GB/T 25758.5-2010
Non-destructive testing.Characteristics of focal spots in industrial X-ray systems for use in non-destructive testing.Part 5: Measurement of the effective focal spot size of mini and micro focus X-ray tubes (English Version)

Standard No.: GB/T 25758.5-2010
Language: Chinese, Available in English version
Release Date: 2010
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 25758.5-2010

Scope: This Part of GB/T 25758 specifies the method for measuring the focus size by X-ray photographs with clear edges. This method requires that the focus size is between 5 μm and 300 μm, and the tube voltage of the X-ray tube can reach up to 225 kV. The quality and resolution of an X-ray image depends largely on the characteristics of the focal point. The focal imaging quality is based on the two-dimensional radiation intensity distribution at the target plane. For identification purposes, radiographic techniques are used. Note: If allowed, this measurement method can be used for higher kV voltage system, but the measurement accuracy may be reduced.

GB/T 25758.5-2010 Referenced Document

GB/T 19348.1 Non-destructive testing.Industrial radiographic film.Part 1:Classification of film systems for industrial radiography*， 2014-06-24 Update
GB/T 25758.1 Non-destructive testing.Characteristics of focal spots in industrial X-ray systems for use in non-destructive testing.Part 1:Scanning method

2010 GB/T 25758.5-2010 Non-destructive testing.Characteristics of focal spots in industrial X-ray systems for use in non-destructive testing.Part 5: Measurement of the effective focal spot size of mini and micro focus X-ray tubes