Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Impact strength

The Effect of Nanoparticles Additives on Impact Strength of Metal Matrix Composites

N.J. Abdul kader; R.H. Mohammed; M.M. Hanoos

Engineering and Technology Journal, 2017, Volume 35, Issue 1, Pages 37-40

The impact strength of Al6061/SiC metal matrix composites reinforced with nanoparticles of weight percentage (3%, 6%, 9% & 12%) was studied. The composites were fabricated using liquid metallurgy technique. The results revealed that the Al6061/SiC metal matrix composites exhibited better hardness and impact strength than the Al 6061 alloy. Such improvement in the mechanical properties was observed with increasing the weight percentage of SiC nanoparticles and this increase both the hardness and impact strengths of the composites. The impact strength of 12 wt% nano SiCp aluminum composites showed the maximum strength. The effect of the nanoparticles was acted as barriers to dislocation motion. It is seen that the impact energy of the composites increase gradually with filler content increasing from 3 to 12 wt%. SEM were carried out to identify the uniform distribution of nanoparticles in composites.

The Effect of Waste Ceramic Materials ( Iraqi Stones Dust Powders ) on The Mechanical Properties of Epoxy Resin

Fadhil A.Chyad

Engineering and Technology Journal, 2011, Volume 29, Issue 16, Pages 3302-3312

Using waste materials, which have a high pollution on the environment, as an improvement to the properties of a weaken material such epoxy resin become a good achievement. Iraqi stones dust powders have been used to improve the mechanical properties of epoxy resin. Impact strength and fracture toughness from impact test, Young`s modulus from tensile test, Shore hardness, fracture toughness and thermal
conductivity have been investigated. The percentages of the ceramic powders have affected all the above properties and increased the values of them about twice. The highest values were at 12% and then decreased. Also the particle size of this powders has affected these properties, where the lowest particle size (25ìm) has the best values.

Study Some of Mechanical Properties and Effects of Immersion in Solution of (Epoxy /Unsaturated Polyester) Blend Which Reinforced with Glass Fiber

Engineering and Technology Journal, 2011, Volume 29, Issue 10, Pages 464-473

In this research, polymer blend was prepared from Epoxy resin and unsaturated polyester resin as matrix material (EP/UPE) with weight ratio (90/10) %. E-glass fibers type (woven roven) was used as a reinforcement material with volume fraction for fibers (Vf =30 %) by using hand lay-up method. Some mechanical properties were studied on the specimens of the above mentioned materials and then the results of the blend (EP/UPE) compared with its composite which was reinforced with glass fibers. The samples were immersed in (H2SO4) and (NaOH) solutions with normality (0.1 N) at room temperature for (7,
14, 21, 28) days. The effects of the immersion were noticed on the hardness and impact strength values. It was found that the reinforcement with glass fiber leads to the increasing of both impact strength and shore hardness of the composite before the
immersion. The effects of immersion showed decreasing of hardness values after immersion samples in to both above solutions while the results of impact strength showed an increasing after the immersion in to the acidic solution and decreasing of the pure blend and its composite after the immersion in to the basic solution.