Fracture toughness of moldable low-temperature carbonized elastomer-based composites filled with shungite and short carbon fibers
This work evaluated the fracture toughness of the low-temperature carbonized elastomer-based composites filled with shungite and short carbon fibers. The effects of the carbonization temperature and filler content on the critical stress intensity factor (K1c) were examined. The K1c parameter was obt...
| Main Authors: | , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
MDPI
2022
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| _version_ | 1826308052792377344 |
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| author | Ignatyev, SD Statnik, ES Ozherelkov, DY Zherebtsov, DD Salimon, AI Chukov, DI Tcherdyntsev, VV Stepashkin, AA Korsunsky, AM |
| author_facet | Ignatyev, SD Statnik, ES Ozherelkov, DY Zherebtsov, DD Salimon, AI Chukov, DI Tcherdyntsev, VV Stepashkin, AA Korsunsky, AM |
| author_sort | Ignatyev, SD |
| collection | OXFORD |
| description | This work evaluated the fracture toughness of the low-temperature carbonized elastomer-based composites filled with shungite and short carbon fibers. The effects of the carbonization temperature and filler content on the critical stress intensity factor (K1c) were examined. The K1c parameter was obtained using three-point bending tests for specimens with different l/b ratio (notch depth to sample thickness) ranging from 0.2 to 0.4. Reliable detection of the initiation and propagation of cracks was achieved using an acoustic sensor was attached to the samples during the bending test. The critical stress intensity factor was found to decrease linearly with increasing carbonization temperature. As the temperature increased from 280 to 380 °C, the K1c parameter was drastically reduced from about 5 to 1 MPa·m1/2 and was associated with intense outgassing during the carbonization step that resulted in sample porosity. The carbon fiber addition led to some incremental toughening; however, it reduced the statistical dispersion of the K1c values. |
| first_indexed | 2024-03-07T07:13:51Z |
| format | Journal article |
| id | oxford-uuid:65cf0396-b64c-4f14-9125-bd76ae2b96d3 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:13:51Z |
| publishDate | 2022 |
| publisher | MDPI |
| record_format | dspace |
| spelling | oxford-uuid:65cf0396-b64c-4f14-9125-bd76ae2b96d32022-07-13T17:40:45ZFracture toughness of moldable low-temperature carbonized elastomer-based composites filled with shungite and short carbon fibersJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:65cf0396-b64c-4f14-9125-bd76ae2b96d3EnglishSymplectic ElementsMDPI2022Ignatyev, SDStatnik, ESOzherelkov, DYZherebtsov, DDSalimon, AIChukov, DITcherdyntsev, VVStepashkin, AAKorsunsky, AMThis work evaluated the fracture toughness of the low-temperature carbonized elastomer-based composites filled with shungite and short carbon fibers. The effects of the carbonization temperature and filler content on the critical stress intensity factor (K1c) were examined. The K1c parameter was obtained using three-point bending tests for specimens with different l/b ratio (notch depth to sample thickness) ranging from 0.2 to 0.4. Reliable detection of the initiation and propagation of cracks was achieved using an acoustic sensor was attached to the samples during the bending test. The critical stress intensity factor was found to decrease linearly with increasing carbonization temperature. As the temperature increased from 280 to 380 °C, the K1c parameter was drastically reduced from about 5 to 1 MPa·m1/2 and was associated with intense outgassing during the carbonization step that resulted in sample porosity. The carbon fiber addition led to some incremental toughening; however, it reduced the statistical dispersion of the K1c values. |
| spellingShingle | Ignatyev, SD Statnik, ES Ozherelkov, DY Zherebtsov, DD Salimon, AI Chukov, DI Tcherdyntsev, VV Stepashkin, AA Korsunsky, AM Fracture toughness of moldable low-temperature carbonized elastomer-based composites filled with shungite and short carbon fibers |
| title | Fracture toughness of moldable low-temperature carbonized elastomer-based composites filled with shungite and short carbon fibers |
| title_full | Fracture toughness of moldable low-temperature carbonized elastomer-based composites filled with shungite and short carbon fibers |
| title_fullStr | Fracture toughness of moldable low-temperature carbonized elastomer-based composites filled with shungite and short carbon fibers |
| title_full_unstemmed | Fracture toughness of moldable low-temperature carbonized elastomer-based composites filled with shungite and short carbon fibers |
| title_short | Fracture toughness of moldable low-temperature carbonized elastomer-based composites filled with shungite and short carbon fibers |
| title_sort | fracture toughness of moldable low temperature carbonized elastomer based composites filled with shungite and short carbon fibers |
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