Abstract
In the present work, its authors present the new results obtained on the creation and development of an engineering approach to the assessment of stress raisers in the metal structures of dragline excavators, convenient to be applied in the express diagnostics system to test the condition of such machines. The main result of this work is the conclusion that the value of the geometric stress concentration factor for the fillet weld of metal structures of the excavator arm EH-10/70A under working conditions can be written using the Afanasiev formula.
Highlights
The principal characteristic feature of a single-bucket dragline excavator is the presence of a large number of welded metal structures in their design
The stress factor can be characterized by a geometric stress concentration factor [1 and others]
At today 's level of our knowledge and taking into account that the cycle of our research has not yet been completed, it is possible to recommend to focus on the Afanasiev formula using the system of express diagnostics to evaluate the draglain excavator condition
Summary
The principal characteristic feature of a single-bucket dragline excavator is the presence of a large number of welded metal structures in their design. The main purpose of the papers planned by the authors is to determine under what conditions and in what range a given formula of TKK can be applied; which formula is more effective and more accurate for mining machinery, in particular, for draglines. In parallel, this will involve the development of appropriate software and the synthesis of a scientifically sound methodology for the selection and application of nondestructive inspection technique
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