Crack Analysis Of A Gasoline Engine Crankshaft

Ali KESKİN; Kadir AYDIN

Makale detayları

Crack Analysis Of A Gasoline Engine Crankshaft

Yazarlar:

Ali KESKİN | Kadir AYDIN

Yayıncı:

Gazi University

Dergi:

Gazi University Journal of Science 2010 Vol.23 Issue 4, pp.487-492

Belge Tipi:

Makale

Yayın Tarihi:

9/2010

Belge Dili:

İngilizce

Document ID (Org No.):

2000429766

eISSN:

2147-1762

Özet:

 

 

In this study, failure analysis of a crankshaft was carried out. The crankshaft made of nodular graphite cast iron was used in a gasoline engine. The cracks propagated axially on surface of the 4 th pin journal. Microscopic observation was conducted on the surface of journals. Mechanical and metallurgical properties of the crankshaft including chemical composition, micro-hardness, tensile properties and roughness were studied and compared with the specified properties of the crankshaft materials. As a result of the analyses, the main reason of failure was determined as thermal fatigue because of contact of journal and bearing surface. This condition leads to the formation and growth of fatigue cracks. The contact is probably resulted from defective lubrication or high operating oil temperature. In addition, the contact caused scratches on surface of the 4 th  pin journal and 5  main journal.  

 Keywords: Crankshaft failure, Cracks, Thermal fatigue, Automotive failures 

.

Makale detayları

Crack Analysis Of A Gasoline Engine Crankshaft

Yazarlar: Ali KESKİN | Kadir AYDIN

Yayıncı: Gazi University

Dergi: Gazi University Journal of Science 2010 Vol.23 Issue 4, pp.487-492

Belge Tipi: Makale

Yayın Tarihi: 9/2010

Belge Dili: İngilizce

Document ID (Org No.): 2000429766

eISSN: 2147-1762

Sayı

Yazarlar:

Ali KESKİN | Kadir AYDIN

Yayıncı:

Gazi University

Dergi:

Gazi University Journal of Science 2010 Vol.23 Issue 4, pp.487-492

Belge Tipi:

Makale

Yayın Tarihi:

9/2010

Belge Dili:

İngilizce

Document ID (Org No.):

2000429766

eISSN:

2147-1762