METHOD FOR NON-DESTRUCTIVE TESTING OF PISTON MACHINES BASED ON REGISTRATION OF CHANGE IN ANGULAR ACCELERATION OF SHAFT Russian patent published in 2024 - IPC G01M15/04 

FIELD: machine building.

SUBSTANCE: method of non-destructive testing of piston machines includes registration of signals from the controlled object, their processing and analysis. A magnet is placed on the shaft end opposite the encoder. An angle of rotation of the shaft of the product without a defect is recorded and during operation, the sequence of pulses is stored in the memory of the signal processing device. Said data are averaged, result of averaging is transmitted to control panel, where data on angular acceleration of rotation of controlled object is compared with data of state of object without defects. At change of absolute values of angular accelerations, change of mutual arrangement of angular accelerations during rotation of the shaft, as well as at occurrence of additional angular accelerations at certain angles of rotation of the shaft, a conclusion is made on the presence of a defect in the article.

EFFECT: simplified defect detection procedure.

1 cl, 6 dwg