Experimental Investigation of the Tribological Behaviors of Carbon Fiber Reinforced Polymer Composites under Boundary Lubrication
Friction and wear experiments were performed on carbon fiber-reinforced polymer (CFRP) composites, and the tribological behavior of these materials under boundary lubrication (based on the 5100 4T 10 W-30 engine oil with TiO<sub>2</sub> Degussa P25 nanoparticles) was investigated. Experi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/18/3716 |
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| author | Corina Birleanu Marius Pustan Grigore Pop Mircea Cioaza Florin Popa Lucian Lazarescu Glad Contiu |
| author_facet | Corina Birleanu Marius Pustan Grigore Pop Mircea Cioaza Florin Popa Lucian Lazarescu Glad Contiu |
| author_sort | Corina Birleanu |
| collection | DOAJ |
| description | Friction and wear experiments were performed on carbon fiber-reinforced polymer (CFRP) composites, and the tribological behavior of these materials under boundary lubrication (based on the 5100 4T 10 W-30 engine oil with TiO<sub>2</sub> Degussa P25 nanoparticles) was investigated. Experiments were carried out in two directions: one at a different normal load from 6 to 16 N and one at a low sliding speed of 110 mm/min under boundary lubrication conditions. The obtained results reveal the stick-slip effect and the static and dynamic coefficient of friction decreased slightly with increasing normal applied load on the carbon fiber reinforced polymer composite pairs. The second direction highlights through experimental tests on the pin on disc tribometer that the friction coefficient increases with the increase in normal load (20–80 N) and sliding velocity (0.4–2.4 m/s). On the other hand, it is found that the friction coefficient is slightly lower than in the stick-slip phase. During the running-in process, the friction coefficient of the CFRP pair increases steadily as the rubbing time increases, and after a certain rubbing period, it remains constant regardless of the material of the counter face. The obtained results show that for the observed interval, the influence of normal load and sliding velocity have relatively small fraction coefficients and low wear depths. A 3D analysis of the profile demonstrated the texture of wear marks and tracks of these engineering composite materials. Furthermore, the height variations of wear marks and the morphologies of the worn surfaces of specimens under boundary lubrication conditions were analyzed. |
| first_indexed | 2024-03-09T22:46:51Z |
| format | Article |
| id | doaj.art-cd2001ebcd904d43b7e41a9083bae862 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T22:46:51Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-cd2001ebcd904d43b7e41a9083bae8622023-11-23T18:28:33ZengMDPI AGPolymers2073-43602022-09-011418371610.3390/polym14183716Experimental Investigation of the Tribological Behaviors of Carbon Fiber Reinforced Polymer Composites under Boundary LubricationCorina Birleanu0Marius Pustan1Grigore Pop2Mircea Cioaza3Florin Popa4Lucian Lazarescu5Glad Contiu6MicroNano Systems Laboratory, Technical University of Cluj-Napoca, Blv. Muncii Nr. 103–105, 400641 Cluj-Napoca, RomaniaMicroNano Systems Laboratory, Technical University of Cluj-Napoca, Blv. Muncii Nr. 103–105, 400641 Cluj-Napoca, RomaniaDepartment of Design Engineering and Robotics, Technical University of Cluj-Napoca, 400641 Cluj-Napoca, RomaniaMicroNano Systems Laboratory, Technical University of Cluj-Napoca, Blv. Muncii Nr. 103–105, 400641 Cluj-Napoca, RomaniaDepartment of Materials Science and Engineering, Technical University of Cluj-Napoca, 400641 Cluj-Napoca, RomaniaDepartment of Manufacturing Engineering, Technical University from Cluj-Napoca, 400641 Cluj-Napoca, RomaniaDepartment of Manufacturing Engineering, Technical University from Cluj-Napoca, 400641 Cluj-Napoca, RomaniaFriction and wear experiments were performed on carbon fiber-reinforced polymer (CFRP) composites, and the tribological behavior of these materials under boundary lubrication (based on the 5100 4T 10 W-30 engine oil with TiO<sub>2</sub> Degussa P25 nanoparticles) was investigated. Experiments were carried out in two directions: one at a different normal load from 6 to 16 N and one at a low sliding speed of 110 mm/min under boundary lubrication conditions. The obtained results reveal the stick-slip effect and the static and dynamic coefficient of friction decreased slightly with increasing normal applied load on the carbon fiber reinforced polymer composite pairs. The second direction highlights through experimental tests on the pin on disc tribometer that the friction coefficient increases with the increase in normal load (20–80 N) and sliding velocity (0.4–2.4 m/s). On the other hand, it is found that the friction coefficient is slightly lower than in the stick-slip phase. During the running-in process, the friction coefficient of the CFRP pair increases steadily as the rubbing time increases, and after a certain rubbing period, it remains constant regardless of the material of the counter face. The obtained results show that for the observed interval, the influence of normal load and sliding velocity have relatively small fraction coefficients and low wear depths. A 3D analysis of the profile demonstrated the texture of wear marks and tracks of these engineering composite materials. Furthermore, the height variations of wear marks and the morphologies of the worn surfaces of specimens under boundary lubrication conditions were analyzed.https://www.mdpi.com/2073-4360/14/18/3716composite materialtribology propertiesboundary lubricationstick-slipfrictionwear |
| spellingShingle | Corina Birleanu Marius Pustan Grigore Pop Mircea Cioaza Florin Popa Lucian Lazarescu Glad Contiu Experimental Investigation of the Tribological Behaviors of Carbon Fiber Reinforced Polymer Composites under Boundary Lubrication Polymers composite material tribology properties boundary lubrication stick-slip friction wear |
| title | Experimental Investigation of the Tribological Behaviors of Carbon Fiber Reinforced Polymer Composites under Boundary Lubrication |
| title_full | Experimental Investigation of the Tribological Behaviors of Carbon Fiber Reinforced Polymer Composites under Boundary Lubrication |
| title_fullStr | Experimental Investigation of the Tribological Behaviors of Carbon Fiber Reinforced Polymer Composites under Boundary Lubrication |
| title_full_unstemmed | Experimental Investigation of the Tribological Behaviors of Carbon Fiber Reinforced Polymer Composites under Boundary Lubrication |
| title_short | Experimental Investigation of the Tribological Behaviors of Carbon Fiber Reinforced Polymer Composites under Boundary Lubrication |
| title_sort | experimental investigation of the tribological behaviors of carbon fiber reinforced polymer composites under boundary lubrication |
| topic | composite material tribology properties boundary lubrication stick-slip friction wear |
| url | https://www.mdpi.com/2073-4360/14/18/3716 |
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