Mesoscale modelling of delamination using the cohesive zone model approach

Carreras, Laura; Guillamet, G.; Quintanas-Corominas, A.; Renart, J.

doi:10.1016/b978-0-12-818984-9.00018-4

Cited by 4 publications

(1 citation statement)

References 106 publications

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“…Mechanical hysteresis loops, characteristic of cyclic loading, can change their shape and parameters depending on the structural state of the material, which enables to use them for assessing the damage development [29][30][31] The hysteresis loop area [32] and the dynamic moduli [21,33] were estimated by many researchers to analyze processes under cyclic loading. To assess the damages formed during fatigue tests, the reduction in the elastic modulus were mostly used, but not a change in the hysteresis loop areas.…”

Section: Introductionmentioning

confidence: 99%

An Automated Optical Strain Measurement System for Estimating Polymer Degradation under Fatigue Testing

Bogdanov

Panin

Lyubutin

et al. 2022

Sensors

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(1) Background: this study deals with design of an automated laboratory facility based on a servo-hydraulic testing machine for estimating parameters of mechanical hysteresis loops by means of the digital image correlation (DIC) method. (2) Methods: the paper presents a description of the testing facility, describes the grounds for calculating the elastic modulus, the offset yield strength (OYS) and the parameters of the mechanical hysteresis loops by the DIC method. (3) Results: the developed hardware-software facility was tested by studying the fatigue process in neat polyimide (PI) under various amplitude tension-tension loadings. It was found that the damage accumulation was accompanied by the decrease in the loop areas, while failure occurred when it reduced by at least ~5 kJ/m3. (4) Conclusions: it was shown that lowering the loop area along with changing the secant modulus value makes it possible to estimate the level of the scattered damage accumulation (mainly at the stresses above the OYS level). It was revealed that fractography data, namely the pattern and sizes of the fatigue crack initiation and propagation zones, did not correlate well with the dependences of the parameters of the hysteresis loops.

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Section: Introductionmentioning

confidence: 99%

An Automated Optical Strain Measurement System for Estimating Polymer Degradation under Fatigue Testing

Bogdanov

Panin

Lyubutin

et al. 2022

Sensors

View full text Add to dashboard Cite

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Platelet critical length for Prepreg Platelet Molded Composites

Aranke,

Pipes

2024

Composites Part A: Applied Science and Manufacturing

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The Suction Panel - xHLFC and Structural Solution for Energy Efficient Aviation

Wiedemann

Badrya

Prasannakumar

et al. 2022

AIAA SCITECH 2022 Forum

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Future energy-efficient aircraft requires a further drastic reduction in drag and weight. Is it contradictory to improve both at the same time? Is it possible to design a highly efficient HLFC system to be weight-neutral? The present study, performed within the Cluster of Excellence SE 2 A -Sustainable and Energy-Efficient Aviation, summarizes aspects and considerations of the contributing disciplines to derive a solution for a suction-based system on short-range aircraft wings with maximum efficiency, i.e. hybrid laminar flow control application capabilities at minimum weight penalty. Several new features -novel wing design and simulation tools, the potentials of thin plies for weigth saving and the 3D-printing possibilities for ventable core structures -are investigated to achive this goal.

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Mesoscale modelling of delamination using the cohesive zone model approach

Cited by 4 publications

References 106 publications

An Automated Optical Strain Measurement System for Estimating Polymer Degradation under Fatigue Testing

An Automated Optical Strain Measurement System for Estimating Polymer Degradation under Fatigue Testing

Platelet critical length for Prepreg Platelet Molded Composites

The Suction Panel - xHLFC and Structural Solution for Energy Efficient Aviation

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