Numerical evaluation of thermal stresses generated in laminated composite structure exposed to low temperatures

Abdallah, Abdulrazag Elmiladi; Petrović, Marko D.; Grbović, Aleksandar; Sedmak, Aleksandar; Balac, Martina

doi:10.2298/tsci200729338e

Cited by 2 publications

(1 citation statement)

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“…Moreover, studies have also been conducted to study the time-temperature creep behavior on CFRP, [23][24][25] while other researchers investigated the numerical simulation of the thermal stress of the CFRP laminated composites. [26][27][28] However, Benli et al 29 showed that the contribution of thermal stress to impact damage increases with decreasing temperature. The stress at low temperatures significantly influences the impact damage and parameters of unidirectional CFRP composite laminates.…”

Section: Introductionmentioning

confidence: 99%

Effects of high operating temperatures and holding times on thermomechanical and mechanical properties of autoclaved epoxy/carbon composite laminates

et al. 2021

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The elevated operating temperature is considered an essential factor affecting the performance of laminated composite structures. Under the intended conditions of use in aircraft engines and nacelles, carbon fiber reinforced polymers are exposed to temperatures ranging from room temperature to 120 C. The present work concentrates on the thermomechanical and mechanical properties of autoclaved woven carbon fiber/epoxy composite laminate subjected to different operating temperatures (60, 120, and 180 C) and holding times (10, 30, and 60 min). Thermomechanical results showed that the rigidity and stiffness of the epoxy resin matrix decrease with increasing temperature. However, all mechanical properties (laminate compressive modulus, laminate compressive strength, and interlaminar shear strength) decreased progressively with operating temperature. Laminate compressive strength and interlaminar shear strength were seen to decline up to 43.74% and 30.60% on the operating temperature of 180 C, respectively, compared to measured values at 60 C. This study indicates that only the compression properties were affected by the holding time, while the interaction between the operating temperature and holding time affects the laminate compressive modulus.

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