Enhancement of strength and uniformity in unidirectionally arrayed chopped strands with angled slits

I. Taketa, N. Sato, A. Kitano, M. Nishikawa, T. Okabe

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

This study proposes a technique for enhancing strength and uniformity in unidirectionally arrayed chopped strands (Enhanced UACS). Enhanced UACS is made by introducing slits at small angles to the fiber direction into a unidirectional prepreg. As the angle becomes smaller, the stress concentration around the slit decreases. Therefore, delamination initiated from the slit is effectively suppressed and the final failure is mainly caused by fiber breakage. As a result, the Enhanced UACS laminate achieves excellent tensile, compressive, flexural, fatigue and impact strength, comparable to continuous fiber composites. Moreover, we demonstrate that the laminate can be uniformly stretched without a slit opening when it is formed.

Original languageEnglish
Pages (from-to)1639-1646
Number of pages8
JournalComposites Part A: Applied Science and Manufacturing
Volume41
Issue number11
DOIs
Publication statusPublished - 2010 Nov

Keywords

  • A. Polymer-matrix composites (PMCs)
  • B. Fracture toughness
  • B. Strength
  • E. Compression molding

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

Fingerprint Dive into the research topics of 'Enhancement of strength and uniformity in unidirectionally arrayed chopped strands with angled slits'. Together they form a unique fingerprint.

Cite this