| METADEX Antwortnummer 37 - © 1998 CSA |
| Title |
| | An Integrated Approach to NDT. |
| Author |
| | Birkbeck, G.J.; Farley, P.G.; Wise, S. |
| Publication Source |
| | Met. Constr. (Mar. 1983) 15, (3), 131-138
ISSN: 0307-7896 |
| Document Type |
| | Journal |
| Language |
| | English |
| Abstract |
| | The methods and principles of the complete defect evaluation approach used by British Rail for assessing the fitness for purpose of railway components are described. Ultrasonic testing is the most common NDT technique used. Eddy current testing and magnetic particle inspection are also mentioned. Examples are cited of detecting and sizing cracks under the wheel hubs in axles and at rail end bolt holes and of machining axles to remove defects. The approach involves the assessment of defects compared with service requirements so that components may be safely kept in service for increased periods depending on the frequency of inspection. Fracture mechanics principles are often used to determine the remaining useful life of a cracked component. Criteria for rejection, reference standards and the reference point concept are discussed. Photoelastic acoustic visualization using glass models is employed to update ultrasonic procedures, e.g. for a change in axle design. The approach could be applied to the NDT of welds.-AA |
| Accession Number |
| | 83(7):22-842 |
