Figure 5.

Calculated cavitation and debonding stress threshold vs. diameter of μCalc (θ = 5°, G_a = 0.5 J/m²). Figure shows that for μCalcs < 65μm σ_c < σ_d, and cavitation should be the preferential mode of failure (rupture of the fibrous cap), and for very small calcifications D < 5μm no cavitation nor debonding would occur. Solid horizontal lines indicate minimum and average rupture thresholds 300kPa and 545kPa (Cheng et al. 1993).