Self-healing sandwich panels

Restoration of compressive strength after impact

H. R. Williams, R. S. Trask, I. P. Bond

Research output: Contribution to journalArticle

126 Citations (Scopus)

Abstract

Impact damage can significantly reduce the strength of composite sandwich panels, giving rise to large factors of safety in design. A self-healing sandwich panel was designed and manufactured. Specimens were tested in edgewise compression-after-impact to prove the concept. The self-healing system consists of vascular networks carrying the two liquid components of an epoxy resin system. After damage and autonomous self-healing, the specimens could be restored to their undamaged strength. Key influences on healing efficiency, and the need for further improvements in reliability were identified. A simple specific strength analysis suggested that the mass penalty of self-healing could, in some cases, be offset by the improved design allowables permitted.

Original languageEnglish
Pages (from-to)3171-3177
Number of pages7
JournalComposites Science and Technology
Volume68
Issue number15-16
DOIs
Publication statusPublished - Dec 2008

Fingerprint

Compressive strength
Restoration
Epoxy Resins
Epoxy resins
Composite materials
Liquids

Keywords

  • A. Smart materials
  • B. Impact behaviour
  • B. Strength
  • C. Sandwich
  • Vascular self-repair

ASJC Scopus subject areas

  • Engineering(all)
  • Ceramics and Composites

Cite this

Self-healing sandwich panels : Restoration of compressive strength after impact. / Williams, H. R.; Trask, R. S.; Bond, I. P.

In: Composites Science and Technology, Vol. 68, No. 15-16, 12.2008, p. 3171-3177.

Research output: Contribution to journalArticle

Williams, H. R. ; Trask, R. S. ; Bond, I. P. / Self-healing sandwich panels : Restoration of compressive strength after impact. In: Composites Science and Technology. 2008 ; Vol. 68, No. 15-16. pp. 3171-3177.
@article{11b41ca090054311a9c3e93712736072,
title = "Self-healing sandwich panels: Restoration of compressive strength after impact",
abstract = "Impact damage can significantly reduce the strength of composite sandwich panels, giving rise to large factors of safety in design. A self-healing sandwich panel was designed and manufactured. Specimens were tested in edgewise compression-after-impact to prove the concept. The self-healing system consists of vascular networks carrying the two liquid components of an epoxy resin system. After damage and autonomous self-healing, the specimens could be restored to their undamaged strength. Key influences on healing efficiency, and the need for further improvements in reliability were identified. A simple specific strength analysis suggested that the mass penalty of self-healing could, in some cases, be offset by the improved design allowables permitted.",
keywords = "A. Smart materials, B. Impact behaviour, B. Strength, C. Sandwich, Vascular self-repair",
author = "Williams, {H. R.} and Trask, {R. S.} and Bond, {I. P.}",
year = "2008",
month = "12",
doi = "10.1016/j.compscitech.2008.07.016",
language = "English",
volume = "68",
pages = "3171--3177",
journal = "Composites Science and Technology",
issn = "0266-3538",
publisher = "Elsevier Masson",
number = "15-16",

}

TY - JOUR

T1 - Self-healing sandwich panels

T2 - Restoration of compressive strength after impact

AU - Williams, H. R.

AU - Trask, R. S.

AU - Bond, I. P.

PY - 2008/12

Y1 - 2008/12

N2 - Impact damage can significantly reduce the strength of composite sandwich panels, giving rise to large factors of safety in design. A self-healing sandwich panel was designed and manufactured. Specimens were tested in edgewise compression-after-impact to prove the concept. The self-healing system consists of vascular networks carrying the two liquid components of an epoxy resin system. After damage and autonomous self-healing, the specimens could be restored to their undamaged strength. Key influences on healing efficiency, and the need for further improvements in reliability were identified. A simple specific strength analysis suggested that the mass penalty of self-healing could, in some cases, be offset by the improved design allowables permitted.

AB - Impact damage can significantly reduce the strength of composite sandwich panels, giving rise to large factors of safety in design. A self-healing sandwich panel was designed and manufactured. Specimens were tested in edgewise compression-after-impact to prove the concept. The self-healing system consists of vascular networks carrying the two liquid components of an epoxy resin system. After damage and autonomous self-healing, the specimens could be restored to their undamaged strength. Key influences on healing efficiency, and the need for further improvements in reliability were identified. A simple specific strength analysis suggested that the mass penalty of self-healing could, in some cases, be offset by the improved design allowables permitted.

KW - A. Smart materials

KW - B. Impact behaviour

KW - B. Strength

KW - C. Sandwich

KW - Vascular self-repair

UR - http://www.scopus.com/inward/record.url?scp=55649100726&partnerID=8YFLogxK

UR - http://dx.doi.org/10.1016/j.compscitech.2008.07.016

U2 - 10.1016/j.compscitech.2008.07.016

DO - 10.1016/j.compscitech.2008.07.016

M3 - Article

VL - 68

SP - 3171

EP - 3177

JO - Composites Science and Technology

JF - Composites Science and Technology

SN - 0266-3538

IS - 15-16

ER -