Fatigue crack growth in self-standing plasma-sprayed tungsten and molybdenum beams
with artificially introduced notches subjected to pure bending was studied. Fatigue crack
length was measured using the differential compliance method, and fatigue crack growth
rate was established as a function of stress intensity factor. Crack opening under
compressive stress was detected. Fractographic analysis revealed the respective crack
formation mechanisms. At low crack propagation rates, the fatigue crack growth takes place …

Fatigue crack growth in self-standing plasma sprayed tungsten and molybdenum beams
with artificially introduced notches subjected to pure bending was studied. Beams width,
thickness and length was 4 mm, 3 mm and 32 mm respectively. Fatigue crack length was
measured using the differential compliance method and fatigue crack growth rate was
established as a function of stress intensity factor. Unusual crack opening under
compressive loading part of the cycle was detected. Fractographic analysis revealed the …