Fractal model for estimating fracture toughness of carbon nanotube reinforced aluminum oxide
- Department of Materials and Metallurgical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016 (India)
The current work focuses on predicting the fracture toughness of Al{sub 2}O{sub 3} ceramic matrix composites using a modified Mandelbrot's fractal approach. The first step confirms that the experimental fracture toughness values fluctuate within the fracture toughness range predicted as per the modified fractal approach. Additionally, the secondary reinforcements [such as carbon nanotubes (CNTs)] have shown to enhance the fracture toughness of Al{sub 2}O{sub 3}. Conventional fractural toughness evaluation via fractal approach underestimates the fracture toughness by considering the shortest crack path. Hence, the modified Mandelbrot's fractal approach considers the crack propagation along the CNT semicircumferential surface (three-dimensional crack path propagation) for achieving an improved fracture toughness estimation of Al{sub 2}O{sub 3}-CNT composite. The estimations obtained in the current approach range within 4% error regime of the experimentally measured fracture toughness values of the Al{sub 2}O{sub 3}-CNT composite.
- OSTI ID:
- 21476320
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 12 Vol. 107; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mode I Fracture Toughness Prediction for Multiwalled-Carbon-Nanotube Reinforced Ceramics
Toughening and reinforcing alumina matrix composite with single-wall carbon nanotubes
Related Subjects
77 NANOSCIENCE AND NANOTECHNOLOGY
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON
CERAMICS
CHALCOGENIDES
COMPOSITE MATERIALS
CRACK PROPAGATION
CRACKS
ELEMENTS
FRACTALS
FRACTURE PROPERTIES
MATERIALS
MATRIX MATERIALS
MECHANICAL PROPERTIES
NANOSTRUCTURES
NANOTUBES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
REINFORCED MATERIALS
SURFACES
THREE-DIMENSIONAL CALCULATIONS