Characterizing the influence of matrix ductility on damage phenomenology in continuous fiber-reinforced thermoplastic laminates undergoing quasi-static indentation

A. Yudhanto; H. Wafai; G. Lubineau; R. Yaldiz; N. Verghese

doi:10.1016/j.compstruct.2017.12.028

Characterizing the influence of matrix ductility on damage phenomenology in continuous fiber-reinforced thermoplastic laminates undergoing quasi-static indentation

A. Yudhanto^*, H. Wafai, G. Lubineau, R. Yaldiz, N. Verghese

^*Corresponding author for this work

Physical Sciences and Engineering

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

34 Scopus citations

Abstract

The use of thermoplastic matrix was known to improve the impact properties of laminated composites. However, different ductility levels can exist in a single family of thermoplastic matrix, and this may consequently modify the damage phenomenology of thermoplastic composites. This paper focuses on the effect of matrix ductility on the out-of-plane properties of thermoplastic composites, which was studied through quasi-static indentation (QSI) test that may represent impact problem albeit the speed difference. We evaluated continuous glass-fiber reinforced polypropylene thermoplastic composites (GFPP), and selected homopolymer PP and copolymer PP that represent ductile and less ductile matrices, respectively. Several cross-ply laminates were selected to study the influence of ply thicknesses and relative orientation of interfaces on QSI properties of GFPP. It is expected that GFPP with ductile matrix improves energy absorption of GFPP. However, the damage mechanism is completely different between GFPP with ductile and GFPP with less ductile matrices. GFPP with ductile matrix exhibits smaller damage zone in comparison to the one with less ductile matrix. Higher matrix ductility inhibits the growth of ply cracking along the fiber, and this causes the limited size of delamination. The stacking sequence poses more influence on less ductile composites rather than the ductile one.

Original language	English (US)
Pages (from-to)	324-334
Number of pages	11
Journal	Composite Structures
Volume	186
DOIs	https://doi.org/10.1016/j.compstruct.2017.12.028
State	Published - Feb 15 2018

Bibliographical note

Funding Information:
The research reported in this publication was supported by SABIC and by the King Abdullah University of Science and Technology ( KAUST ). We thank Mr. Warden Schijve (SABIC) and Mr. Ditho Pulungan (COHMAS, KAUST) for the discussion, Mr. Ran Tao (COHMAS, KAUST) for assisting with the dent-depth measurement, Dr. Lutfan Sinatra (Functional Nanomaterial Laboratory, KAUST) for assisting with the burn-off test and Mr. Shiva Goutham (COHMAS, KAUST) for assisting with the tensile tests, Mr. Guillaume Ratouit (SABIC) and Mr. Rob Marrees (SABIC) for assisting with C-scan.

Publisher Copyright:
© 2017 Elsevier Ltd

Keywords

A. Polymer-matrix composites (PMCs)
A. Thermoplastic resin
B. Delamination
D. Mechanical testing

ASJC Scopus subject areas

Ceramics and Composites
Civil and Structural Engineering

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10.1016/j.compstruct.2017.12.028

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title = "Characterizing the influence of matrix ductility on damage phenomenology in continuous fiber-reinforced thermoplastic laminates undergoing quasi-static indentation",

abstract = "The use of thermoplastic matrix was known to improve the impact properties of laminated composites. However, different ductility levels can exist in a single family of thermoplastic matrix, and this may consequently modify the damage phenomenology of thermoplastic composites. This paper focuses on the effect of matrix ductility on the out-of-plane properties of thermoplastic composites, which was studied through quasi-static indentation (QSI) test that may represent impact problem albeit the speed difference. We evaluated continuous glass-fiber reinforced polypropylene thermoplastic composites (GFPP), and selected homopolymer PP and copolymer PP that represent ductile and less ductile matrices, respectively. Several cross-ply laminates were selected to study the influence of ply thicknesses and relative orientation of interfaces on QSI properties of GFPP. It is expected that GFPP with ductile matrix improves energy absorption of GFPP. However, the damage mechanism is completely different between GFPP with ductile and GFPP with less ductile matrices. GFPP with ductile matrix exhibits smaller damage zone in comparison to the one with less ductile matrix. Higher matrix ductility inhibits the growth of ply cracking along the fiber, and this causes the limited size of delamination. The stacking sequence poses more influence on less ductile composites rather than the ductile one.",

keywords = "A. Polymer-matrix composites (PMCs), A. Thermoplastic resin, B. Delamination, D. Mechanical testing",

author = "A. Yudhanto and H. Wafai and G. Lubineau and R. Yaldiz and N. Verghese",

note = "Funding Information: The research reported in this publication was supported by SABIC and by the King Abdullah University of Science and Technology ( KAUST ). We thank Mr. Warden Schijve (SABIC) and Mr. Ditho Pulungan (COHMAS, KAUST) for the discussion, Mr. Ran Tao (COHMAS, KAUST) for assisting with the dent-depth measurement, Dr. Lutfan Sinatra (Functional Nanomaterial Laboratory, KAUST) for assisting with the burn-off test and Mr. Shiva Goutham (COHMAS, KAUST) for assisting with the tensile tests, Mr. Guillaume Ratouit (SABIC) and Mr. Rob Marrees (SABIC) for assisting with C-scan. Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

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doi = "10.1016/j.compstruct.2017.12.028",

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AU - Yaldiz, R.

AU - Verghese, N.

N1 - Funding Information: The research reported in this publication was supported by SABIC and by the King Abdullah University of Science and Technology ( KAUST ). We thank Mr. Warden Schijve (SABIC) and Mr. Ditho Pulungan (COHMAS, KAUST) for the discussion, Mr. Ran Tao (COHMAS, KAUST) for assisting with the dent-depth measurement, Dr. Lutfan Sinatra (Functional Nanomaterial Laboratory, KAUST) for assisting with the burn-off test and Mr. Shiva Goutham (COHMAS, KAUST) for assisting with the tensile tests, Mr. Guillaume Ratouit (SABIC) and Mr. Rob Marrees (SABIC) for assisting with C-scan. Publisher Copyright: © 2017 Elsevier Ltd

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N2 - The use of thermoplastic matrix was known to improve the impact properties of laminated composites. However, different ductility levels can exist in a single family of thermoplastic matrix, and this may consequently modify the damage phenomenology of thermoplastic composites. This paper focuses on the effect of matrix ductility on the out-of-plane properties of thermoplastic composites, which was studied through quasi-static indentation (QSI) test that may represent impact problem albeit the speed difference. We evaluated continuous glass-fiber reinforced polypropylene thermoplastic composites (GFPP), and selected homopolymer PP and copolymer PP that represent ductile and less ductile matrices, respectively. Several cross-ply laminates were selected to study the influence of ply thicknesses and relative orientation of interfaces on QSI properties of GFPP. It is expected that GFPP with ductile matrix improves energy absorption of GFPP. However, the damage mechanism is completely different between GFPP with ductile and GFPP with less ductile matrices. GFPP with ductile matrix exhibits smaller damage zone in comparison to the one with less ductile matrix. Higher matrix ductility inhibits the growth of ply cracking along the fiber, and this causes the limited size of delamination. The stacking sequence poses more influence on less ductile composites rather than the ductile one.

AB - The use of thermoplastic matrix was known to improve the impact properties of laminated composites. However, different ductility levels can exist in a single family of thermoplastic matrix, and this may consequently modify the damage phenomenology of thermoplastic composites. This paper focuses on the effect of matrix ductility on the out-of-plane properties of thermoplastic composites, which was studied through quasi-static indentation (QSI) test that may represent impact problem albeit the speed difference. We evaluated continuous glass-fiber reinforced polypropylene thermoplastic composites (GFPP), and selected homopolymer PP and copolymer PP that represent ductile and less ductile matrices, respectively. Several cross-ply laminates were selected to study the influence of ply thicknesses and relative orientation of interfaces on QSI properties of GFPP. It is expected that GFPP with ductile matrix improves energy absorption of GFPP. However, the damage mechanism is completely different between GFPP with ductile and GFPP with less ductile matrices. GFPP with ductile matrix exhibits smaller damage zone in comparison to the one with less ductile matrix. Higher matrix ductility inhibits the growth of ply cracking along the fiber, and this causes the limited size of delamination. The stacking sequence poses more influence on less ductile composites rather than the ductile one.

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KW - D. Mechanical testing

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JO - Composite Structures

JF - Composite Structures

ER -

Characterizing the influence of matrix ductility on damage phenomenology in continuous fiber-reinforced thermoplastic laminates undergoing quasi-static indentation

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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