Notch-sensitivity of hybrid carbon-fibre/self-reinforced polypropylene composites

Nijs, A.; Selezneva, Marina; Swolfs, Yentl; Hirano, Norio; Taketa, Ichiro; Karaki, Takuya; Verpoest, Ignaas; Gorbatikh, Larissa

doi:10.1016/j.compscitech.2020.108422

Cited by 13 publications

(6 citation statements)

References 31 publications

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“…Hybrid carbon fiber/self‐reinforced polypropylene composites are achieved by introducing discontinuities with carefully designed patterns 12 . Discontinuous carbon fiber mats are used to fabricate notch‐sensitivity of hybrid carbon‐fiber/self‐reinforced polypropylene composites 13 . In order to design discontinuous‐fiber reinforced composites that can meet the desired mechanical function, the key design considerations are the strength and stiffness of the materials used for making the fiber and the matrix, the structure of the fiber, and the composition of the fiber and matrix materials 14 .…”

Section: Introductionmentioning

confidence: 99%

“…12 Discontinuous carbon fiber mats are used to fabricate notch-sensitivity of hybrid carbon-fiber/self-reinforced polypropylene composites. 13 In order to design discontinuous-fiber reinforced composites that can meet the desired mechanical function, the key design considerations are the strength and stiffness of the materials used for making the fiber and the matrix, the structure of the fiber, and the composition of the fiber and matrix materials. 14 Due to the high mechanical properties such as lightweight, high specific tensile strength, high modulus, high specific stiffness, outstanding wear resistance, short molding times, and high recyclability, applications of chopped carbon fiber polymer composites have been rapidly increasing.…”

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confidence: 99%

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Mechanical property and thermal stability of short carbon fiber reinforced polysulfonamide composites

Chen,

An,

et al. 2024

Polymer Composites

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In this paper, polysulfonamide‐based composite materials (SCF/PSAf composite) reinforced by the short carbon fiber were prepared. The mechanical properties and thermal stability of SCF/PSAf composite were characterized experimentally and compared with those of polysulfonamide‐based single‐polymer composites (PSA SPCs). Results showed that SCF/PSAf composites exhibit higher thermal stability due to the excellent thermal stability of SCFs. Furthermore, the additional short carbon fibers also considerably enhance the flexure strength of PSA SPCs due to the strong interfacial bonding between SCF and PSAf. The properties and understanding of SCF/PSAf composite obtained in this work can benefit further applications of this novel composite material.Highlights SCF/PSAf composites are prepared by hot compression, and the adhesion between the PSA matrix and SCF is good. The flexural strength of the SCF/PSAf composite is about 2.5 times higher than that of PSA SPCs. The storage modulus of SCF/PSAf composites is about 3.5 times higher than that of PSA SPCs. The addition of short carbon fibers helps to improve the thermal properties of SCF/PSAf composites. SCF/PSAf composite has a stronger ability to resist deformation and a higher operating temperature than the PSA SPCs do.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Mechanical property and thermal stability of short carbon fiber reinforced polysulfonamide composites

Chen,

An,

et al. 2024

Polymer Composites

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“…Mechanical performance and durability of composites with open holes can be analyzed using open-hole tension (OHT) tests. [32][33][34][35][36] While research has explored the effect of open holes on synthetic composites, there is limited information on natural fiber and sustainable composites.…”

Section: Introductionmentioning

confidence: 99%

“…Notch sensitivity is an imperative design parameter that can also be used for assessment of damage tolerance and toughness. Mechanical performance and durability of composites with open holes can be analyzed using open‐hole tension (OHT) tests 32–36 . While research has explored the effect of open holes on synthetic composites, there is limited information on natural fiber and sustainable composites.…”

Section: Introductionmentioning

confidence: 99%

Effect of thermal cycling on open‐hole tensile strength of sustainable composites: An experimental investigation

Varikkadinmel,

Kaushik,

Singh

2023

Polymer Composites

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Sustainable composites are presently employed in applications where structural demands are minimal. Basalt fiber reinforced PLA (BFPLA) and polybutylene succinate (BFPBS) composites, incorporates bio‐based materials, offer the potential to reduce non‐renewable resource consumption and improve end‐of‐life disposal practices. Given the significance of thermal aging in semi‐structural applications and the necessity for open holes (notches) for installation and assembly, little is known about how thermal cycling (TC) affects the open‐hole strength of sustainable composites. This experimental work establishes a quantitative relationship between open‐hole strength and TC, taking into account varying abrasive waterjet pressures, and explores the impacts of thermal aging on the notch sensitivity, thermal, mechanical, and physical properties. BFPBS displayed better unnotched tensile strength and notched strength than pre‐thermal BFPLA specimens after they have been subjected to 100 TC ranging from −20 to 55°C. Thermal aging significantly influenced notch sensitivity, emphasizing its consideration in evaluating notch performance. This research provides a significant contribution to our current understanding of the effects of thermal aging on sustainable composites, enabling their informed application in a variety of industries and the results highlight their promising potential, in particular BFPBS, as strong alternative for medium load applications.Highlights Evaluated thermal aging effects on basalt fiber (BF) composites, revealing improved properties in BF/PBS composites after thermal cycles. Established quantitative link between mechanical behavior and thermal cycling using varying waterjet pressure values. Basalt fibers enhanced crystallinity and thermal stability of PLA and PBS polymers, showing promise for sustainable composites. Notch sensitivity impacted by thermal aging, underlining the importance of considering these effects in notch performance evaluation. BF/PBS composites demonstrated potential as robust alternatives for indoor products and sports equipment.

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“…The difference in fatigue performance between notched and notched-free specimens gives the notch sensitivity. Finally, Nijs et al [19] used full-field strain measures to determine the notch sensitivity in a PP matrix carbon composite.…”

Section: Introductionmentioning

confidence: 99%

Notch Sensitivity Study in U-notched Polymers Built by Additive Manufacturing (AM)

Diaz Rodriguez,

Pertuz Comas,

Sandoval Herrera

2023

Frattura Ed Integrità Strutturale

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Onyx ® is a new material composed of Polyamide 6 reinforced with short carbon fiber, used in the novel additive manufacturing composites technique. This paper aims to present the axial fatigue performance of this material with and without U-notches. The experimentally determined S-N fatigue curve was obtained under axial load with a load inversion ratio, R = 0.1, and compared to fatigue performance of U-notched samples ranging from 0.25 to 2 mm radius. In addition, the stress concentration factor was compared for static and alternative loading to obtain the notch sensitivity in terms of the U-notch radius, showing that there is indeed a difference in stress concentration between them. The advantage of the approach is that it permits using commonly used dimensioning methods for this AM material.

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Notch-sensitivity of hybrid carbon-fibre/self-reinforced polypropylene composites

Cited by 13 publications

References 31 publications

Mechanical property and thermal stability of short carbon fiber reinforced polysulfonamide composites

Mechanical property and thermal stability of short carbon fiber reinforced polysulfonamide composites

Effect of thermal cycling on open‐hole tensile strength of sustainable composites: An experimental investigation

Notch Sensitivity Study in U-notched Polymers Built by Additive Manufacturing (AM)

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