The Study of Different Area Weight of Fibers as Ablative Polymer-Based Composite for Solid Rocket Motor

2018 ◽  
Vol 783 ◽  
pp. 56-61
Author(s):  
Phimraphas Ngamsantivongsa ◽  
S. Boonthalarath ◽  
B. Wong-Ek ◽  
S. Nuanklai ◽  
T. Kanasittiboon ◽  
...  
Keyword(s):  
High Performance ◽  
General Term ◽  
Resin Matrix ◽  
Fiber Reinforced ◽  
Solid Rocket Motor ◽  
Reinforced Plastics ◽  
Heating Source ◽  
Ablation Resistance ◽  
Fiber Reinforced Plastics ◽  
Solid Rocket

High performance composites are becoming progressively significant in the aerospace industry for severe temperature. Fiber Reinforced Plastics (FRP) is a general term for composite materials or parts that consist of a resin matrix containing reinforcing fiber such as glass or fiber with more strength or stiffness than the resin. FRP is mostly used to denote glass fiber-reinforced plastics. In this study, the test composites were obtained from a phenolic resin (PR) with different area weight of fibers for comparing the ablation resistance using the hot compression molding technique. The ablation performance of the composites was investigated under an oxy-acetylene torch. An oxyacetylene torch, providing temperatures above 2300 °C, was chosen as the heating source. Moreover, the physical properties of the composites were determined by using standard experimental methods. These experimental results indicated that the fabricated composites with greater area weight of fibers exhibited outstanding mechanical properties and excellent ablation resistance. The overall experimental characteristics of the PR/EWR600 composites meet most of the necessary high temperature application criteria.

Experimental study on axial compression buckling of glass fiber reinforced plastics solid pole with circular cross-section

2022 ◽  
pp. 136943322110542
Author(s):  
Jianhui Si ◽  
Shixiong Qiu ◽  
Shuyang Feng ◽  
Jiebin Chen ◽  
Zhenshan Wang
Keyword(s):  
Bearing Capacity ◽  
Glass Fiber ◽  
Axial Compression ◽  
Slenderness Ratio ◽  
Circular Cross Section ◽  
Resin Matrix ◽  
Fiber Reinforced ◽  
Reinforced Plastics ◽  
Glass Fiber Reinforced ◽  
Fiber Reinforced Plastics

Glass fiber reinforced plastics are widely used in civil engineering because of their advantages such as light weight, high strength, good pollution resistance, and corrosion resistance. This study investigated the buckling bearing capacity, failure characteristics, and slenderness ratios of GFRP solid bars with circular cross-sections subjected to axial compression. A total of 18 specimens were categorized into six groups. The slenderness ratios ranged from 57 to 123. It was found from experiments that the instability mode of the specimens was extreme point instability, and a bearing capacity platform phenomenon was observed when overall lateral instability occurred. The failure mode was axial and transverse tearing failure of the material in the middle of the specimen. During buckling, the tensile side was transformed from the compression of the resin matrix to tension in the fibers. The elastic modulus of glass fiber was much lower than that of the resin matrix. After tension occurred, increased deformation led to a rapid increase in lateral bending, which resulted in the phenomenon of the bearing platform. At ultimate deformation, brittle failure of the specimen occurred. The buckling load of the specimen decreased sharply with an increase in the slenderness ratio, and stress ratios decreased from 34.95% to 6.73%. It is suggested that the slenderness ratio not exceed 80. Finally, based on experimental results, a practical method for calculating the stable bearing capacity of solid GFRP poles is proposed.

The Effect of Laser Focal Point Distance on Carbon Fiber Reinforced Plastics (CFRP) Cutting Performance

2013 ◽  
Vol 315 ◽  
pp. 778-782
Author(s):  
Norzaina Abdul Rahman ◽  
Wahab Saidin ◽  
Erween Abdul Rahim ◽  
Z. Mohid
Keyword(s):  
Carbon Fiber ◽  
High Performance ◽  
Focal Point ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Focal Position ◽  
Fiber Reinforced Plastics ◽  
Carbon Fiber Reinforced ◽  
Point Distance

Carbon fiber reinforced plastics (CFRP) composites as high performance material in aerospace industry. The application of laser technology to cut the CFRP shows promising advantages. The present study focuses the effect of focal point distance on the kerf width, HAZ, taper angle and morphology surfaces when cutting CFRP using laser process. Experiments have been conducted on CFRP and microstructure of the cross-section of the HAZ during cutting was analyzed. The results showed that focal position gave a significant effect on the cutting characteristic.

Development of shape memory alloy-based adaptive fiber-reinforced plastics by means of open reed weaving technology

2020 ◽  
Vol 39 (15-16) ◽  
pp. 563-571
Author(s):  
Moniruddoza Ashir ◽  
Chokri Cherif
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Woven Fabric ◽  
Resin Matrix ◽  
Fiber Reinforced ◽  
Force Transmission ◽  
Release Agent ◽  
Reinforced Plastics ◽  
Weaving Technology ◽  
Fiber Reinforced Plastics

The functionalization of fiber-reinforced plastics has been improved continuously in recent years in order to broaden their application potential. By using shape memory alloys in fiber-reinforced plastics, adaptive fiber-reinforced plastics can be developed, which in turn can change their shape depending on the activation of shape memory alloys. In order to ensure the proper force transmission from shape memory alloys to fiber-reinforced plastic, these shape memory alloys need to be integrated into the reinforcing fabric. Hence, this paper presents the application of open reed weaving technology for the development of functionalized preforms for adaptive fiber-reinforced plastics. For an optimized shape memory effect during their thermal induced activation, the shape memory alloys were coated with release agent and then integrated into the woven fabric by open reed weaving technology. The hinged width of functionalized preforms was varied from 50 mm to 150 mm. These preforms were infused by a thermosetting resin matrix system with a modifier. Subsequently, the electro-mechanical testing of adaptive fiber-reinforced plastics was executed. Results show that the maximum deformation of adaptive fiber-reinforced plastics was proportional to their hinged width.

scholarly journals High-performance machining of fiber-reinforced materials with hybrid ultrasonic-assisted cutting

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Andrea Stoll ◽  
Carlo Rüger ◽  
Katja Busch ◽  
Thomas Mäder ◽  
Burkhard Kranz
Keyword(s):  
High Performance ◽  
Joint Venture ◽  
The Novel ◽  
Fiber Reinforced ◽  
Reinforced Plastics ◽  
Process Characteristics ◽  
Fiber Reinforced Materials ◽  
Ultrasonic Assisted ◽  
Parameter Field ◽  
Fiber Reinforced Plastics

A main approach for sustainable and efficient products is the application of innovative materials like fiber-reinforced plastics. Despite the excellent properties, the machining requirements, especially the hard cutting conditions, restrain the wide application of these materials. Thus a major task is the realization of the required part qualities combined with efficient machining strategies. The project ULTRASPAN, a joint venture of partners from industry and research institutes funded by the BMBF, attends to this challenge. The goal is the development of new hybrid machining concepts and process technologies for enhanced cutting of composite materials with ultrasonic-assistance. Prior condition is the development of novel robust actuators. Therefore, prototypic actuators for longitudinal and torsional vibration systems are developed in the project. Besides the novel actuator concepts, the results of ultrasonic-assisted drilling (UAD) on composite parts are presented in this paper. Machining tests in drilling of fiber-reinforced plastics with the novel prototype actuator systems were performed. Focus of the investigation was the influence of the ultrasonic vibration support on the bore quality. The superimposition of drilling with ultrasonic vibrations influences the process characteristics and engagement of the cutting edge. Machining tests showed the potential to enhance the bore quality with UAD in a certain parameter field.

The Burst Tests and Theory Analysis of CFRP Pressure Vessel

2012 ◽  
Vol 249-250 ◽  
pp. 987-991
Author(s):  
Lin Zhang ◽  
Zhi Min Lu ◽  
Yu Long Zheng ◽  
Guang Liang Zhou
Keyword(s):  
Carbon Fiber ◽  
Pressure Vessel ◽  
Fiber Strength ◽  
Design Method ◽  
Resin Matrix ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics ◽  
Carbon Fiber Reinforced

8 pressure vessels of carbon fiber reinforced plastics (CFRP) have been manufactured with in the winding technology of same continuous carbon fiber–-amine system, new same flexible formula and same tension system. And the hydraulic bursting tests with the specimens were done in accordance with GB6058-85. The parameters of fiber strength, winding angle, geometric sizes and burst pressure were obtained by the tests. The theoretical analysis was done by conventional design method and reliability design method. The results show that: the theoretical calculating thickness of CFRP pressure vessel with by same parameters is thicker than practical thickness. This shows the performance of CFRP pressure vessel is related not only with fiber strength but also with material properties of resin matrix, tension and solidifying system of winding process. Because of CFRP (Carbon Fiber Reinforced Plastics) have many advantages which are high specific strength, high specific modulus, ablation resistance and low cost. Although the thing that composite materials have been substitutes for metal shell springs up soon, the application is much wide[1-6].

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