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字数:16151,页数:31 附任务书,开题报告 无损探伤是利用是利用射线感光材料（通常用射线感光胶片），放在被透视件的后面接受来自透过事件后的不同强度分布的射线。因为射线强度与胶片乳剂的摄影作用，在正常条件下成正比。因而胶片在射线作用下形成潜影，经暗室处理后，就会显示出物体的结构图象。根据底片上影象的形状及其黑度的不均匀程度，就可以评定被测试中有无缺陷及缺陷的性质，形状，大小和位置。此法的优点是：灵敏度高，直观，可靠，重复性好，是射线探伤法中应用最广的一种方法。
By lossless crack detection characteristic Abstract: The lossless crack detection is the use is uses the beam photosensitive material (usually with beam light sensitive film), places is accepted by perspective behind from after event's different intensity distributed beam. Because of the beam intensity and the film emulsion's photographic function, is proportional under the normal condition. Therefore the film forms under the actinism dives the shade, after darkroom processing, will demonstrate the object the structure image. According to the negative on the phantom shape and can the blackness non-uniform degree, whether there is evaluate is tested the flaw and the flaw nature, the shape, the size and the position.
第1章 射线探伤………………………………………………………3 论无损探伤的特点相关范文 |
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