Academic Journal
Interlaminar Shear Fatigue Damage Evolution of 2-D Carbon-Carbon Composites
| العنوان: | Interlaminar Shear Fatigue Damage Evolution of 2-D Carbon-Carbon Composites |
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| المؤلفون: | Williams, J. C., Yurgartis, S. W., Moosbrugger, J. C. |
| المصدر: | Journal of Composite Materials ; volume 30, issue 7, page 785-799 ; ISSN 0021-9983 1530-793X |
| بيانات النشر: | SAGE Publications |
| سنة النشر: | 1996 |
| الوصف: | Low-cycle and high-cycle bending fatigue experiments were conducted on 2-D woven carbon-carbon composites at room temperature to evaluate the possible evolution of damage within their complex microstructure. Since carbon-carbons are known to be weak in interlaminar shear, a 3-point bending geometry was chosen to produce high interlaminar shear stresses. This paper extends previous work by focusing on interlaminar shear fatigue, and by using a specially developed technique for the in-situ examination of distributed damage. For the low-cycle tests the load was cycled between 10% and 90% of the material's monotonic failure load; the range was 8% to 82% for the high-cycle experiments. A load-frame mounted optical microscope allowed the collection of digital images of the surface microstructure at various intervals up to 100,000 cycles for the low-cycle and up to 20 × 10 6 cycles for the high-cycle experiments. Microcrack lengths and orientations were extracted from these images, which permitted defining a discrete damage function as a measure of the distributed microcrack damage. Within the uncertainty of the measurements, distributed fatigue damage evolution was not discovered. A slight increase in residual static strength was detected with no change in stiffness. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1177/002199839603000702 |
| الاتاحة: | https://doi.org/10.1177/002199839603000702 https://journals.sagepub.com/doi/pdf/10.1177/002199839603000702 |
| Rights: | https://journals.sagepub.com/page/policies/text-and-data-mining-license |
| رقم الانضمام: | edsbas.A3406E |
| قاعدة البيانات: | BASE |
| DOI: | 10.1177/002199839603000702 |
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