کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
771570 | 897644 | 2008 | 10 صفحه PDF | دانلود رایگان |

The load separation method was used to determine the plastic work factor (ηpl) for the double edge notch tension (DENT) geometry for power-law hardening materials. The resulting expression for ηpl compares favorably to the results of Rice, Paris, and Merkle. The results were also compared to ηpl calculated from the plastic J results in EPRI Handbook NP-1931 and substantial differences were noted. A dependence on gage length was identified in the load separation results which indicate a gage length to half-width ratio of at least 3 is required to ensure that all of the plastic displacement is fully sensed and that ηpl is independent of gage length. Additionally, a coupling term between crack size and material hardening exponent was identified in the geometric load separation function G.
Journal: Engineering Fracture Mechanics - Volume 75, Issue 18, December 2008, Pages 5177–5186