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Influence of Hole Diameter on Hole Quality and Tensile Strength of Woven Flax Fiber Laminates.

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Title: Influence of Hole Diameter on Hole Quality and Tensile Strength of Woven Flax Fiber Laminates.
Authors: Shi, H.1 (AUTHOR) hshi1011@sina.com, He, X.1 (AUTHOR)
Source: Journal of Natural Fibers. Dec2025, Vol. 22 Issue 1, p1-24. 24p.
Subjects: Tensile strength, Diameter, Machining, Natural fibers, Water jet cutting, Composite materials, Fracture mechanics
Abstract (English): This work primarily evaluates the effect of abrasive waterjet (AWJ) drilling variables on the machinability and residual tensile strength (σrts) of open-hole flax laminates. The primary purpose is to improve drilling quality and tensile performance. The AWJ drilling (AWJD) variables include waterjet pressure (WP), transverse speed (TS), and hole diameter (HD). HD exerts the highest impact on mean roughness (Ra) and hole size (D), while TS has a substantial effect on all response parameters except D and Ra. σrts decreases with increasing D for a constant specimen width. σrts at minimal delamination is higher than at maximal damage for the same D, particularly for small holes. Considering all holes, σrts for the worst-quality hole is 104.91 MPa, which is much higher than 83.09 MPa for the optimal-quality hole, indicating that σrts under optimal-quality conditions is less than that under worst-quality conditions. The failure of open-hole flax composites originates from transverse matrix cracking perpendicular to the tensile axis, causing the separation of the fibers from the matrix and ultimately leading to the specimens breaking. The fracture mechanisms are independent of AWJD parameters. In summary, the AWJD parameters can markedly affect the hole quality and residual tensile strength of flax fiber composites. [ABSTRACT FROM AUTHOR]
Abstract (Chinese): 本研究主要评估磨料水射流 (AWJ)钻孔变量对开孔亚麻层压板可加工性和残余抗拉强度 (σrts)的影响. 主要目的是提高钻孔质量和拉伸性能. AWJ钻孔 (AWJD)变量包括磨料水射流压力 (WP)、横向速度 (TS)和孔径 (HD). HD对平均粗糙度 (Ra)和孔径 (D)的影响最大，而TS对所有响应参数都有实质性影响，除了D和Ra，在恒定的试样宽度下，随着D的增加，σrts会. 最小分层时的σrts高于最大损伤时的σrts，特别是对于小孔. 开孔亚麻复合材料的失效源于垂直于拉伸轴的横向基体开裂，导致纤维与基体分离，最终导致试样断裂. 断裂机制与AWJD参数无关. 综上所述，AWJD参数可以显著影响亚麻纤维复合材料的孔质量和残余拉伸强度. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Natural Fibers is the property of Taylor & Francis Ltd 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.)
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IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Influence of Hole Diameter on Hole Quality and Tensile Strength of Woven Flax Fiber Laminates.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Shi%2C+H%2E%22">Shi, H.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> hshi1011@sina.com</i><br /><searchLink fieldCode="AR" term="%22He%2C+X%2E%22">He, X.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
– Name: TitleSource
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  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+Natural+Fibers%22">Journal of Natural Fibers</searchLink>. Dec2025, Vol. 22 Issue 1, p1-24. 24p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Tensile+strength%22">Tensile strength</searchLink><br /><searchLink fieldCode="DE" term="%22Diameter%22">Diameter</searchLink><br /><searchLink fieldCode="DE" term="%22Machining%22">Machining</searchLink><br /><searchLink fieldCode="DE" term="%22Natural+fibers%22">Natural fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Water+jet+cutting%22">Water jet cutting</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+materials%22">Composite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Fracture+mechanics%22">Fracture mechanics</searchLink>
– Name: Abstract
  Label: Abstract (English)
  Group: Ab
  Data: This work primarily evaluates the effect of abrasive waterjet (AWJ) drilling variables on the machinability and residual tensile strength (σrts) of open-hole flax laminates. The primary purpose is to improve drilling quality and tensile performance. The AWJ drilling (AWJD) variables include waterjet pressure (WP), transverse speed (TS), and hole diameter (HD). HD exerts the highest impact on mean roughness (Ra) and hole size (D), while TS has a substantial effect on all response parameters except D and Ra. σrts decreases with increasing D for a constant specimen width. σrts at minimal delamination is higher than at maximal damage for the same D, particularly for small holes. Considering all holes, σrts for the worst-quality hole is 104.91 MPa, which is much higher than 83.09 MPa for the optimal-quality hole, indicating that σrts under optimal-quality conditions is less than that under worst-quality conditions. The failure of open-hole flax composites originates from transverse matrix cracking perpendicular to the tensile axis, causing the separation of the fibers from the matrix and ultimately leading to the specimens breaking. The fracture mechanisms are independent of AWJD parameters. In summary, the AWJD parameters can markedly affect the hole quality and residual tensile strength of flax fiber composites. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label: Abstract (Chinese)
  Group: Ab
  Data: 本研究主要评估磨料水射流 (AWJ)钻孔变量对开孔亚麻层压板可加工性和残余抗拉强度 (σrts)的影响. 主要目的是提高钻孔质量和拉伸性能. AWJ钻孔 (AWJD)变量包括磨料水射流压力 (WP)、横向速度 (TS)和孔径 (HD). HD对平均粗糙度 (Ra)和孔径 (D)的影响最大，而TS对所有响应参数都有实质性影响，除了D和Ra，在恒定的试样宽度下，随着D的增加，σrts会. 最小分层时的σrts高于最大损伤时的σrts，特别是对于小孔. 开孔亚麻复合材料的失效源于垂直于拉伸轴的横向基体开裂，导致纤维与基体分离，最终导致试样断裂. 断裂机制与AWJD参数无关. 综上所述，AWJD参数可以显著影响亚麻纤维复合材料的孔质量和残余拉伸强度. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Natural Fibers is the property of Taylor & Francis Ltd 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.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1080/15440478.2025.2583856
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 24
        StartPage: 1
    Subjects:
      – SubjectFull: Tensile strength
        Type: general
      – SubjectFull: Diameter
        Type: general
      – SubjectFull: Machining
        Type: general
      – SubjectFull: Natural fibers
        Type: general
      – SubjectFull: Water jet cutting
        Type: general
      – SubjectFull: Composite materials
        Type: general
      – SubjectFull: Fracture mechanics
        Type: general
    Titles:
      – TitleFull: Influence of Hole Diameter on Hole Quality and Tensile Strength of Woven Flax Fiber Laminates.
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            NameFull: Shi, H.
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            NameFull: He, X.
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            – D: 01
              M: 12
              Text: Dec2025
              Type: published
              Y: 2025
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