کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
775431 898325 2010 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The Theory of Critical Distances as an alternative experimental strategy for the determination of KIc and ΔKth
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
The Theory of Critical Distances as an alternative experimental strategy for the determination of KIc and ΔKth
چکیده انگلیسی

The present technical note is concerned with the use of the Theory of Critical Distances, applied in the form of the Point Method, to estimate the range of the threshold value of the stress intensity factor, ΔKth, as well as the plane strain fracture toughness, KIc, of conventional engineering materials. In more detail, it is shown that ΔKth can efficiently be evaluated by measuring two fatigue limits: the plain fatigue limit and a second fatigue limit generated by testing samples containing a stress concentration feature such as a notch. The KIc, on the other hand, can be accurately estimated by using experimental results obtained by testing samples containing notches of two different sharpnesses. The accuracy and reliability of the proposed experimental methodology was checked by using a large amount of experimental results taken from the literature. Such a systematic validation exercise allowed us to fully confirm that the Theory of Critical Distances is not only an accurate static and fatigue assessment technique, but it can also be considered as an efficient experimental strategy suitable for estimating the classical Linear Elastic Fracture Mechanics material properties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 77, Issue 9, June 2010, Pages 1492–1501
نویسندگان
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