1992
DOI: 10.1177/002199839202601602
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Manufacturing Process Models for Thermoplastic Composites

Abstract: Models were developed which simulate the processing of thermoplastic matrix composites. The models relate the applied temperature, pressure, speed, and time to the temperature, crystallinity, consolidation, interlaminar bonding, and residual stresses and strains inside the composite. The formulations follow the models proposed by Springer, Loos, and their coworkers for manufacturing plates in a press or in an autoclave, but were extended to include cylindrical geometries, variations in the applied temperatures… Show more

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Cited by 184 publications
(155 citation statements)
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“…Several models [10][11][12][13][14] were developed to study the intimate contact problem. It was first described by Dara and Loos, 10 assuming that the surface asperities are flattened through shear flow.…”
Section: Simulation Of the Heating And Consolidation Stepsmentioning
confidence: 99%
See 1 more Smart Citation
“…Several models [10][11][12][13][14] were developed to study the intimate contact problem. It was first described by Dara and Loos, 10 assuming that the surface asperities are flattened through shear flow.…”
Section: Simulation Of the Heating And Consolidation Stepsmentioning
confidence: 99%
“…It is the only dependency of the viscosity that is currently considered for the simulation of the tape placement process. [12][13][14]18 Polymeric melts show a non-Newtonian flow behavior, which means that the shear stress is not proportional to the shear rate. In most cases, they show a shear thinning behavior, which means that when the shear rate reaches a certain value the viscosity starts to decrease with increasing of the shear rate.…”
Section: Fundamentals Concerning the Melt Shear Viscosity Of Polymersmentioning
confidence: 99%
“…When two surfaces are brought together, the contact is limited to asperities. Sufficient temperature and pressure application allows the surfaces to deform into one another, a process known as intimate contact development [4,5]. Autohesion can only occur in regions of intimate contact, therefore the bond strength development process is a combination of both phenomena.…”
Section: Introductionmentioning
confidence: 99%
“…The consolidation roller then presses the molten surfaces together as they cool, resulting in a bond. The bonding process is a combination of the flattening of the asperities at the interface (intimate contact development [11][12][13]), and the diffusion of polymer chains across the interface (autohesion or healing [14][15][16]). Other physical processes occur simultaneously during the process such as changes in crystallinity [5,17,18], void content [9,19], residual stress [20,21] and degradation [22,23] -all of which are sensitive to the specific temperature history.…”
Section: Introductionmentioning
confidence: 99%