Influence of the automotive paint shop on mechanical properties of continuous fibre-reinforced thermoplastics

2019 ◽  
Vol 208 ◽  
pp. 557-565 ◽  
Author(s):  
T. Grätzl ◽  
Y. van Dijk ◽  
N. Schramm ◽  
L. Kroll
Keyword(s):  
Mechanical Properties ◽  
Paint Shop ◽  
Continuous Fibre ◽  
Automotive Paint ◽  
Reinforced Thermoplastics

Modelling the deformation of continuous fibre-reinforced thermoplastics subjected to hygrothermal loading

2018 ◽  
Vol 37 (20) ◽  
pp. 1227-1245 ◽  
Author(s):  
Thomas Grätzl ◽  
Manuel Hille ◽  
Norbert Schramm ◽  
Lothar Kroll
Keyword(s):  
Deformation Behaviour ◽  
Moisture Distribution ◽  
Temperature Dependent ◽  
Continuous Fibre ◽  
Chemical Effects ◽  
Automotive Paint ◽  
Laminate Theory ◽  
Pass Through ◽  
Reinforced Thermoplastics ◽  
Straightforward Approach

For the application of continuous fibre-reinforced thermoplastics in car body structures it has to be ensured that they can pass through the automotive paint shop. There are substantial chemical, hygroscopic and thermal impacts throughout this process that can affect the shape of such components. The aim of this study is to model the deformation behaviour of continuous fibre-reinforced thermoplastics under hygrothermal loading. Relaxation tests were performed to assess temperature-dependent and viscoelastic behaviour. Input parameters for temperature and moisture distribution were determined experimentally and computed using finite difference method. A straightforward approach based on classical laminate theory is presented that comprises anisotropic viscoelasticity as well as hygroscopic, thermal and polymer-chemical effects. The introduced phenomenological model was successfully used to describe the deformation of five different laminate layups both dry and fully saturated with moisture.

BiDrac Industry 4.0 framework: Application to an Automotive Paint Shop Process

2021 ◽  
Vol 109 ◽  
pp. 104757
Author(s):  
Elma Sanz ◽  
Joaquim Blesa ◽  
Vicenç Puig
Keyword(s):  
Industry 4.0 ◽  
Paint Shop ◽  
Automotive Paint

Effect of CNT Grafting on Carbon Fibers on Impact Properties of CFRTP Laminate

2018 ◽  
Vol 774 ◽  
pp. 410-415 ◽  
Author(s):  
Kazuto Tanaka ◽  
Ken Uzumasa ◽  
Tsutao Katayama
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Carbon Fibers ◽  
Interfacial Strength ◽  
Fiber Surface ◽  
Impact Properties ◽  
Specific Strength ◽  
Out Of Plane ◽  
Reinforced Thermoplastics ◽  
The Impact

Carbon fiber reinforced thermoplastics (CFRTP) are expected to be used as a structural material for aircraft and automobiles not only for their mechanical properties such as high specific strength and high specific rigidity but also for their high recyclability and short molding time. Generally, in a composite material having a laminated structure, interlaminar delamination is often caused by an out-of-plane impact, so the interlayer property plays an important role in the mechanical properties. It has been reported that the fiber/matrix interfacial strength increases by grafting carbon nanotubes (CNT) on the carbon fiber surface. In this study, CNT grafted carbon fibers were used for reinforcement of CFRTP laminate for the improvement of impact properties of CFRTP laminates. The impact absorbed energy of the CFRTP laminate using CNT grafted carbon fibers as reinforcing fiber was higher than that using untreated CF.

Residual mechanical properties of carbon fibre reinforced thermoplastics with thin-ply prepreg after simulated lightning strike

2017 ◽  
Vol 101 ◽  
pp. 185-194 ◽  
Author(s):  
Shinichiro Yamashita ◽  
Yoshiyasu Hirano ◽  
Takeo Sonehara ◽  
Jun Takahashi ◽  
Kazumasa Kawabe ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibre ◽  
Lightning Strike ◽  
Residual Mechanical Properties ◽  
Reinforced Thermoplastics

The influence of compatibilizers on the structure and mechanical properties of lightweight reinforced thermoplastics

2016 ◽  
Vol 39 (7) ◽  
pp. 2212-2223
Author(s):  
Xun Fang ◽  
Chunyin Shen ◽  
Gance Dai
Keyword(s):  
Mechanical Properties ◽  
Reinforced Thermoplastics

Additively Manufactured Continuous Fibre-Reinforced Thermoplastics for Mechanisms Subjected to Predominant Inertial Load: A Case Study

2020 ◽  
Author(s):  
Luca Luzi ◽  
Giacomo Quercioli ◽  
Riccardo Pucci ◽  
Guido Bocchieri ◽  
Rocco Vertechy ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Topology Optimization ◽  
High Performance ◽  
Permanent Magnet Synchronous Motor ◽  
Three Dimensional ◽  
Direct Drive ◽  
Continuous Fibre ◽  
Mechanical Components ◽  
Reinforced Thermoplastics

Abstract In the last decade, the adoption of additive manufacturing technologies (AMT) (3D printing) has increased significantly in many fields of engineering, initially only for rapid prototyping and more recently also for the production of finished parts. With respect to the long-established material subtractive technologies (MST), AMT is capable to overcome several limitations related to the shape realization of high-performance mechanical components such as those conceived via topology optimization and generative design approaches. In the field of structures and mechanisms, a major advantage of AMT over MST is that, for the same loading and constraining conditions (including kinematic and overall encumbrance), it enables the realization of mechanical components with similar stiffness but smaller volume (thus smaller weight, density being equal). Recently, the potentialities of AMT have also been increased by the introduction of the fuse filament deposition modeling (FDM) of continuous fibre-reinforced thermoplastics (CFRT), which combines the ease of processing of plastic AMT with the strength and specific modulus of the printed components that are comparable to those attainable via metallic AMT. In this context, the present paper investigates the potentialities of FDM-CFRT for the realization of mechanisms subjected to predominant inertial loads such as those found in automated packaging machinery. As a case study a Stephenson six-bar linkage powered in direct drive by a permanent magnet synchronous motor is considered. Starting from an existing mechanism realized in aluminum alloy with traditional MST, a newer version to be realized with FDM-CFRT has been conceived by keeping the kinematics fixed and by redesigning the links via three-dimensional topology optimization. To provide a fair comparison with the more traditional design/manufacturing approach, size optimization of the original mechanism made in aluminum alloy has also been performed. Comparison of the two versions of the mechanism highlights the superior performances of the one manufactured via FDM-CFRT in terms of weight, motor torque requirements and motion precision.

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