Effect of Internal Technological Defects and Loading Waveform on Structural Composite Fatigue Life
This paper explores the effect of internal technological defects on the fatigue life of carbon fiber reinforced plastic (CFRP) under simple loading waveforms. One conducted experiments on CFRP specimens with embedded artificial defects, including delamination’s (circular dry-spot) and wrinkling. Fo...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2024-10-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://fracturae.com/index.php/fis/article/view/5122 |
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| author | Anastasia Lykova Dmitriy Lobanov Alexander Pankov Mikhail Ugolnikov |
| author_facet | Anastasia Lykova Dmitriy Lobanov Alexander Pankov Mikhail Ugolnikov |
| author_sort | Anastasia Lykova |
| collection | DOAJ |
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This paper explores the effect of internal technological defects on the fatigue life of carbon fiber reinforced plastic (CFRP) under simple loading waveforms. One conducted experiments on CFRP specimens with embedded artificial defects, including delamination’s (circular dry-spot) and wrinkling. Following quasi-static tests, one developed a fatigue testing program using triangular and sine waveforms. The findings indicate that these simple waveforms do not significantly affect the fatigue resistance of defect-free CFRP or CFRP with internal technological defects. The presence of the wrinkling defect significantly diminishes the fatigue resistance of CFRP. However, constructing fatigue life curves in relative terms reveals that the reduction in fatigue properties is directly related to a decrease in strength properties. In the case of delamination (dry-spot) defects, a reduction in fatigue life by approximately 2.5 times was observed across the tested range.
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| format | Article |
| id | doaj-art-08be515c1dda454bb51a598ff3094a30 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-08be515c1dda454bb51a598ff3094a302025-02-03T11:22:16ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932024-10-011971Effect of Internal Technological Defects and Loading Waveform on Structural Composite Fatigue LifeAnastasia Lykova0https://orcid.org/0000-0003-4873-6351Dmitriy Lobanov1https://orcid.org/0000-0003-1948-436XAlexander Pankov2https://orcid.org/0000-0001-7505-1484Mikhail Ugolnikov3https://orcid.org/0009-0003-9997-1615Center of Experimental Mechanics, Perm National Research Polytechnic University, RussiaCenter of Experimental Mechanics, Perm National Research Polytechnic University, RussiaCenter of Experimental Mechanics, Perm National Research Polytechnic University, RussiaCenter of Experimental Mechanics, Perm National Research Polytechnic University, Russia This paper explores the effect of internal technological defects on the fatigue life of carbon fiber reinforced plastic (CFRP) under simple loading waveforms. One conducted experiments on CFRP specimens with embedded artificial defects, including delamination’s (circular dry-spot) and wrinkling. Following quasi-static tests, one developed a fatigue testing program using triangular and sine waveforms. The findings indicate that these simple waveforms do not significantly affect the fatigue resistance of defect-free CFRP or CFRP with internal technological defects. The presence of the wrinkling defect significantly diminishes the fatigue resistance of CFRP. However, constructing fatigue life curves in relative terms reveals that the reduction in fatigue properties is directly related to a decrease in strength properties. In the case of delamination (dry-spot) defects, a reduction in fatigue life by approximately 2.5 times was observed across the tested range. https://fracturae.com/index.php/fis/article/view/5122Carbon fiber compositeMechanical behaviourDry-spotWrinklesFatigueTension |
| spellingShingle | Anastasia Lykova Dmitriy Lobanov Alexander Pankov Mikhail Ugolnikov Effect of Internal Technological Defects and Loading Waveform on Structural Composite Fatigue Life Fracture and Structural Integrity Carbon fiber composite Mechanical behaviour Dry-spot Wrinkles Fatigue Tension |
| title | Effect of Internal Technological Defects and Loading Waveform on Structural Composite Fatigue Life |
| title_full | Effect of Internal Technological Defects and Loading Waveform on Structural Composite Fatigue Life |
| title_fullStr | Effect of Internal Technological Defects and Loading Waveform on Structural Composite Fatigue Life |
| title_full_unstemmed | Effect of Internal Technological Defects and Loading Waveform on Structural Composite Fatigue Life |
| title_short | Effect of Internal Technological Defects and Loading Waveform on Structural Composite Fatigue Life |
| title_sort | effect of internal technological defects and loading waveform on structural composite fatigue life |
| topic | Carbon fiber composite Mechanical behaviour Dry-spot Wrinkles Fatigue Tension |
| url | https://fracturae.com/index.php/fis/article/view/5122 |
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