This B31J Standard provides stress intensification factors (i-factors) and flexibility factors (k-factors), with procedures for their determination for metallic piping components and joints. This Standard sets forth stress intensification factors, flexibility factors, and engineering procedures deemed appropriate for the safe determination of the fatigue and sustained load capacity of metallic piping components or joints in typical services.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 4<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | ASME B31 COMMITTEE ROSTER <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | CORRESPONDENCE WITH THE B31 COMMITTEE <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | ASME B31J-2023 SUMMARY OF CHANGES <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 1 GENERAL 2 DEFINITIONS 3 CONTENTS OF STANDARD 4 REFERENCE <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Tables Table 1-1 Flexibility and Stress Intensification Factors <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Figures Figure 1-1 Orientations for Sketches 2.1 Through 2.6 of Table 1-1 Table 1-2 Moment-Rotation Relationships for Sketches 2.1 Through 2.6 of Table 1-1 Table 1-3 Flanged End Correction Coefficients for Sketches 2.1 Through 2.6 of Table 1-1 <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Figure 1-2 Orientations for Bends Figure 1-3 Branch Dimensions <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Figure 1-4 Flexibility and Stress Intensification Factors for Bends and Miters Figure 1-5 Flanged End Corrections for Bends and Miters <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Figure 1-6 Flexibility Element Locations Figure 1-7 Fillet Weld Contours <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Figure A-1.1-1 Representative Cantilever Test Arrangements NONMANDATORY APPENDIX A STRESS INTENSIFICATION FACTOR (SIF) TEST PROCEDURE A-1 GENERAL <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Figure A-1.3-1 Displacement and Force or Moment Recorded During Loading and Unloading of a Test Specimen in Both Positive and Negative Directions, With Linear Displacement A-2 STRESS INTENSIFICATION FACTOR <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Table A-2.4-1 Stress Intensification Increase Factor <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | A-3 VARIATIONS IN MATERIALS AND GEOMETRY A-4 TEST REPORT <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | A-5 NONMANDATORY COMMENTARY ON SIF TEST PROCEDURE <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | A-6 REFERENCES <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | Figure B-1-1 Branch Connection Specimen NONMANDATORY APPENDIX B TEST METHOD FOR DETERMINING BRANCH CONNECTION FLEXIBILITY FACTORS B-1 GENERAL <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Figure B-1-2 Multiple k-Factor Tests on Single Assembled Position Table B-1-1 Load-Deflection Pairs for Single Assembled Orientation Shown in Figure B-1-2 <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Figure B-2-1 Example Flexibility Factor Branch Load Assembly Orientation B-2 DEFINITIONS <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | B-3 NOMENCLATURE B-4 TEST PROCEDURE <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | Figure B-4.4-1 Detailed Beam Model for Through-Branch k-Factor Test <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | Figure B-4.4-2 Beam Model <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | Figure B-4.6-1 Load-Displacement Diagram <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | Figure B-6-1 Unreinforced Branch Connection With (Left) and Without Ovalization Restraint Plates in Place B-5 NUMBER OF TEST SPECIMENS B-6 VARIATIONS AND SIMILARITIES IN MATERIALS AND GEOMETRY B-7 TEST REPORT <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | B-8 OVALIZATION RESTRAINT PLATES B-9 REFERENCES <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | Figure C-2-1 Rotational Stiffness Location Between Two Nodes NONMANDATORY APPENDIX C USE OF BRANCH CONNECTION FLEXIBILITY FACTORSIN PIPING SYSTEM ANALYSIS C-1 NOMENCLATURE C-2 GENERAL <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | Figure C-2-2 Branch Connection In-Plane Direction C-3 REFERENCES <\/td>\n<\/tr>\n | ||||||
| 49<\/td>\n | Figure C-2-3 Branch Connection Flexibilities Used on Branch Side Only Figure C-2-4 Branch Connection Flexibilities Used on Run Side Only Figure C-2-5 Branch and Run Flexibilities Used Together (in Series) <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | Figure C-2-6 Rotational Flexibility Definitions Figure C-2-7 Branch and Run SIF and k-Factor Intersection Orientations <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | Figure D-1-1 Standard Sustained Load Setup NONMANDATORY APPENDIX D SUSTAINED LOAD TEST PROCEDURE D-1 GENERAL <\/td>\n<\/tr>\n | ||||||
| 52<\/td>\n | Figure D-1-2 Bend Sustained Load Setup D-2 DEFINITIONS <\/td>\n<\/tr>\n | ||||||
| 53<\/td>\n | Figure D-2-1 Load-Displacement Diagram Illustrating Typical Pressure-Sensitive, Not Pressurized, and Not-Pressure-Sensitive Load-Deflection Behavior D-3 NOMENCLATURE <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | D-4 TEST PROCEDURE <\/td>\n<\/tr>\n | ||||||
| 55<\/td>\n | Figure D-3-1 Load-Displacement Diagram at ds = 2de Limit <\/td>\n<\/tr>\n | ||||||
| 58<\/td>\n | D-5 SUSTAINED LOAD EVALUATION USING TEST RESULTS <\/td>\n<\/tr>\n | ||||||
| 59<\/td>\n | D-6 VARIATIONS AND SIMILARITIES IN MATERIALS AND GEOMETRY D-7 TEST REPORT D-8 SAFEGUARDING PRESSURIZED TWICE ELASTIC SLOPE TESTS <\/td>\n<\/tr>\n | ||||||
| 60<\/td>\n | Table D-8.1-1 Distance and Precaution for Pressurized Twice Elastic Slope Test <\/td>\n<\/tr>\n | ||||||
| 61<\/td>\n | Table D-8.1-2 Inadvertent Air Volumes in Test Specimens D-9 NONMANDATORY COMMENTARY ON THE SUSTAINED LOAD TEST PROCEDURE <\/td>\n<\/tr>\n | ||||||
| 62<\/td>\n | D-10 REFERENCES <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" ASME B31J-2023 Stress Intensification Factors (i-Factors), Flexibility Factors (k-Factors), and Their Determination for Metallic Piping Components<\/b><\/p>\n |