کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
790810 1466106 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Acoustic emission during monotonic and cyclic fracture toughness tests of 304LN weldments
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Acoustic emission during monotonic and cyclic fracture toughness tests of 304LN weldments
چکیده انگلیسی

Determination of initiation fracture toughness of ductile materials is a challenging task due to the ambiguity associated with the identification of the point of departure of the initial linear region of the fracture resistance curve. Acoustic emission (AE) is a technique that is capable of directly indicating the crack initiation point during fracture toughness tests using a single specimen. The objective of this investigation is to illustrate some results related to monotonic and cyclic fracture behaviour of AISI 304LN weldments estimated by this ‘combined type’ experiment. The use of cyclic J-integral tests has been proposed to simulate the deleterious effect of periodic load reversals during monotonic loading. A comparative analysis of all these data leads to the conclusion that the fracture toughness of a material determined from AE parameters is generally conservative compared to that obtained by conventional techniques.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Pressure Vessels and Piping - Volume 87, Issue 10, October 2010, Pages 543–549
نویسندگان
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