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In Nigeria, most of the engineering and building structures are made of concrete material [5], [9].
According to International Energy Atomic Agency (IAEA), dense concrete is the most commonly used for civil engineering works [12].
Li, Advanced Concrete Technology, John Wiley & Sons, Inc., Hobo-ken, New Jersey, (2011)
Materials Science Forum 866 (2016), 78-82 [6] O.M Olofinnade, J.M Ndambuki, A.N Ede, and C.
Int J Eng Res Afr 31(2017), 77–93 [7] A.N Ede, O.M Olofinnade, E.I Ugwu, and A.O Salau, Potentials of Momordica angustisepala fiber in enhancing strengths of normal portland cement concrete Cogent Engineering 5(2018), 1431353, 1-17 [8] A.M Neville and J.

NCEER-88-0038, National Center for Earthquake Engineering Research.
Journal for Multiscale Computational Engineering, Vol. 5, n. 2, pp. 105-116, (2007)
[17] De Angelis, F., On constitutive relations in non-smooth elasto/viscoplasticity, Advanced Materials Research, Vol. 566, pp. 691-698, (2012)
[22] De Angelis, F., Computational issues in rate dependent plasticity models, Advanced Materials Research, Vol. 566, pp. 70-77, (2012)
[24] De Angelis, F., Numerical algorithms for J2 viscoplastic models, Advanced Materials Research, Vol. 567, pp. 267-274, (2012)

Numerical Determination of Sheet Metal Forming Limit Based on a New Combined Model of M-K Theory and Shear Localization Criterion LC Chan 1, a 1 Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China amflcchan@inet.polyu.edu.hk Keywords: Forming Limit Diagram; Sheet metal forming; 6016-T4 Aluminum alloy Abstract.
Discussion and Conclusions In this work, several FLD prediction models were studied by using the advanced yield function, Yld2000-2d, and two isotropic hardening models to predict the FLC of AA6016-T4 Aluminum alloy sheet.
Butuc, A.B. da Rocha, et al.: Advanced Materials Forum l.

Introduction Bulk metallic glasses (BMGs) are attracting increasing attention due to their scientific and engineering significance.
Acknowledgements This work was supported by a Grant-In-Aid for Science Research in a priority Area "Research and Development Project on Advanced Metallic Glasses, Inorganic Materials, and Joining Technology" and Grant-In-Aid No. 18070001 (2006-2010) from the Ministry of Education, Science, Sports and Culture, Japan.
A part of this work was carried out at Advanced Research Center of Metallic Glasses, Institute for Materials Research, Tohoku University, Japan.
Forum 308-311 (1999), p. 83

Introduction Rapid development of industry especially aero-engines and power engineering requires hightemperature materials such as Ni-base superalloys to be used at higher service temperatures.
For higher thermal efficiency and environmental protection the development of advanced fossil power plants require higher steam temperatures.
Fig. 3 Grain boundary phase precipitation behaviour changes with the variation of Al, Ti and Nb (a)Alloy A: conventional 718 alloy (b)Alloy C: 718 type alloy with 1.25%Al, 1%Ti and 5.15%Nb Fig. 4 Typical micro-structure of a modified 718 Alloy C after long time aging In result of our research work [4] the chemical composition of advanced modified 718 alloy (5055%Ni, 17-21%Cr, 2.8-3.3%Mo, 5.2-5.5%Nb, 0.8-1.3%Al,0.7-1.15%Ti, 0-1%W,0.012-0.015%P, 0.005-0.01%B and Fe in balance) has been suggested for further development and is planning to be used at the temperature range of 680-700℃.
Fu: High Temperature Structure Stability Study on NbContaining Nickel-Base Superalloys, Mater Sci Forum Vol.546-549 (2005), p.1281

Fakirov Centre for Advanced Composite Materials, Department of Mechanical Engineering The University of Auckland, Private bag 92019, Auckland, New Zealand rj.lin@auckland.ac.nz, d.bhattacharyya@auckland.ac.nz, s.fakirov@auckland.ac.nz Keywords: Polymer blends; Microfibril reinforced composites; Rotational moulding; Morphology Abstract.
However, the modest mechanical properties of these materials prevent the rotomoulded products from being considered in advanced applications.
Forum 437-438 (2003), p. 235

Friction Stir Forming of Aluminum Alloy Gear-Racks Takahiro Ohashi1, a *, Jiazhao Chen1, b, Tadashi Nishihara1, c, and Hamed Mofidi Tabatabaei1, d 1School of Science and Engineering, Kokushikan University, 4-28-1 Setagaya, Setagaya-ku, Tokyo, Japan atohashi@kokushikan.ac.jp, b edlkj2@gmail.com, cnisihara@kokushikan.ac.jp, d s1de004q@kokushikan.ac.jp Keywords: friction-stir forming, gear rack, net-shape forming Abstract.
In addition, the height of the formed tooth at the retreating side tends to be greater than at the advancing side.
Advancing side Retreating side.
Advancing side 2mm (b) Cross-section on normal plane.
Nishihara, Development of Friction Stir Forming, Materials Science Forum, 426-432(2003) 2971-2978

The width of diffusion layer at 1323K is about 2.5 times the one at 1023K. 2) The widths of simulation diffusion layer are similar to the test data under 1023K/30MPa/7200s, 1023K/40MPa/7200s, 1023K/50MPa/7200s and 1023K/60MPa/7200s, and the relationship between the width of diffusion layer of Be and Fe (x/μm) and the diffusion pressure (p/MPa) is the following equation . 0≤ p≤60 MPa 3) The simulation curve between the width of diffusion layer of Be and Fe (x/μm) and the holding time (t/s) is following equation under 1023K/7200s. 0≤ t≤7200s References [1] Xu Di, Ling Xiang: Materials Science Forum Vol.575-578(2008), p.666
[5] Song Minxia, Zhao He: Advanced Materials Research Vol. 472-475 (2012), p.1197
[6] Liu Shuying, Xu Kuan, Liu Guangbao, Cao Congcong, Heng, Zhonghao: Reviews on Advanced Materials Science Vol.33(2013), p.224
,Chen S.L: Science and Technology of Welding and Joining Vol.18(2013), p.451 [8] Liao Zongbo, Guo Weimin, Zhao Minghan: Journal of Mechanical Engineering Vol. 49 (2013), p.170, In Chinese.

It is reported that they are promising candidates for advanced brake system [1-3].
For example, C/C-SiC brake composites fabricated by Central South University for engineering machine and high-speed train have succeed tested in laboratory, and the ceramic brake disk is mounted on a metallic mat and can resist a maximum application temperature of about 800℃.
C/C-SiC brake composites fabricated by WCISR have succeeded applied on magnetic levitation vehicle, high-speed train, advanced car and so on.
Ceram. forum inter., 1999, 76(4): 30-35

Zulafif Rahim 1, d, Milan Brandt1,e , and John Mo 1,f 1 School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, Bundoora, Victoria, 3085, Australia a email: s3406249@student.rmit.edu.au, bemail: s3198727@student.rmit.edu.au, cemail: songlin.ding@rmit.edu.au, demail: mohammadzulafif.rahim@rmit.edu.au, e email: milan.brandt@rmit.edu.au, f email: john.mo@rmit.edu.au Keywords: Electrical discharge grinding, electrode wheel speed, polycrystalline diamond, discharge process.
Acknowledgements This research was supported by the Advanced Manufacturing Corporate Research Centre under the Australian Governments Cooperative Research Centre's Program as Project No. 2.2.1.
Hoseinnezhad, R.Webb: Advanced Material Research, Vol. 633 (2013), p. 36
Forum Vol. 471-472 (2004), p. 457.