Effect of Specimen Length on the Performance of Iosipescu Composite Shear Specimen

H. Ho, H. T. Budiman, M. Y. Tsai, J. Morton

Research output: Contribution to journalJournal Article peer-review

1 Scopus citations


A detailed evaluation of the suitability of the subscale Iosipescu V-notch unidirectional composite specimens tested in the modified Wyoming fixture is presented. A linear finite element model is developed to compare the shear strain field in the test sections of the standard and subscale specimens. The experimental results from traditional strain-gage and moiré interferometry techniques for standard and subscale graphite-epoxy unidirectional specimens are also compared. It was found that the shear responses of the standard and subscale 90° specimens are identical. However, the shear strain distributions for the standard and subscale 0° specimens are different. Accurate measurement of the shear moduli can still be obtained for the subscale specimens if the appropriate correction factors are used.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalScience and Engineering of Composite Materials
Issue number1
StatePublished - 03 1994
Externally publishedYes


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