Abstract
This paper presents a numerical method to extract ductile fracture toughness from notched small punch test data using FE ductile damage analysis based on the stress-modified fracture strain model. To validate the proposed method, analysis results are compared with series of mechanical (notched tensile, fracture toughness and small punch) test data for three different materials; low alloy steel SA508 Gr.3, TP316L austenitic stainless steel and CF8M cast austenitic stainless steel. Comparison with experimental fracture toughness data shows that the proposed method can predict fracture initiation values relatively well and tearing resistance conservatively.
| Original language | English |
|---|---|
| Pages (from-to) | 204-219 |
| Number of pages | 16 |
| Journal | International Journal of Pressure Vessels and Piping |
| Volume | 139-140 |
| DOIs | |
| Publication status | Published - 2016 Mar 1 |
Bibliographical note
Funding Information:This research was supported by Engineering Research Center Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Science, ICT and Future Planning ( NRF-2007-0056094 ) and the Power Generation & Electricity Delivery of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Ministry of Knowledge Economy, Republic of Korea (No. 20101020300710 ).
Publisher Copyright:
© 2016 Elsevier Ltd.
Keywords
- Ductile fracture simulation
- Finite element damage analysis
- Fracture toughness estimation
- Notched small punch test
- Stress-modified fracture strain
ASJC Scopus subject areas
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering