Prediction of elastic properties for woven z-pinned composites

Heoung Jae Chun, Juhyun Son, Kyoung Tak Kang, Jun Hyung Byun, Moon Kwang Um, Sang Kwan Lee

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Delamination occurs easily due to impact loads caused by the weakness of out-of-plane properties in composite materials. In order to overcome this problem of suppressing delamination, which is a critical weakness for composite materials, z-pinned composite material with reinforced out-of-plane elastic properties was developed by inserting z-pins into out-of-plane directions. In order to overcome the stability within the mutually orthogonal yarn direction of z-pinned composite material, a woven z-pinned composite was developed. This paper examines the effects of z-pin reinforcement on the elastic properties of composite materials as well as the changes in elastic properties used for the diameter of the z-pin, the length of the resin rich zone, and the length of yarn thickness by incorporating the graded fiber waviness that is created by the z-pin and graded warp and fill. As a result, we observed an increase in the out-of-plane properties of the woven z-pinned composite. Positive correlations were observed between the numerical model and experimental results.

Original languageEnglish
Pages (from-to)59-71
Number of pages13
JournalComposites Part B: Engineering
Publication statusPublished - 2014 Jun 17
Externally publishedYes


  • A. 3-Dimensional reinforcement
  • B. Elasticity
  • C. Numerical analysis
  • D. Mechanical testing

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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