Measurement of fracture toughness for fiber compressive failure mode of UD composites under high rate loading

P. Kuhn; G. Catalanotti; José Xavier; R. Cidade; H. Koerber; P.P.  Camanho

Measurement of fracture toughness for fiber compressive failure mode of UD composites under high rate loading

P. Kuhn
, G. Catalanotti
, José Xavier
, R. Cidade
, H. Koerber
, P.P. Camanho

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This work presents an experimental study of the compressive crack resistance curve of an unidirectional composite when submitted to dynamic loading. The data reduction couples the concepts of energy release rate, size effect law and R-curve. Double-edge notched specimens of four different sizes are used. Both split-Hopkinson pressure bar and quasi-static reference tests are performed. Under dynamic loading, the same strain rate is used for all specimen types to enable a reliable determination of the size effect. The full crack resistance curves at both investigated strain rate regimes are obtained on the basis of quasi-static fracture analysis theory. The results show that the steady state fracture toughness of the fiber compressive failure mode of the unidirectional carbon-epoxy composite material IM7-8552 is 165.6 kJ/m² and 101.6 kJ/m² under dynamic and quasi-static loading, respectively. Therefore the compressive fracture toughness is found to increase with increasing strain rate.

Original language	English
Title of host publication	ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials
Publisher	European Conference on Composite Materials, ECCM
ISBN (Electronic)	9783000533877
Publication status	Published - 2016
Externally published	Yes
Event	17th European Conference on Composite Materials, ECCM 2016 - Munich, Germany Duration: 26 Jun 2016 → 30 Jun 2016

Conference

Conference	17th European Conference on Composite Materials, ECCM 2016
Country/Territory	Germany
City	Munich
Period	26/06/2016 → 30/06/2016

Keywords

Experimental techniques
Fracture toughness
High strain rate loading

ASJC Scopus subject areas

Ceramics and Composites

Cite this

@inproceedings{db0b620982aa44248ada8111570ba3e6,

title = "Measurement of fracture toughness for fiber compressive failure mode of UD composites under high rate loading",

abstract = "This work presents an experimental study of the compressive crack resistance curve of an unidirectional composite when submitted to dynamic loading. The data reduction couples the concepts of energy release rate, size effect law and R-curve. Double-edge notched specimens of four different sizes are used. Both split-Hopkinson pressure bar and quasi-static reference tests are performed. Under dynamic loading, the same strain rate is used for all specimen types to enable a reliable determination of the size effect. The full crack resistance curves at both investigated strain rate regimes are obtained on the basis of quasi-static fracture analysis theory. The results show that the steady state fracture toughness of the fiber compressive failure mode of the unidirectional carbon-epoxy composite material IM7-8552 is 165.6 kJ/m2 and 101.6 kJ/m2 under dynamic and quasi-static loading, respectively. Therefore the compressive fracture toughness is found to increase with increasing strain rate.",

keywords = "Experimental techniques, Fracture toughness, High strain rate loading",

author = "P. Kuhn and G. Catalanotti and Jos{\'e} Xavier and R. Cidade and H. Koerber and P.P. Camanho",

year = "2016",

language = "English",

booktitle = "ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials",

publisher = "European Conference on Composite Materials, ECCM",

note = "17th European Conference on Composite Materials, ECCM 2016 ; Conference date: 26-06-2016 Through 30-06-2016",

}

Kuhn, P, Catalanotti, G, Xavier, J, Cidade, R, Koerber, H & Camanho, PP 2016, Measurement of fracture toughness for fiber compressive failure mode of UD composites under high rate loading. in ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials. European Conference on Composite Materials, ECCM, 17th European Conference on Composite Materials, ECCM 2016, Munich, Germany, 26/06/2016.

Measurement of fracture toughness for fiber compressive failure mode of UD composites under high rate loading. / Kuhn, P.; Catalanotti, G.; Xavier, José et al.
ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials. European Conference on Composite Materials, ECCM, 2016.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Measurement of fracture toughness for fiber compressive failure mode of UD composites under high rate loading

AU - Kuhn, P.

AU - Catalanotti, G.

AU - Xavier, José

AU - Cidade, R.

AU - Koerber, H.

AU - Camanho, P.P.

PY - 2016

Y1 - 2016

N2 - This work presents an experimental study of the compressive crack resistance curve of an unidirectional composite when submitted to dynamic loading. The data reduction couples the concepts of energy release rate, size effect law and R-curve. Double-edge notched specimens of four different sizes are used. Both split-Hopkinson pressure bar and quasi-static reference tests are performed. Under dynamic loading, the same strain rate is used for all specimen types to enable a reliable determination of the size effect. The full crack resistance curves at both investigated strain rate regimes are obtained on the basis of quasi-static fracture analysis theory. The results show that the steady state fracture toughness of the fiber compressive failure mode of the unidirectional carbon-epoxy composite material IM7-8552 is 165.6 kJ/m2 and 101.6 kJ/m2 under dynamic and quasi-static loading, respectively. Therefore the compressive fracture toughness is found to increase with increasing strain rate.

AB - This work presents an experimental study of the compressive crack resistance curve of an unidirectional composite when submitted to dynamic loading. The data reduction couples the concepts of energy release rate, size effect law and R-curve. Double-edge notched specimens of four different sizes are used. Both split-Hopkinson pressure bar and quasi-static reference tests are performed. Under dynamic loading, the same strain rate is used for all specimen types to enable a reliable determination of the size effect. The full crack resistance curves at both investigated strain rate regimes are obtained on the basis of quasi-static fracture analysis theory. The results show that the steady state fracture toughness of the fiber compressive failure mode of the unidirectional carbon-epoxy composite material IM7-8552 is 165.6 kJ/m2 and 101.6 kJ/m2 under dynamic and quasi-static loading, respectively. Therefore the compressive fracture toughness is found to increase with increasing strain rate.

KW - Experimental techniques

KW - Fracture toughness

KW - High strain rate loading

UR - https://www.scopus.com/pages/publications/85018551167

M3 - Conference contribution

AN - SCOPUS:85018551167

BT - ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials

PB - European Conference on Composite Materials, ECCM

T2 - 17th European Conference on Composite Materials, ECCM 2016

Y2 - 26 June 2016 through 30 June 2016

ER -

Measurement of fracture toughness for fiber compressive failure mode of UD composites under high rate loading

Abstract

Conference

Keywords

ASJC Scopus subject areas

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