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The test results show that the failure modes of the multi-tooth mandrel are mainly wear and fracture in terms of mandrel materials.
So, it is firstly chosen as material of the mandrel.
(3) Mandrel failure forms depend on the mandrel materials, as well as working positions
Rotarescu: Journal of Materials Processing Technology, Vol.54 (1995), pp. 224-229
Xiao: Journal of South China University of Technology (natural science edition), Vol.35 (2007) No.3, pp.1-5.

It involves the addition of various materials to enhance the soil's strength, durability, and load-bearing capacity.
Materials & Methods 3.1 Materials Used 3.1.1 Soil The soil used in this study was collected from CRS-Renigunta and classified as CH-clay with high compressibility according to [7]IS: 1498-1970 standards as shown in Figure 1(a) .
This test is essential for evaluating the quality and composition of soil materials used in engineering applications.
The decreasing trend in Liquid Limit, Plastic Limit, and Plasticity Index with increasing stabilizer percentages indicates the effectiveness of these materials. 4.
Construction and Building Materials, 55(2), 189- 203

Their unique shapes and special patterns inspire us for the preparation of many novel cellular materials [2].
ZHANG, et al., Advances in fabrication materials of honeycomb structure films by the breath-figure method., Materials, 2013, 6(2), 460-482
In 8th International Conference on Electromagnetic Processing of Materials. 2015
Journal of magnetism and magnetic materials, 2005, 293(1): 87-92
Journal of magnetism and magnetic materials, 2006, 303(1): 39-48.

Materials Science Forum Vols. 539-543 (2007), pp. 4386-4390 [3] T.2 Kvačkaj, I.
Journal of Iron and Steel Research.
Materials Science Forum Vols. 426-432 (2003) pp. 1249-1254 [7] SETO Kazuhiro, FUNAKAWA Yoshimasa and Kaneko Shinjiro.
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science Vol.32 (2001)2, pp. 417-423 [11] Wang, Z.C., Kim, S.J., Lee, C.G.
Journal of Materials Processing Technology Vol.151 (1-3 SPEC.

Materials and Experimental Methods The material used for this study was taken from a cast of about six tons produced by Aubert & Duval using induction melting followed by vacuum arc remelting [9].
Thilly, Key Engineering Materials Vols. 651-653 (2015) pp. 38-46
Verwerft, Journal of Nuclear Materials 507 (2018) 177-187
Padmannabhan, “Effect of ageing on the microstructural stability of cold-worked titanium-modified 15Cr-15Ni—2.5Mo austenitic stainless steel “Journal of Nuclear Materials. 1992.
Mecking, Physics and phenomenology of strain hardening: the FCC case, Progress in materials science. 2003.

Study on the Evaluation Method of Engineering General Contracting Enterprises Multi-project Selection Xinhua Wu1,a, Na Tang2,b, Fengzhen Liu1,c 1Department of Resource and civil engineering, Shandong University of Science and Technology, Taian, Shandong province, 271019,China 2 Graduate School of SDUST, Shandong University of Science and Technology, Tsingtao, Shandong province, 266590,China axinhuawu@126.com, btangna2012@126.com, clfz828@126.com Keywords: Engineering General Contractor,Multi-Project Management,Evaluation Index System, Multi-Level Gray Relational Analysis.
Resource is the necessary security factors about the success of the project.When choosing project,enterprises must consider resources which can be provide for the project.In general, including human resources, material resources, and technical ability, financing ability, historical experience and these resources can be obtained effectively by the project.
Acknowledgments This study was funded by the Tai'an City Science and Technology Development Project,grant 20105007 and Shandong University of Science and Technology Spring Bud Plan,grant 2010AZZ123.
Comprehensive evaluation theory and method (Science Press, China.2005),In Chinese [8] Hung Yu,Xiaogang Wu:Journal of Business Economics, Vol.236 (6) (2011),p34-35,In Chinese [9] DaoJiang Wei:Journal of Xiangfan University, Vol.30 (5)(2009), p36,In Chinese [10] SiFeng Liu:Gray system theory and its application ( Science Press,China,2010),In Chinese [11] Dong Du, QingHua Pang:A modern comprehensive evaluation method and selected case (Tsinghua University Press,China,2005),In Chinese

Journal of Management Sciences in Chinese, 2009, 12(4):115-128
Journal of MarketingResearch, 1979(16): 64-73
Journal of Educational Psychology, 1951, 42(5): 318
Journal of Marketing Research, 1979, XVI (February): 64–73
Management Science, 40(3): 285-304.

The second, based on life cycle assessment (LCA), studies all the stages including product design, process design, development, material procurement, transport, distribution, usage, maintenance, recycling [8].
Mukherjee, “Study of fuzzy-AHP model to search the criterion in the evaluation of the best technical institutions: A case study”, International Journal of Engineering Science and Technology, Vol. 2(7), (2010), 2499-2510
Zaeri, “Project selection by using fuzzy AHP and TOPSIS technique”, World Academy of Science, Engineering and Technology Vol. 30, 333-338, (2007)
International Journal of Information and Systems sciences, 1(3-4), 406-412, (2005)
Li, “Evaluation approximation to utility function of green product”, Chinese Journal of Mechanical Engineering, Vol. 41(10), (2005).

Similarly in South Africa, an additional clause is added to the Occupational Health and Safety Act (1993) stated that the designers shall modify the design where it necessitates the use of dangerous structural, procedures or materials that brings hazards to the health and safety.
Safety Science Monitor 16(1) (2012) 2-7
Journal Construction Engineering Management 118(4) (1992) 677-684
Journal of Safety Research 39 (2008) 165-170
Journal of Safety Research 39 (2008) 175-178

The modulus of elasticity reflects the material resistance to the tensile or compress deformation. 3.
Journal of Heilongjiang Institute of Science & Technology, 2009,19(5):365-368
Development of the active balancing device for high-speed spindle system using influence coefficients[J].International Journal of Machine Tools & Manufacture, 2006(46):978-987
Journal of Sound and Vibration, 2007,304(1-2): 110-123
Enakoutsa; Center for Advanced Vehicular Systems, Mississippi State University; New applications of a generalized Hooke's law for second gradient materials[D].Mississippi State: Mississippi State University,2015:13-17.