کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
787707 1466153 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of the steam temperature fluctuations during steady state operation on the remnant life of the superheater header
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
The effect of the steam temperature fluctuations during steady state operation on the remnant life of the superheater header
چکیده انگلیسی

Ligament cracking in superheater headers is generally understood to be associated with thermal transients that occur during starts. However, recent analysis has shown that under some circumstances stress changes due to the steam temperature fluctuations during continued operation also contribute to crack growth. The correlation of the stress range due to these temperature fluctuations has been established by carrying out a transient thermo-mechanical FE analysis. The contribution to fatigue crack propagation of existing defects has been quantified. Frequent thermal fluctuations at steady state operation were identified as the most influential factor for the remnant life of the header.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Pressure Vessels and Piping - Volume 83, Issue 5, May 2006, Pages 349–358
نویسندگان
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