dc.contributor.author | Wang, Yuan | |
dc.contributor.author | Rouholamin, D | |
dc.contributor.author | Davies, R | |
dc.contributor.author | Ghita, O. | |
dc.date.accessioned | 2016-01-04T14:46:25Z | |
dc.date.issued | 2015-09-24 | |
dc.description.abstract | The properties of graphite platelet reinforced Poly Ether Ether Ketone (PEEK/GP) composites from powder to laser sintered parts were investigated in this study. The flowability, particle size and laser absorption characteristics of PEEK/GP powders with various graphite loadings were studied. It was found that the addition of graphite improved laser absorption; however, the flowability of powder was reduced. Micro-CT scanning was used to study the distribution, dispersion and the orientation of graphite platelets as well as the porosity and maximum pore size of laser sintered PEEK/GP composites. The graphite platelets were observed to be distributed evenly in the structure without significant agglomeration. Most of the graphite had their in-plane surface orientated in the X-Y plane of fabrication, which increased the tensile strength of the composites incorporating 5. wt.% graphite. The investigation also demonstrated that the porosity and maximum pore size increased with increasing amounts of graphite. A significant increase in porosity and pore size was found in PEEK/GP composites with 7.5. wt.% graphite, and it is believed to be responsible for the drop in tensile strength. DMA analysis showed no reduction of the damping properties in the composites incorporating up to 5. wt.% graphite, whereas the composites with 7.5. wt.% graphite showed increased stiffness. | en_GB |
dc.identifier.citation | Vol. 88, pp. 1310 - 1320 | en_GB |
dc.identifier.doi | 10.1016/j.matdes.2015.09.094 | |
dc.identifier.other | S0264127515305037 | |
dc.identifier.uri | http://hdl.handle.net/10871/19105 | |
dc.language.iso | en | en_GB |
dc.publisher | Elsevier | en_GB |
dc.rights.embargoreason | Publisher Policy | en_GB |
dc.rights | CC-BY-NC-ND licence applies. | en_GB |
dc.subject | Composites | en_GB |
dc.subject | Laser sintering | en_GB |
dc.subject | Micro-CT | en_GB |
dc.subject | Microstructure characterization | en_GB |
dc.subject | PEEK | en_GB |
dc.subject | Thermomechanical properties | en_GB |
dc.title | Powder characteristics, microstructure and properties of graphite platelet reinforced Poly Ether Ether Ketone composites in High Temperature Laser Sintering (HT-LS) | en_GB |
dc.type | Article | en_GB |
dc.identifier.issn | 0264-1275 | |
dc.description | This is the author's accepted manuscript. The final published article is avilable from the publisher via DOI: 10.1016/j.matdes.2015.09.094 | en_GB |
dc.description | Copyright © 2015 Elsevier Ltd. All rights reserved. | en_GB |
dc.identifier.journal | Materials & Design | en_GB |