Mechanical characterization and failure modes of fiber reinforced angle-ply composites
Thesis/Dissertation
·
OSTI ID:5414824
Experimental and theoretical characterization of material properties were conducted for unidirectional and angle-ply laminates and comparisons made. The materials used were T300 Graphite/Rigidite 5209, Kevlar 49C/Rigidite 5216, and E-Glass/Rigidite 5216. Analysis of pertinent stresses, particularly the interlaminar shear stress was performed and their relation to laminate failure observed. Failure criteria formulated for anisotropic materials are discussed and scrutinized for their use in failure predictions of angle-ply laminates. The Tsai-Hill theory was applied to experimental data generated in this work. Laminates in all three material systems were pulled to failure in uniaxial tension and their failure mechanisms studied. Each failure mode was related to the stresses present in the laminate at the time of failure. Special emphasis was focused on the interlaminar shear stress throughout this work. Special samples were designed and manufactured to isolate interlaminar failures and show their relation to fiber orientation.
- Research Organization:
- North Carolina State Univ., Raleigh (USA)
- OSTI ID:
- 5414824
- Country of Publication:
- United States
- Language:
- English
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