The effect of strain rate on the orientation of the fracture plane in a unidirectional polymer matrix composite under transverse compression loading

Michael May; Noah Ledford; Matti Isakov; Philipp Hahn; Hanna Paul; Sumito Nagasawa

doi:10.1016/j.compositesa.2020.106057

The effect of strain rate on the orientation of the fracture plane in a unidirectional polymer matrix composite under transverse compression loading

Michael May, Noah Ledford, Matti Isakov, Philipp Hahn, Hanna Paul, Sumito Nagasawa

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

7 Citations (Scopus)

Abstract

Transverse compression tests on a unidirectional composite were performed under quasi-static and high-rate loading conditions using servo-hydraulic machines as well as a direct impact Hopkinson bar. Aside the expected increase of compressive strength with increasing loading rate, a change of fracture plane orientation was observed. For quasi-static loading conditions, the fracture angle was 54.5°, for high rate-loading conditions this increased to 65°. Assuming a Mohr-Coulomb type of fracture for unidirectional composites under transverse compression loading, the change of fracture plane orientation indicates a rate dependency of the internal friction angle ϕ, which has not previously been reported for composite materials.

Original language	English
Article number	106057
Journal	Composites Part A: Applied Science and Manufacturing
Volume	138
DOIs	https://doi.org/10.1016/j.compositesa.2020.106057
Publication status	Published - 2020 Nov
Externally published	Yes

Keywords

A. Polymer-matrix composites (PMC)
B. Fracture
B. Impact behaviour
D. Mechanical testing
Hopkinson Pressure Bar

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials

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10.1016/j.compositesa.2020.106057

Cite this

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title = "The effect of strain rate on the orientation of the fracture plane in a unidirectional polymer matrix composite under transverse compression loading",

abstract = "Transverse compression tests on a unidirectional composite were performed under quasi-static and high-rate loading conditions using servo-hydraulic machines as well as a direct impact Hopkinson bar. Aside the expected increase of compressive strength with increasing loading rate, a change of fracture plane orientation was observed. For quasi-static loading conditions, the fracture angle was 54.5°, for high rate-loading conditions this increased to 65°. Assuming a Mohr-Coulomb type of fracture for unidirectional composites under transverse compression loading, the change of fracture plane orientation indicates a rate dependency of the internal friction angle ϕ, which has not previously been reported for composite materials.",

keywords = "A. Polymer-matrix composites (PMC), B. Fracture, B. Impact behaviour, D. Mechanical testing, Hopkinson Pressure Bar",

author = "Michael May and Noah Ledford and Matti Isakov and Philipp Hahn and Hanna Paul and Sumito Nagasawa",

note = "Funding Information: The authors thank SUBARU CORPORATION for the funding of this research. Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

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doi = "10.1016/j.compositesa.2020.106057",

language = "English",

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journal = "Composites - Part A: Applied Science and Manufacturing",

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AU - May, Michael

AU - Ledford, Noah

AU - Isakov, Matti

AU - Hahn, Philipp

AU - Paul, Hanna

AU - Nagasawa, Sumito

PY - 2020/11

Y1 - 2020/11

N2 - Transverse compression tests on a unidirectional composite were performed under quasi-static and high-rate loading conditions using servo-hydraulic machines as well as a direct impact Hopkinson bar. Aside the expected increase of compressive strength with increasing loading rate, a change of fracture plane orientation was observed. For quasi-static loading conditions, the fracture angle was 54.5°, for high rate-loading conditions this increased to 65°. Assuming a Mohr-Coulomb type of fracture for unidirectional composites under transverse compression loading, the change of fracture plane orientation indicates a rate dependency of the internal friction angle ϕ, which has not previously been reported for composite materials.

AB - Transverse compression tests on a unidirectional composite were performed under quasi-static and high-rate loading conditions using servo-hydraulic machines as well as a direct impact Hopkinson bar. Aside the expected increase of compressive strength with increasing loading rate, a change of fracture plane orientation was observed. For quasi-static loading conditions, the fracture angle was 54.5°, for high rate-loading conditions this increased to 65°. Assuming a Mohr-Coulomb type of fracture for unidirectional composites under transverse compression loading, the change of fracture plane orientation indicates a rate dependency of the internal friction angle ϕ, which has not previously been reported for composite materials.

KW - A. Polymer-matrix composites (PMC)

KW - B. Fracture

KW - B. Impact behaviour

KW - D. Mechanical testing

KW - Hopkinson Pressure Bar

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The effect of strain rate on the orientation of the fracture plane in a unidirectional polymer matrix composite under transverse compression loading

Abstract

Keywords

ASJC Scopus subject areas

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