Mechanical behavior of carbon/PEKK thermoplastic composite tube under bending load

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DOIResolve DOI: http://doi.org/10.1177/0892705710367978
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TypeArticle
Journal titleJournal of Thermoplastic Composite Materials
ISSN0892-7057
Volume24
Issue1
Pages2949; # of pages: 21
SubjectAbsorption of energy; Bending load; carbon/PEKK; Circumferential direction; Interlaminar normal stress; interlaminar stresses; Landing gear; large deformation; Load drops; Load points; Mechanical behavior; Strain limit; Strategic placement; Thermoplastic composite; thermoplastic composite tube; Thickness direction; Bending (forming); Deformation; Landing gear (aircraft); Mechanical engineering; Reinforced plastics; Thermoplastics; Tubes (components)
AbstractIn an effort to develop thermoplastic composite tubes for helicopter landing gear applications, the mechanical behavior of straight tubes subjected to bending has been studied and presented here. It was found that interlaminar normal stresses of large values exist between layers located under the loading point. This can cause delamination between different layers at location under the loading point. The stiffness of the tube along the circumferential direction is important to prevent inward deformation under the load point, which can lead to buckling and sudden load drop. The absorption of energy upon fracture depends on the strategic placement of layers having different strain limits at proper locations along the thickness direction. © The Author(s), 2011.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace (AERO-AERO)
Peer reviewedYes
NPARC number21271323
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Record identifierebb5f78b-506b-432f-baa0-7181c4366e93
Record created2014-03-24
Record modified2016-05-09
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