Microcracking and delamination of stitched composites under static and fatigue loads

A. Yudhanto, N. Watanabe, Yutaka Iwahori, H. Hoshi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper discusses the long standing issue, which is the underlying mechanisms behind the change of mechanical properties of carbon/epoxy composites when through-thickness stitching is employed. In particular, the development of matrix microcracking and delamination in Vectran-stitched carbon/epoxy composites subjected to static and fatigue loads is discussed. Damage mechanisms in the order of occurrence, i.e. growth of microcracking and delamination, and the quantification of damage in stitched composite of different stitch density are given in details. It is found that while stitching may promote larger amount of microcracking in transverse (90°) and oblique directions (+45° and -45°), it is also effective in arresting the delamination growth. High-density stitch (11.1/cm2) in carbon/epoxy laminates is effective in arresting the delamination growth.

Original languageEnglish
Title of host publication8th Asian-Australasian Conference on Composite Materials 2012, ACCM 2012 - Composites
Subtitle of host publicationEnabling Tomorrow's Industry Today
Pages203-208
Number of pages6
Publication statusPublished - 1 Dec 2012
Event8th Asian-Australasian Conference on Composite Materials 2012 - Composites: Enabling Tomorrow's Industry Today, ACCM 2012 - Kuala Lumpur, Malaysia
Duration: 6 Nov 20128 Nov 2012

Publication series

Name8th Asian-Australasian Conference on Composite Materials 2012, ACCM 2012 - Composites: Enabling Tomorrow's Industry Today
Volume1

Conference

Conference8th Asian-Australasian Conference on Composite Materials 2012 - Composites: Enabling Tomorrow's Industry Today, ACCM 2012
CountryMalaysia
CityKuala Lumpur
Period6/11/128/11/12

Keywords

  • Damage
  • Fatigue
  • Static
  • Stitched composites

Cite this

Yudhanto, A., Watanabe, N., Iwahori, Y., & Hoshi, H. (2012). Microcracking and delamination of stitched composites under static and fatigue loads. In 8th Asian-Australasian Conference on Composite Materials 2012, ACCM 2012 - Composites: Enabling Tomorrow's Industry Today (pp. 203-208). (8th Asian-Australasian Conference on Composite Materials 2012, ACCM 2012 - Composites: Enabling Tomorrow's Industry Today; Vol. 1).