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BSI 23/30387011 DC:2023 Edition

$13.70

BS EN IEC 63230 Standardized technical specifications governing fatigue of hydraulic turbine runners : from design to quality assurance

Published By Publication Date Number of Pages
BSI 2023 47
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PDF Catalog

PDF Pages PDF Title
6 FOREWORD
8 1 Scope
9 2 Normative references
10 3 Terms, definitions, symbols and units
3.1 General
3.2 General terminology
13 3.3 Units
14 3.4 Acronyms
3.5 Subjective terms
15 4 Stress history from expected load events
4.1 Purpose and scope
4.2 Load events
16 4.3 Stress history
17 4.4 Stresses determined by calculation
4.4.1 Stresses in steady state conditions
4.4.1.1 Static stresses
4.4.1.2 Dynamic stresses
18 4.4.1.2.1 Periodic stresses
4.4.1.2.2 Stochastic stresses
22 4.4.2 Stresses in transient conditions
4.5 Stresses determined from on-site strain measurements
4.5.1 Test procedure
23 4.5.2 Instrumentation, acquisition and signal treatment
4.5.3 Hotspot stress history determination
4.5.3.1 Comparison with FEA strain pattern
24 4.5.3.2 Transposition using goodness-of-fit between FEA results and measurements
26 5 Fatigue life assessment
5.1 Purpose and scope
5.2 S-N curve assessment
5.2.1 Design S-N curve
28 5.2.2 Mean stress effect
29 5.2.3 Residual stress
5.2.4 Stress amplitude value and mean stress evaluation
5.2.5 Cumulated damage calculation
5.3 Fracture mechanics assessment
30 5.3.1 Loading conditions
31 5.3.2 Fatigue crack growth law
32 5.3.3 Fatigue crack growth threshold
33 5.3.4 Definition of flaw
5.3.5 Recommended limit to crack growth to be used in the calculation
34 5.3.6 Stress intensity factor solution
35 6 Manufacturing and quality assurance
6.1 Purpose and Scope
6.2 Engineering instruction for manufacturing
6.2.1 Designer responsibilities
6.2.2 Hotspot area definition
36 6.3 Quality management
6.4 Manufacturing requirements
6.4.1 Corrosion protection
37 6.4.2 Material Properties
6.4.2.1 Hardness
6.4.2.2 Impact energy
6.4.3 Residual stress
6.4.3.1 Calculation requirement
6.4.3.2 Residual stress relieving
38 6.4.4 Welding
6.4.5 Defects removal
39 6.4.5.1 Rework without welding
6.4.5.2 Rework with welding
6.4.5.3 Inspections after rework
40 6.4.6 Surface quality visual testing
6.4.7 Non-destructive testing (NDT)
41 6.4.8 Manufacturing tolerances
42 Annex A (informative) Finite element analysis best practices
44 Annex B (informative) Guidance on the necessity of conducting a fatigue assessment
B.1 Introduction
B.2 Suggested characteristic of runners for which a complete fatigue assessment is not required
45 B.3 Suggested requirements and allowable stresses
46 Bibliography
BSI 23/30387011 DC
$13.70