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

被引：7

作者：

Mohammadi, Reza ^{[1
]}

Akrami, Roya ^{[2
]}

Assaad, Maher ^{[3
]}

Nasor, Mohamed ^{[4
]}

Imran, Ahmed ^{[4
]}

Fotouhi, Mohammad ^{[1
]}

机构：

[1] Delft Univ Technol, Fac Civil Engn & Geosci, NL-2628 CD Delft, Netherlands

[2] Univ Strathclyde, Dept Mech & Aerosp Engn, 75 Montrose St, Glasgow G1 1XJ, Scotland

[3] Ajman Univ, Coll Engn & IT, Dept Elect & Comp Engn, POB 346, Ajman, U Arab Emirates

[4] Ajman Univ, Coll Engn & IT, Dept Biomed Engn, POB 346, Ajman, U Arab Emirates

来源：

THEORETICAL AND APPLIED FRACTURE MECHANICS | 2023年 / 127卷

基金：

英国工程与自然科学研究理事会;

关键词：

Carbon/epoxy; Polysulfone nanofiber; Electro spinning process; Fatigue crack growth rate; Fracture toughness; INTERLAMINAR FRACTURE-TOUGHNESS; CARBON/EPOXY COMPOSITE; RESISTANCE;

D O I：

10.1016/j.tafmec.2023.104078

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this study, the fatigue properties of carbon fiber-reinforced polymer (CFRP) composite laminates were investigated, specifically focusing on the incorporation of 100-mu m 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.

引用

页数：10

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