Comparing Mode I, Mode II and Mixed-Mode I/II interlaminar fracture toughness of glass and carbon fiber reinforced polymer laminates with the same epoxy matrix system

Maria Gfrerrer; Veronika Koss; Johannes Wiener; Clara Schuecker; Andreas J. Brunner; Gerald Pinter

doi:10.1016/j.engfracmech.2025.111009

Comparing Mode I, Mode II and Mixed-Mode I/II interlaminar fracture toughness of glass and carbon fiber reinforced polymer laminates with the same epoxy matrix system

Maria Gfrerrer
, Veronika Koss
, Johannes Wiener
, Clara Schuecker
, Andreas J. Brunner
, Gerald Pinter

Empa - Swiss Federal Laboratories for Materials Science and Technology, Dübendorf

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

Abstract

Quasi-static delamination resistance tests under Mode I, Mode II and Mixed-Mode I/II loading are performed on unidirectional (UD) glass fiber (GF) and carbon fiber (CF) reinforced polymer laminates manufactured with the same epoxy matrix. Compared to the CF-, the GF-epoxy laminate has a higher fracture toughness under all loading modes. Fracture toughnesses differ the most for Mode II and the least for Mode I loading. Mixed-Mode I/II fracture toughness is determined in Fixed-Ratio Mixed-Mode and Mixed-Mode Bending tests, performed at the same Mixed-Mode I/II ratio of 4:3. The two test methods yield comparable results for UD GF- and UD CF-epoxy.

Original language	English
Article number	111009
Number of pages	27
Journal	Engineering Fracture Mechanics
Volume	2025
Issue number	Volume 320, 13 May
DOIs	https://doi.org/10.1016/j.engfracmech.2025.111009
Publication status	E-pub ahead of print - 6 Mar 2025

Bibliographical note

Keywords

Carbon fiber reinforced polymer laminate
Delamination resistance
Fracture toughness
Glass fiber reinforced polymer laminate
Mixed-Mode I/II

Access to Document

10.1016/j.engfracmech.2025.111009

Cite this

Gfrerrer, M., Koss, V., Wiener, J., Schuecker, C., Brunner, A. J., & Pinter, G. (2025). Comparing Mode I, Mode II and Mixed-Mode I/II interlaminar fracture toughness of glass and carbon fiber reinforced polymer laminates with the same epoxy matrix system. Engineering Fracture Mechanics, 2025(Volume 320, 13 May), Article 111009. Advance online publication. https://doi.org/10.1016/j.engfracmech.2025.111009

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title = "Comparing Mode I, Mode II and Mixed-Mode I/II interlaminar fracture toughness of glass and carbon fiber reinforced polymer laminates with the same epoxy matrix system",

abstract = "Quasi-static delamination resistance tests under Mode I, Mode II and Mixed-Mode I/II loading are performed on unidirectional (UD) glass fiber (GF) and carbon fiber (CF) reinforced polymer laminates manufactured with the same epoxy matrix. Compared to the CF-, the GF-epoxy laminate has a higher fracture toughness under all loading modes. Fracture toughnesses differ the most for Mode II and the least for Mode I loading. Mixed-Mode I/II fracture toughness is determined in Fixed-Ratio Mixed-Mode and Mixed-Mode Bending tests, performed at the same Mixed-Mode I/II ratio of 4:3. The two test methods yield comparable results for UD GF- and UD CF-epoxy.",

keywords = "Fracture toughness, Delamination resistance, Glass fiber reinforced polymer laminate, Carbon fiber reinforced polymer, Mixed-Mode I/II, Carbon fiber reinforced polymer laminate, Delamination resistance, Fracture toughness, Glass fiber reinforced polymer laminate, Mixed-Mode I/II",

author = "Maria Gfrerrer and Veronika Koss and Johannes Wiener and Clara Schuecker and Brunner, \{Andreas J.\} and Gerald Pinter",

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Gfrerrer, M, Koss, V, Wiener, J, Schuecker, C, Brunner, AJ & Pinter, G 2025, 'Comparing Mode I, Mode II and Mixed-Mode I/II interlaminar fracture toughness of glass and carbon fiber reinforced polymer laminates with the same epoxy matrix system', Engineering Fracture Mechanics, vol. 2025, no. Volume 320, 13 May, 111009. https://doi.org/10.1016/j.engfracmech.2025.111009

Comparing Mode I, Mode II and Mixed-Mode I/II interlaminar fracture toughness of glass and carbon fiber reinforced polymer laminates with the same epoxy matrix system. / Gfrerrer, Maria; Koss, Veronika; Wiener, Johannes et al.
In: Engineering Fracture Mechanics, Vol. 2025, No. Volume 320, 13 May, 111009, 06.03.2025.

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

TY - JOUR

T1 - Comparing Mode I, Mode II and Mixed-Mode I/II interlaminar fracture toughness of glass and carbon fiber reinforced polymer laminates with the same epoxy matrix system

AU - Gfrerrer, Maria

AU - Koss, Veronika

AU - Wiener, Johannes

AU - Schuecker, Clara

AU - Brunner, Andreas J.

AU - Pinter, Gerald

PY - 2025/3/6

Y1 - 2025/3/6

N2 - Quasi-static delamination resistance tests under Mode I, Mode II and Mixed-Mode I/II loading are performed on unidirectional (UD) glass fiber (GF) and carbon fiber (CF) reinforced polymer laminates manufactured with the same epoxy matrix. Compared to the CF-, the GF-epoxy laminate has a higher fracture toughness under all loading modes. Fracture toughnesses differ the most for Mode II and the least for Mode I loading. Mixed-Mode I/II fracture toughness is determined in Fixed-Ratio Mixed-Mode and Mixed-Mode Bending tests, performed at the same Mixed-Mode I/II ratio of 4:3. The two test methods yield comparable results for UD GF- and UD CF-epoxy.

AB - Quasi-static delamination resistance tests under Mode I, Mode II and Mixed-Mode I/II loading are performed on unidirectional (UD) glass fiber (GF) and carbon fiber (CF) reinforced polymer laminates manufactured with the same epoxy matrix. Compared to the CF-, the GF-epoxy laminate has a higher fracture toughness under all loading modes. Fracture toughnesses differ the most for Mode II and the least for Mode I loading. Mixed-Mode I/II fracture toughness is determined in Fixed-Ratio Mixed-Mode and Mixed-Mode Bending tests, performed at the same Mixed-Mode I/II ratio of 4:3. The two test methods yield comparable results for UD GF- and UD CF-epoxy.

KW - Fracture toughness

KW - Delamination resistance

KW - Glass fiber reinforced polymer laminate

KW - Carbon fiber reinforced polymer

KW - Mixed-Mode I/II

KW - Carbon fiber reinforced polymer laminate

KW - Delamination resistance

KW - Fracture toughness

KW - Glass fiber reinforced polymer laminate

KW - Mixed-Mode I/II

UR - https://www.scopus.com/pages/publications/105001867436

U2 - 10.1016/j.engfracmech.2025.111009

DO - 10.1016/j.engfracmech.2025.111009

M3 - Article

SN - 0013-7944

VL - 2025

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

IS - Volume 320, 13 May

M1 - 111009

ER -

Comparing Mode I, Mode II and Mixed-Mode I/II interlaminar fracture toughness of glass and carbon fiber reinforced polymer laminates with the same epoxy matrix system

Abstract

Bibliographical note

Keywords

Access to Document

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