An evaluation of fatigue limit of notched specimen of a C/C composite

Makabe, Chobin; Fujikawa, Masaki; Ferdous, Md. Shafiul

doi:10.1088/1757-899x/372/1/012001

Cited by 2 publications

(3 citation statements)

References 8 publications

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“…It actually acts like a plain specimen. The damage in the matrix was expanded in large area, the fatigue limit σw became lowest in the case of blunt notched specimens [1,2]. The share deformation and succeeding broken behavior of carbon fiber is related to the fiber constraint [3][4][5][6].…”

Section: Resultsmentioning

confidence: 99%

Notch Sensitivity on Fatigue Behavior of Carbon-Carbon Composites

Mia

Ferdous

2020

KEM

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The fatigue strengths in notched specimens of carbon-carbon composites were investigated. Slits of different length were cut on both sides of a test section to investigate the impact of notch sensitivity on fatigue life. Specimens with blunt-notches on the both side of the specimen, and center hole were also used to compare the critical stress, sw. The fatigue limit was measured using S-N curves. From the experimental result, it was found that specimens with blunt-notches have lowest fatigue limit. The relationships between critical stress, sw and specimen geometry were investigated by stress concentration factor, Kt and stress intensity factor, KI which was done two dimensional body forced methods. Consequently, it was discussed that the damage condition in the vicinity of the notch or slit, and the crack initiation behavior affects the fatigue strength. Also, the S-N curve and fatigue limit was related to the crack growth in shear mode.

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Section: Resultsmentioning

confidence: 99%

Notch Sensitivity on Fatigue Behavior of Carbon-Carbon Composites

Mia

Ferdous

2020

KEM

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“…We can approximate that inter laminar bonding between the woven carbon fiber cloth and aluminum foil or plate was not effective. The fracture pattern and crack growth behavior has been discussed in the previous article [2]. For B and C type specimen, crack initiated from notch tip and cut the fibers with shear mode within the notch tip area and then crack has been propagated in shear mode.…”

Section: Key Engineering Materials Vol 841mentioning

confidence: 99%

“…In the previous study, a basic study was conducted on the strength characteristics of composite materials having woven carbon fibers with notched specimen or slit specimens [1]. It was discussed that the fatigue limit of the smooth specimen was predicted from the result of the notched specimen and the effect of the long fiber direction on the fatigue behavior was analyzed [1][2][3][4]. The hybrid composites were prepared in the present study by assembling one after another from commercially available woven carbon fiber sheet along with the aluminum foil, and thin aluminum plate aligned with uniaxial direction and impregnating the cloth with the epoxy resin.…”

Section: Introductionmentioning

confidence: 99%

Fatigue and Fracture Mechanism of Aluminum-Carbon Fiber Reinforced Hybrid Composites

Rahman

Ferdous

2020

KEM

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The fatigue limit and fracture behavior of epoxy carbon fiber reinforced composites and hybrid composites were investigated. An aluminum foil and thin aluminum plate were incorporated with the carbon fiber to make the hybrid reinforced composites. Several specimens were prepared, and a series of tests were carried out to investigate the fatigue life and fracture behavior. Then the results were compared among epoxy carbon fiber reinforced composites and the hybrid composites. It is discussed whether the S–N curves shows almost the similar characteristics of these two types of hybrid composites or not. As far as the present result, the stress ratio and the type of hybrid composites effect on the fatigue life. The interfacial bonding plays an important role in the strength and fracture behavior of notched specimen of the fabricated composites.

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An evaluation of fatigue limit of notched specimen of a C/C composite

Cited by 2 publications

References 8 publications

Notch Sensitivity on Fatigue Behavior of Carbon-Carbon Composites

Notch Sensitivity on Fatigue Behavior of Carbon-Carbon Composites

Fatigue and Fracture Mechanism of Aluminum-Carbon Fiber Reinforced Hybrid Composites

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