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Post Repair Study of Carbon-Glass Hybrid Composite in High Velocity Impact and Tensile Environment

Post Repair Study of Carbon-Glass Hybrid Composite in High Velocity Impact and Tensile Environment

Date17th Mar 2022

Time03:00 PM

Venue Online Meeting Link: https://meet.google.com/stj-mkio-zmf

PAST EVENT

Details

Hybrid composites comprising of glass and carbon fibres, have found a significant increase in their employment in applications owing to their synergetic effect to overcome the limitation of one fabric by the benefit offered by the other fabric. However, during the service life, a structure may undergo various damages because of mechanical load or environmental conditions, which reduces the component's strength. In this work, the carbon-glass hybrid composite was repaired using the adhesive patch repair technique. The post repair behaviour is investigated in high velocity impact and tensile loading environments. In the impact study, the stacking sequence of plies in a patch and the effect of different patches were studied. A 3D finite element model was also developed and validated with the experimental results to further understand the effect of the ratio of glass to carbon ply in a patch. From the impact study, it is observed that the placement of glass plies and the number of glass plies in the patch significantly enhances the impact resistance of the specimen. In the tensile study, the effect of patch parent stacking sequence and stiffness of patch were studied with the aid of digital image correlation and acoustic emission. The least stiff patch with parent laminate having glass ply as the exterior ply exhibited the highest strength recovery during the tensile loading.

Speakers

Mr. Chinmaya Kumar Sahoo (AM19D009)

Department of Applied Mechanics