Experimental and numerical multiscale approach to thermally cycled FRP

Lüders, Caroline; Kalinka, Gerhard; Li, Wei; Sinapius, Michael; Wille, Tobias

doi:10.1016/j.compstruct.2020.112303

Cited by 6 publications

(5 citation statements)

References 45 publications

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“…Moreover, for off-shore construction or aeronautics, investigating the effects of cyclic freeze–thaw conditions on mechanical response of FRPCs are vital. 63,64 An aircraft which descends from a cryogenic temperature of sky, i.e., −50 o C, to the ground levels with atmospheric temperature of 30 o C, is frequently exposed to thermal cycles and thermal shocks. 65 Therefore, clarification of the influences of temperature conditions such as thermal cycles and thermal shocks on mechanical response and efficiency of FRPCs is of great importance.…”

Section: Environmental Conditionsmentioning

confidence: 99%

“…They also found in another work that composite fracture mostly occurs by debonding, fiber breakage, fiber pull-out (during tension) and shear fracture of fiber (during compression) mechanisms. 105 Lüders et al 63 implied that at the micro scale (between fiber and matrix), stresses caused by different thermal expansion are generated within the fibers, matrix and fiber/matrix interface. This leads to an anisotropic thermal expansion behavior of the unidirectional composite plies.…”

Section: Thermal Shock and Thermal Cyclesmentioning

confidence: 99%

See 1 more Smart Citation

A review on critical aspects of thermal shocks and thermal cycles in fiber reinforced polymer composites

Jamshidi

Hejazi

Sheikhzadeh

et al. 2022

Journal of Reinforced Plastics and Composites

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Fiber reinforced polymer composites (FRPCs) have gained great progress in a wide range of applications from construction and building structures to automobile and vehicle systems. During the operational lifetime, some FRPCs are exposed to various environmental conditions such as thermal cycles and thermal shocks. Fluctuation of the ambient temperature in the forms of thermal shocks or thermal cycles is one of the most important factors that deteriorate the durability and performance of the FRPCs. Compared to ceramic composites, less attention has been paid to the effects of thermal shocks and thermal cycles on the physical/mechanical properties of FRPCs. A comprehensive insight for the future advancements in this field is essential to possibly reduce the failure risks of FRPCs under thermal shocks and thermal cycles. The present work provides a comprehensive review on the physical/mechanical behavior of FRPCs under thermal cycles and thermal shocks. This work also provides a broad review on several factors that determines mechanical behavior of FRPCs, such as polymeric matrix, fiber type, incorporated nanofillers and fiber/polymer interface. Recent studies denoting important aspects and possible problems in mechanical performance of FRPCs under thermal shocks are also summarized.

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Section: Environmental Conditionsmentioning

confidence: 99%

Section: Thermal Shock and Thermal Cyclesmentioning

confidence: 99%

A review on critical aspects of thermal shocks and thermal cycles in fiber reinforced polymer composites

Jamshidi

Hejazi

Sheikhzadeh

et al. 2022

Journal of Reinforced Plastics and Composites

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“…In particular, these uncertainties may include both aleatory and epistemic variations in material properties. Hence, it is desirable to develop an efficient uncertainty quantification method to measure variations in structural performance of composite structures due to hybrid uncertainties in micro- and macro-scale parameters [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

“…Notably, FRP’s multi-scale nature, especially its material phases across different scales, profoundly affects the safety and performance of the resulting structures [ 11 , 12 ]. In addition, variations in fiber volume fraction, material composition arising from manufacturing processes also significantly influence the design of FRP structures with clearly defined safety [ 8 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

A Metamodel-Based Multi-Scale Reliability Analysis of FRP Truss Structures under Hybrid Uncertainties

Zhao,

Zhou,

2023

Materials

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This study introduces a Radial Basis Function-Genetic Algorithm-Back Propagation-Importance Sampling (RBF-GA-BP-IS) algorithm for the multi-scale reliability analysis of Fiber-Reinforced Polymer (FRP) composite structures. The proposed method integrates the computationally powerful RBF neural network with GA, BP neural network and IS to efficiently calculate inner and outer optimization problems for reliability analysis with hybrid random and interval uncertainties. The investigation profoundly delves into incorporating both random and interval parameters in the reliability appraisal of FRP constructs, ensuring fluctuating parameters within designated boundaries are meticulously accounted for, thus augmenting analytic exactness. In application, the algorithm was subjected to diverse structural evaluations, including a seven-bar planar truss, an architectural space dome truss, and an intricate nonlinear truss bridge. Results demonstrate the algorithm’s exceptional performance in terms of model invocation counts and accurate failure probability estimation. Specifically, within the seven-bar planar truss evaluation, the algorithm exhibited a deviation of 0.08% from the established failure probability benchmark.

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“…The results revealed that thermal stresses are intense along fiber-direction of the composite laminates. Moreover, the CFRP composite material also offers good resistance to thermal stress, even at elevated temperatures up to 1070 • C. Luders et al [35] presented an experimental and numerical multiscale approach for investigating thermally cycled FRP which contributes to the understanding of the damage mechanisms and increase the predictability of the fatigue damage at thermal loading conditions. The cycled thermal loading of FRP is investigated at the microscale (level of fibre-matrix-interaction) and macroscale (level of the multidirectional laminate).…”

Section: Introductionmentioning

confidence: 99%

Temperature Influence on Additive Manufactured Carbon Fiber Reinforced Polymer Composites

Muna

Mieloszyk

2021

Materials

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The popular applications of Additive Manufactured (AM) polymer materials in engineering, medical, and industrial fields have been widely recognized due to their high-speed production despite their complex design shapes. Fused Deposition Modeling (FDM) is the technique that has become the most renowned AM process due to its simplicity and because it is the cheapest method. The main objective of this research is to perform a numerical simulation of the thermo-mechanical behaviour of AM polymer with continuous carbon fibre reinforcement exposed to elevated temperatures. The influence of global thermal loads on AM material was focused on mechanical property changes at the microscale (level of fiber–matrix interaction). The mechanical response (strain/stress distribution) of the AM material on the temperature loading was modelled using the finite element method (FEM). The coupled thermal-displacement analysis was used during the numerical calculations. The strain in the sample due to its exposition on elevated temperature was measured using fibre Bragg grating (FBG) sensors. The numerical results were compared with the experimental results achieved for the sample exposure to the same thermal conditions showing good agreement. A strong influence of the temperature on the matrix structure and the condition of bondings between fibres and matrix was observed.

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Experimental and numerical multiscale approach to thermally cycled FRP

Cited by 6 publications

References 45 publications

A review on critical aspects of thermal shocks and thermal cycles in fiber reinforced polymer composites

A review on critical aspects of thermal shocks and thermal cycles in fiber reinforced polymer composites

A Metamodel-Based Multi-Scale Reliability Analysis of FRP Truss Structures under Hybrid Uncertainties

Temperature Influence on Additive Manufactured Carbon Fiber Reinforced Polymer Composites

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