A standard measure of defects from CMD Votum set for thickness evaluation
Reference standard for EMA thickness measurement. Made of nonferromagnetic alloy. It is used in standard methods of EMA thickness measurement together with the universal flaw detector Tomographic UD4-TM (Tomographic 1.2) for setup and checkof acoustic path of UD4-TM flaw detector and electromagnetic-acoustic transducers (EMA).
Standard measure of defects according to GOST 18576
Reference standard SO-3R is used to determine: - conditional sensitivity when implementing echo and Delta methods; - dead zone; - depth gauge error and reflector coordinates determination error; - x-value; - ultrasonic vibrations inputangle; - width of inclined probedirectional diagram main beam; SO-3R Sample is made of steel of 20 grade according to GOST 14637. Longitudinal wave propagation speed in the standard material at a temperature of (20±5)°C must be (5900±118) m/s