摘要:
This invention relates to a method for assessing the condition of at least a portion of a pipeline to predict the possibility of occurrence of leakage from the pipeline. The method includes the steps of identifying at least one portion of the pipeline to be assessed, undertaking an assessment of the wall of the portion to identify defects located thereon and the assessment includes identifying the depth, width and length of identified defects and including reference to a value for the pressure of the fluid passing through the pipeline portion. This allows the condition of the pipeline at the portions of the same which are most critical to be identified and this is used to provide an indication of the pipeline as a whole without the need to investigate the entire pipeline.
摘要:
The invention concerns a device for non-destructive control (1) of a component (4) by analyzing distribution of a leakage magnetic field emitted by the component when it is subjected to an exciting magnetic field, comprising means for generating an exciting magnetic field inside the component to be tested, and means for detecting and measuring the distribution of the magnetic field. The set of means is integrated in a flexible housing (2) to form a device in the form of a flexible coating for being fixed on a region of the surface of the component to be tested (4). The invention is useful for non-destructive testing of aircraft components, but may also be used in all industrial sectors where testing the integrity of components is important, such as the automotive, railway, marine or nuclear industry.
摘要:
A method and apparatus for high speed magnetic detection of surface fatigue cracks in railway rails. The magnetic material of the rail is magnetised by touch magnetisation using a permanent magnet (31), leaving a remanent magnetic field. A sensor head (30, 50) having a plurality of Hall effect sensors (32) senses stray flux generated in the vicinity of surface fatigue in the rail head by the remanent magnetic field. The sensor head (30, 50) may incorporate a proximity sensor (60) to compensate for variations in sensor height. The apparatus may be mounted on a conventional track recording vehicle (TRV) for use in routinely monitoring the surface fatigue severities in rail along a railway.