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Showing 1 to 20 of 51 for “"fiber reinforced polymers"”.
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Structural retrofitting using fiber reinforced polymers
Over the past decades, fiber reinforced polymers (FRP) have been widely used in the aeronautical and naval industries. Being more costly than conventional Civil Engineering materials such as steel or concrete, they have not been used on a large scale yet. However progress in understanding their …
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Experimental and computational micromechanical study of fiber-reinforced polymers
… de Hashin y Puck para el fallo de laminados. Fiber-reinforced polymers (FRPs) exhibit outstanding mechanical properties, ideal for their use in structural applications. Due to the high specific values of stiffness and strength, these composites are replacing conventional materials in …
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Optimum design of precast bridge systems prestressed with carbon fiber reinforced polymers
… of these advantageous properties, structures reinforced with composite materials are lighter and have longer service life than those reinforced with steel. On the other hand, the composite materials are very expensive as compared to steel. However, the severity of this problem can be minimized …
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The use of fiber reinforced polymers in the rehabilitation of beams, slabs, and columns
… the United States, especially those made of reinforced concrete, have been rapidly aging and are in dire need of repair. Given the circumstances it is only natural that new, more efficient technologies, such as fiber reinforced polymer (FRP) materials, emerge to solve this worldwide aging …
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Flexural Behavior of Laterally Damaged Full-Scale Bridge Girders Through the Use of Carbon Fiber Reinforced Polymers (CFRP)
… simulated impact damage and repaired with carbon fiber reinforced polymers (CFRP) materials. A total of five AASHTO type II bridge girders fabricated in the 1960’s were taken from an existing bridge, and tested at the Florida Department of Transportation FDOT structures lab in Tallahassee, …
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Development and Characterization of a Self-Stressing Shape Memory Alloy (SMA)-Fiber Reinforced Polymers (FRP) Composite Patch for Repair of Cracked Steel Structures
Prestressed carbon fiber reinforced polymer (CFRP) patches are emerging as a promising alternative to traditional methods to repair cracked steel structures and civil infrastructure. However, existing prestressing methods require the use of heavy and complex fixtures to apply prestressing forces, …
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Impact Resistance of Hybrid Metal-Organic Frameworks/Carbon Fibers Composites
<p>The increase in the use of carbon fiber-reinforced polymers (CFRPs) composites in the aerospace industry generated the need of improving the properties and capabilities of these composites by adding nano-reinforcements to the carbon fibers, also called hybrid fiber reinforced polymer composites. …
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Behavior of externally bonded fiber reinforced polymer systems for strengthening concrete girders in shear
… a concrete member. The use of externally bonded fiber reinforced polymers (FRP) is one such technique that has gained recent recognition for its high strength-to-weight ratio and simplicity of application. The development of this technique relies on experimental testing to better understand the …
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Analysis of a Carbon Fiber Reinforced Polymer Impact Attenuator for a Formula SAE Vehicle Using Finite Element Analysis
… and damage evolution model for laminated fiber reinforced polymers are explored. A series of tensile coupon finite element analyses are run to characterize the variables in the physical model as well as modeling techniques for using an explicit dynamic solver for a quasi-static problem. An …
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Detection of fiber fracture in Unidirectional Fiber Reinforced Composites using an In-Plane Fiber Optic Sensor
Fiber reinforced polymers (FRP) are an efficient and inexpensive method of repairing deteriorating infrastructure. FRP sheets can be applied to spalling bridge sections and columns to prevent further deterioration and increase stiffness. However, the effect of the environment on the long-term …
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Behavior of RC beams patch repaired and strengthened with FRP composites : a numerical study
Reinforced concrete (RC) beams get deteriorated and become deficient mainly due to corrosion of steel reinforcements, poor maintenance and design, earthquakes and aging. Patch repair and structural strengthening using fiber reinforced polymers (FRP) have been increasingly adopted all over the world …
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Feasibility Study Of Evaluating Durability Of Cfrp-strengthened Beams Using In-situ Load Test
… of highway bridges were retrofitted on their reinforced concrete (RC) girders with carbon-fiber reinforced polymers (CFRP) during the 1990's. Their conditions, after being in service for approximately 10 years, are of significant interest to the State's highway authority, as well as …
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FRP Confined Reinforced Concrete Circular Cross Section Seismic Applications
… retrofitting and improvements in seismic design. Fiber Reinforced Polymers (FRP), as a material with potential to increase strength and ductility of columns in conjunction with capacity design methodology, has promise for seismic design. By investigating the displacement, ductility, and flexural …
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Predictive Modelling of CFRP-Steel Double Strap Joints
Carbon fiber reinforced polymers (CFRP), which can be used to strengthen and repair damaged steel structures, have gained popularity in recent years. On the one hand, CFRP has demonstrated substantial advantages over conventional reinforcing techniques like welding and bolting, such as light …
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Reliability Analysis of Carbon Fiber Reinforced Polymer (CFRP) Strengthened Steel Beams
… of bonded joints between steel and carbon fiber reinforced polymers (CFRP) with an emphasis on understanding the role of the adhesive mechanical properties and the surface preparation techniques used to produce the joints. Reliability analysis of adhesively bonded CFRP-to-steel double-lap …
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Implementation of Infrared Non-Destructive Evaluation in Fiber-Reinforced Polymer Bouble-Web I-Beams
… that arises. With the introduction of fiber-reinforced polymers (FRP) in double-web I-beams (DWIB) to replace steel beams in bridge applications, there are many benefits along with the disadvantages. A bridge has been built with this new type of beam after only short-term proof testing …
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Cohesive Zone Modelling of Fiber–Matrix Interface in Composite Materials
<p>Carbon Fiber reinforced polymers (CFRPs) are widely used in aerospace, automotive, and structural applications due to their high specific strength, stiffness, and design flexibility. Their mechanical performance is critically governed by the fiber–matrix interface which controls stress transfer …
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An investigation of FRP reinforced glulam bolted connections
… become a more versatile material if used with Fiber Reinforced Polymers (FRP) to form a composite. This thesis presents the results of an investigation of the increase in yield strength, ultimate strength, and change in yield mode of wood connections when reinforced with FRP. Specifically, this …
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Durability of Chopped FiberReinforced Polymeric Composites for use in Experimental Automotive Fuel Cells
… has lead to concerns regarding the durability of fiber reinforced polymer (FRP) composite materials. Automotive fuel cell power train systems must prove themselves as a reliable alternative to the combustion engines and automatic transmissions. The use of polymer composites in fuel cells to serve …
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