کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
770072 897445 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Failure analysis of a locomotive turbocharger main-shaft
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Failure analysis of a locomotive turbocharger main-shaft
چکیده انگلیسی

A failure investigation has been conducted on a locomotive turbocharger main-shaft. The fracture position is located at a sharp edged groove between two journals with different cross-sectional area. Fractography investigation indicates that the rotating bending fatigue is the dominant failure mechanism of the main-shaft. Detailed metallurgical analysis indicates the root fillet region of the groove had subjected to abnormal high-temperature resulting from the intense friction between the bearing-sleeve and the assisted pushing bearing, which makes the fatigue strength of the root fillet region of the groove decrease. Over-small root fillet radius of the groove by which stress concentration is created facilitates the fatigue cracks to initiate in the root fillet region.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Failure Analysis - Volume 16, Issue 1, January 2009, Pages 495–502
نویسندگان
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