Abstract
In this study, to evaluate conservatism of various fatigue life evaluation procedures, fatigue tests were conducted using compact tension (CT) specimens with a round notch, made of A516 Gr.70 carbon steel and A240 TP304 stainless steel, under load-controlled cyclic condition. Experimental fatigue failure cycles were measured and compared with predicted fatigue lives using two different life evaluation methods; (1) Design-By-Analysis (DBA) procedure given in ASME B&PV Code, Sec. III, Div. 1, Subsec. NB-3200 and (2) structural stress-based approach provided in ASME B&PV Code, Sec. VIII, Div. 2, Part 5. To predict fatigue failure cycles, three-dimensional elastic finite element analysis was conducted. Fatigue lives were predicted by both design fatigue curve given in ASME B&PV Code, Sec. III, Div. 1, Appendices and best-fit fatigue curve suggested in NUREG/CR-6815 for the DBA procedure. Finally, fatigue lives evaluated by various methods were compared with test results, and then conservatism between each evaluation procedure was discussed.
| Translated title of the contribution | Investigation into Conservatism of Various Fatigue Life Evaluation Procedures Using Round-Notched CT Specimens |
|---|---|
| Original language | Korean |
| Pages (from-to) | 19-30 |
| Number of pages | 12 |
| Journal | 한국압력기기공학회 논문집 |
| Volume | 15 |
| Issue number | 2 |
| DOIs | |
| State | Published - Dec 2019 |