Mechanical Properties Assessment of Low-Content Capsule-Based Self-Healing Structural Composites
Microcapsule-based carbon fiber reinforced composites were manufactured by wet layup, in order to assess their mechanical properties and determine their healing efficiency. Microcapsules at 10%wt. containing bisphenol-A epoxy, encapsulated in a urea formaldehyde (UF) shell, were employed with Scandi...
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MDPI AG
2020-08-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/17/5739 |
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| author | Xenia Tsilimigkra Dimitrios Bekas Maria Kosarli Stavros Tsantzalis Alkiviadis Paipetis Vassilis Kostopoulos |
| author_facet | Xenia Tsilimigkra Dimitrios Bekas Maria Kosarli Stavros Tsantzalis Alkiviadis Paipetis Vassilis Kostopoulos |
| author_sort | Xenia Tsilimigkra |
| collection | DOAJ |
| description | Microcapsule-based carbon fiber reinforced composites were manufactured by wet layup, in order to assess their mechanical properties and determine their healing efficiency. Microcapsules at 10%wt. containing bisphenol-A epoxy, encapsulated in a urea formaldehyde (UF) shell, were employed with Scandium (III) Triflate (Sc (OTf)3) as the catalyst. The investigation was deployed with two main directions. The first monitored changes to the mechanical performance due to the presence of the healing agent within the composite. More precisely, a minor decrease in interlaminar fracture toughness (G<sub>IIC</sub>) (−14%), flexural strength (−12%) and modulus (−4%) compared to the reference material was reported. The second direction evaluated the healing efficiency. The experimental results showed significant recovery in fracture toughness up to 84% after the healing process, while flexural strength and modulus healing rates reached up to 14% and 23%, respectively. The Acoustic Emission technique was used to support the experimental results by the onsite monitoring. |
| first_indexed | 2024-03-10T17:12:12Z |
| format | Article |
| id | doaj.art-8c919c1307274df5b3b974ccd06949d7 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T17:12:12Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-8c919c1307274df5b3b974ccd06949d72023-11-20T10:38:09ZengMDPI AGApplied Sciences2076-34172020-08-011017573910.3390/app10175739Mechanical Properties Assessment of Low-Content Capsule-Based Self-Healing Structural CompositesXenia Tsilimigkra0Dimitrios Bekas1Maria Kosarli2Stavros Tsantzalis3Alkiviadis Paipetis4Vassilis Kostopoulos5Department of Mechanical Engineering & Aeronautics, University of Patras, Patras University Campus, GR 26500 Patras, GreeceDepartment of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, GreeceDepartment of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, GreeceDepartment of Mechanical Engineering & Aeronautics, University of Patras, Patras University Campus, GR 26500 Patras, GreeceDepartment of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, GreeceDepartment of Mechanical Engineering & Aeronautics, University of Patras, Patras University Campus, GR 26500 Patras, GreeceMicrocapsule-based carbon fiber reinforced composites were manufactured by wet layup, in order to assess their mechanical properties and determine their healing efficiency. Microcapsules at 10%wt. containing bisphenol-A epoxy, encapsulated in a urea formaldehyde (UF) shell, were employed with Scandium (III) Triflate (Sc (OTf)3) as the catalyst. The investigation was deployed with two main directions. The first monitored changes to the mechanical performance due to the presence of the healing agent within the composite. More precisely, a minor decrease in interlaminar fracture toughness (G<sub>IIC</sub>) (−14%), flexural strength (−12%) and modulus (−4%) compared to the reference material was reported. The second direction evaluated the healing efficiency. The experimental results showed significant recovery in fracture toughness up to 84% after the healing process, while flexural strength and modulus healing rates reached up to 14% and 23%, respectively. The Acoustic Emission technique was used to support the experimental results by the onsite monitoring.https://www.mdpi.com/2076-3417/10/17/5739self-healingcapsule based compositesmechanical properties |
| spellingShingle | Xenia Tsilimigkra Dimitrios Bekas Maria Kosarli Stavros Tsantzalis Alkiviadis Paipetis Vassilis Kostopoulos Mechanical Properties Assessment of Low-Content Capsule-Based Self-Healing Structural Composites Applied Sciences self-healing capsule based composites mechanical properties |
| title | Mechanical Properties Assessment of Low-Content Capsule-Based Self-Healing Structural Composites |
| title_full | Mechanical Properties Assessment of Low-Content Capsule-Based Self-Healing Structural Composites |
| title_fullStr | Mechanical Properties Assessment of Low-Content Capsule-Based Self-Healing Structural Composites |
| title_full_unstemmed | Mechanical Properties Assessment of Low-Content Capsule-Based Self-Healing Structural Composites |
| title_short | Mechanical Properties Assessment of Low-Content Capsule-Based Self-Healing Structural Composites |
| title_sort | mechanical properties assessment of low content capsule based self healing structural composites |
| topic | self-healing capsule based composites mechanical properties |
| url | https://www.mdpi.com/2076-3417/10/17/5739 |
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