TY - JOUR
T1 - Strain field measurement of filament-wound composites at ±55° using digital image correlation
T2 - An approach for unit cells employing flat specimens
AU - Torres Arellano, M.
AU - Crouzeix, L.
AU - Douchin, B.
AU - Collombet, F.
AU - Hernández Moreno, H.
AU - González Velázquez, J.
PY - 2010/9
Y1 - 2010/9
N2 - Testing of filament-wound composites (FWC) with simplified methods is studied until now in order to generalize the mechanical response of FWC structures. To assure a good analogy between meso- and macro scales, it is necessary to design a representative specimen that include the characteristic winding pattern. This research aims at characterizing the strain field of FWC pattern at ±55° using flat specimens by measuring the displacement field with digital image correlation. Experimental procedure involves tensile testing of epoxy/glass specimens with two unit cells aligned at hoop and axial direction of the winding pattern. Validation of the strain values from digital image correlation is carried out by comparing them with strain gauge measurements and FEM simulations. Failure sequence and modes of FWC flat unit cells show good concordance with those observed in FWC cylinders exposed to buckling in previous works [1].
AB - Testing of filament-wound composites (FWC) with simplified methods is studied until now in order to generalize the mechanical response of FWC structures. To assure a good analogy between meso- and macro scales, it is necessary to design a representative specimen that include the characteristic winding pattern. This research aims at characterizing the strain field of FWC pattern at ±55° using flat specimens by measuring the displacement field with digital image correlation. Experimental procedure involves tensile testing of epoxy/glass specimens with two unit cells aligned at hoop and axial direction of the winding pattern. Validation of the strain values from digital image correlation is carried out by comparing them with strain gauge measurements and FEM simulations. Failure sequence and modes of FWC flat unit cells show good concordance with those observed in FWC cylinders exposed to buckling in previous works [1].
KW - Filament winding
KW - Image correlation
KW - Strain field
KW - Unit cells
UR - http://www.scopus.com/inward/record.url?scp=77952428758&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2010.02.014
DO - 10.1016/j.compstruct.2010.02.014
M3 - Artículo
SN - 0263-8223
VL - 92
SP - 2457
EP - 2464
JO - Composite Structures
JF - Composite Structures
IS - 10
ER -