Multifunctional characteristics of 3D printed polymer nanocomposites under monotonic and cyclic compression
This study presents the multifunctional characteristics of multi-walled carbon nanotube (MWCNT)/polypropylene random copolymer (PPR) composites enabled via fused filament fabrication (FFF) under monotonic and quasi-static cyclic compression. Utilizing in-house MWCNT-engineered PPR filament feedstock...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-12-01
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| Series: | Defence Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S221491472300140X |
| _version_ | 1797391822873427968 |
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| author | Pawan Verma Jabir Ubaid Fahad Alam Suleyman Deveci S. Kumar |
| author_facet | Pawan Verma Jabir Ubaid Fahad Alam Suleyman Deveci S. Kumar |
| author_sort | Pawan Verma |
| collection | DOAJ |
| description | This study presents the multifunctional characteristics of multi-walled carbon nanotube (MWCNT)/polypropylene random copolymer (PPR) composites enabled via fused filament fabrication (FFF) under monotonic and quasi-static cyclic compression. Utilizing in-house MWCNT-engineered PPR filament feedstocks, both bulk and cellular composites were realized. The morphological features of nanocomposites were examined via scanning electron microscopy, which reveals that MWCNTs are uniformly dispersed. The uniformly dispersed MWCNTs forms an electrically conductive network within the PPR matrix, and the resulting nanocomposite shows good electrical conductivity (⁓10−1S/cm), improved mechanical performance (modulus increases by 125% and compressive strength increases by 25% for 8 wt% MWCNT loading) and pronounced piezoresistive response (gauge factor of 27.9–8.5 for bulk samples) under compression. The influence of strain rate on the piezoresistive response of bulk samples (4 wt% of MWCNT) under compression was also measured. Under repeated cyclic compression (2% constant strain amplitude), the nanocomposite exhibited stable piezoresistive performance up to 100 cycles. The piezoresistive response under repeated cyclic loading with increasing strain amplitude of was also assessed. The gauge factor of BCC and FCC cellular composites (4 wt% of MWCNT) with a relative density of 30% was observed to be 46.4 and 30.2 respectively, under compression. The higher sensitivity of the BCC plate-lattice could be attributed to its higher degree of stretching-dominated deformation behavior than the FCC plate-lattice, which exhibits bending-dominated behavior. The 3D printed cellular PPR/MWCNT composites structures were found to show excellent piezoresistive self-sensing characteristics and open new avenues for in situ structural health monitoring in various applications. |
| first_indexed | 2024-03-08T23:38:16Z |
| format | Article |
| id | doaj.art-f442429c0d8b4a358be30fd4d957838e |
| institution | Directory Open Access Journal |
| issn | 2214-9147 |
| language | English |
| last_indexed | 2024-03-08T23:38:16Z |
| publishDate | 2023-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj.art-f442429c0d8b4a358be30fd4d957838e2023-12-14T05:23:01ZengKeAi Communications Co., Ltd.Defence Technology2214-91472023-12-01301322Multifunctional characteristics of 3D printed polymer nanocomposites under monotonic and cyclic compressionPawan Verma0Jabir Ubaid1Fahad Alam2Suleyman Deveci3S. Kumar4Department of Mechanical Engineering, Khalifa University of Science and Technology, Masdar Institute, Masdar City, P.O. Box 54224, Abu Dhabi, United Arab EmiratesDepartment of Mechanical Engineering, Khalifa University of Science and Technology, Masdar Institute, Masdar City, P.O. Box 54224, Abu Dhabi, United Arab EmiratesDepartment of Mechanical Engineering, Khalifa University of Science and Technology, Masdar Institute, Masdar City, P.O. Box 54224, Abu Dhabi, United Arab EmiratesBorouge Pte. Ltd., Innovation Centre, Sas Al Nakhl, 6951, Abu Dhabi, United Arab EmiratesJames Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK; Corresponding author.This study presents the multifunctional characteristics of multi-walled carbon nanotube (MWCNT)/polypropylene random copolymer (PPR) composites enabled via fused filament fabrication (FFF) under monotonic and quasi-static cyclic compression. Utilizing in-house MWCNT-engineered PPR filament feedstocks, both bulk and cellular composites were realized. The morphological features of nanocomposites were examined via scanning electron microscopy, which reveals that MWCNTs are uniformly dispersed. The uniformly dispersed MWCNTs forms an electrically conductive network within the PPR matrix, and the resulting nanocomposite shows good electrical conductivity (⁓10−1S/cm), improved mechanical performance (modulus increases by 125% and compressive strength increases by 25% for 8 wt% MWCNT loading) and pronounced piezoresistive response (gauge factor of 27.9–8.5 for bulk samples) under compression. The influence of strain rate on the piezoresistive response of bulk samples (4 wt% of MWCNT) under compression was also measured. Under repeated cyclic compression (2% constant strain amplitude), the nanocomposite exhibited stable piezoresistive performance up to 100 cycles. The piezoresistive response under repeated cyclic loading with increasing strain amplitude of was also assessed. The gauge factor of BCC and FCC cellular composites (4 wt% of MWCNT) with a relative density of 30% was observed to be 46.4 and 30.2 respectively, under compression. The higher sensitivity of the BCC plate-lattice could be attributed to its higher degree of stretching-dominated deformation behavior than the FCC plate-lattice, which exhibits bending-dominated behavior. The 3D printed cellular PPR/MWCNT composites structures were found to show excellent piezoresistive self-sensing characteristics and open new avenues for in situ structural health monitoring in various applications.http://www.sciencedirect.com/science/article/pii/S221491472300140XCarbon nanotubesNanoengineered polymer composites3D printingPiezoresistive self-sensingLattice structures |
| spellingShingle | Pawan Verma Jabir Ubaid Fahad Alam Suleyman Deveci S. Kumar Multifunctional characteristics of 3D printed polymer nanocomposites under monotonic and cyclic compression Defence Technology Carbon nanotubes Nanoengineered polymer composites 3D printing Piezoresistive self-sensing Lattice structures |
| title | Multifunctional characteristics of 3D printed polymer nanocomposites under monotonic and cyclic compression |
| title_full | Multifunctional characteristics of 3D printed polymer nanocomposites under monotonic and cyclic compression |
| title_fullStr | Multifunctional characteristics of 3D printed polymer nanocomposites under monotonic and cyclic compression |
| title_full_unstemmed | Multifunctional characteristics of 3D printed polymer nanocomposites under monotonic and cyclic compression |
| title_short | Multifunctional characteristics of 3D printed polymer nanocomposites under monotonic and cyclic compression |
| title_sort | multifunctional characteristics of 3d printed polymer nanocomposites under monotonic and cyclic compression |
| topic | Carbon nanotubes Nanoengineered polymer composites 3D printing Piezoresistive self-sensing Lattice structures |
| url | http://www.sciencedirect.com/science/article/pii/S221491472300140X |
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