Polysulfone nanofiber-modified composite laminates: Investigation of mode-I fatigue behavior and damage mechanisms

Reza Mohammadi; Roya Akrami; Maher Assaad; Mohamed Nasor; Ahmed Imran; Mohammad Fotouhi

doi:10.1016/j.tafmec.2023.104078

Polysulfone nanofiber-modified composite laminates: Investigation of mode-I fatigue behavior and damage mechanisms

Reza Mohammadi
, Roya Akrami
, Maher Assaad
, Mohamed Nasor
, Ahmed Imran
, Mohammad Fotouhi

Delft University of Technology
University of Strathclyde

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

In this study, the fatigue properties of carbon fiber-reinforced polymer (CFRP) composite laminates were investigated, specifically focusing on the incorporation of 100-µm polysulfone (PSU) nanofibers as an interleaving material. The PSU nanofibers were produced using the electrospinning technique. Both quasi-static and fatigue tests were conducted on both the reference specimens and the modified specimens to evaluate their mode-I performance. The results revealed an 85% increase in fracture toughness (G_IC) under quasi-static testing. The fatigue plots revealed a noteworthy reduction in the fatigue crack growth rate (da/dN) for the modified specimens due to new toughening mechanisms. Scanning electron microscopy (SEM) demonstrated that, the PSU nanofiber became melted and distributed in the interface, leading to phase separation and a sea-island structure. The presence of PSU microspheres caused crack deflection during delamination, which resulted in increased fracture and fatigue resistance.

Original language	English
Article number	104078
Journal	Theoretical and Applied Fracture Mechanics
Volume	127
DOIs	https://doi.org/10.1016/j.tafmec.2023.104078
State	Published - Oct 2023

Keywords

Carbon/epoxy
Electro spinning process
Fatigue crack growth rate
Fracture toughness
Polysulfone nanofiber

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10.1016/j.tafmec.2023.104078

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title = "Polysulfone nanofiber-modified composite laminates: Investigation of mode-I fatigue behavior and damage mechanisms",

abstract = "In this study, the fatigue properties of carbon fiber-reinforced polymer (CFRP) composite laminates were investigated, specifically focusing on the incorporation of 100-µm polysulfone (PSU) nanofibers as an interleaving material. The PSU nanofibers were produced using the electrospinning technique. Both quasi-static and fatigue tests were conducted on both the reference specimens and the modified specimens to evaluate their mode-I performance. The results revealed an 85\% increase in fracture toughness (GIC) under quasi-static testing. The fatigue plots revealed a noteworthy reduction in the fatigue crack growth rate (da/dN) for the modified specimens due to new toughening mechanisms. Scanning electron microscopy (SEM) demonstrated that, the PSU nanofiber became melted and distributed in the interface, leading to phase separation and a sea-island structure. The presence of PSU microspheres caused crack deflection during delamination, which resulted in increased fracture and fatigue resistance.",

keywords = "Carbon/epoxy, Electro spinning process, Fatigue crack growth rate, Fracture toughness, Polysulfone nanofiber",

author = "Reza Mohammadi and Roya Akrami and Maher Assaad and Mohamed Nasor and Ahmed Imran and Mohammad Fotouhi",

note = "Publisher Copyright: {\textcopyright} 2023 The Authors",

year = "2023",

month = oct,

doi = "10.1016/j.tafmec.2023.104078",

language = "English",

volume = "127",

journal = "Theoretical and Applied Fracture Mechanics",

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TY - JOUR

T1 - Polysulfone nanofiber-modified composite laminates

T2 - Investigation of mode-I fatigue behavior and damage mechanisms

AU - Mohammadi, Reza

AU - Akrami, Roya

AU - Assaad, Maher

AU - Nasor, Mohamed

AU - Imran, Ahmed

AU - Fotouhi, Mohammad

PY - 2023/10

Y1 - 2023/10

N2 - In this study, the fatigue properties of carbon fiber-reinforced polymer (CFRP) composite laminates were investigated, specifically focusing on the incorporation of 100-µm polysulfone (PSU) nanofibers as an interleaving material. The PSU nanofibers were produced using the electrospinning technique. Both quasi-static and fatigue tests were conducted on both the reference specimens and the modified specimens to evaluate their mode-I performance. The results revealed an 85% increase in fracture toughness (GIC) under quasi-static testing. The fatigue plots revealed a noteworthy reduction in the fatigue crack growth rate (da/dN) for the modified specimens due to new toughening mechanisms. Scanning electron microscopy (SEM) demonstrated that, the PSU nanofiber became melted and distributed in the interface, leading to phase separation and a sea-island structure. The presence of PSU microspheres caused crack deflection during delamination, which resulted in increased fracture and fatigue resistance.

AB - In this study, the fatigue properties of carbon fiber-reinforced polymer (CFRP) composite laminates were investigated, specifically focusing on the incorporation of 100-µm polysulfone (PSU) nanofibers as an interleaving material. The PSU nanofibers were produced using the electrospinning technique. Both quasi-static and fatigue tests were conducted on both the reference specimens and the modified specimens to evaluate their mode-I performance. The results revealed an 85% increase in fracture toughness (GIC) under quasi-static testing. The fatigue plots revealed a noteworthy reduction in the fatigue crack growth rate (da/dN) for the modified specimens due to new toughening mechanisms. Scanning electron microscopy (SEM) demonstrated that, the PSU nanofiber became melted and distributed in the interface, leading to phase separation and a sea-island structure. The presence of PSU microspheres caused crack deflection during delamination, which resulted in increased fracture and fatigue resistance.

KW - Carbon/epoxy

KW - Electro spinning process

KW - Fatigue crack growth rate

KW - Fracture toughness

KW - Polysulfone nanofiber

UR - https://www.scopus.com/pages/publications/85170265050

U2 - 10.1016/j.tafmec.2023.104078

DO - 10.1016/j.tafmec.2023.104078

M3 - Article

AN - SCOPUS:85170265050

SN - 0167-8442

VL - 127

JO - Theoretical and Applied Fracture Mechanics

JF - Theoretical and Applied Fracture Mechanics

M1 - 104078

ER -

Polysulfone nanofiber-modified composite laminates: Investigation of mode-I fatigue behavior and damage mechanisms

Abstract

Keywords

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