Experimental Analysis of Prepreg Tack
O. Dubois,J.-B. Le Cam,A. Béakou +2 more
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In this paper, a probe tack test apparatus is designed to characterize the tack of carbon-epoxy prepreg and the results show that the response of pure resin is similar to that of viscous silicon oil.Abstract:
A probe tack test apparatus is designed to characterize the tack of carbon-epoxy prepreg. Tests are performed on both pure resin and prepreg. The maximum debonding force seems to be a relevant measure of tack. First, results show that the response of pure resin is similar to that of viscous silicon oil. Second, the shape of the response curve obtained for prepreg beyond the maximum value of the debonding force is mainly due to structural effects. Third, the influence of contact force, contact time, debonding rate, probe temperature and ageing conditions on the prepreg tack is investigated in relation with physical phenomena involved in the debonding phase.read more
Citations
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The engineering aspects of automated prepreg layup: History, present and future
TL;DR: Automated Tape Laying (ATL) and Automated Fibre Placement (AFP) are the two main technologies used to automate the layup of prepreg as mentioned in this paper, with an emphasis on past issues in application and capability as well as their solution.
Journal ArticleDOI
Modelling slit tape buckling during automated prepreg manufacturing: A local approach
TL;DR: In this paper, the buckling of slit tape in the Automated Fibre Placement process for a circular fibre path using an analytical approach that accounts for prepreg tack and stress distribution is investigated.
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The experimental determination of prepreg tack and dynamic stiffness
TL;DR: In this paper, a new peel test was developed which quantifies the tack and dynamic stiffness of uncured prepregs, which is designed to simulate the automated tape lay-up (ATL) and automated fibre placement (AFP) processes.
Journal ArticleDOI
An experimental and simulative study on the defects appeared during tow steering in automated fiber placement
Nima Bakhshi,Mehdi Hojjati +1 more
TL;DR: In this article, an extensive experimental investigation using various process parameters and steering radii is performed to gain a deeper understanding of the defect formation process during tow steering in Automated Fiber Placement (AFP).
Journal ArticleDOI
Time–temperature equivalence in the tack and dynamic stiffness of polymer prepreg and its application to automated composites manufacturing
TL;DR: In this paper, a peel test designed to simulate the automated tape lay-up (ATL) process was used to measure tack and dynamic stiffness of newly developed ATL prepregs.
References
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Fred W. Billmeyer,Yuan Chen +1 more
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Influence of Molecular Features on the Tackiness of Acrylic Polymer Melts
TL;DR: In this paper, the effects of molecular weight and acrylic acid content on the adhesive properties of a series of monodisperse poly(n-butyl acrylate) materials have been investigated.
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Liliane Léger,Costantino Creton +1 more
TL;DR: The adhesion mechanisms at soft polymer interfaces are analyzed with a special emphasis first on the role of connector molecules, that is, polymer chains bound to the interface and which transmit stress through a stretching and extraction mechanism, and second on the necessary relay taken by additional dissipation mechanisms acting at larger scales.
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