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Showing 1 to 20 of 46 for “"Carbon fiber reinforced polymer (CFRP)"”.
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Reliability Analysis of Carbon Fiber Reinforced Polymer (CFRP) Strengthened Steel Beams
… the behavior 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 …
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Shear strengthening of reinforced concrete beams with bi-directional carbon fiber reinforced polymer (CFRP) strips and CFRP anchors
The use of externally bounded Carbon Fiber Reinforced Polymer (CFRP) for strengthening existing RC structures has shown promising results. Although CFRP materials have high tensile strength, the ability to utilize that strength is limited by debonding of the CFRP laminates from the concrete …
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BOND BEHAVIOR BETWEEN STEEL AND HIGH MODULUS CFRP PLATES AT MODERATLEY ELEVATED TEMPERATURES
… steel beams strengthened with externally bonded carbon fiber reinforced polymer (CFRP) plates. In the first phase of the research, five steel-CFRP bonded double-lap shear coupons were tested at different temperatures to characterize the bond behavior. In the second phase of testing steel beams …
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A High Power Microwave Zoom Antenna With Metal Plate Lenses
… beam output and approximately 10% bandwidth. Carbon Fiber Reinforced Polymer (CFRP) composites were demonstrated through experiment and simulation to have sufficient conductivity to replace metal for the lens elements and would provide a stronger, lighter weight alternative to metal. Such …
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Carbon fiber substitution in shipboard instrument structural mounts for vibration and shock isolation
… and analyze the effects of substituting carbon fiber reinforced polymer (CFRP) for use in the structural mounts on rotating marine diesel engines and on sensitive, nonrotating Electronic Chart Display and Information Systems (ECDIS). The high specific stiffness of CFRP make it an …
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Behavior of FRP reinforced and partially prestressed concrete members under the effects of temperature gradients
… and on the control of thermal cracking in reinforced concrete (RC) and partially prestressed concrete (PPC) beams. A total of eleven RC and PPC beams using FRP rebars were tested. The test program consisted of two series; RC series and PPC series. The eleven beams had the same concrete …
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Analysis of After Impact Characteristics and Structural Optimization of CFRP Composite Plate
… were (a) to identify the characteristics of a carbon/epoxy composite plate after low-velocity impact, (b) to create a validated model to simulate the impact process and progressive failure, and (c) to perform sizing and shape optimization of the laminate for improving the damage resistance of …
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In-situ Characterization and Machine Learning Applications for Composite Processing
<p>Numerous aircraft and spacecrafts utilize carbon fiber-reinforced polymer structures to significantly enhance their operational efficiency and overall performance. Autoclave composite processing offers a solution for the intricate design of complex structures. However, the rapid temperature and …
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Development of Pre-Stressed Retrofit Strategies for Mitigating Fatigue Cracking in Steel Waterway Lock Gate Components
… retrofit strategies. Retrofit strategies using carbon fiber reinforced polymer (CFRP) plates having optimized pre-stress levels are discussed. </p>
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Fatigue Strengthening of Damaged Steel Plates using Ultra-High Modulus Carbon Fibre-reinforced Polymer Plates
… bonded small patch Ultra-high modulus (UHM) carbon-fiber reinforced polymer (CFRP) plates of 460 GPa modulus in extending fatigue life and slowing crack propagation in steel plates with simulated fatigue cracks. The study investigates a range of bond lengths at or below the development length …
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Enhancement of Mechanical, Structural, and Electrical Properties in Advanced Composites and Vat Photopolymerized 3D Printing Nanocomposites
… mechanical properties and versatility. Fiber-reinforced polymer (FRP) composites, particularly those reinforced with carbon fibers, are extensively used as structural materials in spacecraft, aircraft, high-performance vehicles, and wind turbines due to their high strength-to-weight …
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Investigation of integrally-heated tooling and thermal modeling methodologies for the rapid cure of aerospace composites
Carbon Fiber Reinforced Polymer (CFRP) composite manufacturing requires the CFRP part on the associated tool to be heated, cured, and cooled via a prescribed thermal profile. Current methods use large fixed structures such as ovens and autoclaves to perform this process step; however heating these …
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Development of Multi-Axial Fatigue Retrofits for Lock Gate Components
… fatigue crack mitigation by the use of carbon fiber reinforced polymer (CFRP) capable of extending gate life into a time frame where permanent repair can occur. Detailed finite element analysis (FEA) models are used to develop and validate CFRP retrofit geometries capable of mitigating …
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Developing a circumstance-based innovation strategy for a midsized aerospace manufacturer : fostering intrapreneurship, opening boundaries, and seeding disruption
… techniques, with an emerging focus in carbon-fiber reinforced polymer (CFRP) composite fabrication. Undertaking the methodology, the thesis finds that the highly competitive landscape combined with the firm's current market position and capabilities suggest an innovation strategy …
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Design and Additive Manufacturing of Carbon-Fiber Reinforced Polymer Microlattice with High Stiffness and High Damping
Carbon fiber reinforced polymer (CFRP) composites are known for their high stiffness-to-weight and high strength-to-weight ratios and hence are of great interest in several engineering fields such as aerospace, automotive and defense. However, despite their light weight, high stiffness and high …
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Experimental study and numerical modelling of woven fabric kenaf fiber composites hybrid adhesively bonded-bolted joints
Couple with natural fiber composite parts, hybrid joints provide better joint strength than using separate joints. There are limited studies on structures response and strength prediction work on hybrid joints that limits its applicability. The aim of present study is to conduct experimental …
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A New CFRP-UHPC System for Strengthening Reinforced Concrete T-Beams
Since Fiber Reinforced Polymer (FRP) was introduced to the construction field, strengthening of reinforced concrete beams using FRP laminates became a common repair and retrofit technique. Traditionally, Reinforced Concrete (RC) beams are strengthened by adhering FRP laminates to the tension side …
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Shear strengthening of RC beams using carbon fiber reinforced polymer laminates
… in flexure rather than in shear. Many existing reinforced concrete (RC) members are found to be deficient in shear strength and need to be repaired. Deficiencies occur due to several reasons such as insufficient shear reinforcement or reduction in steel area due to corrosion, increased service …
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CFRP as Shear and End-Zone Reinforcement for Concrete Bridge Girders
… A possible solution to the corrosion issue is carbon fiber reinforced polymer (CFRP) material. CFRP material has been implemented as flexural reinforcement in many cases, but not as transverse reinforcing. The CFRP material studied in this thesis was NEFMAC grid, which consists of vertical and …
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C-Grid as Shear Reinforcement in Concrete Bridge Girders
… bridges throughout the United States. The use of carbon fiber reinforced polymer (CFRP) materials as the flexural reinforcement in bridge girders has been extensively studied. However, CFRP transverse reinforcement has not been as rigorously investigated, and many studies have focused on CFCC …
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