Abstract
Formulation of the problem. The resource of a marine diesel engine before overhaul depends mainly on the state of the crank mechanism, and the crankshaft is the main link in this mechanism. Crankshafts are among the most critical parts of engines and are operated under conditions of variable loads. Shaft journals are subject to sliding friction at high speeds and high specific pressures. The crankshaft is one of the most important expensive engine parts (its cost is more than 10% of the cost of the entire engine) - to a large extent determines its resource [1-3]. During the operation of such complex and expensive units as internal combustion engines, sudden failures occur, which are caused by parts with defects that require replacement or restoration, and in most cases the necessary technologies for this are not available.
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