Conference paper Open Access

Fracture Mechanics Analysis of Composites with Ply-drops - Measurement of Delamination Fatigue Crack Growth Rate

Goutianos, Stergios; Sørensen, Bent F.


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        "title": "Damage Controlled Composite Materials", 
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    "keywords": [
      "Tunneling crack", 
      "Delamination", 
      "Cohesive law", 
      "Fatigue crack growth rate"
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    "publication_date": "2018-06-25", 
    "creators": [
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        "affiliation": "Technical University of Denmark", 
        "name": "Goutianos, Stergios"
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        "affiliation": "Technical University of Denmark", 
        "name": "S\u00f8rensen, Bent F."
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    "description": "<p>Ply-drops must be taken into account in the design of composite structures due to the initiation and propagation of delaminations at ply-drop locations. This damage mode is experimentally investigated in tension-tension fatigue and the fatigue delamination growth rate is measured for two (external and internal) ply-drop geometries. It is found that the fatigue delaminations grow at a constant rate. Fracture mechanics, using the finite element method, is used to analyse the ply-drops. The influence of material and geometric parameters on the fracture energy release rate is investigated.</p>"
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