BS EN 12543-4-1999 无损检验.无损检验用工业X射线系统的焦点特性.边缘法

标准号：BS EN 12543-4-1999
中文标准名称：无损检验.无损检验用工业X射线系统的焦点特性.边缘法
英文标准名称：Non-destructive testing - Characteristics of focal spots in industrial X-ray systems for use in non-destructive testing - Edge method
标准类型：H26
发布日期：1999/12/15 12:00:00
实施日期：1999/12/15 12:00:00
中国标准分类号：H26
国际标准分类号：19.100
适用范围：This European Standard specifies the checking of focal spot dimensions above 0,5 mm of X-ray systems up to and including 500 kV tube voltage, by means of radiographs of sharp edges. The image quality and the resolution of X-ray images depend highly on the characteristics of the focal spot. The imaging qualities of a focal spot are based on the two dimensional intensity distribution in the object plane. The edge method is especially useful for the checking of focal spots under field conditions in order to find changes of the focal spot. It cannot be used for an absolute measurement of the focal spot. For absolute measurements the method according to annex A is applied.