Section 1 Introduction
Clasification Society 2024 - Version 9.40
Clasifications Register Guidance Information - Guidance Notes for the Calculation of Stress Concentration Factors, Fatigue Enhancement Methods and Evaluation of Fatigue Tests for Crankshafts, July 2021 - Chapter 3 Guidance for Calculation of Surface Treated Fillets and Oil Bore Outlets - Section 1 Introduction

Section 1 Introduction

Parent topic: Chapter 3 Guidance for Calculation of Surface Treated Fillets and Oil Bore Outlets

1.1 General

1.1.1 This Chapter deals with surface treated fillets and oil bore outlets. The various treatments are explained and some empirical formulae are given for calculation purposes. Conservative empiricism has been applied intentionally, in order to be on the safe side from a calculation standpoint.

1.1.2 Please note that measurements or more specific knowledge should be used if available. However, in the case of a wide scatter (e.g. for residual stresses) the values should be chosen from the end of the range that would be on the safe side for calculation purposes.

1.2 Definition of surface treatment

1.2.1 ‘Surface treatment’ is a term covering treatments such as thermal, chemical or mechanical operations, leading to inhomogeneous material properties – such as hardness, chemistry or residual stresses – from the surface to the core.

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