Issue 61

E. Ashoka et alii, Frattura ed Integrità Strutturale, 61 (2022) 473-486; DOI: 10.3221/IGF-ESIS.61.31

SiC/Cenosphere composites. It is noticeable that as crack length increases in the material, which decreases the load carrying capacity which in turn causes reduction in fracture toughness. It is also observed that, at a/W ratio 0.3 to 0.6, the composite with 6 wt% of cenosphere shows highest fracture toughness which is around 6% higher than the 3wt% of cenosphere. It is clear that as the composition of the cenosphere increases fracture toughness of the composite increases up to 6wt%.

Particle debonding

Micro cracks in matrix

(a) Al6061+3wt%SiC+ 3wt% Cenosphere.

Particle debonding

Crack arrest due to reinfocement

Void formation

Crack in Particle

(b) Al6061+3wt%SiC+ 6wt% Cenosphere

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