A Modified Shear Torsion Bending Test for Mode-III Fracture Toughness Measurements of Face/Core Interfaces in Sandwich Composites

Lujin Lin; Christian Berggreen; Brian Nyvang Legarth; Pietro Sabbadin

A Modified Shear Torsion Bending Test for Mode-III Fracture Toughness Measurements of Face/Core Interfaces in Sandwich Composites

Lujin Lin^*
, Christian Berggreen
, Brian Nyvang Legarth
, Pietro Sabbadin

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

This work presents mode-III fracture toughness measurement of sandwich composites by implementing the modified Shear-Torsion-Bending (STB) test fixture and method. Fracture mechanical analysis shows that the modified test fixture increases the mode-III distribution along the crack front. The specimens were made from GFRP face sheets and PVC foam core materials. The effect of the core density and core thickness was studied. The test results show that stable crack growth was observed using the modified STB method. The critical fracture loads were identified as input to a FE model with fracture mechanical analysis routines, to calculate the mode-III dominated fracture toughness along the crack front.

Original language	English
Title of host publication	ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability
Editors	Anastasios P. Vassilopoulos, Veronique Michaud
Publisher	École Polytechnique Fédérale de Lausanne
Publication date	2022
Pages	14-16
ISBN (Electronic)	978-297016140-0
Publication status	Published - 2022
Event	20th European Conference on Composite Materials - Lausanne, Switzerland Duration: 26 Jun 2022 → 30 Jun 2022 Conference number: 20

Conference

Conference	20th European Conference on Composite Materials
Number	20
Country/Territory	Switzerland
City	Lausanne
Period	26/06/2022 → 30/06/2022

Keywords

CSDE method
Mode-III fracture toughness
Modified STB
Sandwich structures

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Lin, L., Berggreen, C., Legarth, B. N., & Sabbadin, P. (2022). A Modified Shear Torsion Bending Test for Mode-III Fracture Toughness Measurements of Face/Core Interfaces in Sandwich Composites. In A. P. Vassilopoulos, & V. Michaud (Eds.), ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability (pp. 14-16). École Polytechnique Fédérale de Lausanne.

Lin, Lujin ; Berggreen, Christian ; Legarth, Brian Nyvang et al. / A Modified Shear Torsion Bending Test for Mode-III Fracture Toughness Measurements of Face/Core Interfaces in Sandwich Composites. ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability. editor / Anastasios P. Vassilopoulos ; Veronique Michaud. École Polytechnique Fédérale de Lausanne, 2022. pp. 14-16

@inproceedings{26f86b205c51464db916797ad98bed24,

title = "A Modified Shear Torsion Bending Test for Mode-III Fracture Toughness Measurements of Face/Core Interfaces in Sandwich Composites",

abstract = "This work presents mode-III fracture toughness measurement of sandwich composites by implementing the modified Shear-Torsion-Bending (STB) test fixture and method. Fracture mechanical analysis shows that the modified test fixture increases the mode-III distribution along the crack front. The specimens were made from GFRP face sheets and PVC foam core materials. The effect of the core density and core thickness was studied. The test results show that stable crack growth was observed using the modified STB method. The critical fracture loads were identified as input to a FE model with fracture mechanical analysis routines, to calculate the mode-III dominated fracture toughness along the crack front.",

keywords = "CSDE method, Mode-III fracture toughness, Modified STB, Sandwich structures",

author = "Lujin Lin and Christian Berggreen and Legarth, \{Brian Nyvang\} and Pietro Sabbadin",

note = "Publisher Copyright: {\textcopyright}2022 Lin et al.; 20th European Conference on Composite Materials, ECCM20 ; Conference date: 26-06-2022 Through 30-06-2022",

year = "2022",

language = "English",

pages = "14--16",

editor = "Vassilopoulos, \{Anastasios P.\} and Veronique Michaud",

booktitle = "ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability",

publisher = "{\'E}cole Polytechnique F{\'e}d{\'e}rale de Lausanne",

}

Lin, L, Berggreen, C , Legarth, BN & Sabbadin, P 2022, A Modified Shear Torsion Bending Test for Mode-III Fracture Toughness Measurements of Face/Core Interfaces in Sandwich Composites. in AP Vassilopoulos & V Michaud (eds), ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability. École Polytechnique Fédérale de Lausanne, pp. 14-16, 20th European Conference on Composite Materials, Lausanne, Switzerland, 26/06/2022.

A Modified Shear Torsion Bending Test for Mode-III Fracture Toughness Measurements of Face/Core Interfaces in Sandwich Composites. / Lin, Lujin; Berggreen, Christian ; Legarth, Brian Nyvang et al.
ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability. ed. / Anastasios P. Vassilopoulos; Veronique Michaud. École Polytechnique Fédérale de Lausanne, 2022. p. 14-16.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - A Modified Shear Torsion Bending Test for Mode-III Fracture Toughness Measurements of Face/Core Interfaces in Sandwich Composites

AU - Lin, Lujin

AU - Berggreen, Christian

AU - Legarth, Brian Nyvang

AU - Sabbadin, Pietro

N1 - Conference code: 20

PY - 2022

Y1 - 2022

N2 - This work presents mode-III fracture toughness measurement of sandwich composites by implementing the modified Shear-Torsion-Bending (STB) test fixture and method. Fracture mechanical analysis shows that the modified test fixture increases the mode-III distribution along the crack front. The specimens were made from GFRP face sheets and PVC foam core materials. The effect of the core density and core thickness was studied. The test results show that stable crack growth was observed using the modified STB method. The critical fracture loads were identified as input to a FE model with fracture mechanical analysis routines, to calculate the mode-III dominated fracture toughness along the crack front.

AB - This work presents mode-III fracture toughness measurement of sandwich composites by implementing the modified Shear-Torsion-Bending (STB) test fixture and method. Fracture mechanical analysis shows that the modified test fixture increases the mode-III distribution along the crack front. The specimens were made from GFRP face sheets and PVC foam core materials. The effect of the core density and core thickness was studied. The test results show that stable crack growth was observed using the modified STB method. The critical fracture loads were identified as input to a FE model with fracture mechanical analysis routines, to calculate the mode-III dominated fracture toughness along the crack front.

KW - CSDE method

KW - Mode-III fracture toughness

KW - Modified STB

KW - Sandwich structures

M3 - Article in proceedings

AN - SCOPUS:85149290846

SP - 14

EP - 16

BT - ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability

A2 - Vassilopoulos, Anastasios P.

A2 - Michaud, Veronique

PB - École Polytechnique Fédérale de Lausanne

T2 - 20th European Conference on Composite Materials

Y2 - 26 June 2022 through 30 June 2022

ER -

Lin L, Berggreen C , Legarth BN, Sabbadin P. A Modified Shear Torsion Bending Test for Mode-III Fracture Toughness Measurements of Face/Core Interfaces in Sandwich Composites. In Vassilopoulos AP, Michaud V, editors, ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability. École Polytechnique Fédérale de Lausanne. 2022. p. 14-16

A Modified Shear Torsion Bending Test for Mode-III Fracture Toughness Measurements of Face/Core Interfaces in Sandwich Composites

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Keywords

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