Fabrication and mechanical testing of glass fiber entangled sandwich beams: A comparison with honeycomb and foam sandwich beams |
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Authors: | Amir Shahdin Laurent Mezeix Christophe Bouvet Joseph Morlier Yves Gourinat |
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Affiliation: | aUniversité de Toulouse, ISAE/DMSM, Campus Supaero, 10 av. Edouard Belin BP54032, 31055 Toulouse, France;bUniversité de Toulouse, INPT-ENSIACET/CIRIMAT, 118 Route de Narbonne, 31077 Toulouse, France;cUniversité de Toulouse, UPS/LGMT, Bat 3PN 118 Route de Narbonne, 31062 Toulouse, France |
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Abstract: | The aim of this paper is the fabrication and mechanical testing of entangled sandwich beam specimens and the comparison of their results with standard sandwich specimens with honeycomb and foam as core materials. The entangled sandwich specimens have glass fiber cores and glass woven fabric as skin materials. The tested glass fiber entangled sandwich beams possess low compressive and shear modulus as compared to honeycomb and foam sandwich beams of the same specifications. Although the entangled sandwich beams are heavier than the honeycomb and foam sandwich beams, the vibration tests show that the entangled sandwich beams possess higher damping ratios and low vibratory levels as compared to honeycomb and foam sandwich beams, making them suitable for vibro-acoustic applications where structural strength is of secondary importance, e.g., internal paneling of a helicopter. |
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Keywords: | Entangled sandwich materials Mechanical testing Vibration testing Damping |
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