| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
2024 Graduate Student Poster Contest
|
| Presentation Title |
SPG-47: Interlaboratory Study on Creep-Fatigue Testing of Creep-Brittle Materials per ASTM E2760 |
| Author(s) |
Isabelle Heintz, Adam Thompson, Santosh Narasimhachary, Zach Harris |
| On-Site Speaker (Planned) |
Isabelle Heintz |
| Abstract Scope |
The objective of this study is to establish the variability of creep-fatigue experiments performed per ASTM E2760 to inform the precision and bias statement for creep-brittle materials. An interlaboratory study was executed with seven participating labs from Canada, Japan, Germany, and the United States conducting creep-fatigue testing per ASTM E2760 on IN718 at 600 ℃ for dwell times of 60 seconds and 600 seconds. A total of 27 specimens were tested across these two conditions, with 22 specimens (12 at 60 seconds, 10 at 600 seconds) meeting all required validity criteria for inclusion in the variability analysis. Evaluation of these data reveal that the variability of measured da/dN versus K relationships for creep-brittle IN718 is reduced by 50% relative to the results measured in a prior interlaboratory study on P91 steels that was used to inform the ASTM E2760 precision and bias statement for creep-ductile materials. |