Solar cell Small internal crack was easily detected in the acoustic image wherein cracks are distinctively shown as clear black lines. Such a crack was not evident in the optical image even at higher magnification. Transducer: 100 MHz
Poly-crystalline structure of solar cells. Crack propagation can be investigated by c-scan images. The image was taken at 100 MHz.
MEMS - Structure, delamination in the seal frame
Corrosion analysis. Primer- and varnish-sealed steel substrate. Corrosion spreads from the scratch introduced on the finishing layers as visible as a vertical line in the image. The image was taken at 100 MHz.
Metal grain structure
Delaminations inside DCB samples (Cu - ceramic interface)