Facesheet debonding criteria for composite sandwich panels under in-plane compression

W. C. Kim, C. K.H. Dharan

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


A method for determining the critical debond size between the facesheet and the core in composite sandwich panels under in-plane compression is described. The approach uses fracture mechanics together with a buckling criterion for a debonded faceskin. The technique yields predictions for the critical in-plane compressive load for debond propagation as a function of core-to-faceskin debond size, faceskin thickness, lay-up, composite material properties, and honeycomb properties and geometry. A computer program, developed in this work, calculates the critical buckling load and facesheet deformed shape by solving an eigenvalue problem. The output predicts, for several cases, critical initial debond lengths comparable to those that have been observed on tests on sandwich panels.

Original languageEnglish
Pages (from-to)643-652
Number of pages10
JournalEngineering Fracture Mechanics
Issue number4
Publication statusPublished - 1992 Jul

Bibliographical note

Funding Information:
Acknowledgement-Thisw ork was supportedi n part by the GeneralD ynamics/SpacSey stemsD ivision under Purchase Order No. 05-00577.

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


Dive into the research topics of 'Facesheet debonding criteria for composite sandwich panels under in-plane compression'. Together they form a unique fingerprint.

Cite this