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Friction Stir Welding of High Density Polyethylene

Ismail, Mohammad Afiq Syazwan (2011) Friction Stir Welding of High Density Polyethylene. Universiti Teknologi PETRONAS. (Unpublished)

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In this report, the progress attained in the Friction Stir Welding (FSW) on polymer project is depicted, evaluated, and discussed. FSW is a derivative of friction welding which uses a solid state joining process relying on the conversion of frictional energy into thermal energy to melt the joint. Two rotational speeds of 1300 rpm and 1400 rpm were used. Other parameters were transverse speed of 10 mm/min, dwell time of 40 seconds, plunge depth ofl.8 mm, and plunge rate of8 mm/min were kept constant throughout the project. The effects of FSW on high density polyethylene (HDPE) were investigated in terms of their tensile and flexural strengths. Due to very limited studies on FSW techniques on polymeric materials, this project focused on HDPE. The project started with the construction of proper FSW equipment such as tooling and clamping device which involved designing and machining. The preliminary experiments were conducted with several rotation speeds and transverse rates while other parameters were held constant. Based on the preliminary results, the transverse rate was kept constant at 10 mmlmin in the finalized experiments. Tensile and flexural tests were conducted. While the visual welded specimens showed a promising result, the best tensile strength was 8.9% compared to the original material. Meanwhile, flexural test was failed due to the root defect. The condition and location of the welded part examined using optical microscope.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Manufacturing - Welding - Metal welding
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Users 2053 not found.
Date Deposited: 12 Nov 2013 14:59
Last Modified: 25 Jan 2017 09:42
URI: http://utpedia.utp.edu.my/id/eprint/10482

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