Title: Picture frame test of woven composite reinforcements with a full-field strain registration
Authors: Lomov, Stepan Vladimirovitch ×
Willems, A
Verpoest, Ignace
Zhu, Y
Barburski, Marcin
Stoilova, T. #
Issue Date: Mar-2006
Publisher: Sage publications ltd
Series Title: Textile research journal vol:76 issue:3 pages:243-252
Abstract: Results Of Picture frame shear tests with optical registration of the strain fields are presented for glass (plain and twill, three types) and glass/PP woven (plain and twill) fabric reinforcements for composite materials. Four problems were investigated. (1) How does the shear diagram vary with differences in test conditions? The major factor is the sample pretension, which is influenced by its gripping, removing/preserving yarns near the grips and "conditioning" in the shear cycles. (2) Does the shear of the fabric differ from the pure shear prescribed by the frame? The differences are normally negligible. (3) How large are the variations of the local fabric shear? The scatter of the local fabric shear does not exceed 2 degrees. (4) How is shear of the fabric translated into deformations of the yarns oil the micro-scale? Different stages of the fabric deformation are identified: rotation of the yarns followed by their lateral compression.
ISSN: 0040-5175
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Mechanical Metallurgy Section (-)
Department of Materials Engineering - miscellaneous
Structural Composites and Alloys, Integrity and Nondestructive Testing
× corresponding author
# (joint) last author

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