AS 2083-1981

1 - AS 2083-1981 CALIBRATION BLOCKS AND THEIR METHODS OF USE IN ULTRASONIC TESTING
4 - PREFACE
5 - CONTENTS
6 - SECTION 1. SCOPE AND GENERAL
6 - 1.1 SCOPE.
6 - 1.2 APPLICATION.
6 - 1.3 DEFINITIONS.
6 - 1.4 CONSTRUCTION OF BLOCKS.
6 - 1.4.1 Material.
6 - 1.4.2 Dimensions.
6 - 1.4.3 Surface Finish.
7 - SECTION 2. REQUIREMENTS FOR CALIBRATION BLOCK No 1 AND METHODS OF USE
7 - 2.1 DIMENSIONS.
7 - 2.2 METHODS OF USE- NORMAL PROBES.
7 - 2.2.1 Probe Positions.
7 - 2.2.2 Calibration of Test Range.
7 - 2.2.3 Assessment of Horizontal Linearity (Method No 1).
7 - 2.2.4 Assessment of Horizontal Linearity (Method No 2).
9 - 2.2.5 Assessment of Vertical Linearity.
9 - 2.2.6 Measurement of Dominant Frequency.
9 - 2.2.7 Assessment of Resolution-Normal Probes.
9 - 2.2.8 Assessment of Resolution by Measurement of Pulse Length
12 - 2.2.9 Assessment of Overall System Gain.
12 - 2.3 METHODS OF USE-ANGLE PROBES.
12 - 2.3.1 Calibration of Test Range.
14 - 2.3.2 Determination of Probe Index.
14 - 2.3.3 Determination of Beam Angle.
14 - 2.3.4 Setting of Reference Sensitivity.
14 - 2.3.5 Assessment of Beam Alignment.
14 - 2.3.6 Measurement of Dominant Frequency.
14 - 2.3.7 Assessment of Resolution by Measurement of Pulse Length
14 - 2.3.8 Assessment of Overall System Gain.
17 - SECTION 3. REQUIREMENTS FOR CALIBRATION BLOCK No 2 AND METHODS OF USE
17 - 3.1 DIMENSIONS AND SURFACE IDENTIFICATION.
17 - 3.2 METHODS OF USE- NORMAL PROBES.
17 - 3.3 METHODS OF USE- ANGLE PROBES.
17 - 3.3.1 Measurement of Beam Angle.
17 - 3.3.2 Assessment of Beam Profile.
17 - 3.3.3 Assessment of Overall System Gain.
20 - SECTION 4. REQUIREMENTS FOR CALIBRATION BLOCK No 3 AND METHODS OF USE
20 - 4.1 DIMENSIONS.
20 - 4.2 METHODS OF USE- ANGLE PROBES.
21 - SECTION 5. REQUIREMENTS FOR CALIBRATION BLOCK No 4 AND METHOD OF USE
21 - 5.1 DIMENSIONS.
21 - 5.2 METHOD OF USE.
22 - SECTION 6. REQUIREMENTS FOR CALIBRATION BLOCK No 5 AND METHODS OF USE
22 - 6.1 DIMENSIONS.
22 - 6.2 METHOD OF USE-NORMAL PROBES.
22 - 6.3 METHODS OF USE- ANGLE PROBES.
22 - 6.3.1 Calibration of Test Range.
22 - 6.3.2 Determination of Probe Index.
22 - 6.3.3 Determination of Approximate Beam Angle
22 - 6.3.4 Setting of Reference Sensitivity.
24 - SECTION 7. REQUIREMENTS FOR CALIBRATION BLOCK No 6 AND METHODS OF USE
24 - 7.1 DIMENSIONS.
24 - 7.2 ASSESSMENT OF RESOLUTION.
26 - SECTION 8. CALIBRATION PROCEDURES NOT REQUIRING SPECIFIC BLOCKS
26 - 8.1 MEASUREMENT OF DEAD ZONE LENGTH USING NORMAL PROBES.
26 - 8.2 MEASUREMENT OF DEAD ZONE LENGTH USING ANGLE PROBES.
28 - SECTION 9. CALIBRATION AND REFERENCE BLOCKS CONTAINING FLAT-BOTTOMED HOLES
28 - 9.1 DIMENSIONS.
28 - 9.2 CONSTRUCTION OF BLOCKS.
28 - 9.2.1 General.
28 - 9.2.2 Material.
28 - 9.3 ULTRASONIC RESPONSE.
28 - 9.3.1 General.
29 - 9.3.2 Area-amplitude Blocks.
29 - 9.3.3 Distance-amplitude Blocks.
30 - 9.4 REFERENCE BLOCKS- IDENTIFICATION.
30 - 9.5 METHODS OF USE OF BLOCKS.
30 - 9.5.1 General.
30 - 9.5.2 Area-amplitude Blocks.
30 - 9.5.3 Distance-amplitude Blocks.
32 - SECTION 10. REQUIREMENTS FOR CALIBRATION BLOCK No 7 AND METHOD OF USE IN ULTRASONIC THICKNESS MEASUREMENTS
32 - 10.1 GENERAL.
32 - 10.2 DIMENSIONS.
32 - 10.3 METHOD OF USE.
33 - APPENDIX A - RECOMMENDATIONS ON THE USE OF ULTRASONIC TESTING EQUIPMENT

Specifies materials, dimensions and manufacture of seven different types of calibration blocks, and of calibration and reference blocks containing flat-bottomed holes. Procedures for use of each block in the calibration of equipment/probe combinations are described. Step by step procedures are included for assessment of vertical and horizontal linearity, and overall system gain, and for measurement of dominant frequency, pulse length, beam angle, alignment of beam and procedures for calibrating test equipment used for thickness measurements. Guidance on the frequency of calibration of test equipment is given in an appendix.

This standard specifies requirements for a range of calibration blocks and their methods of use in ultrasonic testing.