Stress-State Effects on the Viscoelastic Response of Polyphenylene Sulfide (PPS) Based Thermoplastic Composites

2008 ◽  
pp. 154-154-29 ◽  
Author(s):  
FA Myers
Keyword(s):  
Stress State ◽  
Polyphenylene Sulfide ◽  
Thermoplastic Composites ◽  
Viscoelastic Response

Process–structure relationship of carbon/ polyphenylene sulfide commingled hybrid yarns used for thermoplastic composites

2015 ◽  
Vol 45 (6) ◽  
pp. 1661-1673 ◽  
Author(s):  
Jens Schäfer ◽  
Oleg Stolyarov ◽  
Rana Ali ◽  
Christoph Greb ◽  
Gunnar Seide ◽  
...  
Keyword(s):  
Polyphenylene Sulfide ◽  
Thermoplastic Composites ◽  
Structure Relationship ◽  
Relationship Of ◽  
Process Structure

scholarly journals Characterization of multilayered carbon-fiber–reinforced thermoplastic composites for assembly process

2018 ◽  
Vol 32 (5) ◽  
pp. 673-689 ◽  
Author(s):  
Ngoc-Hung Vu ◽  
Xuan-Tan Pham ◽  
Vincent François ◽  
Jean-Christophe Cuillière
Keyword(s):  
Carbon Fiber ◽  
Research Work ◽  
Polyphenylene Sulfide ◽  
Thermoplastic Composites ◽  
Assembly Process ◽  
Fiber Reinforced ◽  
Material Models ◽  
Carbon Fiber Reinforced ◽  
Sheet Deformation

The aim of this research work is to characterize the mechanical behavior of multilayered carbon-fiber–reinforced polyphenylene sulfide composites with the application to assembly process of nonrigid parts. Two anisotropic hyperelastic material models were investigated and implemented in Abaqus as a user-defined material. An inverse characterization method was applied to identify the parameters of these material models. Finite element simulations at finite strains of a flexible composite sheet were carried out. Numerical results of sheet deformation were compared with the experimental results in order to evaluate the appropriateness of the material models developed for this application.

scholarly journals The Out-of-Plane Compression Response of Woven Thermoplastic Composites: Effects of Strain Rates and Temperature

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 264
Author(s):  
Shiyu Wang ◽  
Lihua Wen ◽  
Jinyou Xiao ◽  
Ming Lei ◽  
Xiao Hou ◽  
...  
Keyword(s):  
Strain Rate ◽  
Elevated Temperatures ◽  
Split Hopkinson Pressure Bar ◽  
Dynamic Properties ◽  
Dynamic Compression ◽  
Polyphenylene Sulfide ◽  
Thermoplastic Composites ◽  
Strain Rates ◽  
Wide Range ◽  
Out Of Plane

The dynamic mechanical response of high-performance thermoplastic composites over a wide range of strain rates is a challenging research topic for extreme environmental survivability in the field of aerospace engineering. This paper investigates the evolution of the dynamic properties of woven thermoplastic composites with strain rate and damage process at elevated temperatures. Out-of-plane dynamic-compression tests of glass-fiber (GF)- and carbon-fiber (CF)-reinforced polyphenylene sulfide (PPS) composites were performed using a split Hopkinson pressure bar (SHPB). Results showed that thermoplastic composites possess strain-rate strengthening effects and high-temperature weakening dependence. GF/PPS and CF/PPS composites had the same strain-rate sensitivity (SRS) below the threshold strain rate. The softening of the matrix at elevated temperatures decreased the modulus but had little effect on strength. Some empirical formulations, including strain-rate and temperature effects, are proposed for more accurately predicting the out-of-plane dynamic-compression behavior of thermoplastic composites. Lastly, the final failure of the specimens was examined by scanning electron microscopy (SEM) to explore potential failure mechanisms, such as fiber-bundle shear fracture at high strain rates and stretch break at elevated temperatures.

STUDY ON COOLING RATE-DEPENDENT MECHANICAL PROPERTIES OF THERMOPLASTIC COMPOSITES

2021 ◽  
Author(s):  
RYO HIGUCHI ◽  
SOTA OSHIMA ◽  
SHU MINAKUCHI ◽  
TOMOHIRO YOKOZEKI ◽  
TAKAHIRA AOKI
Keyword(s):  
Mechanical Properties ◽  
Cooling Rate ◽  
Polyphenylene Sulfide ◽  
Constitutive Law ◽  
Thermoplastic Composites ◽  
Plastic Behavior ◽  
Thermoplastic Resin ◽  
Rate Dependent ◽  
Reinforced Thermoplastics ◽  
Fiber Reinforced Thermoplastics

This study investigates the effect of solidification conditions on the crystallization behaviors and mechanical properties of thermoplastic resin and carbon fiber reinforced thermoplastics (CFRTP). In particular, the crystallinity, elastic modulus, plastic behavior, strength, and fracture toughness were investigated in Polyphenylene Sulfide (PPS) and CF/PPS manufactured by different cooling rates. Based on experimental results, the cooling-rate-dependent elasto-plastic constitutive law of resin was developed empirically. Finally, the homogenized simulations of CF/PPS were conducted using the developed empirical model, and predicted results were compared with experiments.

Determination of thermal degradation for high-performance thermoplastic composites manufactured by laser-assisted automated fibre placement

2021 ◽  
pp. 095400832110446
Author(s):  
Dacheng Zhao ◽  
Weiping Liu ◽  
Guangquan Yue ◽  
Qinghua Song ◽  
Jiping Chen ◽  
...  
Keyword(s):  
Kinetic Model ◽  
Thermal Degradation ◽  
Laser Irradiation ◽  
High Performance ◽  
Irradiation Temperature ◽  
Polyphenylene Sulfide ◽  
Thermoplastic Composites ◽  
Resin Matrix ◽  
Degradation Kinetic

In in situ consolidation of thermoplastic composites by laser-assisted automated fibre placement (AFP), high laser irradiation temperature can improve the fluidity of the resin matrix, which usually enhances the performances of composites. However, it leads to a tendency for thermal degradation as the resin matrix of the composites is exposed to high temperatures for a long time. The thermal degradation behaviours of continuous carbon fibre (CF)-reinforced polyphenylene sulfide (PPS) composites during in situ consolidation by laser-assisted AFP were studied. A thermogravimetric analysis shows that the thermal degradation of CF/PPS composites is quite complex, with multi-step reactions. The thermal degradation of the composites was further analysed via kinetic methods. A thermal degradation kinetic model of the resin matrix was obtained and verified. According to the kinetic model, the thermal degradation of the composites under different placement conditions was predicted. The results were confirmed by Fourier-transform infrared spectroscopy and scanning electron microscopy. With the combination of the kinetic model, AFP in situ consolidation, and characterisation techniques, processing parameters such as laser irradiation temperature and placement speed can be adjusted and optimised.

scholarly journals Annealing Effects on the Crystallinity of Carbon Fiber-Reinforced Polyetheretherketone and Polyohenylene Laminate Composites Manufactured by Laser Automatic Tape Placement

2020 ◽  
Vol 26 (3) ◽  
pp. 308-316
Author(s):  
Svetlana RISTESKA ◽  
Anka T. PETKOSKA ◽  
Samoil SAMAK ◽  
Marian DRIENOVSKY
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Processing Parameters ◽  
Polyphenylene Sulfide ◽  
Thermoplastic Composites ◽  
Void Content ◽  
Angle Of Incidence ◽  
Annealing Step

In situ consolidation of thermoplastic composites by Automated Tape Placement (ATP) is challenging. High quality ATP grade pre-preg material and tape head equipped with an efficient heat sources like lasers offer an opportunity towards high deposition rates and improved mechanical properties of composite materials. In this study uni-directional carbon fiber/ polyphenylene sulfide (UD tape prepreg CF/PPS), carbon fiber/polyetheretherketone (UD tape prepreg CF/PEEK) as well as blend of carbon fiber/polyetheretherketone/polyphenylene sulfide (UD tapes prepregs CF/PEEK/PPS) laminates are compared in terms of their properties after beeing processed by ATP technology. CF/PPS, CF/PEEK and blend CF/PPS/PEEK laminate specimens were processed using in-situ laser-assisted ATP (LATP) process. LATP processing parameters used in this study were chosen based on a preliminary trials; the results provide a basis for refinement of these parameters and prepreg material with an optimal and balanced set of final mechanical properties. This study showed an attempt how to manage the processing parameters for LATP process and to obtain composite materials with tailored properties. The process for production of thermoplastic plates with LATP head in general is a process that is governed by many parameters such as: laser power, angle of incidence, roller pressure and temperature, placement speed, tool temperature, then types of the roller material and the tool material. These parameters are not subject of discussing in this paper; they are kept constant, and the goal of the paper is to manage the crystallinity level within the composite thermoplastic material during annealing step at different temperatures after LATP process. Also, the void content during the production process could be controlled. More particularly, the authors showed that composites based on PPS matrix manufactured with LATP process possess higher flexural strength, with less void content compared to samples based on PEEK matrix. These samples showed also higher crystallinity after annealing step.

Intraply Shearing Characterization of Thermoplastic Composite Materials in Thermoforming Processes

2012 ◽  
Vol 504-506 ◽  
pp. 243-248 ◽  
Author(s):  
Peng Wang ◽  
Nahiene Hamila ◽  
Philippe Boisse
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Shear Behavior ◽  
Mechanical Analysis ◽  
Polyphenylene Sulfide ◽  
Thermoplastic Composite ◽  
Thermoplastic Composites ◽  
Thermoplastic Resin ◽  
Plane Shear ◽  
Significant Difference

The Continuous Fibre Reinforcements and Thermoplastic resin (CFRTP) are widely employed in the prepreg processes. Currently, the most used thermoplastic resins in aeronautics are PPS (polyphenylene sulfide) and PEEK (Polyetheretherketone). They present many advantages on their mechanical properties. However, these mechanical properties depend strongly upon the thermoforming conditions, especially the intraply shearing. In order to improve and complete the understanding about the in-plane shear behavior of thermoplastic composite materials in their forming processes, the thermo-mechanical analysis of PPS/carbon and PEEK/carbon commingled fabrics at different forming temperatures are performed by using the bias-extension tests. The experimental data leads to significant difference on the in-plane shear behavior under different temperature, as well as the wrinkles can be noted in certain thermoforming conditions. Therefore, in order to predict the feasible forming conditions and optimize the important forming parameters of the thermoplastic composites, the in-plan shear behaviors in function of temperature will be integrated into our numerical model to carry out the numerical simulations of thermoforming processes.

Sign in / Sign up

Export Citation Format

Share Document