American Journal of Materials Science and Engineering

ISSN (Print): 2333-4665

ISSN (Online): 2333-4673

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Website: http://www.sciepub.com/journal/AJMSE

   

Article

Progressive Failure Analysis and Failure Map into Plain Weave Glass Fibre Reinforced Polymer Bolted Joint

1Technical Engineering College-Baghdad, Middle Technical University, Baghdad, Iraq


American Journal of Materials Science and Engineering. 2015, 3(2), 21-28
doi: 10.12691/ajmse-3-2-1
Copyright © 2015 Science and Education Publishing

Cite this paper:
Khudhayer J. Jadee. Progressive Failure Analysis and Failure Map into Plain Weave Glass Fibre Reinforced Polymer Bolted Joint. American Journal of Materials Science and Engineering. 2015; 3(2):21-28. doi: 10.12691/ajmse-3-2-1.

Correspondence to: Khudhayer  J. Jadee, Technical Engineering College-Baghdad, Middle Technical University, Baghdad, Iraq. Email: khudhayer1970@yahoo.com

Abstract

The performance of the glass fibre reinforced polymer (GFRP) composite bolted joint has been investigated using experimental and finite element methods. The glass fibre reinforcement was plain weave fabric of 800g/m2 weight. The investigation has been carried out on a double-lap composite bolted joint with many geometric parameters. Progressive failure analysis has been conducted using Hashin failure criteria to determine the failure load, failure mode and bearing strength. Failure map has been also defined with respect to the geometric parameters.

Keywords

References

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Article

Maleic Anhydride-graft-polyethylene Compatibilizer Effect on the Properties of Chrysophyllum Albidum Seed Powder Filled High Density Polyethylene

1Department of Polymer and Textile Engineering, Nnamdi Azikiwe University, Awka, Awka, Nigeria

2Department of Polymer and Textile Engineering, Federal University of Technology Owerri, P.M.B. 1526, Owerri, Nigeria

3Scientific Equipment Development Institute, Enugu, Nigeria


American Journal of Materials Science and Engineering. 2015, 3(2), 29-36
doi: 10.12691/ajmse-3-2-2
Copyright © 2015 Science and Education Publishing

Cite this paper:
Iheoma C. Chukwujike, Chinomso M. Ewulonu, Nwanonenyi S. C, Uche I. C.. Maleic Anhydride-graft-polyethylene Compatibilizer Effect on the Properties of Chrysophyllum Albidum Seed Powder Filled High Density Polyethylene. American Journal of Materials Science and Engineering. 2015; 3(2):29-36. doi: 10.12691/ajmse-3-2-2.

Correspondence to: Iheoma  C. Chukwujike, Department of Polymer and Textile Engineering, Nnamdi Azikiwe University, Awka, Awka, Nigeria. Email: ic.chukwujike@unizik.edu.com

Abstract

Enhancement of chrysophyllum albidum seed powder (CASP) filled high density polyethylene (HDPE) using maleic anhydride - graft – polyethylene (MAPE) as a compatibilizer has been carried out. Using chrysophyllum albidum seed powder filler sieved to two particle sizes of 0.075 and 0.30μm and 0 to 30 wt %, high density polyethylene (HDPE) composites were prepared using an injection moulding machine. The mechanical properties; tensile strength, elongation at break, modulus of elasticity, and yield strength of the composites were determined using international accepted standard technigues. The mechanical properties decreased with increased filler (CASP) contents, and decrease in filler particle size. The addition of maleic anhydride graft polyethylene (MAPE) to the filler materials was found to improve the mechanical properties of HDPE composites. The specific gravity of high density polyethylene was greatly improved (>99 %) at high CASP particle size of 0.075µm. The hardness of HDPE composites was improved on addition of CASP filler. The addition of MAPE also improved the specific gravity of HDPE composites. The water absorption (24hrs) of the composites was found to increase with increased CASP content. The two particle sizes of the CASP investigated exhibited similar response to water absorption property. Generally the flame retardancy of the composites was found to increase with increased CASP content. Addition of MAPE to the composites was found to significantly improve the water absorption, and flame retardency even at low MAPE content of 0.035 wt. %. The addition of MAPE to high density polyethylene has highlighted the usefullness of chrysophyllum albidum seed powder as filler material in the plastic composite/industry.

Keywords

References

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Article

Experimental Investigation of the Effect of Emulsifier Concentration on the Properties of Olechemical Oil Based Cutting Fluid

1Department of Mechanical Engineering, Federal University of Technology, Minna, Nigeria

2Department of Mechanical Engineering, University of Abuja, Nigeria

3Pure and Applied Physics Department, Federal University Wukari, Nigeria


American Journal of Materials Science and Engineering. 2015, 3(2), 37-41
doi: 10.12691/ajmse-3-2-3
Copyright © 2015 Science and Education Publishing

Cite this paper:
Lawal S.A, Ugheoke B.I, Woma T.Y, Amodu E.A, Olatunji K.O, Yusuf A.O, Yahaya J. Experimental Investigation of the Effect of Emulsifier Concentration on the Properties of Olechemical Oil Based Cutting Fluid. American Journal of Materials Science and Engineering. 2015; 3(2):37-41. doi: 10.12691/ajmse-3-2-3.

Correspondence to: Lawal  S.A, Department of Mechanical Engineering, Federal University of Technology, Minna, Nigeria. Email: lawalsunday@futminna.edu.ng

Abstract

Experimental investigation of the effect of emulsifier concentration on the properties of olechemical-oil -based cutting fluid was studied. It was observed that as the emulsifier concentration increases from 2% to 8%, the kinematic viscosity increased. However, for emulsifier concentration of 10%, the kinematic viscosity started decreasing for all the temperature range used, although an increase was observed with increase in temperature. On the other hand, other properties such as thermal conductivity, pH value, flash and fire points increased as the concentration of the emulsifier was raised. However, microbial growth decreased as the pH value increased.

Keywords

References

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