Fatigue damage simulation of tension-tension loaded glass/polyester fiber composites with thickness tapering effects

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Resumé

This study evaluates the capability of a progressive damage method in predicting the fatigue failure in glass/polyester fiber composite materials. Residual material properties in different failure modes have been obtained from testing fatigue loaded specimens to their ultimate limits. A numerical tool utilizes the experimentally obtained values to simulate the process of damage in more complex models with high interlaminar shear stresses. The tool accounts for fatigue damage through stiffness and strength degradation rules without relying on prior calibration/modifications. Benchmark ply-drop problems under constant and variable amplitude fatigue loadings are simulated and compared against experimental results. Verification case studies show that the numerical tool can predict damage initiation and final fatigue life, successfully.
OriginalsprogEngelsk
TidsskriftJournal of Composite Materials
Antal sider18
ISSN0021-9983
DOI
StatusUdgivet - 1 feb. 2019

Fingeraftryk

Polyesters
Fatigue damage
Fatigue of materials
Glass
Fibers
Composite materials
Fatigue testing
Failure modes
Shear stress
Materials properties
Stiffness
Calibration
Degradation

Emneord

    Citer dette

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    title = "Fatigue damage simulation of tension-tension loaded glass/polyester fiber composites with thickness tapering effects",
    abstract = "This study evaluates the capability of a progressive damage method in predicting the fatigue failure in glass/polyester fiber composite materials. Residual material properties in different failure modes have been obtained from testing fatigue loaded specimens to their ultimate limits. A numerical tool utilizes the experimentally obtained values to simulate the process of damage in more complex models with high interlaminar shear stresses. The tool accounts for fatigue damage through stiffness and strength degradation rules without relying on prior calibration/modifications. Benchmark ply-drop problems under constant and variable amplitude fatigue loadings are simulated and compared against experimental results. Verification case studies show that the numerical tool can predict damage initiation and final fatigue life, successfully.",
    keywords = "Damage mechanics, progressive failure, ply-drops, life prediction, residual strength, degraded stiffness, fatigue life, tapered laminates",
    author = "{Raeis Hosseiny}, {Seyed Aydin} and Johnny Jakobsen",
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    N2 - This study evaluates the capability of a progressive damage method in predicting the fatigue failure in glass/polyester fiber composite materials. Residual material properties in different failure modes have been obtained from testing fatigue loaded specimens to their ultimate limits. A numerical tool utilizes the experimentally obtained values to simulate the process of damage in more complex models with high interlaminar shear stresses. The tool accounts for fatigue damage through stiffness and strength degradation rules without relying on prior calibration/modifications. Benchmark ply-drop problems under constant and variable amplitude fatigue loadings are simulated and compared against experimental results. Verification case studies show that the numerical tool can predict damage initiation and final fatigue life, successfully.

    AB - This study evaluates the capability of a progressive damage method in predicting the fatigue failure in glass/polyester fiber composite materials. Residual material properties in different failure modes have been obtained from testing fatigue loaded specimens to their ultimate limits. A numerical tool utilizes the experimentally obtained values to simulate the process of damage in more complex models with high interlaminar shear stresses. The tool accounts for fatigue damage through stiffness and strength degradation rules without relying on prior calibration/modifications. Benchmark ply-drop problems under constant and variable amplitude fatigue loadings are simulated and compared against experimental results. Verification case studies show that the numerical tool can predict damage initiation and final fatigue life, successfully.

    KW - Damage mechanics

    KW - progressive failure

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    KW - residual strength

    KW - degraded stiffness

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    KW - tapered laminates

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