Vacuum Bagging of Thermosetting Composite and Metalbond Repairs

2018 ◽  
Author(s):  
Keyword(s):  
Thermosetting Composite

A Study on Process-Induced Warpage of Curing Mold of Composite Structures

2009 ◽  
Vol 79-82 ◽  
pp. 1173-1176
Author(s):  
Guang Quan Yue ◽  
Bo Ming Zhang ◽  
Shan Yi Du ◽  
Fu Hong Dai ◽  
Cheng Zhang ◽  
...  
Keyword(s):  
Thermal Load ◽  
Composite Structures ◽  
Three Dimensional ◽  
Element Model ◽  
Coupling Problem ◽  
Dimensional Precision ◽  
Numerical Predictions ◽  
Dimensional Finite Element ◽  
Thermosetting Composite ◽  
Three Dimensional Finite Element

Framed curing mold is subjected to an uneven thermal load, gravity force and the pressures from composite parts and auxiliary tools during autoclave processing of thermosetting composite structures. And those loads induce the warpage of framed-mold. The warpage of framed-mold during autoclave processing influences dimensional precision of composite parts. In the present work, a three-dimensional finite element model for prediction of the warpage of framed-mold during autoclave processing has been developed. This model solved the coupling problem between the deformation and the temperature distribution of framed-mold and allows analysis of all major identified deformation influencing factors. And numerical predictions compare quite well with experimental measurements. A parametric study was performed using FEM program to examine the effect of varying the thickness of framed-mold, the shape and the dimension of mold vents.

Numerical investigation of the effect of thermal gradients on curing performance of autoclaved laminates

2019 ◽  
Vol 54 (1) ◽  
pp. 127-138
Author(s):  
Qing Wang ◽  
Lingyun Wang ◽  
Weidong Zhu ◽  
Qiang Xu ◽  
Yinglin Ke
Keyword(s):  
Fluid Dynamics ◽  
Thermal Gradients ◽  
Curing Process ◽  
Degree Of Cure ◽  
Composite Part ◽  
Position Errors ◽  
Length Direction ◽  
Manufacturing Techniques ◽  
Thermosetting Composite ◽  
Numerical Approaches

Autoclave curing process is one of the most frequently used manufacturing techniques of thermosetting composite materials. An efficient curing process requires good understanding of the thermal behavior of molds and composites during autoclave processing. In this paper, the effect of thermal gradients on curing performance of laminates is investigated through numerical approaches. In the first section, a computational fluid dynamics–finite element method numerical model is established to simulate the temperature field and the process-induced deformation of laminates. Then, a curved composite part with two different structures of mold is introduced to exhibit different temperature and degree of cure gradients during the autoclave process. Furthermore, by analyzing the position errors of measurement points, the deformation of the composite parts in different molds is evaluated. The results suggested that more synchronous curing process and less deformation of the composite part can be achieved by reducing the thermal gradients. In this specific case of a curved part, the range of position errors in X direction (the length direction) is reduced by 86.9% with the redesigned mold.

Thermal, mechanical and rheological evolution during the processing of multilayer thermosetting composite structures

1994 ◽  
Vol 27 (1-2) ◽  
pp. 121-127 ◽  
Author(s):  
A. Apicella ◽  
M.A. Del Nobile ◽  
G. Mensitieri ◽  
M. Montanino ◽  
P.R. Stupak
Keyword(s):  
Composite Structures ◽  
Thermosetting Composite

A Model for Thermosetting Composite Pultrusion Process

1997 ◽  
Vol 31 (20) ◽  
pp. 2105-2122 ◽  
Author(s):  
Dae-Hwan Kim ◽  
Poong-Gyu Han ◽  
Geun-Ha Jin ◽  
Woo Il Lee
Keyword(s):  
Pultrusion Process ◽  
Thermosetting Composite

Development of spring-in angle during cure of a thermosetting composite

2005 ◽  
Vol 36 (12) ◽  
pp. 1700-1706 ◽  
Author(s):  
Nuri Ersoy ◽  
Kevin Potter ◽  
Michael R. Wisnom ◽  
Martin J. Clegg
Keyword(s):  
Thermosetting Composite
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