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Void Content and Mechanical Properties of Carbon Fiber/Epoxy Composites with Different Stacking Sequences by Double-Vacuum-Bag Process.

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Title: Void Content and Mechanical Properties of Carbon Fiber/Epoxy Composites with Different Stacking Sequences by Double-Vacuum-Bag Process.
Authors: Ren, Liangliang1 (AUTHOR), Kang, Yuze1 (AUTHOR), Zhang, Yang1 (AUTHOR) zhangy502@avic.com
Source: Polymers (20734360). Aug2026, Vol. 18 Issue 16, p1996. 14p.
Subject Terms: *Composite material manufacturing, *Porosity, *Fiber orientation, *Laminated materials, *Carbon composites, *Density, *Epoxy resins, *Mechanical behavior of materials
Abstract: In the manufacturing of carbon fiber/epoxy composites, different stacking sequences have different effects on the void inside materials. In this paper, the double-vacuum-bag (DVB) process was utilized to fabricate laminates with different stacking sequences, including different angles, different thicknesses and plain weave prepregs, and the single-vacuum-bag (SVB) process was set as the control group. The void content of different laminates in the cross-section was counted by image analysis software, and material thickness, density, and fiber volume fraction were measured by experiments. Three-point bending and short-beam-shear tests were conducted to evaluate the material mechanical properties. The results show that the void contents of laminates prepared by the DVB process are all less than 1% with different stacking sequences, while the laminates manufactured by the SVB process contain a large number of voids inside. The density and fiber volume fraction of the DVB process are higher than those of the SVB process. In terms of mechanical properties, the flexural strength and interlayer-shear-strength (ILSS) of the DVB process are higher than those of the SVB process. The results of this paper expand the application of the DVB process and provide a reference for low-cost manufacturing of composite materials. [ABSTRACT FROM AUTHOR]
Database: Academic Search Index
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  Label: Title
  Group: Ti
  Data: Void Content and Mechanical Properties of Carbon Fiber/Epoxy Composites with Different Stacking Sequences by Double-Vacuum-Bag Process.
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  Data: <searchLink fieldCode="AR" term="%22Ren%2C+Liangliang%22">Ren, Liangliang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kang%2C+Yuze%22">Kang, Yuze</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Yang%22">Zhang, Yang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhangy502@avic.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Aug2026, Vol. 18 Issue 16, p1996. 14p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Composite+material+manufacturing%22">Composite material manufacturing</searchLink><br />*<searchLink fieldCode="DE" term="%22Porosity%22">Porosity</searchLink><br />*<searchLink fieldCode="DE" term="%22Fiber+orientation%22">Fiber orientation</searchLink><br />*<searchLink fieldCode="DE" term="%22Laminated+materials%22">Laminated materials</searchLink><br />*<searchLink fieldCode="DE" term="%22Carbon+composites%22">Carbon composites</searchLink><br />*<searchLink fieldCode="DE" term="%22Density%22">Density</searchLink><br />*<searchLink fieldCode="DE" term="%22Epoxy+resins%22">Epoxy resins</searchLink><br />*<searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In the manufacturing of carbon fiber/epoxy composites, different stacking sequences have different effects on the void inside materials. In this paper, the double-vacuum-bag (DVB) process was utilized to fabricate laminates with different stacking sequences, including different angles, different thicknesses and plain weave prepregs, and the single-vacuum-bag (SVB) process was set as the control group. The void content of different laminates in the cross-section was counted by image analysis software, and material thickness, density, and fiber volume fraction were measured by experiments. Three-point bending and short-beam-shear tests were conducted to evaluate the material mechanical properties. The results show that the void contents of laminates prepared by the DVB process are all less than 1% with different stacking sequences, while the laminates manufactured by the SVB process contain a large number of voids inside. The density and fiber volume fraction of the DVB process are higher than those of the SVB process. In terms of mechanical properties, the flexural strength and interlayer-shear-strength (ILSS) of the DVB process are higher than those of the SVB process. The results of this paper expand the application of the DVB process and provide a reference for low-cost manufacturing of composite materials. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.3390/polym18161996
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 1996
    Subjects:
      – SubjectFull: Composite material manufacturing
        Type: general
      – SubjectFull: Porosity
        Type: general
      – SubjectFull: Fiber orientation
        Type: general
      – SubjectFull: Laminated materials
        Type: general
      – SubjectFull: Carbon composites
        Type: general
      – SubjectFull: Density
        Type: general
      – SubjectFull: Epoxy resins
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
    Titles:
      – TitleFull: Void Content and Mechanical Properties of Carbon Fiber/Epoxy Composites with Different Stacking Sequences by Double-Vacuum-Bag Process.
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          Name:
            NameFull: Ren, Liangliang
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          Name:
            NameFull: Kang, Yuze
      – PersonEntity:
          Name:
            NameFull: Zhang, Yang
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          Dates:
            – D: 15
              M: 08
              Text: Aug2026
              Type: published
              Y: 2026
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            – TitleFull: Polymers (20734360)
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