Effects of stitch density and stitch thread thickness on mode II delamination properties of Vectran stitched composites

J. Herwan; A. Kondo; S. Morooka; N. Watanabe

doi:10.1179/1743289814y.0000000103

Effects of stitch density and stitch thread thickness on mode II delamination properties of Vectran stitched composites

J. Herwan, A. Kondo, S. Morooka, N. Watanabe

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16 Scopus citations

Abstract

© Institute of Materials, Minerals and Mining 2014. Mode II delamination properties of Vectran stitched composites were investigated, and tabbed end notch flexural specimen testing was used to prevent premature failure. The effects of stitch density and stitch thread thickness were explored, and fibre compaction due to the stitching process was also verified. The results show that, in moderately stitched laminates (low stitch density), the improvement in GIIC was negligible. Crack bridging by the stitch threads at the crack zone were mostly compensated for the effect of fibre compaction, which reduced the GIIC values. Conversely, in densely stitched laminates (high stitch density), GIIC values were improved significantly (2·4 times higher than those of unstitched laminates). The effects of stitch thread thickness appeared to be negligible in moderately stitched laminates. For densely stitched laminates, thicker stitch thread (500 denier) possessed GIIC values that were 45·7% higher than thinner stitch thread (200 denier).

Original language	English (US)
Pages (from-to)	300-308
Number of pages	9
Journal	Plastics, Rubber and Composites
Volume	43
Issue number	9
DOIs	https://doi.org/10.1179/1743289814y.0000000103
State	Published - Sep 24 2014
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors gratefully acknowledge Tokyo Metropolitan Government for its financial support from the Asian Human Resources Fund and Asian Network of Major Cities 21 (ANMC-21) Project. Special gratitude is extended to Professor L. A. Carlsson (Florida Atlantic University) for helpful discussion concerning the compliance calibration method, Dr A. Yudhanto (currently at King Abdullah University of Science and Technology) for guidance during our stay at Tokyo Metropolitan University, Dr H. Hoshi (Japan Aerospace Exploration Agency) for valuable input on this work and Mr P. Joshi for correcting the language of this manuscript.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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title = "Effects of stitch density and stitch thread thickness on mode II delamination properties of Vectran stitched composites",

abstract = "{\textcopyright} Institute of Materials, Minerals and Mining 2014. Mode II delamination properties of Vectran stitched composites were investigated, and tabbed end notch flexural specimen testing was used to prevent premature failure. The effects of stitch density and stitch thread thickness were explored, and fibre compaction due to the stitching process was also verified. The results show that, in moderately stitched laminates (low stitch density), the improvement in GIIC was negligible. Crack bridging by the stitch threads at the crack zone were mostly compensated for the effect of fibre compaction, which reduced the GIIC values. Conversely, in densely stitched laminates (high stitch density), GIIC values were improved significantly (2·4 times higher than those of unstitched laminates). The effects of stitch thread thickness appeared to be negligible in moderately stitched laminates. For densely stitched laminates, thicker stitch thread (500 denier) possessed GIIC values that were 45·7% higher than thinner stitch thread (200 denier).",

author = "J. Herwan and A. Kondo and S. Morooka and N. Watanabe",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors gratefully acknowledge Tokyo Metropolitan Government for its financial support from the Asian Human Resources Fund and Asian Network of Major Cities 21 (ANMC-21) Project. Special gratitude is extended to Professor L. A. Carlsson (Florida Atlantic University) for helpful discussion concerning the compliance calibration method, Dr A. Yudhanto (currently at King Abdullah University of Science and Technology) for guidance during our stay at Tokyo Metropolitan University, Dr H. Hoshi (Japan Aerospace Exploration Agency) for valuable input on this work and Mr P. Joshi for correcting the language of this manuscript. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2014",

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doi = "10.1179/1743289814y.0000000103",

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T1 - Effects of stitch density and stitch thread thickness on mode II delamination properties of Vectran stitched composites

AU - Herwan, J.

AU - Kondo, A.

AU - Morooka, S.

AU - Watanabe, N.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors gratefully acknowledge Tokyo Metropolitan Government for its financial support from the Asian Human Resources Fund and Asian Network of Major Cities 21 (ANMC-21) Project. Special gratitude is extended to Professor L. A. Carlsson (Florida Atlantic University) for helpful discussion concerning the compliance calibration method, Dr A. Yudhanto (currently at King Abdullah University of Science and Technology) for guidance during our stay at Tokyo Metropolitan University, Dr H. Hoshi (Japan Aerospace Exploration Agency) for valuable input on this work and Mr P. Joshi for correcting the language of this manuscript. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2014/9/24

Y1 - 2014/9/24

N2 - © Institute of Materials, Minerals and Mining 2014. Mode II delamination properties of Vectran stitched composites were investigated, and tabbed end notch flexural specimen testing was used to prevent premature failure. The effects of stitch density and stitch thread thickness were explored, and fibre compaction due to the stitching process was also verified. The results show that, in moderately stitched laminates (low stitch density), the improvement in GIIC was negligible. Crack bridging by the stitch threads at the crack zone were mostly compensated for the effect of fibre compaction, which reduced the GIIC values. Conversely, in densely stitched laminates (high stitch density), GIIC values were improved significantly (2·4 times higher than those of unstitched laminates). The effects of stitch thread thickness appeared to be negligible in moderately stitched laminates. For densely stitched laminates, thicker stitch thread (500 denier) possessed GIIC values that were 45·7% higher than thinner stitch thread (200 denier).

AB - © Institute of Materials, Minerals and Mining 2014. Mode II delamination properties of Vectran stitched composites were investigated, and tabbed end notch flexural specimen testing was used to prevent premature failure. The effects of stitch density and stitch thread thickness were explored, and fibre compaction due to the stitching process was also verified. The results show that, in moderately stitched laminates (low stitch density), the improvement in GIIC was negligible. Crack bridging by the stitch threads at the crack zone were mostly compensated for the effect of fibre compaction, which reduced the GIIC values. Conversely, in densely stitched laminates (high stitch density), GIIC values were improved significantly (2·4 times higher than those of unstitched laminates). The effects of stitch thread thickness appeared to be negligible in moderately stitched laminates. For densely stitched laminates, thicker stitch thread (500 denier) possessed GIIC values that were 45·7% higher than thinner stitch thread (200 denier).

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JF - Plastics, Rubber and Composites

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ER -

Effects of stitch density and stitch thread thickness on mode II delamination properties of Vectran stitched composites

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