V1 calibration block allows to:
- determine the index point of ultrasonic oscillations and ultrasonic x-value with an error ± 0.5 mm;
- determine the probe angle of ultrasonic oscillations with an error ±1 angl. degrees;
- determine the non-testing (dead) zone (by steel) for straight-beam probes;
- determine the resolution capability (by steel) of ultrasonic straight-beam probes;
- determine the sweep linearity of UT flaw detectors horizontally;
Specifications
- Calibration block is made of a fine grained low carbon steel with a low attenuation coefficient;
- longitudinal waves sound velocity in the calibration block material at a frequency 5.0 MHz and temperature (20±5) 0 С equals (5920±30) m/s;
- Shear waves sound velocity in the polymethyl methacrylate material of calibration block at a frequency 5.0 MHz and temperature 0 С equals (2670±100) m/s;
- Calibration block geometrical dimensions correspond to DSTU 4002-2000 (ISO 2400, DIN 54120, B. S. 2704);
- Calibration block weight is no more than 4.8 kg.