AS 2452.3-1985

1 - AS 2452.3-1985 NON-DESTRUCTIVE TESTING - DETERMINATION OF THICKNESS - USE OF ULTRASONIC TESTING
3 - PREFACE
3 - CONTENTS
4 - 1 SCOPE.
4 - 2 APPLICATION.
4 - 2.1 Base Line Survey.
4 - 2.2 Key Point Survey.
4 - 3 REFERENCED DOCUMENTS.
4 - 4 DEFINITIONS.
4 - 4.1 Nominal thickness (T)
4 - 4.2 Indicated thickness (Ti )
4 - 4.3 Reported thickness (T)
4 - 4.4 Testing authority
4 - 4.5 Delay block spacer
4 - 5 EQUIPMENT.
4 - 5.1 General.
4 - 5.2 A-scan presentation.
5 - 5.3 Digital and analog (meter) displays.
5 - 5.4 Couplant.
5 - 6 CALIBRATION.
5 - 6.1 General.
5 - 6.2 Calibration - A-scan presentation.
5 - 6.3 Calibration-digital and analog (meter) display.
5 - 7 PREPARATION OF TEST SURFACE.
5 - 8 SINGLE SPOT - SINGLE MEASUREMENT METHOD (SS).
5 - 8.1 Application.
5 - 8.2 Procedure.
5 - 9 SINGLE SPOT - DOUBLE MEASUREMENT METHOD (SD).
5 - 9.1 Application.
5 - 9.2 Procedure.
5 - 10 MULTIPLE SPOT MEASUREMENT METHOD (MS).
5 - 10.1 Application.
6 - 10.2 Procedure.
6 - 11 CLOSE GRID SURVEY METHOD (CG).
6 - 11.1 Application.
6 - 11.2 Procedure.
6 - 12 OPEN GRID MEASUREMENT METHOD (OG).
6 - 12.1 Application.
6 - 12.2 Procedure.
6 - 13 RECORD OF RESULTS.
6 - 14 TEST REPORT.
6 - 14.1 General.
6 - 14.2 Abnormal conditions.
7 - APPENDIX A - SUPPLEMENTARY INFORMATION
7 - A1 GENERAL.
7 - A2 TESTING AUTHORITIES.
8 - APPENDIX B - GUIDANCE ON THE DETERMINATION OF THICKNESS AT ELEVATED TEMPERATURES
9 - APPENDIX C - FACTORS AFFECTING PROBE SELECTION
9 - C1 GENERAL.
9 - C2 FREQUENCY.
9 - C3 SINGLE PROBES.
9 - C4 SINGLE PROBES WITH SPACERS.
9 - C5 TWIN PROBES.
10 - APPENDIX D - NOMINAL VELOCITY OF SOUND IN SOME COMMON MATERIALS
11 - APPENDIX E - DETERMINATION OF THICKNESS BY THE USE OF CORRECTION FACTORS AND CHARTS
11 - E1 GENERAL.
11 - E2 DETERMINATION OF THICKNESS BY MEANS OF A CORRECTION CHART
12 - E3 DETERMINATION OF THICKNESS BY THE USE OF A CORRECTION FACTOR
13 - APPENDIX F - FACTORS AFFECTING RESULTS AND ORDER OF ACCURACY
13 - F1 GENERAL.
13 - F2 DIGITAL AND ANALOG (METER) DISPLAYS - ABNORMAL VALUES.
13 - F2.1 No meter readout.
13 - F2.2 Readout approximately half or double anticipated thickness.
13 - F3 CURVATURE OR LACK OF PARALLELISM OF REFLECTING SURFACES
13 - F4 CORRODED REFLECTING SURFACES.
13 - F5 MULTIPLE ECHOES.
13 - F6 SURFACE COATINGS.
13 - F7 REPORTED ORDER OF ACCURACY.
15 - APPENDIX G - NOTES ON METHODS OF MEASUREMENT
15 - G1 SINGLE SPOT - SINGLE MEASUREMENT (SS).
15 - G2 SINGLE SPOT - DOUBLE MEASUREMENT (SD).
15 - G3 MULTIPLE SPOT MEASUREMENTS (MS).
15 - G4 GRID METHODS (CG AND OG).