ASTM E1165-20
Standard Test Method for Measurement of Focal Spots of Industrial X-Ray Tubes by Pinhole Imaging

Standard No.

ASTM E1165-20

Release Date

2020

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM E1165-20

Scope

1.1 The image quality and the resolution of X-ray images are especially sensitive to the characteristics of the focal spot. The imaging qualities of the focal spot are based on its two dimensional intensity distribution as seen from the detector plane. 1.2 This test method provides instructions for determining the effective size (dimensions) of standard and mini focal spots of industrial X-ray tubes for focal spot dimensions from 100 µm up to several mm of X-ray sources up to 600 kV tube voltage. Smaller focal spots down to 50 µm could be evaluated with less precision. This determination is based on the measurement of an image of a focal spot that has been radiographically recorded with a “pinhole” technique. An alternative method with a plaque hole IQI may be found in the Annex A, which covers the same focal spot sizes. 1.3 Smaller focal spots should be measured using Test Method E2903 using the projection of an edge. 1.4 This test method may also be used to determine the change in focal spot size that may have occurred due to tube age, tube overloading, and the like. This would entail the production of a focal spot radiograph (with the pinhole method) and an evaluation of the resultant image for pitting, cracking, and the like. 1.5 Units—Values stated in SI units are to be regarded as the standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM E1165-20 Referenced Document

• ASTM E1000 Standard Guide for Radioscopy
• ASTM E1025 Standard Practice for Design, Manufacture, and Material Grouping Classification of Hole-Type Image Quality Indicators (IQI) Used for Radiology
• ASTM E1255 Standard Practice for Radioscopy
• ASTM E1742 Standard Practice for Radiographic Examination*， 2024-04-21 Update
• ASTM E1815 Standard Test Method for Classification of Film Systems for Industrial Radiography
• ASTM E2002 Standard Practice for Determining Total Image Unsharpness in Radiology
• ASTM E2033 Standard Practice for Computed Radiology (Photostimulable Luminescence Method)
• ASTM E2339 Standard Practice for Digital Imaging and Communication in Nondestructive Evaluation (DICONDE)*， 2021-12-01 Update
• ASTM E2698 Standard Practice for Radiographic Examination Using Digital Detector Arrays
• ASTM E2736 Standard Guide for Digital Detector Array Radiography*， 2022-12-01 Update
• ASTM E2903 Standard Test Method for Measurement of the Effective Focal Spot Size of Mini and Micro Focus X-ray Tubes
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
• ASTM E999 Standard Guide for Controlling the Quality of Industrial Radiographic Film Processing

ASTM E1165-20 history

• 2020 ASTM E1165-20 Standard Test Method for Measurement of Focal Spots of Industrial X-Ray Tubes by Pinhole Imaging
• 2017 ASTM E1165-12(2017) Standard Test Method for Measurement of Focal Spots of Industrial X-Ray Tubes by Pinhole Imaging
• 2012 ASTM E1165-12 Standard Test Method for Measurement of Focal Spots of Industrial X-Ray Tubes by Pinhole Imaging
• 2004 ASTM E1165-04(2010) Standard Test Method for Measurement of Focal Spots of Industrial X-Ray Tubes by Pinhole Imaging
• 2004 ASTM E1165-04 Standard Test Method for Measurement of Focal Spots of Industrial X-Ray Tubes by Pinhole Imaging
• 1992 ASTM E1165-92(2002) Standard Test Method for Measurement of Focal Spots of Industrial X-Ray Tubes by Pinhole Imaging
• 1992 ASTM E1165-92(1996)E1 Standard Test Method for Measurement of Focal Spots of Industrial X-Ray Tubes by Pinhole Imaging