Macroscopic images of fracture surfaces of Charpy test specimens of steel R73 contain bright spots which represent cleavage facets or ductile dimples in special orientations. Being the brightest patches in the image, they can be extracted by thresholding. Their counts and area distribution are closely related to temperature and impact energy.
Macroscopic images of fracture surfaces of Charpy test specimens of steel R73 contain bright spots which represent cleavage facets or ductile dimples in special orientations. Being the brightest patches in the image, they can be extracted by thresholding. Their counts and area distribution are closely related to temperature and impact energy. (en)
Makroskopické obrazy lomových ploch ze zkoušky vrubové houževnatosti oceli R73 obsahují světlé skvrny, které representují štěpné fasety a tvárné důlky v určitých orientacích. Jakožto nejsvětlejší elementy obrazu mohou být extrahovány binarizací prahem. Jejich počty a distribuce jejich velikostí jsou úzce svázány s teplotou a pohlcenou energií. (cs)