Naslov
Structural durability validation of bearing girders in marine Diesel engines

Autori
Grubišić, Vatroslav ; Vulić, Nenad ; Sönnichsen, Samuel

Izvornik
Engineering Failure Analysis (1350-6307) 15 (2008), 4; 247-260

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, pregledni rad, znanstveni

Ključne riječi
marine Diesel engines; bearing girders; fatigue strength; design; manufacturing

Sažetak
The aim is to present the state-of-the-art methodology for structural durability evaluation of marine Diesel engines bearing girders and to describe the responsibility of engine designers, manufacturers and system suppliers. A real example of several engines of the same type, where fatigue cracks arose in certain areas of their bearing girders, has been presented. The extensive investigation revealed the cause of the damage. The proper design was proved by properly implemented state-of-the-art design methods and by experimental verification of calculations in two ships. Quality and test specifications prescribed by the licensor have been found correct. It is concluded that the damage cause was the impermissible quality of worldwide manufacture and improper production repair welding during manufacture.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja, Strojarstvo

POVEZANOST RADA