
Matéria (Rio de Janeiro), Journal Year: 2024, Volume and Issue: 29(4)
Published: Jan. 1, 2024
Language: Английский
Matéria (Rio de Janeiro), Journal Year: 2024, Volume and Issue: 29(4)
Published: Jan. 1, 2024
Language: Английский
Polymers, Journal Year: 2024, Volume and Issue: 16(23), P. 3447 - 3447
Published: Dec. 9, 2024
Interlaminar shear strength (ILSS) and compressive are two of the most critical properties carbon fiber-reinforced polymer (CFRP). In this report, three types epoxy resins-4,4'-diaminodiphenylmethane resin (AG-80), bisphenol A (E-1NT), novolac (EPN)-were studied. E-1NT is characterized by low viscosity cost but exhibits poor mechanical properties, while AG-80 offers better wetting with fiber. These resins were mixed in various mass ratios. The study revealed that as content increased, ILSS composite also reaching a maximum 94.04 MPa when reached 60%. Beyond point, further increases did not enhance ILSS. Conversely, initially increased then declined sharply ratio increased. was recorded at 748.52 60%, which 21% higher than pure 32% E-1NT. Additionally, examined different ionic sizing agents four matrices (E-1NT/DDS, AG-80/DDS, AG-80/E-1NT/DDS, EPN/DDS). Among them, 60% AG-80/40% E-1NT/DDS/CF formulation demonstrated best balance both strength.
Language: Английский
Citations
4Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering, Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 23, 2024
The study aims to evaluate the tensile behavior of sisal glass-reinforced polymer composites with varying geometric irregularities. Composite laminates were fabricated using a hand layup technique, incorporating fiber woven reinforcement and ortho-phthalic unsaturated polyester resin. laminates, configured 7 9 layers, subjected testing without 6 mm 12 diameter central holes double spaced at 6.2 mm, 48 intervals. tests conducted an electromechanical test system, results analyzed determine ultimate strength, modulus elasticity, failure strain for each specimen type. findings revealed significant differences in strength depending on presence size holes. Specimens exhibited reduction extent dependent hole diameter. Larger resulted more severe stress concentrations, leading greater degradation. Double-hole specimens showed similar patterns, closer spacing exacerbating concentration effects. residual ratio (RSR) different configurations conformed expected values fiber-reinforced circular hole-type defects. underscores critical impact irregularities mechanical performance composites. These can guide development design strategies mitigate adverse effects concentrators, thereby enhancing reliability durability these materials practical applications.
Language: Английский
Citations
3Matéria (Rio de Janeiro), Journal Year: 2024, Volume and Issue: 29(4)
Published: Jan. 1, 2024
Language: Английский
Citations
3Advances in Mechanical Engineering, Journal Year: 2024, Volume and Issue: 16(10)
Published: Oct. 1, 2024
There has been an increasing interest in natural fibre-reinforced composites as viable alternatives to typical synthetic fibre a result of increased environmental consciousness, which led the quest for materials that are more sustainable. This review paper aims provide comprehensive evaluation performance both and by summarizing relevant information. The article begins discussing advantages fibres. These include fact fibres eco-friendly, Natural demonstrate significantly reduced carbon footprint energy usage over their entire life cycle when compared glass counterparts. Furthermore, biodegradability provides opportunity end-of-life recycling or disposal options ecologically benign than those composites. is because biodegradable research acknowledges various factors, such specific matrix used, manufacturing procedures employed, can influence Additionally, further development optimize ensure widespread adoption sustainable traditional composite materials. environmentally friendly
Language: Английский
Citations
2Matéria (Rio de Janeiro), Journal Year: 2024, Volume and Issue: 29(4)
Published: Jan. 1, 2024
Language: Английский
Citations
0Matéria (Rio de Janeiro), Journal Year: 2024, Volume and Issue: 29(4)
Published: Jan. 1, 2024
Language: Английский
Citations
0