optoelectronics materials，Proceedings of the Second International Symposium on Hybrid Materials and Processing Busan, Korea, 27-29 October [2] K.M.
Study of a highly efficient precision processing for hard-to-process materials(1st report)－Proposal of a polishing process with new concepts－ [8] Fujita,et al.
Femtosecond laser process, Journal of Plasma and Fusion Research, Vol.81, Suppl.(2005), pp.195-201

Recently, several researchers have used MCDM tools/applications to solve different problems such as engineering [13] science and technology [9, 10, 14].
Ten different materials were used in this case study.
The data are collected from various sources including material handbooks and material suppliers.
Material properties for case study-1 Materials Hardness (HB) Machinability rating (%) Cost (US $/lb) Corrosion resistance 1.
Springer Science + Business Media, Inc.,2005 [3] Behzadian, M., Kazemzadeh, R.B., Aghdasi, M., Albadvi, A., “PROMETHEE: A comprehensive literature review of applications and methodologies”, European Journal of Operational Research, 200(1), 198–215, 2010 [4] Vaidya, O.S. and Kumar, S., “Analytic hierarchy process: An overview of applications”, European Journal of Operational Research, 169(1), 1–29, 2006 [5] Ho, W., “Integrated analytic hierarchy process and its applications – a literature review”, European Journal of Operational Research, 186(1), 211–228, 2008 [6] Hwang, C.L. and Yoon, K.P., “Multiple attribute decision making: Methods and applications”, New York: Springer-Verlag.,1981 [7] Banaitiene, N., Banaitis, A., Kaklauskas, A., & Zavadskas, E.K., “Evaluating the life cycle of a building: A multivariant and multiple criteria approach”, Omega, 36, 429–441,2008 [8] Behzadian, M., Khanmohammadi Otaghsara, S., Yazdani, M., & Ignatius, J., “A state-of the-art survey of TOPSIS applications

Materials and Methods Materials The realization of this study involved the use of some materials during the field measurement of the soil resistivity at test locations and the laboratory analysis of the soil samples from the locations for the determination of the moisture content.
Lower ρs values were, however, observed at greater values of D; suggesting the presence of materials with increased MC and low T that improved the soil conductivity at these D values.
IOP Conference Series: Materials Science and Engineering, 864(1) (2020) 012185
IOP Conference Series: Materials Science and Engineering. 864(1) (2020) 012163
Makanju, Evaluation of steel reinforcement earthing in swamp building, International Journal of Science and Engineering Investigations. 8(90) (2019) 67-73