The Evaluation of NDT Techniques for Abrasive Wheels

Authors: R.L. Smith, NDT Centre of AERE Harwell

Abstract

A study into the techniques available for the non-destructive testing of abrasive wheels was carried out for the Health and Safety Executive. These included X-radiographic, ultrasonic and resonance techniques. A series of fracture studies was also carried out to estimate the typical critical crack sizes for abrasive wheels in use and the results used as an aid to assessing the applicability of each technique. An ultrasonic pitch-catch technique was developed which can achieve the required resolution and is readily adaptable to practical situations. However, in the opinion of the manufacturers and users of abrasive wheels the current practice during manufacture and recommended operating procedures for use are sufficient to ensure the integrity of such wheels.