Kompozit Levhalar için Çok Numuneli Ankastre-Tip Eğilmeli Yorulma Test Makinesinin Geliştirilmesi

Balcıoğlu, H. Ersen; Sakin, Raif; Dumanay, Akif; Gün, Halit

doi:10.17714/gumusfenbil.304488

Cited by 2 publications

(2 citation statements)

References 34 publications

(12 reference statements)

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“…Thanks to the software interface that can be controlled by the computer, the data such as bending strength, stiffness loss, and load repetition number of each test sample can be recorded instantaneously. 29 Flexural fatigue tests. The flexural fatigue tests were performed at a full variable loading situation (R ¼ -1, tensile/compression) to force fatigue limits of the carbon/ epoxy composite material.…”

Section: Experimental Studiesmentioning

confidence: 99%

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Effects of hostile solutions on the static and dynamic behavior of carbon/epoxy composites

Balcıoğlu

Sakin

Gün

2021

Journal of Composite Materials

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Fiber-reinforced laminated composite is often used in harsh environments that may affect their static stability and long-term durability as well as residual strength. In this study, the effect of heavy chemical environments such as acid and alkaline and retaining time for these environments on flexural strength and flexural fatigue behavior of carbon/epoxy laminated composites were investigated. In this context, carbon/epoxy was retained into an acidic and alkaline solution having 5%, 15%, and 25% concentration by weight for 1–4 months. Fatigue behavior of carbon/epoxy was determined under dynamic flexural load, which corresponds to 80%, 70%, 60%, 50%, and 40% of static three-point bending strength of the test sample. SEM image of damaged specimens was taken to describe the failure mechanism of damage which occurs after fatigue. Also, to better understand environmental condition on the fatigue life, results were compared with results of carbon/epoxy laminated composites, which were not retained into any environments (unretained). The test results showed that the solution type, solution concentration, and retaining time caused noticeable changes in the static and dynamic strengths of carbon/epoxy laminated composites.

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Section: Experimental Studiesmentioning

confidence: 99%

“…For this reason, the relationship between the stress and strain of the composite structure is determined according to the principle of the Hooke law. The displacement values which will give the desired stress value were calculated by using equations (3) to ( 5), given below 29,30…”

Section: Experimental Studiesmentioning

confidence: 99%