Application of iterative reconstruction algorithms to mitigate CT-artefacts when measuring fiber reinforced polymer materials

Polymer ◽  
2019 ◽  
Vol 177 ◽  
pp. 120-130 ◽  
Author(s):  
Arnold Wilbers ◽  
Ander Biguri ◽  
Jennifer Schillings ◽  
Joachim Loos
Keyword(s):  
Iterative Reconstruction ◽  
Polymer Materials ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reconstruction Algorithms ◽  
Reinforced Polymer

scholarly journals A STATE OF THE ART REVIEW OF EFFICIENCY THE FLEXURAL STRENGTHENING OF REINFORCED CONCRETE BEAM BY USING FIBER REINFORCEMENT POLYMER MATERIALS

2021 ◽  
Vol 25 (Special) ◽  
pp. 4-88-4-99
Author(s):  
Wissam S. Abdullah ◽  
◽  
Hassan F. Hassan ◽  
Keyword(s):  
Reinforced Concrete ◽  
Reinforced Concrete Beam ◽  
Polymer Materials ◽  
Fiber Reinforced Polymer ◽  
Maintenance Cost ◽  
Rc Beam ◽  
Fiber Reinforced ◽  
Construction Time ◽  
Near Surface ◽  
Reinforced Polymer

Fiber Reinforced Polymer (FRP) materials are commonly used in civil engineering construction purposes owing their advantages like lightweight, corrosion resistance, high strength, various types available, ease of installation, lower installation costs, shorter construction time and lower maintenance cost [1]. Over the last few decades, flexural Reinforced Concrete (RC) beams reinforcement and maintenance with Near-Surface Mounted (NSM) or Externally Bonded Reinforcement (EBR) Fiber Reinforced Polymer has gained considerable interest and obtained widespread acceptance among civil engineers [2]. This paper reviews previous research on RC beam strengthening by NSM or EBR FRP technique and show the effects of FRP strengthening on flexural strength of RC beam.

scholarly journals Analysis of lightning ablation damage performance of glass fiber reinforced polymer materials

2021 ◽  
Vol 44 (1) ◽  
Author(s):  
Zezhong Shan ◽  
Minghui Tian ◽  
Xiang Lu
Keyword(s):  
Glass Fiber ◽  
Polymer Materials ◽  
Fiber Reinforced Polymer ◽  
Lightning Protection ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced Polymer ◽  
Protection Efficiency ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced ◽  
Polymer Laminates

AbstractGlass fiber-reinforced polymer materials have been effectively used in civil aviation aircraft, but due to low electrical conductivity, a large area of ablation damage will occur after lightning strikes, which greatly threatens the safety of civil aircrafts. Based on this, the coupled electrical-thermal finite element analysis model for a lightning ablation damage of glass fiber reinforced polymer materials is established, and the analysis results are compared with the experiment, and the error rate is 1.26%, which verifies the accuracy of the model. In addition, different influencing factors are analyzed to study the lightning protection characteristics of glass fiber reinforced polymer on carbon fiber-reinforced polymer laminates. The results show that glass fiber reinforced polymer materials have low lightning resistance, but they can effectively reduce the lightning ablation damage area of carbon fiber reinforced polymer laminates under the joint protection of them and aluminum coating. However, they have different protective effects on different protective forms of laminates. Among them, the thickness of aluminum coating has a higher impact on the lightning protection efficiency of full spraying aluminum protective laminates, and the thickness of glass fiber reinforced polymer materials has a higher impact on the lightning protection efficiency of local spraying aluminum protective laminates.

Performance of FRP confined and unconfined engineered cementitious composite exposed to seawater

2019 ◽  
Vol 53 (28-30) ◽  
pp. 4285-4304 ◽  
Author(s):  
Alaa Mohammedameen ◽  
Abdulkadir Çevik ◽  
Radhwan Alzeebaree ◽  
Anıl Niş ◽  
Mehmet Eren Gülşan
Keyword(s):  
Mechanical Behaviour ◽  
Mechanical Performance ◽  
Basalt Fiber ◽  
Polymer Materials ◽  
Fiber Reinforced Polymer ◽  
Cementitious Composite ◽  
Fiber Reinforced ◽  
Engineered Cementitious Composite ◽  
Reinforced Polymer ◽  
Seawater Environment

Conventional concrete suffers from brittle failures under mechanical behaviour, and lack of ductility results in the loss of human life and property in earthquake zones. Therefore, the degree of ductility becomes significant in seismic regions. This paper investigates the influence of poly-vinyl alcohol fibers, basalt fiber-reinforced polymer (BFRP) and carbon fiber-reinforced polymer (CFRP) fabrics on the ductility and mechanical performance of low (LCFA) and high (HCFA) calcium fly ash-based engineered cementitious composite concrete. The study also focuses on the mechanical behaviour of the CFRP and BFRP materials using different matrix types exposed to 3.5% seawater environment. Cyclic loading and scanning electron microscopy observations were also performed to see the effect of chloride attack on mechanical performance and ductility of the specimens. In addition, utilization of CFRP and BFRP fabrics as a retrofit material is also evaluated. Results indicated that the degree of ductility and mechanical performance were found to be superior for the CFRP-engineered cementitious composite hybrid specimens under ambient environment, while LCFA-CFRP hybrid specimens showed better performance under seawater environment. The effect of matrix type was also found significant when engineered cementitious composite is used together with fiber-reinforced polymer materials. In addition, both fiber-reinforced polymer materials can be used as a retrofit material under seawater environment.

Vegetable Fiber-Reinforced Polymer Composites: Fundamentals, Mechanical Properties and Applications

2017 ◽  
Vol 14 ◽  
pp. 1-20 ◽  
Author(s):  
R.Q. da Costa Melo ◽  
A.G. Barbosa de Lima
Keyword(s):  
Mechanical Properties ◽  
Polymer Composites ◽  
Environmental Benefits ◽  
Polymer Materials ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Industrial Sectors ◽  
Reinforced Polymer ◽  
Fiber Reinforced Polymer Composites ◽  
Vegetable Fiber

This chapter provides information in the area of vegetable fiber-reinforced polymer composites. It includes discussion about definition and classification of the composites and their constituents, composite manufacturing process and current application in different industrial sectors. Factors affecting the fiber/matrix interfacial adhesion and physic-chemical and mechanical properties of vegetable fiber-reinforced polymer composites are also revealed. The aim is to show for both academy and industry the viability on the use of vegetable fibers as reinforcement in polymer materials, because it offers many advantages and high potential in terms of unlimited availability, lightweight, reasonable cost, acceptable mechanical properties, and socio-economic and environmental benefits.

Concrete–fiber-reinforced polymer interfacial bond monitoring with self-triggering sensors

2018 ◽  
Vol 29 (12) ◽  
pp. 2557-2569
Author(s):  
Kunal Joshi ◽  
Marquese Pollard ◽  
Andrea Chiari ◽  
Tarik Dickens
Keyword(s):  
Bond Strength ◽  
Fiber Optic ◽  
Failure Detection ◽  
Polymer Materials ◽  
Fiber Reinforced Polymer ◽  
Fiber Optic Sensor ◽  
Fiber Reinforced Polymers ◽  
Sensor Technology ◽  
Fiber Reinforced ◽  
Reinforced Polymer

External bonding with fiber-reinforced polymers is currently one of the most popular technologies for rehabilitation of concrete structures. However, the effectiveness of the technology largely depends on the strength of the bond between the fiber-reinforced polymer laminate and the concrete substrate. This article provides a system to monitor the loss of bond between the fiber-reinforced polymer laminate and the concrete. Fiber optic sensors are broadly accepted as a structural health monitoring device for fiber-reinforced polymer materials by integrating the sensors into the host material. A recent development in fiber optic sensor technology is the mechanoluminescence-based optoelectronic sensors. Concrete beams strengthened with multifunctional fiber-reinforced polymer laminates were tested in shear using these sensors to evaluate the bond strength of the composite system. The sensors showed response to shear stress transfer in the adhesive layer which was observed to be as low as 2 MPa. The inclusion of sensors does not affect the bond strength (3.35 MPa), for both beams with sensors and without sensors. Real-time failure detection of fiber-reinforced polymer–strengthened beams was successfully achieved in this study. In future, the scheme aims at providing a tool to reduce the response time and decision making involved in the maintenance of deficient structures.

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