Full text loading...
The estimated Weibull parameters based on volume , total surface area , and sidewall area , normalized to the values corresponding to sample B.
Weibull plots showing fracture strength transformed to unit size in uniaxial tension. and ta-C are transformed to unit sidewall area and UNCD is transformed to unit volume.
(a) SEM micrograph of the overview of the fracture surface of an UNCD specimen and (b) HRTEM plain view of an UNCD sample, showing amorphous carbon in front of grains, with one grain presenting twins. The inset shows the fast Fourier transform (FFT) of an area within the amorphous region.
(a) Fracture surface of a ta-C specimen. (b) Fracture surface of a single crystal specimen. The arrow points to the mirror region where the failure originated.
Measured elastic modulus and fracture strengths for the three tested materials.
Measured fracture toughness, equivalent stress-intensity factors, characteristic defect-free length, and theoretical strengths.
Article metrics loading...