AS 3670-1989

1 - AS 3670-1989 NON-DESTRUCTIVE TESTING-ULTRASONIC TESTING OF UNIVERSAL BEAMS AND COLUMNS
4 - PREFACE
4 - CONTENTS
5 - 1 SCOPE.
5 - 2 REFERENCED DOCUMENTS.
5 - 3 DEFINITIONS.
5 - 3.1 Discontinuity indication
5 - 3.2 Significant discontinuity
5 - 3.3 Lamination
5 - 3.4 Inclusion cluster
5 - 3.5 Inclusionstringer
5 - 4 EQUIPMENT.
5 - 4.1 General.
5 - 4.2 Probes.
5 - 4.2.1 General
5 - 4.2.2 Protective diaphragms
5 - 4.2.3 Probe size
5 - 4.3 Presentation.
5 - 4.4 Gain control.
5 - 4.5 Couplant.
5 - 4.6 Equi pment checks.
6 - 5 TESTING PROCEDURE.
6 - 5.1 General.
6 - 5.2 Surface condition.
6 - 5.3 Sensitivity.
6 - 5.4 Scanning method.
6 - 5.5 Evaluation-sensitivity levels.
6 - 5.5.1 General
6 - 5.5.2 Web or flange nominal thickmess from 5 mm to 15 mm
6 - 5.5.3 Web or flange nominal thickness of over 15 mm to 40 mm
7 - 5.5.4 Web or flange nominal thickness of over 40 mm
7 - 5.6 Referee testing.
7 - 6 SIZING OF DISCONTINUITIES.
7 - 6.1 Laminations.
7 - 6.2 Inclusion clusters.
7 - 6.3 Inclusion stringers.
7 - 7 QUALITY GRADING-LEVEL 1 REQUIREMENTS.
7 - 7.1 Laminar discontinuities.
7 - 7.2 Inclusion discontinuities.
7 - 8 REPORT.
7 - 8.1 General.
7 - 8.2 Record of test.
7 - 8.3 Test report.
9 - APPENDIX A - PURCHASING GUIDELINES
9 - A1 GENERAL.
9 - A2 INFORMATION TO BE SUPPLIED BY THE PURCHASER.
10 - APPENDIX B - SIZING METHODS
10 - B1 PROCEDURE FOR SIZING LAMINATIONS USING 6 dB DROP TECHNIQUE.
10 - B2 PROCEDURE FOR SIZING INCLUSION CLUSTER DISCONTINUITIES USING THE LAST SIGNIFICANT ECHO TECHNIQUE