FUNDAMENTAL STUDY ON DETECTABILITY OF SUBSURFACE DEFECTS BY RADIOGRAPHIC TESTING
Source abstract
Abstract
Abstract The influence of the beam angle to the defect surface and the image quality of radiographs on measuring the defect height and the defect depth were investigated. Specimens having a subsurface defect were produced by diffusion bonding between a smooth specimen and a specimen having a slit-like surface defect machined using an electrospark machine. Beam angle more than 15° was desirable in order to measure the defect height and the defect depth. When measuring the defect height, it is necessary to discern one finer wire of the image quality indicator than that necessary only to detect the image of the slit-like defect. There was a good correlation between the minimum discernible wire diameter and the value of the density of the contrastrneter "'0/(0' '"T), but the essential value of ▵ D/(D.▵T) necessary to discern the wire seems to depend on the combination of the specimen thickness, the radiation sources, the Xvray films and the intensifying screens.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Welding Techniques and Residual Stresses · Advanced Surface Polishing Techniques · Advanced X-ray and CT Imaging
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (13)
Show source-provided references
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