標準號：BS EN 12543-5-1999
中文標準名稱：無損檢驗.無損檢驗用工業X射線系統的焦點特性.小型和微型聚焦X射線管有效焦點尺寸測量
英文標準名稱：Non-destructive testing - Characteristics of focal spots in industrial X-ray systems for use in non-destructive testing - Measurement of the effective focal spot size of mini and micro focus X-ray tubes
標準類型：H26
發布日期：1999/12/15 12:00:00
實施日期：1999/12/15 12:00:00
中國標準分類號：H26
國際標準分類號：19.100
適用范圍：This European Standard specifies a method for the measurement of focal spot dimensions within the range of 5 μm to 300 μm of X-ray systems up to and including 225 kV tube voltage, by means of radiographs of sharp edges. The image quality and the resolution of X-ray images highly depend on the characteristics of the focal spot. The imaging qualities of the focal spot are based on the two dimensional intensity distribution in the object plane. For certification purposes the radiographic technique is used. NOTE The same procedure can be used at higher kilovoitages by agreement but the accuracy of the measurement may be poorer.