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Experimental The shaft material was AISI 1030 steel.
Two machined sides of same material were fixed together by a jig plate with screws to hold it aligned.
A replacement block was fabricated, using the same material having exactly the same dimensions and shape with the removed portion.
The replacement block was then joined with the two pieces of the shaft by TIG welding (without filling material) to create one uniform material structure with a crack depth of 40% of the diameter.
This work was supported by Faculty Research Grant Scheme 2010 from the Faculty of Computing, Health and Science, Edith Cowan University, Australia.

In fact, the coil springs are made of elastic materials to provide comfort in driving.
In fact, the calculated values reached only 40% of the material's yield strength.
Shegokar, Modelling and analysis of helical coil spring under different load condition by using FEM, International Journal of Engineering Sciences & Research Technology, 6 (2017) 444–451
Kengar, Finite element analysis of helical coil compression spring for three wheeler automotive front suspension, International Journal of Mechanical and Industrial Engineering, 2 (2012) 74-77
Prakasa, Prediction of the fatigue life of the SAE 5160 carbon steel coil spring based on strain-life approach, Key Engineering Materials, 841 (2020) 381-386

Materials and Methodology 2.1.
Materials This work was carried out by using alpha-alumina powder (α-Al2O3 99.70% purity, a mean particle size of 0.62µm) as the main starting material.
Also gratefully acknowledge School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia.
Solid State Science and Technology, 2010. 18(1): p. 155-163
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Hegazi, Recovery of sodium hydroxide from Trona ore and calcium carbonate as raw materials, Int.
Journal of Petroleum Science and Engineering, 179(2019) 1173–1185. doi:10.1016/j.petrol.2019.04.086
Journal of Petroleum Science and Engineering, 133(2015), 612–621.doi:10.1016/j.petrol.2015.07.009 [15] F.
[29] Raw Materials Research and Development Council.
Journal of Petroleum Science and Engineering, 171(2018), 253–259. doi:10.1016/j.petrol.2018.07.049

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A simplified model of semi-open impeller stage and analysis of its effects on the transient flow Muting Hao1, a, Rong Xie1, b,*, Liang Guan2, Zifu Lu1 1Faculty of Mechanical Engineering , Materials and Energy, Dalian University of Technology, Dalian, P.
China, 116024; 2China Aerospace Science and Technology Corporation, Shanghai, P.
AIAA Journal, 1982
Journal of Engineering Thermophysics, 2008, 29(9) 1495-1498 [8] Zhou Li,Xi Guang, Cai Yuanhu.
[J] Energy Education Science and Technology Part A: Energy Science and Research, 2014, 32(2) 1085-1092.

Still forming certain raw materials into the appropriate shapes is the challenge in subtractive manufacturing industries and these materials are categorized as hard to machine material.
Which causes brittle materials to become ductile [1,2]. 2.
Heat Sources Hard materials or difficult to cut materials are always subjected for facing problems of low material removal rate, high surface roughness and low machinability.
Machining and Machinability of Materials, Vol. 18, Nos. 5/6, (2016)
Series: Materials Science and Engineering 872, (2020)

facility management B32 Fire control facilities equipment management B33 Fire control room managementB34 Management of using fire, electricity, gas and oil B35 Fire inspection, inspections, self examination B36 Fire hidden rectification B37 Building inclusions and habitant A4 Flammability of materials within the building B41 Quality of unit area burnable B42 Architectural purposes B43 Building occupant density B44 Staff fire prevention training B45 Fire control propaganda and educationB46 Personnel fire consciousnessB47 Build pair-wise comparison fuzzy matrixes.
After the sorting values ofare ranked according to the numerable values, we know that the important factors influencing high-rise building fire risk include: automatic sprinkler and gas fire extinguishing system, building against-fire management, probe decorate position and fire alarm device, transmission and distribution lines and lighting, management of using fire, electricity, gas and oil, material flammability, indoor and outdoor fire hydrant system, fire control room management, fire inspection, inspections, self-examination, building structure, Staff fire prevention training and so on.
The material inside the building is an important factor of fire, so we should use fire and flame resistant materials.
Saaty, How To Make A Decision: The Analytic Hierarchy Process [2] Kamal, M.Al-Subhi ,Al-Harbi, Application of the AHP in project management, International Journal of Project Management,.(2001) [3] Zhao Lang, Wang Liang, Improvement for two faults of AHP, JOURNAL OF XI AN UNIVERSITY OF SCIENCE AN D TECHNOLOGY.(2007) [4] Jijun Zhang, Fuzzy Analytical Hierarchy Process, Fuzzy Systems and Mathematics. (2001) [5] LI Zhan, Zhou Shiguo1,Wang Ke, A Method for Constructing Perfectly Consistent Judgement Matrix in AHP, J．of Zhengzhou Univ.
Ed.). (2008) [6] Du Hong-bing, Zhou Xin-quan, Zhang Jing-zong, Fuzzy Synthetic Evaluation for Fire Safety of High-Rise Buildings, Journal of China University of Mining &Technology.(2002) [7] TaoYu—hui, How to Make Fuzzy Consistent Judgement Matrix of the FAHP, Journal of Sichuan Teachers College(Natural Science). (2002) [8] Fan Zhi ping, Jiang Yan ping, An Overview on Ranking Methods of Fuzzy Judgement Matrix, Systems Engineering.(2001) [9] Jia Shui-ku, Tian Bin, Application of Analytical Hierarchy Process in Fire Risk Assessment of High-rise Student Dormitory, China Safety Science Journal.(2001) [10] Public security fire, ≪High-rise building fire safety management regulations≫.(2010)

Experimental equipment and related materials This experiment machine uses the model for vertical lifting platform milling machine XW5032, handle is the Sandvik model for the R290-080Q27-12H handle, blade type is R290-12T308M-PM.
The experimental materials are the heated treatment bar of the 300M ultra high strength steel, milling cutter and workpiece size are shown in Fig.1.
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Journal of Shandong University of Science and Technology, (2002), 24(3):9-13

Mendala, Corrosion Resistance of Zinc Coatings Obtained in High-Temperature Baths, Materials Science 39 (5) (2003) 652-657
Series – Materials Science and Engineering 35 (2012) 012003
Series – Materials Science and Engineering 35 (2012) 012004
Series – Materials Science and Engineering 22 (2011) 012005
Ser.: Materials Science and Engineering 35 (2012) 012002