View in EDS

Interfacial adhesion and failure transition governed by fibre embedded length in 3D-printed continuous carbon fibre–reinforced PETG composites.

Saved in:
Bibliographic Details
Title: Interfacial adhesion and failure transition governed by fibre embedded length in 3D-printed continuous carbon fibre–reinforced PETG composites.
Authors: Kumar, S. Siddharth1 (AUTHOR), Htike, Min H.1 (AUTHOR), Partanen, Jouni1 (AUTHOR), Almeida Jr, José Humberto S.2 (AUTHOR) humberto.almeida@lut.fi
Source: Journal of Thermoplastic Composite Materials. Jul2026, Vol. 39 Issue 7, p3660-3685. 26p.
Subjects: Fiber-matrix interfaces, Carbon fibers, Fibrous composites, Composite materials, Fiber testing, Shear strength, Mechanical behavior of materials
Abstract: The mechanical performance of additively manufactured composites is strongly governed by fibre–matrix interfacial adhesion, which can be compromised by process-induced imperfections. This study examines how fibre embedded length controls interfacial adhesion behaviour and failure mechanisms in 3D-printed continuous carbon fibre-reinforced polyethylene terephthalate glycol (PETG) composites, using single-fibre pull-out testing combined with scanning electron microscopy (SEM). Specimens with embedded lengths ranging from 1 mm to 50 mm were tested to capture the transition between fibre slippage and fibre fracture. A critical embedded length (L c ) of 4.88 ± 0.54 mm was determined, beyond which fibre fracture dominates. The apparent interfacial shear strength (IFSS) was measured as 18.6 ± 1.2 MPa, while the interfacial fracture energy (G c ) was calculated as 27.3 J/m2. A linear traction–separation cohesive law was fitted based on these experimental parameters. SEM imaging reveals distinct microstructural features associated with the two failure modes. These findings establish practical benchmarks for optimising fibre placement, orientation strategies, and load transfer efficiency in 3D-printed composites. The outcomes contribute to the advancement of lightweight composite structures for aerospace and automotive applications. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Thermoplastic Composite Materials is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 194757551
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Interfacial adhesion and failure transition governed by fibre embedded length in 3D-printed continuous carbon fibre–reinforced PETG composites.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Kumar%2C+S%2E+Siddharth%22">Kumar, S. Siddharth</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Htike%2C+Min+H%2E%22">Htike, Min H.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Partanen%2C+Jouni%22">Partanen, Jouni</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Almeida+Jr%2C+José+Humberto+S%2E%22">Almeida Jr, José Humberto S.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> humberto.almeida@lut.fi</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+Thermoplastic+Composite+Materials%22">Journal of Thermoplastic Composite Materials</searchLink>. Jul2026, Vol. 39 Issue 7, p3660-3685. 26p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Fiber-matrix+interfaces%22">Fiber-matrix interfaces</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+fibers%22">Carbon fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Fibrous+composites%22">Fibrous composites</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+materials%22">Composite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Fiber+testing%22">Fiber testing</searchLink><br /><searchLink fieldCode="DE" term="%22Shear+strength%22">Shear strength</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The mechanical performance of additively manufactured composites is strongly governed by fibre–matrix interfacial adhesion, which can be compromised by process-induced imperfections. This study examines how fibre embedded length controls interfacial adhesion behaviour and failure mechanisms in 3D-printed continuous carbon fibre-reinforced polyethylene terephthalate glycol (PETG) composites, using single-fibre pull-out testing combined with scanning electron microscopy (SEM). Specimens with embedded lengths ranging from 1 mm to 50 mm were tested to capture the transition between fibre slippage and fibre fracture. A critical embedded length (L c ) of 4.88 ± 0.54 mm was determined, beyond which fibre fracture dominates. The apparent interfacial shear strength (IFSS) was measured as 18.6 ± 1.2 MPa, while the interfacial fracture energy (G c ) was calculated as 27.3 J/m2. A linear traction–separation cohesive law was fitted based on these experimental parameters. SEM imaging reveals distinct microstructural features associated with the two failure modes. These findings establish practical benchmarks for optimising fibre placement, orientation strategies, and load transfer efficiency in 3D-printed composites. The outcomes contribute to the advancement of lightweight composite structures for aerospace and automotive applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Thermoplastic Composite Materials is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=194757551
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1177/08927057251408473
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 26
        StartPage: 3660
    Subjects:
      – SubjectFull: Fiber-matrix interfaces
        Type: general
      – SubjectFull: Carbon fibers
        Type: general
      – SubjectFull: Fibrous composites
        Type: general
      – SubjectFull: Composite materials
        Type: general
      – SubjectFull: Fiber testing
        Type: general
      – SubjectFull: Shear strength
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
    Titles:
      – TitleFull: Interfacial adhesion and failure transition governed by fibre embedded length in 3D-printed continuous carbon fibre–reinforced PETG composites.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Kumar, S. Siddharth
      – PersonEntity:
          Name:
            NameFull: Htike, Min H.
      – PersonEntity:
          Name:
            NameFull: Partanen, Jouni
      – PersonEntity:
          Name:
            NameFull: Almeida Jr, José Humberto S.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 08927057
          Numbering:
            – Type: volume
              Value: 39
            – Type: issue
              Value: 7
          Titles:
            – TitleFull: Journal of Thermoplastic Composite Materials
              Type: main
ResultId 1