Tribologically enhanced self‐healing hybrid laminates for wind turbine applications DOI Creative Commons
Kemal Hasirci, Berkay Ergene, Alaeddin Burak İrez

et al.

Polymer Composites, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 8, 2024

Abstract Wind turbines are subjected to extreme weather and load conditions; hence, high strength impact resistance required. Furthermore, wind turbine blades can be loads such as bird strikes, resulting in the formation of microcracks. Self‐healing capsules used mend for microscale damage. The incorporation self‐healing may cause a decrease mechanical characteristics composites prior resistance, which compensated with efficient fillers silicon carbide whiskers (SiC w ). Thus, novel hybrid composite structure is examined advantage using mechanism SiC reinforcement. Tensile, tribological, Charpy tests were performed characterize tribological properties, supported microscopic observations. Multiple experimental characterizations investigate impact, ultimate tensile (UTS) energy absorption capacity shown increase by 32% 45%, respectively, addition . presence agents provides 5% rise UTS after enough time healing following collision. structure's performance improved 10% wear 20% friction coefficient. Highlights Hybrid laminated whisker capsules. Tensile conducted observations Increased 45%. Tribological improvement

Language: Английский

Low-velocity impact behavior of one-part engineered geopolymer composite under extreme temperatures DOI
Yichen Zhou, Zhiyong Hu,

Xupeng Sui

et al.

Composites Part A Applied Science and Manufacturing, Journal Year: 2025, Volume and Issue: unknown, P. 108739 - 108739

Published: Jan. 1, 2025

Language: Английский

Citations

2
Post-impact residual torsional strength and acoustic emission analysis of filament wound composite pipes DOI Creative Commons
Karolina Paczkowska,

Zuzanna Pacholec,

Grzegorz Szychta

et al.

Polimery, Journal Year: 2025, Volume and Issue: 70(1), P. 30 - 39

Published: Feb. 19, 2025

The residual torsional strength of composite pipes after different impact loading and with acoustic emission analysis were investigated. It was shown that the undamaged samples differ significantly depending on fiber winding angle. a angle 45° showed higher compared an 30°.

Language: Английский

Citations

0
Calibration of the low‐velocity impact experiments DOI Creative Commons
Ramzi Othman, U.A. Khashaba

Polymer Composites, Journal Year: 2025, Volume and Issue: unknown

Published: April 5, 2025

Abstract Low‐velocity impact experiments are essential for evaluating the mechanical behavior and resistance of composite materials in engineering applications. These primarily based on measurement force‐time signal a few parameters, including energy, velocity, mass. All other such as displacement, absorbed subsequently derived from these fundamental inputs. This paper first investigates influence miscalibration force signals, highlighting its significant reliability calculated energy. Specifically, error 10% can result more than 20% maximum deflection over 40% Second, this study introduces novel calibration method principle that absorb negligible energy during low‐energy impacts below damage threshold. The proposed is validated using theoretical mass‐spring model, demonstrating effectiveness improving accuracy. Calibration enhances consistency values, reducing deviation by an average 6.45%, aligning force‐displacement curves with predictions. Additionally, procedure significantly reduces residual initial range 1.084–1.226 J to 0.013–0.030 J, yielding values reliable tests conducted at energies Hence, highlights importance proper provides robust framework achieving accurate consistent results. Highlights A new low‐velocity proposed. Incorrect affects accuracy displacement. ensures absorption estimates polymer composites. It reliability. approach improves repeatability experiments.

Language: Английский

Citations

0
Low-velocity impact behaviour of flat and tapered Single-Double composites specimens DOI Creative Commons
Alessandro Vescovini, Carina Xiaochen Li,

Cecilia Malverti

et al.

Composite Structures, Journal Year: 2024, Volume and Issue: 355, P. 118823 - 118823

Published: Dec. 26, 2024

Language: Английский

Citations

2
Damage behavior of functionally graded kevlar/carbon epoxy nanocomposites reinforced with polyamide 6.6 nanofiber and MWCNTs subjected to low-velocity impact DOI
Alper Günöz, Memduh Kara

International Journal of Damage Mechanics, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 9, 2024

The use of carbon and kevlar fiber-reinforced composite materials continues to grow in high-tech applications such as aerospace engineering. One the most desired properties structures is a strong interfacial bond between matrix fiber. Nano-material reinforcement one preferred methods for strengthening fiber-matrix bond. In present research, polyamide 6.6 (PA 6.6) nanofiber multi-walled nanotubes (MWCNTs) reinforced fabric (KF), (CF) epoxy nanocomposite plates were produced by functional grading these two fabrics. PA nanofibers, obtained electrospinning, placed layers, 12-layer fabricated using vacuum-assisted hand lay-up method. producing MWCNTs plates, 0.3 wt.% added into matrix. A comprehensive set 16 distinct was manufactured, encompassing unreinforced with MWCNTs, 6.6, combination 6.6-MWCNTs). impact strengths investigated at energy levels 20, 40 60 J. effects reinforcing structure 6.6-MWCNTs, well functionally KF/CF on strength, detail. damages that occurred material result low-velocity tests interpreted examining high-resolution camera optical microscope images. Thus, nanoparticle hybridization effect evaluated together. With strength samples increased significantly compared samples. Moreover, amount damage caused test reduced.

Language: Английский

Citations

1
Tribologically enhanced self‐healing hybrid laminates for wind turbine applications DOI Creative Commons
Kemal Hasirci, Berkay Ergene, Alaeddin Burak İrez

et al.

Polymer Composites, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 8, 2024

Abstract Wind turbines are subjected to extreme weather and load conditions; hence, high strength impact resistance required. Furthermore, wind turbine blades can be loads such as bird strikes, resulting in the formation of microcracks. Self‐healing capsules used mend for microscale damage. The incorporation self‐healing may cause a decrease mechanical characteristics composites prior resistance, which compensated with efficient fillers silicon carbide whiskers (SiC w ). Thus, novel hybrid composite structure is examined advantage using mechanism SiC reinforcement. Tensile, tribological, Charpy tests were performed characterize tribological properties, supported microscopic observations. Multiple experimental characterizations investigate impact, ultimate tensile (UTS) energy absorption capacity shown increase by 32% 45%, respectively, addition . presence agents provides 5% rise UTS after enough time healing following collision. structure's performance improved 10% wear 20% friction coefficient. Highlights Hybrid laminated whisker capsules. Tensile conducted observations Increased 45%. Tribological improvement

Language: Английский

Citations

0