کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1450576 | 988738 | 2006 | 9 صفحه PDF | دانلود رایگان |
We suggest a new instrumented indentation technique for estimating fracture toughness of ductile materials. This technique is based on two key concepts. First, the indentation energy to the characteristic fracture initiation point during indentation may be closely related to a material’s resistance to fracture, i.e., fracture toughness. Second, the characteristic fracture initiation point can be determined by exploiting the basic concepts of continuum damage mechanics. To verify the applicability of the suggested technique, indentation tests and conventional fracture toughness tests were performed on four ductile materials. The estimated fracture toughness values obtained from the indentation technique showed good agreement (within approximately 10% error) with those from conventional fracture toughness tests.
Journal: Acta Materialia - Volume 54, Issue 4, February 2006, Pages 1101–1109