METHOD AND DEVICE FOR DETERMINING DEFECTS ON A CONSTRUCTIONAL ELEMENT OF A TURBINE

摘要

The invention relates to a method which is used to detect defects on a component (10, 12) of a turbine. Said method comprises the following steps; at least one ultrasonic signal is emitted and captured by means of a group beam examination head (18) on a flat region of the component (10, 12) which is to be examined. The invention is characterised according to the following steps: the group of the beam examination heads (18) are distributed into several virtua l examination heads (20, 22, 24) and at least one ultrasonic signal is emitted and captured by a t least two of the virtual examination heads (20, 22, 24) which is directed to an individual flat regio n which is to be examined.