Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Department of Mechanical Engineering | en_US |
| dc.creator | Chan, Tak-wing | - |
| dc.identifier.uri | https://theses.lib.polyu.edu.hk/handle/200/71 | - |
| dc.language | English | en_US |
| dc.publisher | Hong Kong Polytechnic University | - |
| dc.rights | All rights reserved | en_US |
| dc.title | Wire electrical discharge machining of aluminium-based metal matrix composite materials | en_US |
| dcterms.abstract | Particulate and fibre reinforced metal matrix composites exhibit higher strength-to-weight ratio and specific modulus than unreinforced aluminium alloys. However, the machining problem of these materials limited the use of composites in automobile, marine, chemical, precision engineering and transportation industries. Wire electrical discharge machining ( W-EDM ) is considered as an attractive way of non-conventional machining for the aluminium-based MMC materials. In this dissertation, linear cuts of particulate and fibre reinforced composite materials were conducted by W-EDM under different operating conditions. Unreinforced aluminium alloys were also taken for comparison purpose. The result shows that unreinforced 6061 aluminium alloy has the higher material removal rate than the particulate and fibre reinforced composite materials while coarse alumina particulate reinforced composite has the highest machining speed among the composite materials. The stability of machining operation relys on the setting of the process parameters and properties of materials. Metallographic examination of the machined surfaces reveals that the surface roughnesses are much worse in rough machining and for materials with large size of reinforcement phases. In addition, the W-EDM of MMC materials leads to the formation of craters and the removal mechanisms of the ceramic reinforcement phases are established. | en_US |
| dcterms.extent | viii, 78 leaves : ill. ; 30 cm | en_US |
| dcterms.isPartOf | PolyU Electronic Theses | en_US |
| dcterms.issued | 1995 | en_US |
| dcterms.educationalLevel | All Master | en_US |
| dcterms.educationalLevel | M.Sc. | en_US |
| dcterms.LCSH | Metallic composites | en_US |
| dcterms.LCSH | Aluminum | en_US |
| dcterms.LCSH | Electric metal-cutting | en_US |
| dcterms.LCSH | Hong Kong Polytechnic University -- Dissertations | en_US |
| dcterms.accessRights | restricted access | en_US |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b12197968.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 4.82 MB | Adobe PDF | View/Open |
Copyright Undertaking
As a bona fide Library user, I declare that:
- I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
- I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
- I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.
Please use this identifier to cite or link to this item:
https://theses.lib.polyu.edu.hk/handle/200/71