| DOI | Resolve DOI: https://doi.org/10.4050/JAHS.60.011005 |
|---|
| Author | Search for: LeBlanc, D.; Search for: Landry, B.; Search for: Levy, A.; Search for: Hubert, P.; Search for: Roy, S.1; Search for: Yousefpour, A.1; Search for: Quinlan, E. |
|---|
| Affiliation | - National Research Council of Canada
|
|---|
| Format | Text, Article |
|---|
| Subject | Compression molding; Filling; Ketones; Mechanical properties; Mechanical testing; Molds; Tensile strength; Complex parts; Component levels; Fast Processing; Fatigue performance; Filling pressures; Mechanical performance; Processing condition; Thermoplastic composite; Processing |
|---|
| Abstract | Compression molding of randomly oriented strands (ROS) composites offers the possibility to manufacture complex parts with a fast processing cycle. In this paper, effects of pressure, strand size, temperature, and material placement in the mold cavity on the quality of a T-shape part were studied experimentally with carbon/polyether ether ketone ROS composites. Minimum filling pressure was obtained for the consolidation of a 25-mm deep cavity. Parts processed at filling pressure showed a void content no greater than 1.2%. Increasing pressure to 70 bar resulted in decreased void content as low as 0.03%. Mechanical testing of the T-shape showed similar strengths for parts processed at filling pressure and higher (70 bar). At the component level, initial strand placement greatly affected mechanical performance as the presence of a knit line was responsible for a reduction of 60% in tensile strength. The main findings show that processing a complex feature at filling pressure Pfill was sufficient to reach nominal mechanical properties. This suggested that moderate porosity was not detrimental to the mechanical performance for the given tests where fatigue performance was not evaluated. © 2015 The American Helicopter Society. |
|---|
| Publication date | 2015 |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| NPARC number | 21275635 |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | 7246d29a-9f22-41a1-8a58-db65b704f3f0 |
|---|
| Record created | 2015-07-14 |
|---|
| Record modified | 2020-04-22 |
|---|
