High cycle fatigue under reversed bending of sandwich panels with GFRP skins and polyurethane foam core

Mathieson, Hale; Fam, Amir

doi:10.1016/j.compstruct.2014.02.027

Cited by 42 publications

(17 citation statements)

References 11 publications

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“…In a comparison‐based study, Mathieson and Fam studied the fatigue behavior of sandwich panels having a PUF core and GFRP face skins. Fatigue analysis was performed under reverse bending (R = −1) load conditions and a comparison was made with the fully unloaded (R = 0) case.…”

Section: Puf Core Sandwich Structuresmentioning

confidence: 99%

A review on recent advances in sandwich structures based on polyurethane foam cores

et al. 2020

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Sandwich composites with a polyurethane foam (PUF) core have become a versatile set of materials with applications ranging from basic construction elements to advanced engineering materials. This diverse range of applications has provided these sandwich materials with a distinctive position in today's engineering world. This review focuses on the broad research that has been carried out on PUF core‐based sandwich composites over the years—especially in the last decade. Thorough details have been presented focusing on basic PUF core sandwich structures, advanced PUF core sandwich composites with different kinds of reinforcements and complex structures such as hybrid sandwich panels. All the research presented here has been categorized carefully, such as the types of materials used in various studies, the types of reinforcements and testing techniques used, including mechanical, electrical, dynamic, thermal and acoustic methods etc. Comparisons have also been made based on similar materials, similar testing procedures and similar application areas. Research areas have been highlighted by giving a deep insight into the most promising research, manufacturing techniques and improvement procedures. Major consumption areas and application sectors for PUF core sandwich composites have also been discussed in this review. Finally, conclusions have been made based on the results found from a literature investigation.

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Section: Puf Core Sandwich Structuresmentioning

confidence: 99%

A review on recent advances in sandwich structures based on polyurethane foam cores

et al. 2020

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“…The results showed that the type-1 and -2 cores were very weak and flexible, but the third one showed a more strength and stiffness than the others. The effect of fully reversed bending loading on high cycle fatigue performance of composite panels was studied by Mathieson et al [36] by comparing them to similar panels tested under fully unloaded conditions. Their panels failed in shear of the foam core when the fatigue life reduced significantly at fully reversed loading to ~10% of that at fully unloaded conditions.…”

Section: Bending and Shear Behaviourmentioning

confidence: 99%

“…Their panels failed in shear of the foam core when the fatigue life reduced significantly at fully reversed loading to ~10% of that at fully unloaded conditions. They showed in order to achieve at least 2 million cycles-the commonly acceptable fatigue life in structural engineering-the maximum service loads should be limited to 30% and 45% of ultimate monotonic The effect of fully reversed bending loading on high cycle fatigue performance of composite panels was studied by Mathieson et al [36] by comparing them to similar panels tested under fully unloaded conditions. Their panels failed in shear of the foam core when the fatigue life reduced significantly at fully reversed loading to~10% of that at fully unloaded conditions.…”

Section: Bending and Shear Behaviourmentioning

confidence: 99%

Structural Performance of Polyurethane Foam-Filled Building Composite Panels: A State-Of-The-Art

et al. 2019

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Composite panels with polyurethane (PU) foam-core and facing materials, such as gypsum, engineered wood or some composite materials, are being used as structural members in building construction. This paper reviews and summarises major research developments, and provides an updated review of references on the structural performance of foam-filled building composite panels from 1998 to 2017. The review revealed that previous studies on the structural performance of foam-filled building composite panels could be categorised into five themes; namely, energy absorption and dynamic behaviour; bending and shear behaviour, edgewise and flatwise compressive/tensile behaviour; delamination/deboning issues; and finally some miscellaneous issues. These categories comprise approximately 30%, 40%, 11%, 11% and 8% of related studies over the last two decades, respectively. Also, over the past five years, the number of relevant studies has increased by ~400% relative to the previous similar periods, indicating the attention and focus of researchers to the importance of the structural performance of foam-filled composite panels.

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“…Carbon fiber reinforced plastics (CFRP) are widely used in the aerospace field due to their advantages, such as a high specific strength and modulus, a good fatigue resistance, a low friction coefficient and wear rate, and good thermal and electrical properties. However, the high fabrication cost and the very high maneuverability of modern aircraft easily drives the number of fatigue cycles of composite parts above 10 7 during their service life and very high cycle fatigue (10 7 -10 11 ) must be considered [1][2][3][4][5][6][7]. The fatigue has been extensively studied worldwide.…”

Section: Introductionmentioning

confidence: 99%

Very High Cycle Fatigue (VHCF) Characteristics of Carbon Fiber Reinforced Plastics (CFRP) under Ultrasonic Loading

Cui

Chen

et al. 2020

Materials

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A liquid nitrogen cooling system was developed to ensure the successful ultrasonic testing of composite materials to characterize the very High Cycle Fatigue (VHCF) of carbon fiber reinforced plastics (CFRP). The fatigue failure of CFRP occurs even in the very high cycle range and there is no traditional fatigue limit. The S–N curve of the CFRP presents a step whose characteristics appear in the transition between high cycle and very high cycle fatigue. The damage evolution of CFRP in the same field of view is investigated. The morphology of damaged CFRP composites under ultrasonic loading is described by three characteristics: matrix damage at the intersection of fiber bundles, near fiber bundle parallel section matrix cavity and matrix penetration. With the increasing of cycles, the damage process is also presented in turn according to these three characteristics. The post-fatigue bending modulus changed significantly from the pre-fatigue values, indicating that the VHCF had a considerable impact on the mechanical properties of the composite. An evolution threshold was introduced from the S–N curve to determine the fatigue evolution law from the high cycle regime to the very high cycle regime.

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High cycle fatigue under reversed bending of sandwich panels with GFRP skins and polyurethane foam core

Cited by 42 publications

References 11 publications

A review on recent advances in sandwich structures based on polyurethane foam cores

A review on recent advances in sandwich structures based on polyurethane foam cores

Structural Performance of Polyurethane Foam-Filled Building Composite Panels: A State-Of-The-Art

Very High Cycle Fatigue (VHCF) Characteristics of Carbon Fiber Reinforced Plastics (CFRP) under Ultrasonic Loading

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