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Injection molding process is well known for producing complex shape plastic components, manufacturing close dimensional tolerance and automatic production. In the reports, the process was used for producing short glass fiber reinforced thermoplastic composites. A range of composites formulation was injection molded to optimize fiber contents. One of formulations was the result of the experimental work. The others were the discussion ofthe result obtained. Molded specimens were tested mechanically and it was found that elongation, tensile strength and modulus were dependent on fiber weight fraction in the composite. An increase of fiber content in samples willincreased the tensile strength and modulus of the samples. However, increasing fiber content will decrease the elongation value of the samples. An impact test was done as well and it was found that the impact energy was dependent on fiber content and notching condition. For notchedcondition, it was found that increase fiber content in the samples will increase theimpact energy for the samples. Molding defects of the samples were identified using x-ray radiography and microscopy. For x-ray radiography, results show no evidence of micro voids and surface defects. But, for microscopy test, it was found that the surface of the molded specimens contain surface flaws. Furthermore, it was initiated that from microscopy test held, there were dimples and voids in the internal specimens.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Materials - Engineering materials - Metals alloys - Phase transformation
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Users 2053 not found.
Date Deposited: 30 Sep 2013 16:55
Last Modified: 25 Jan 2017 09:46
URI: http://utpedia.utp.edu.my/id/eprint/7926

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