Bonding of thermoplastic composite structures to metal structures

1995 ◽  
Vol 6 (2) ◽  
pp. 109
Keyword(s):  
Composite Structures ◽  
Thermoplastic Composite ◽  
Metal Structures

Numerical Simulation of Thermoplastic Composite Material by ANSYS

2011 ◽  
Vol 279 ◽  
pp. 181-185 ◽  
Author(s):  
Guo Hua Zhao ◽  
Qing Lian Shu ◽  
Bo Sheng Huang
Keyword(s):  
Numerical Simulation ◽  
Composite Material ◽  
Composite Structures ◽  
Material Model ◽  
General Purpose ◽  
Thermoplastic Composite ◽  
Finite Element Code ◽  
Peek Composite ◽  
Test Result ◽  
Good Agreement

This paper proposes a material model of AS4/PEEK, a typical thermoplastic composite material, for the general purpose finite element code—ANSYS, which can be used to predict the mechanical behavior of AS4/PEEK composite structures. The computational result using this model has a good agreement with the test result. This investigation can lay the foundation for the numerical simulation of thermoplastic composite structures.

Linear Two-Port Model of an Active Thermoplastic Composite Structure

2013 ◽  
Author(s):  
Anja Winkler ◽  
Uwe Marschner ◽  
Eric Starke ◽  
Niels Modler ◽  
Wolf-Joachim Fischer ◽  
...  
Keyword(s):  
Composite Structure ◽  
Manufacturing Process ◽  
Composite Structures ◽  
Matrix Material ◽  
Manufacturing Technology ◽  
Experimental Results ◽  
Thermoplastic Composite ◽  
Starting Point ◽  
Modal Behavior ◽  
Active Composite

This paper describes new active composite structures based on thermoplastic matrices which contain material homogeneous embedded piezoceramic modules. Starting point is the development of novel thermoplastic compatible piezoceramic modules, so called TPMs. By the utilization of the same matrix material for the composite structure and for the TPM carrier films, these modules afford an opportunity to become directly embedded into the component during its manufacturing process. In this context, the manufacturing technology of the TPMs and of the active composite structure is presented. Furthermore, selected test samples are investigated concerning their modal behavior. Based on the determined characteristics a linear two-port model is used for the reproduction of the experimental results.

Dual polymer bonding of thermoplastic composite structures

1991 ◽  
Vol 31 (7) ◽  
pp. 526-532 ◽  
Author(s):  
A. J. Smiley ◽  
A. Halbritter ◽  
F. N. Cogswell ◽  
P. J. Meakin
Keyword(s):  
Composite Structures ◽  
Thermoplastic Composite

scholarly journals Process Chain Modelling and Analysis for the High-Volume Production of Thermoplastic Composites with Embedded Piezoceramic Modules

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
W. Hufenbach ◽  
M. Gude ◽  
N. Modler ◽  
Th. Heber ◽  
A. Winkler ◽  
...  
Keyword(s):  
Composite Structures ◽  
Continuous Process ◽  
High Volume ◽  
Thermoplastic Composite ◽  
Thermoplastic Composites ◽  
Process Chain ◽  
Widespread Application ◽  
High Volume Production ◽  
Volume Production ◽  
Functional Components

Active composite structures based on thermoplastic matrix systems are highly suited to applications in lightweight structures ready for series production. The integration of additional functional components such as material-embedded piezoceramic actuators and sensors and an electronic network facilitates the targeted control and manipulation of structural behaviour. The current delay in the widespread application of such adaptive structures is primarily attributable to a lack of appropriate manufacturing technologies. It is against this backdrop that this paper contributes to the development of a novel manufacturing process chain characterized by robustness and efficiency and based on hot-pressing techniques tailored to specific materials and actuators. Special consideration is given to detailed process chain modelling and analysis focusing on interactions between technical and technological aspects. The development of a continuous process chain by means of the analysis of parameter influences is described. In conclusion, the use of parameter manipulation to successfully realize a unique manufacturing line designed for the high-volume production of adaptive thermoplastic composite structures is demonstrated.

Experimental Investigations on Integrated Conductor Paths in Fiber-Reinforced Thermoplastic Composite Structures

2017 ◽  
Vol 742 ◽  
pp. 793-799
Author(s):  
Tony Weber ◽  
Anja Winkler ◽  
Maik Gude
Keyword(s):  
Composite Structures ◽  
Construction Material ◽  
Functional Integration ◽  
Thermoplastic Composite ◽  
Experimental Investigations ◽  
Film Material ◽  
Fiber Reinforced ◽  
Forming Process ◽  
Sensors And Actuators ◽  
Definition Of

By the benefit of functional integration the advantages of fiber reinforced plastics (FRP) as construction material can be increased due to the possibilities of integrating sensors and actuators. In Regard to the layer-by-layer definition of the wall thickness, this class of material offers a high potential for the integration of additional smart elements within the stacking and forming process. In addition to the actual integration methods of sensors or actuators, the electrical signal transmission and contacting is of great importance for smart structures. Various approaches can be followed. On the one hand, the conductor path can be defined by means of a wire and, on the other hand, the definition of conductor paths can be accomplished by functionalized films (by means of printing technology). Within this paper, experimental investigations are intended to demonstrate the suitability of screen-printed conductor paths for the press-technical transformation of FRP structures. In addition to the variation of the screen printing material and the film material, for a material-homogeneous integration, an evaluation of a corresponding selection of materials takes place with respect to the stresses derived from the deformation-technical boundary conditions.

Using POD to Characterise Panel Backside Heat Losses

2014 ◽  
Author(s):  
A. F. Emery
Keyword(s):  
Composite Structures ◽  
Heat Losses ◽  
Short Paper ◽  
Alternative Analysis ◽  
Temperature Variations ◽  
Metal Structures ◽  
Repair Site ◽  
Heating And Cooling ◽  
High Thermal Resistance ◽  
Proper Orthogonal

Repairing composite structures requires heating the repair site to a specific temperature and holding it at this temperature for a length of time. This is usually accomplished by placing a heating blanket over the repair site or by thermally radiating it. In either case, significant heat conduction occurs through the composite repair zone resulting in spatial variations in temperature. In general, one has access only to one side of the structure and is not aware of the specific nature of conditions on the backside. It is not uncommon for the backside structure in the neighborhood of the repair site to be such that the heat transfer is inhibited by pockets of trapped air or increased by metal structures. If the applied heat can be spatially controlled it is possible to eliminate temperature variations in the repair zone. This short paper describes attempts to estimate backside heat losses, or at a minimum to detect the presence/magnitude of these losses. Early attempts to estimate these losses by parameter estimation proved not to be adequate. The test was modified to include a backside heat sink, but thermocouple measurements suggested that there was negligible effect. The use of proper orthogonal decomposition of thermographic images taken during heating and cooling was considered as an alternative analysis. The POD indicated that there was no substantial heat loss to the sink because of the high thermal resistance of the panel. Given this finding, it appears that eliminating spatial temperature variations can only be done by active control of the heat source.

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