Experimental strength and fracture analysis of additively manufactured continuous carbon fibre reinforced lugs with load-tailored fibre placement

Stefan Sieberer; Markus Winklberger; Chethan Savandaiah; Christoph Kralovec; Martin Schagerl

Experimental strength and fracture analysis of additively manufactured continuous carbon fibre reinforced lugs with load-tailored fibre placement

Stefan Sieberer, Markus Winklberger, Chethan Savandaiah, Christoph Kralovec, Martin Schagerl

Institute of Structural Lightweight Design

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

Abstract

Additive manufacturing (AM) using continuous carbon fibre (CCF) has facilitated the use of carbon fibre reinforced polymers (CFRP) with AM in structural parts. This paper focusses on the static behaviour of AM CCF lugs printed to an optimised fibre lay- up and with two different CCF fibre volume fractions φ, originating from variation of the layer height. Experimental testing using full field surface strain measurement is performed. The part strength, bearing stiffness, and shaft stiffness values are evaluated. The most significant benefit is gained in part strength, an increase by 61% with increase in φ from 0.27 to 0.37. The stiffness values are increased to a lesser degree. Fracture behaviour is shown to be fibre fracture dominated in the net section, and linear strain increase is reported until failure. These results show the potential of this technology for structural parts, and give the experimental base for strength and stiffness design optimisations in AM CCF lugs.

Original language	English
Title of host publication	Procedia Structural Integrity 42
Number of pages	8
Publication status	Published - 2022

Fields of science

203 Mechanical Engineering
203003 Fracture mechanics
203007 Strength of materials
203012 Aerospace engineering
203015 Mechatronics
203022 Technical mechanics
203034 Continuum mechanics
205016 Materials testing
201117 Lightweight design
203002 Endurance strength
203004 Automotive technology
203011 Lightweight design
205015 Composites
211905 Bionics

JKU Focus areas

Sustainable Development: Responsible Technologies and Management

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Cite this

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title = "Experimental strength and fracture analysis of additively manufactured continuous carbon fibre reinforced lugs with load-tailored fibre placement",

abstract = "Additive manufacturing (AM) using continuous carbon fibre (CCF) has facilitated the use of carbon fibre reinforced polymers (CFRP) with AM in structural parts. This paper focusses on the static behaviour of AM CCF lugs printed to an optimised fibre lay- up and with two different CCF fibre volume fractions φ, originating from variation of the layer height. Experimental testing using full field surface strain measurement is performed. The part strength, bearing stiffness, and shaft stiffness values are evaluated. The most significant benefit is gained in part strength, an increase by 61% with increase in φ from 0.27 to 0.37. The stiffness values are increased to a lesser degree. Fracture behaviour is shown to be fibre fracture dominated in the net section, and linear strain increase is reported until failure. These results show the potential of this technology for structural parts, and give the experimental base for strength and stiffness design optimisations in AM CCF lugs.",

author = "Stefan Sieberer and Markus Winklberger and Chethan Savandaiah and Christoph Kralovec and Martin Schagerl",

year = "2022",

language = "English",

booktitle = "Procedia Structural Integrity 42",

}

TY - GEN

T1 - Experimental strength and fracture analysis of additively manufactured continuous carbon fibre reinforced lugs with load-tailored fibre placement

AU - Sieberer, Stefan

AU - Winklberger, Markus

AU - Savandaiah, Chethan

AU - Kralovec, Christoph

AU - Schagerl, Martin

PY - 2022

Y1 - 2022

N2 - Additive manufacturing (AM) using continuous carbon fibre (CCF) has facilitated the use of carbon fibre reinforced polymers (CFRP) with AM in structural parts. This paper focusses on the static behaviour of AM CCF lugs printed to an optimised fibre lay- up and with two different CCF fibre volume fractions φ, originating from variation of the layer height. Experimental testing using full field surface strain measurement is performed. The part strength, bearing stiffness, and shaft stiffness values are evaluated. The most significant benefit is gained in part strength, an increase by 61% with increase in φ from 0.27 to 0.37. The stiffness values are increased to a lesser degree. Fracture behaviour is shown to be fibre fracture dominated in the net section, and linear strain increase is reported until failure. These results show the potential of this technology for structural parts, and give the experimental base for strength and stiffness design optimisations in AM CCF lugs.

AB - Additive manufacturing (AM) using continuous carbon fibre (CCF) has facilitated the use of carbon fibre reinforced polymers (CFRP) with AM in structural parts. This paper focusses on the static behaviour of AM CCF lugs printed to an optimised fibre lay- up and with two different CCF fibre volume fractions φ, originating from variation of the layer height. Experimental testing using full field surface strain measurement is performed. The part strength, bearing stiffness, and shaft stiffness values are evaluated. The most significant benefit is gained in part strength, an increase by 61% with increase in φ from 0.27 to 0.37. The stiffness values are increased to a lesser degree. Fracture behaviour is shown to be fibre fracture dominated in the net section, and linear strain increase is reported until failure. These results show the potential of this technology for structural parts, and give the experimental base for strength and stiffness design optimisations in AM CCF lugs.

M3 - Conference proceedings

BT - Procedia Structural Integrity 42

ER -