Mechanical Behavior of Carbon/PEKK Thermoplastic Composite Tube Under Bending Load

Derisi, Bijan; Hoa, Suong V.; Xu, Duosheng; Hojjati, Mehdi; Fews, R.C.

doi:10.1177/0892705710367978

Cited by 16 publications

(8 citation statements)

References 11 publications

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“…Poly(aryl ether ketone)s (PAEKs) are a family of high‐performance thermoplastics that offer excellent chemical and thermal resistance, good mechanical properties, and manufacturability into end‐use components for critical applications. They find widespread use in the medical, semiconductor manufacturing, aerospace, automotive and petrochemical industries. Poly(ether ether ketone) (PEEK) (Figure (a)) is the most widely available of the PAEK family, has the largest production volume, and performs well in most sealing and connector applications that involve contact with drilling fluids and sour (sulfur containing) crude oil under high‐pressure and high‐temperature conditions.…”

Section: Introductionmentioning

confidence: 99%

Enhancing resistance of poly(ether ketone ketone) to high‐temperature steam through crosslinking and crystallization control

Veazey

Hsu²,

Gomez

2019

J of Applied Polymer Sci

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Poly(aryl ether ketone)s (PAEKs) are promising materials for harsh environments, such as in high‐temperature steam applications. Here, the effect of high‐temperature steam on the crystallinity and mechanical properties of existing poly(ether ether ketone) (PEEK) and PEKK(T/I) polymers is investigated. Differential scanning calorimetry (DSC), wide‐angle X‐ray scattering or diffraction (WAXD), and dynamic mechanical analysis experiments show these materials undergo significant crystallization and reorganization after prolonged exposure to steam and suffer from embrittlement. In addition, we show that xanthydrol‐based crosslinks can provide the dimensional stability and stabilize the PEKK crystal structure. Mechanical tests demonstrate that the ductility is preserved for longer exposures to steam compared to neat PEKK, whereas DSC and WAXD data indicate xanthydrol crosslinks effectively stabilize the crystal structure against steam‐assisted crystallization. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47727.

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Section: Introductionmentioning

confidence: 99%

Enhancing resistance of poly(ether ketone ketone) to high‐temperature steam through crosslinking and crystallization control

Veazey

Hsu²,

Gomez

2019

J of Applied Polymer Sci

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“…For example, the current simulation methodology is based on pure bending assumption. However, in Derisi et al 2,3 it was found that for composite tubes, the adjacent layers have complex interactions in three-point bending configuration, which is simply not the case for an aluminum structure. This might also be due to the effects of shear deformation, which would not show up in the predicted <EI> values.…”

Section: Discussionmentioning

confidence: 98%

“…In spite of these, the authors have developed a generic stacking sequence that enables a composite tube to match the flexural stiffness, load-bearing capability and energy absorption of a target aluminum tube via strategic location of the plies across the thickness. 2,3 Such tubes are called equivalent in this study. The equivalency in energy absorption imposes two conditions on the composite tube.…”

Section: Introductionmentioning

confidence: 99%

Similitude study on bending stiffness and behavior of composite tubes

Derisi

Hoa

Hojjati

2012

Journal of Composite Materials

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A procedure to design a composite tube that matches the flexural stiffness, load-carrying capacity, and energy absorption of an aluminum tube while subjected to bending load is of interest. The large deformation and energy absorption requirements are fulfilled through the progressive failure of the plies of suitable fiber orientations across the thickness of the tube. The layer wise nature of the composite tubes and cylindrical anisotropy, however, has impeded obtaining a simple closed-form solution for calculating the flexural stiffness. Available analytical solutions are mainly a complex set of equations, which should be solved simultaneously. In addition, the boundary and interface conditions between the adjacent plies must be satisfied. This article presents a straightforward simulation technique for this purpose. First, the tube is correlated to a corresponding composite sandwich panel, the flexural stiffness of which is obtained by the classical laminate theory. Then an analogous aluminum sandwich panel is designed and is correlated to a so-called ‘equivalent’ aluminum tube. The bending stiffness of the composite tube is shown to be the same as that of its equivalent aluminum tube. As a result, a complex problem of cylindrical anisotropy is mapped into a Cartesian coordinate system and solved via the classical laminate theory. The accuracy of the technique is verified by experimental work and analytical solutions. The agreement between the three methods is shown.

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“…Bai et al [14] investigated the buckling behavior of thermoplastic pipes under combined bending and tension loads. Derisi et al [15] and Shadmehri et al [16] studied the composite tubes under bending. Effect of pressure, shear and torsion on anisotropic materials was analyzed by Ting [17,18].…”

Section: Introductionmentioning

confidence: 99%

Homogenization and Equivalent Beam Model for Fiber-Reinforced Tubular Profiles

2020

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The current work presents a study on hollow cylinder composite beams, since hollow cylinder cross-sections are one of the principal geometry in many engineering fields. In particular, the present study considers the use of these profiles for scaffold design in offshore engineering. Composite beams cannot be treated as isotropic ones due to couplings mainly present among traction, torsion, bending and shear coefficients. This research aims to present a simple approach to study composite beams as they behave like isotropic ones by removing most complexities related to composite material design (e.g., avoid the use of 2D and 3D finite element modeling). The work aims to obtain the stiffness matrix of the equivalent beam through an analytical approach which is valid for most of the laminated composite configurations present in engineering applications. The 3D Euler–Bernoulli beam theory is considered for obtaining the correspondent isotropic elastic coefficients. The outcomes show that negligible errors occur for some equivalent composite configurations by allowing designers to continue using commercial finite element codes that implement the classical isotropic beam model.

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Mechanical Behavior of Carbon/PEKK Thermoplastic Composite Tube Under Bending Load

Cited by 16 publications

References 11 publications

Enhancing resistance of poly(ether ketone ketone) to high‐temperature steam through crosslinking and crystallization control

Enhancing resistance of poly(ether ketone ketone) to high‐temperature steam through crosslinking and crystallization control

Similitude study on bending stiffness and behavior of composite tubes

Homogenization and Equivalent Beam Model for Fiber-Reinforced Tubular Profiles

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