کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5019797 1369630 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of the creep crack initiation properties using pre-cracked small punch tests
ترجمه فارسی عنوان
تعیین خواص آغاز خزش ترک با استفاده از آزمون های پانچ کوچک قبل از ترک خورده
کلمات کلیدی
آغاز خیزش ترک، آزمایشات پانچ کوچک، برش ها،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
The use of pre-cracked small punch creep test specimens (p-SPCT) is analyzed in this paper as an alternative method to obtain the Creep Crack Initiation (CCI) time in those cases where there is not enough material to use CT specimens. The material selected was an AZ31B magnesium alloy. The geometry of the specimens used was 10 × 10 mm square with a thickness of 0.5 mm. An initial crack-like notch was created in the SPT specimens by means of a laser micro-cutting technique. Conventional compact specimens (CT-20) were tested at T = 150 °C as a reference for CCI determination. The definition of an equivalent load for p-SPCT was seen to be a good methodology, and a λ parameter was defined to convert the p-SPCT to an equivalent C(T) load that produces the same CCI time. The influence of temperature and material on the λ parameter still remains to be investigated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical and Applied Fracture Mechanics - Volume 86, Part A, December 2016, Pages 39-44
نویسندگان
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