Method for determination of strain distribution in components

A method for determination of strain distribution in components, in particular in gas turbine components, comprising the sequential steps of:

• a) production of a component, the strain distribution of which is to be determined;
• b) vibrational excitation of the component and measured recording of a vibrational amplitude distribution of the component for a number of measured points by means of a vibrometer, each measuring point being determined by three coordinates and the measured vibrational amplitude distribution of each measuring point being a vectorial parameter;
• c) smoothing of the vibrational amplitude distribution recorded by measurement for each measuring point;
• d) definition of polygonal elements, wherein each measuring point forms a corner of at least one element;
• e) calculation of a tensor strain condition for each of the polygonal elements from tensor vibrational amplitude distributions present in the corners of the elements by a computer;
• and
• f) calculation of the strain distribution in the corners of the elements from the strain conditions of the elements by the computer.