کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
764445 | 896986 | 2006 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Failure due to structural degradation in turbine blades
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
During test run, tips of two high pressure turbine blades of an engine were found chipped off. The material of the blades is Udimet 500 and blades are used without any additional coating. The cause of failure is found to be intergranular crack(s) which started during exposure to high temperature. The phenomenon occurred at the pressure as well as the suction sides and the regions close to the tip experienced high distress. Cracks initiated from the oxidized/corroded grain boundaries and propagated to the critical length to result in catastrophic fracture. An indication of the blades running hot is the microstructural degradation. The mechanism of failure was hot corrosion followed by high cycle fatigue.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Failure Analysis - Volume 13, Issue 3, April 2006, Pages 452–463
Journal: Engineering Failure Analysis - Volume 13, Issue 3, April 2006, Pages 452–463
نویسندگان
N. Ejaz, A. Tauqir,