scholarly journals Estimation of Plastic Zone Size in Cracked Continuous Fiber-Reinforced Plastics.

2000 ◽  
Vol 49 (7) ◽  
pp. 793-798
Author(s):  
Hirohisa KIMACHI ◽  
Hiroshi TANAKA ◽  
Toshihiro SATOH ◽  
Keisuke TANAKA
Keyword(s):  
Plastic Zone ◽  
Plastic Zone Size ◽  
Zone Size ◽  
Fiber Reinforced ◽  
Continuous Fiber ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics

Continuous Fiber-Reinforced Plastics and Metal with Integrated Sensor

2016 ◽  
Vol 9 (S3) ◽  
pp. 12-17
Author(s):  
Jens Lotte ◽  
Alexander Schiebahn ◽  
Uwe Reisgen
Keyword(s):  
Fiber Reinforced ◽  
Continuous Fiber ◽  
Integrated Sensor ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics

Inverse Hybrid Laminate for Lightweight Applications

2020 ◽  
Vol 847 ◽  
pp. 40-45
Author(s):  
Tomasz Osiecki ◽  
Colin Gerstenberger ◽  
Tristan Timmel ◽  
Mariusz Frankiewicz ◽  
Robert Dziedzic ◽  
...  
Keyword(s):  
Complex Structures ◽  
Fiber Reinforced ◽  
Continuous Fiber ◽  
Metal Core ◽  
Reinforced Plastics ◽  
Thermoplastic Matrix ◽  
Recent Developments ◽  
Fiber Reinforced Plastics ◽  
Interlaminar Shear ◽  
Hybrid Laminate

Because of their high specific stiffness and strength, fiber reinforced plastics (FRP) are preferred lightweight materials. Recent developments show a growing industrial interest in the integration of thermoplastic FRP in complex structures for high volumes. However, there are still shortcomings for these materials concerning the insufficient energy absorption in case of failure and the limited opportunities available for the assembly with other components. Improvements in the crash performance can be achieved for instance with the selective reinforcement of the FRP structure with ductile metallic inserts. The present study shows the interlaminar shear strength and scanning electron microscope (SEM) samples of a novel load optimized hybrid composite consisting of a continuous fiber-reinforced thermoplastic matrix, in which a metal core is integrated.

scholarly journals Load-dependent path planning method for 3D printing of continuous fiber reinforced plastics

2021 ◽  
Vol 140 ◽  
pp. 106181
Author(s):  
Ting Wang ◽  
Nanya Li ◽  
Guido Link ◽  
John Jelonnek ◽  
Jürgen Fleischer ◽  
...  
Keyword(s):  
3D Printing ◽  
Path Planning ◽  
Planning Method ◽  
Fiber Reinforced ◽  
Continuous Fiber ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics

Development of Active Laminates and Composites

Aerospace ◽  
2006 ◽  
Author(s):  
Hiroshi Asanuma
Keyword(s):  
Coefficient Of Thermal Expansion ◽  
Fiber Type ◽  
Fiber Direction ◽  
Fiber Reinforced ◽  
Continuous Fiber ◽  
Fiber Layer ◽  
Reinforced Plastics ◽  
Kevlar Fiber ◽  
Discontinuous Fiber ◽  
Fiber Reinforced Plastics

The present paper describes development of active laminates and composites proposed by Asanuma. The active laminates were successfully made by hot-pressing of an aluminum plate as a high CTE (Coefficient of Thermal Expansion) material, a unidirectional CFRP (Carbon Fiber Reinforced Plastics) prepreg as a low CTE material and an electric resistance heater, and a KFRP (Kevlar Fiber Reinforced Plastics) prepreg as a low CTE material and an insulator between them. Curvature of the active laminate linearly changes only in the fiber direction as a function of temperature, and it was made into complicated forms and their actuation performances were successfully demonstrated. As a high temperature type active laminate, three types of SiC/Al composites, that is, a laminate of continuous-fiber layer and unreinforced one, that of discontinuous-fiber layer and unreinforced one, and that of continuous-fiber layer and discontinuous-fiber one were fabricated, and it became clear that all of the composites curve unidirectionally in the fiber direction, and the curvatures reproducibly change during thermal cycles between room temperature and 813 K. Tensile strength of the combination type is higher than that of the continuous-fiber type, and its curvature exists between the continuous-fiber type and the discontinuous-fiber type.

scholarly journals Structural Optimization of Locally Continuous Fiber-Reinforcements for Short Fiber-Reinforced Plastics

2021 ◽  
Vol 5 (5) ◽  
pp. 118
Author(s):  
Konstantin Mehl ◽  
Sebastian Schmeer ◽  
Nicole Motsch-Eichmann ◽  
Philipp Bauer ◽  
Ingolf Müller ◽  
...  
Keyword(s):  
Topology Optimization ◽  
Base Material ◽  
Optimization Methods ◽  
Short Fiber ◽  
Fiber Reinforced ◽  
Continuous Fiber ◽  
New Approach ◽  
Reinforced Plastics ◽  
Fiber Reinforcements ◽  
Fiber Reinforced Plastics

The integration of continuous fiber-reinforced structures into short or long fiber-reinforced plastics allows a significant increase in stiffness and strength. In order to make the best possible use of the high stiffness and strength of continuous fiber-reinforcements, they must be placed in the direction of load in the most stressed areas. A frequently used tool for identifying the most heavily loaded areas is topology optimization. Commercial topology optimization programs usually do not take into account the material properties associated with continuous fiber-reinforced hybrid structures. The anisotropy of the reinforcing material and the stiffness of the base material surrounding the reinforcement are not considered during topology optimization, but only in subsequent steps. Therefore in this publication, existing optimization methods for hybrid and anisotropic materials are combined to a new approach, which takes into account both the anisotropy of the continuous fiber-reinforcement and the stiffness of the base material. The results of the example calculations not only show an increased stiffness at the same material input but also a simplification of the resulting reinforcement structures, which allows more economical manufacturing.

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