Interlaminar strains at the free edge of a hole in laminated composites: An experimental study
- Oak Ridge National Lab., TN (United States). Engineering Technology Div.
Free-edge effects in laminated composite materials were studied experimentally using high-sensitivity moire interferometry. Six laminates from two material systems were tested in uniaxial compression on an electro-mechanical testing machine. Interlaminar deformations were measured on a ply-by-ply basis at the straight free-edge and, for the first time, on the cylindrical surface of a hole. Strain distributions were determined with high fidelity for the hole surface and the straight free edge of the thick composite panels. Comparisons were made on a ply-by-ply basis for the transverse and tangential strains at the horizontal centerline of the hole (90{degree} location) and the corresponding plies at the straight boundaries.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- Office of Naval Research, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 238560
- Report Number(s):
- CONF-9310291--1; ON: DE96010726; CNN: Grant N0014-90-J1688; Grant N0014-86-K0799
- Country of Publication:
- United States
- Language:
- English
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