Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"micro-buckling"”.
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Multi-scale analysis of wrinkling during consolidation of thermoset composites
… factors and the wrinkling of plies caused by micro-buckling has not been investigated quantitatively. Furthermore, these effects are not fully captured in current process models. This research aims to develop an efficient strategy for analysing the multi-scale mechanisms of wrinkling due to …
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Structural Integrity of Polymer Matrix Composites Exposed to Fire Conditions
… and mechanical loading. The Budiansky-Fleck micro-buckling analysis technique was used as the failure function of the [0] surface plies. A finite element analysis (FEA) analysis was also performed and showed good agreement with the experimental data.
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Instability-related delamination growth of embedded and edge delaminations
Compressive loads can cause local buckling in composite laminates that have a near-surface delamination. This buckling causes load redistribution and secondary loads, which in turn cause interlaminer stresses and delamination growth. The goal of this research effort was to enhance the understanding …
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Damage characterization and modeling of notched graphite/epoxy sandwich panels in compression
… evaluation techniques such as polishing and microscopy were employed to describe the damage progression. The key microscopic damage mechanisms were identified to be delamination and fiber micro-buckling, which often led to kinkband formation. Two distinct failure types were identified …
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Compression Creep Rupture of an E-glass/Vinyl Ester Composite Subjected to Combined Mechanical and Fire Loading Conditions
… states such as local compression failures due to micro-buckling, residual strength and times to failure for composite laminates at temperatures in the vicinity of the glass transition where failure is controlled by viscoelastic effects. Given the importance of compression loading to a structure …
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Micromechanics of ultra-high molecular weight polyethylene fibre composites
Ultra-high molecular weight polyethylene (UHMWPE) fibre composites are considered to be state-of-the-art materials for penetration and ballistic impact protection applications. The composites are made of strong UHMWPE fibres with a soft compliant matrix. The extreme anisotropy caused by the …
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Resistance of Carbon Fibre Reinforced Composites to Quasi-static and Ballistic Perforation
The failure mechanisms, as well as the indentation and penetration resistance, of carbon fibre reinforced plastic (CFRP) cross-ply laminates were investigated under quasi-static and ballistic loading. In this thesis, the two most prominent failure modes were indirect tension and shear plugging. To …