A New Generation of Epoxy Composites for Primary Structural Applications: Materials and Mechanics

2008 ◽  
pp. 413-413-24 ◽  
Author(s):  
RE Evans ◽  
JE Masters
Keyword(s):  
Epoxy Composites ◽  
Structural Applications ◽  
New Generation

Influence of Incident Energy on Sisal/Epoxy Composite Subjected to Low Velocity Impact and Damage Characterization Using Ultrasonic C-Scan

2021 ◽  
Author(s):  
Saravanan Mahesh ◽  
Muthukumar Chandrasekar ◽  
R. Asokan ◽  
Yaddula Chandra Mouli ◽  
Katta Sridhar ◽  
...  
Keyword(s):  
Incident Energy ◽  
Epoxy Composite ◽  
Energy Levels ◽  
Epoxy Composites ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Sisal Fibre ◽  
Velocity Impact ◽  
Damage Characteristics ◽  
Structural Applications

Impact resistance is an inevitable characteristic of the composites employed in the high performance structural applications. Due to the growing interest in the use of sisal fibre as reinforcement in the polymer composites, it is required to determine the response of sisal/epoxy composites to low velocity impact at high incident energies where perforation can occur and assess the damage characteristics using a non-destructive technique. In this work, sisal/epoxy composites were subjected to drop weight impact in the velocity range of 3 m/s to 5 m/s at different energy levels between 20 J to 50 J according to the ASTM D7136. Based on the results observed, it is concluded that both the peak load and absorbed energy increased with the increasing incident energy level up to 40 J. At 50 J, perforation occurred and the maximum deformation was approximately 22 mm for the sisal/ epoxy composite. Damage characteristics and failure behaviour of the composite at different incident energies was examined from the visual images of the front and back face of the composite. The quantitative assessment of crack propagation in the sisal/epoxy composite and the damage area were determined from the ultrasonic C-scan images of the sample post impact at various energy levels.

Hybrid Effect of PJFs/E-glass/Carbon Fabric Reinforced Hybrid Epoxy Composites for Structural Applications.

2020 ◽  
pp. 1-11
Author(s):  
P. Madhu ◽  
M. R. Sanjay ◽  
Anish Khan ◽  
Ahmed Al Otaibi ◽  
Salma Ahmed Al-Zahrani ◽  
...  
Keyword(s):  
Epoxy Composites ◽  
Carbon Fabric ◽  
Hybrid Effect ◽  
Structural Applications ◽  
Glass Carbon

Flexural Properties of Epoxy Composites Filled with Glass Powder: Preliminary Results

2011 ◽  
Vol 410 ◽  
pp. 309-312 ◽  
Author(s):  
Harry Ku ◽  
Peter Wong ◽  
J. Huang ◽  
H. Fung ◽  
Mohan Trada
Keyword(s):  
Flexural Strength ◽  
Epoxy Resin ◽  
Glass Powder ◽  
Epoxy Composites ◽  
Research Centre ◽  
Flexural Properties ◽  
Preliminary Results ◽  
Structural Applications ◽  
Flexural Tests ◽  
Sufficient Strength

Epoxy resin was filled with glass powder with a view to increasing strength of the composite for structural applications by a research Centre on composites, University of Southern Queensland (USQ). In order to reduce costs, the Centre wishes to fill as much glass powder as possible subject to maintaining sufficient strength of the composites in structural applications. This project varies the percentage by weight of the glass powder in the composites which are then subjected to flexural tests. The results show that composite with 25 % by weight of the glass powder produces the highest flexural strength and Young’s modulus combined with a reasonable fluidity for casting; the highest flexural strain was achieved when the percentage by weight of glass powder is 10 %.

Materials for a New Generation of Vehicles

1995 ◽  
Vol 393 ◽  
Author(s):  
Toni Grobstein
Keyword(s):  
Fuel Efficiency ◽  
High Strength ◽  
Cost Effective ◽  
Advanced Materials ◽  
Ongoing Research ◽  
Structural Applications ◽  
Materials Research ◽  
National Initiative ◽  
Engine Components ◽  
New Generation

ABSTRACTThe Partnership for a New Generation of Vehicles (PNGV) is a national initiative with three goals: First, to significantly improve national competitiveness in manufacturing; second, to implement commercially viable innovations from ongoing research on conventional vehicles, and third, to develop a vehicle to achieve up to three times the fuel efficiency of today's comparable vehicle (ie, the 1994 Chrysler Concorde, Ford Taurus, and Chevrolet Lumina). Note this vehicle will have the equivalent customer purchase price of today's vehicles adjusted for economics, while meeting the customers' needs for quality, performance, and utility. Eight federal agencies are currently contributing to these goals, as well as the three principal US automobile manufacturers, numerous automotive component suppliers, research laboratories, and universities.Materials research and development is a significant effort within PNGV. The goals in this area include development of lightweight, recyclable materials for structural applications, high strength, long-life, high temperature materials for engine components, improved materials for alternative propulsion and energy storage systems, and cost-effective process technologies and component fabrication methods. Application of advanced materials to automobiles will involve consideration of diverse factors, including weight savings, affordability, recyclability, crashworthiness, repairability, and manufacturability.

Compressive Properties of White Clay Based Geopolymer Filled Epoxy Composite

2016 ◽  
Vol 841 ◽  
pp. 30-33
Author(s):  
Yusrina Mat Daud ◽  
Kamarudin Hussin ◽  
Che Mohd Ruzaidi Ghazali ◽  
Azlin Fazlina Osman ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Composite System ◽  
Epoxy Composite ◽  
Epoxy Composites ◽  
Compressive Properties ◽  
Compressive Test ◽  
Structural Applications ◽  
White Clay ◽  
Geopolymer Composites ◽  
Scanning Electron

In this study, the mechanical behavior of white clay based geopolymer filled epoxy composites was studied through compressive test. The morphology of white clay based geopolymer and origin was characterized using scanning electron microscopy (SEM). A series of epoxy composites with various white clay based geopolymer filler loadings varying from 0 to 7phr of was prepared. The assessments showed the presence of white clay based geopolymer in the composite system has improved the compressive properties of the epoxy. This indicated the potential of epoxy / white clay based geopolymer composites in structural applications.

Mechanical Analysis of Nickel Particle-Coated Carbon Fiber-Reinforced Epoxy Composites for Advanced Structural Applications

2018 ◽  
Vol 1 (8) ◽  
pp. 4332-4339 ◽  
Author(s):  
Amit K Yadav ◽  
Soma Banerjee ◽  
Ravindra Kumar ◽  
Kamal K Kar ◽  
J. Ramkumar ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Nickel Particle ◽  
Mechanical Analysis ◽  
Epoxy Composites ◽  
Fiber Reinforced ◽  
Structural Applications ◽  
Carbon Fiber Reinforced ◽  
Coated Carbon

scholarly journals Evaluation of the protective performance of hydrophobic coatings applied on carbon-fibre epoxy composites

2019 ◽  
Vol 54 (10) ◽  
pp. 1327-1338 ◽  
Author(s):  
Heather O'Connor ◽  
Denis P Dowling
Keyword(s):  
Carbon Fibre ◽  
Water Immersion ◽  
Atmospheric Plasma ◽  
Epoxy Composites ◽  
Air Plasma ◽  
Significant Deterioration ◽  
Hydrophobic Coatings ◽  
Protective Layers ◽  
Structural Applications ◽  
Protective Performance

Carbon–fibre epoxy composites are widely used for high-performance structural applications, where they are often exposed to harsh environments. The result of moisture ingress has been extensively studied, causing significant deterioration in the mechanical properties of these composites. This study evaluates the performance of five commercial hydrophobic coatings as protective layers, to inhibit moisture ingress into the composite. The coatings evaluated were NeverWet, HydroBead, SHC, Aculon and LiquidGlass. These coatings were characterised and compared in terms of hydrophobicity, surface energy, roughness and chemical composition. This study also evaluated two atmospheric plasma pre-treatments as a means of enhancing the adhesion performance of these coatings. The pre-treatments involved the use of an air plasma for the activation of the epoxy, as well as the plasma deposition of a nanometre thick SiOx interlayer coating. The durability and protective performance of the coatings, with and without the pre-treatments were then compared using an abrasion test as well as a water immersion study. The use of both plasma pre-treatments was found to enhance the adhesion and the abrasion performance of four out of the five coatings. Of the coatings and pre-treatments investigated, the LiquidGlass in conjunction with a SiOx-coating interlayer was found to exhibit the highest abrasion resistance. This was followed by the composite, which was plasma activated prior to the application of the Aculon coating. Only minor differences were observed when comparing the total moisture ingress (M%) of the epoxy, coated with the different hydrophobic layers. The composite coated with the Aculon and SiOx interlayer exhibited the least amount of moisture ingress, at 0.90%, compared to 1.08% of the uncoated specimen. The shear strength of epoxy composite, coated with the LiquidGlass, NeverWet and the activated Aculon combination, were within the range of the uncoated specimens, therefore the moisture ingress was reversible upon heating and no permanent damage to the epoxy–fibre interface was observed. It is concluded that, of the five coatings investigated, both the Aculon coating and LiquidGlass in combination with a SiOx interlayer coating, exhibit the greatest potential as protective layers for carbon fibre epoxy composites.

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