Damage behavior of foam core sandwich composites subjected to quasi-static indentation testing

Li Yan, Xuefeng An, Jianli Cai, Xiaosu Yi

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Damage behavior of foam core sandwich composites subjected to quasi-static indentation testing was investigated detailedly. Force-displacement curves and the cross-sections of damaged sandwich panels were analyzed. Effects of core thickness, face-sheet thickness and toughness of face-sheet materials were discussed by comparison with different specimens subjected to quasi-static indentation testing. Results showed that damage behavior of sandwich composites had identical feature. Collapse of foam core initially appeared, and then foam core generated crack. Delamination and fiber breakage of upper face-sheet occurred. Finally, the foam core and the face-sheet were disengaged. For the specimens with thick foam cores, the foam crack extended in longitudinal direction was caused. However, for the specimens with thin foam cores, the foam cracked in transverse direction. After face-sheets were toughened with PAEK, the damage resistance and the maximum force of the sandwich panels increased. Also, the shear angle of foam crack changed to be lager. Compared with the penetrated damage behavior of sandwich panels with thin face-sheets, the upper face-sheets of the former the specimens with thick face-sheets bulged partially and could not be penetrated.

Original languageEnglish
Title of host publicationApplied Mechanics and Mechatronics Automation
Pages57-64
Number of pages8
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 International Applied Mechanics, Mechatronics Automation Symposium, IAMMAS 2012 - Shenyang, Liaoning, China
Duration: 7 Sep 20129 Sep 2012

Publication series

NameApplied Mechanics and Materials
Volume182-183
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2012 International Applied Mechanics, Mechatronics Automation Symposium, IAMMAS 2012
Country/TerritoryChina
CityShenyang, Liaoning
Period7/09/129/09/12

Keywords

  • Damage behavior
  • Foam core sandwich composites
  • Force-displacement curves
  • Quasi-static indentation testing

ASJC Scopus subject areas

  • Engineering (all)

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