Damage mechanism of hybrid composites with nonwoven carbon tissue subjected to quasi-static indentation loads

Seung Hwan Lee, Yuuta Aono, Hiroshi Noguchi, Seong Kyun Cheong

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Damage mechanisms of hybrid composites with nonwoven carbon tissue (NWCT) are investigated under a quasi-static indentation loading condition with a steel ball as an indentor. The damage level corresponds to an initial stage of damage due to an indentation loading, which leads to a strength degradation of the composite. The hybrid composites consist of the CFRP prepreg and the NWCT prepreg, which are made by interleaving the NWCT prepreg into the CFRP layer interfaces. Four kinds of cross-ply laminates are studied; i.e., CFRP laminates ([05/905/05] and [03/903/03/903/03]) and hybrid laminates ([05//905//05] and [03//903//03//903//03]). Here, the symbol "//" means that the NWCT prepreg is located at an interface between CFRP layers. The hybrid effect is examined by investigating the delamination area and the absorption energy of two cross-ply laminates. As it has been recognized that the quasi-static indentation damage agrees well with the low-velocity impact test results, the present static test results can then be used to understand the damage mechanism of low-energy impact. The damaged parts of the specimens were observed by the deply technique and the cut method which used a microscope. The NWCT interleaving's effect was clarified based on the observation of the damage for the hybrid specimen's cross-sections after indentation testing. The delamination area of the hybrid composites was reduced to about a half of the CFRP's by indentation loading. It was clarified that the Mode II interlaminar fracture is predominant in the delamination by the impact.

Original languageEnglish
Pages (from-to)333-349
Number of pages17
JournalJournal of Composite Materials
Volume37
Issue number4
DOIs
Publication statusPublished - Apr 3 2003

Fingerprint

Carbon fiber reinforced plastics
Indentation
Carbon
Laminates
Tissue
Delamination
Composite materials
Steel
Microscopes
carbon fiber reinforced plastic
Degradation
Testing

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

Cite this

Damage mechanism of hybrid composites with nonwoven carbon tissue subjected to quasi-static indentation loads. / Lee, Seung Hwan; Aono, Yuuta; Noguchi, Hiroshi; Cheong, Seong Kyun.

In: Journal of Composite Materials, Vol. 37, No. 4, 03.04.2003, p. 333-349.

Research output: Contribution to journalArticle

@article{84a6c685845947a78aadc0194a777d91,
title = "Damage mechanism of hybrid composites with nonwoven carbon tissue subjected to quasi-static indentation loads",
abstract = "Damage mechanisms of hybrid composites with nonwoven carbon tissue (NWCT) are investigated under a quasi-static indentation loading condition with a steel ball as an indentor. The damage level corresponds to an initial stage of damage due to an indentation loading, which leads to a strength degradation of the composite. The hybrid composites consist of the CFRP prepreg and the NWCT prepreg, which are made by interleaving the NWCT prepreg into the CFRP layer interfaces. Four kinds of cross-ply laminates are studied; i.e., CFRP laminates ([05/905/05] and [03/903/03/903/03]) and hybrid laminates ([05//905//05] and [03//903//03//903//03]). Here, the symbol {"}//{"} means that the NWCT prepreg is located at an interface between CFRP layers. The hybrid effect is examined by investigating the delamination area and the absorption energy of two cross-ply laminates. As it has been recognized that the quasi-static indentation damage agrees well with the low-velocity impact test results, the present static test results can then be used to understand the damage mechanism of low-energy impact. The damaged parts of the specimens were observed by the deply technique and the cut method which used a microscope. The NWCT interleaving's effect was clarified based on the observation of the damage for the hybrid specimen's cross-sections after indentation testing. The delamination area of the hybrid composites was reduced to about a half of the CFRP's by indentation loading. It was clarified that the Mode II interlaminar fracture is predominant in the delamination by the impact.",
author = "Lee, {Seung Hwan} and Yuuta Aono and Hiroshi Noguchi and Cheong, {Seong Kyun}",
year = "2003",
month = "4",
day = "3",
doi = "10.1177/0021998303037004334",
language = "English",
volume = "37",
pages = "333--349",
journal = "Journal of Composite Materials",
issn = "0021-9983",
publisher = "SAGE Publications Ltd",
number = "4",

}

TY - JOUR

T1 - Damage mechanism of hybrid composites with nonwoven carbon tissue subjected to quasi-static indentation loads

AU - Lee, Seung Hwan

AU - Aono, Yuuta

AU - Noguchi, Hiroshi

AU - Cheong, Seong Kyun

PY - 2003/4/3

Y1 - 2003/4/3

N2 - Damage mechanisms of hybrid composites with nonwoven carbon tissue (NWCT) are investigated under a quasi-static indentation loading condition with a steel ball as an indentor. The damage level corresponds to an initial stage of damage due to an indentation loading, which leads to a strength degradation of the composite. The hybrid composites consist of the CFRP prepreg and the NWCT prepreg, which are made by interleaving the NWCT prepreg into the CFRP layer interfaces. Four kinds of cross-ply laminates are studied; i.e., CFRP laminates ([05/905/05] and [03/903/03/903/03]) and hybrid laminates ([05//905//05] and [03//903//03//903//03]). Here, the symbol "//" means that the NWCT prepreg is located at an interface between CFRP layers. The hybrid effect is examined by investigating the delamination area and the absorption energy of two cross-ply laminates. As it has been recognized that the quasi-static indentation damage agrees well with the low-velocity impact test results, the present static test results can then be used to understand the damage mechanism of low-energy impact. The damaged parts of the specimens were observed by the deply technique and the cut method which used a microscope. The NWCT interleaving's effect was clarified based on the observation of the damage for the hybrid specimen's cross-sections after indentation testing. The delamination area of the hybrid composites was reduced to about a half of the CFRP's by indentation loading. It was clarified that the Mode II interlaminar fracture is predominant in the delamination by the impact.

AB - Damage mechanisms of hybrid composites with nonwoven carbon tissue (NWCT) are investigated under a quasi-static indentation loading condition with a steel ball as an indentor. The damage level corresponds to an initial stage of damage due to an indentation loading, which leads to a strength degradation of the composite. The hybrid composites consist of the CFRP prepreg and the NWCT prepreg, which are made by interleaving the NWCT prepreg into the CFRP layer interfaces. Four kinds of cross-ply laminates are studied; i.e., CFRP laminates ([05/905/05] and [03/903/03/903/03]) and hybrid laminates ([05//905//05] and [03//903//03//903//03]). Here, the symbol "//" means that the NWCT prepreg is located at an interface between CFRP layers. The hybrid effect is examined by investigating the delamination area and the absorption energy of two cross-ply laminates. As it has been recognized that the quasi-static indentation damage agrees well with the low-velocity impact test results, the present static test results can then be used to understand the damage mechanism of low-energy impact. The damaged parts of the specimens were observed by the deply technique and the cut method which used a microscope. The NWCT interleaving's effect was clarified based on the observation of the damage for the hybrid specimen's cross-sections after indentation testing. The delamination area of the hybrid composites was reduced to about a half of the CFRP's by indentation loading. It was clarified that the Mode II interlaminar fracture is predominant in the delamination by the impact.

UR - http://www.scopus.com/inward/record.url?scp=0037243139&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037243139&partnerID=8YFLogxK

U2 - 10.1177/0021998303037004334

DO - 10.1177/0021998303037004334

M3 - Article

VL - 37

SP - 333

EP - 349

JO - Journal of Composite Materials

JF - Journal of Composite Materials

SN - 0021-9983

IS - 4

ER -