System for crack propagation observation is composed of:
- Keyence VW 9000 microscope
- High-speed camera Keyence VW-600C
- Tripod inclined at an angle of up to 90 degrees Keyence VH-S30B+VH-S30F
- Keyence VH-Z100R lens (100-1000x) for bright/dark field observation with polarization
- Additional light-source Keyence VW-L1
- Self-designed optical table