Please use this identifier to cite or link to this item:
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72705
Title: | Warpage minimisation on side arm using response surface methodology (RSM) |
Authors: | Mohd Fathullah, Ghazali |
Keywords: | Molding (Chemical technology) Injection molding of rubber Catheters Urinary catheterization Injection molding Catheter Manufacturing Process |
Publisher: | Universiti Malaysia Perlis (UniMAP) |
Abstract: | Catheter manufacturing process requires the use of mould called side arm through latex dipping process. Manufacturing process of a nylon PA66 - side arm via an injection moulding often leads to undesirable warpage. This research tends to determine the optimum processing parameters that can be used for manufacturing side arms in minimizing the warpage issues. The considered processing parameters were packing pressure, packing time, cooling time, mould temperature and melt temperature. Apart from that, this research also tries to find the most significant factor affecting the warpage. The side arm model was developed via computer aided drafting (CAD) software and the whole analyses on the warpage was executed via a simulation software while the parameters concerned were optimised through response surface methodology. As a result, the optimised parameter settings are 76.57 MPa, 0.60 s, 8.30 s, 34.45 °C and 275.00 °C acquired for packing pressure, packing time, cooling time, mould temperature and melt temperature respectively. On top of that, cooling time has been found to be the most influential parameter affecting the warpage with contribution factor of 4.01 % compared to others. The warpage based on parameter settings recommended by the simulation software has also been compared with that after the optimisation. It can be concluded that the warpage after optimisation is 22.8 % reduced compared to the original recommended setting. |
Description: | Master of Science in Manufacturing Systems Engineering |
URI: | http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72705 |
Appears in Collections: | School of Manufacturing Engineering (Theses) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Page 1-24.pdf | Access is limited to UniMAP community. | 452.13 kB | Adobe PDF | View/Open |
Full text.pdf | This item is protected by original copyright. | 1.89 MB | Adobe PDF | View/Open |
Shazzuan.pdf | Declaration Form | 262.33 kB | Adobe PDF | View/Open |
Items in UniMAP Library Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.