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IEC TS 61400-23:2001
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Wind turbine generator systems - Part 23: Full-scale structural testing of rotor blades
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
08-04-2014
English
26-04-2001
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 Notation
4.1 Symbols
4.2 Greek symbols
4.3 Subscripts
4.4 Abbreviations
5 General principles
5.1 Purpose of tests
5.2 Limit states
5.3 Practical constraints
5.4 Results of test
6 Blade data
6.1 General
6.2 External dimensions and interfaces
6.3 Blade characteristics
6.4 Material data
6.5 Design loads and conditions
6.6 Areas to be tested
6.7 Special blade modifications
6.8 Root fixing
6.9 Mechanisms
7 Differences between design and test load conditions
7.1 General
7.2 Load introduction
7.3 Bending moments and shear
7.4 Flatwise and edgewise combinations
7.5 Radial loads
7.6 Torsion loads
7.7 Mechanisms
7.8 Environmental conditions
7.9 Load spectrum and sequence
8 Test loading
8.1 General
8.2 Load-based testing
8.3 Strength-based testing
8.4 Static-test load aspects
8.5 Fatigue-test load aspects
8.6 Sequence of static and fatigue tests
8.7 Mechanisms
9 Load factors for testing
9.1 General
9.2 Partial safety factors used in the design
9.3 Test load factors
9.4 Application of load factors to obtain the target
load
10 Evaluation of test load distribution in relation to
design requirements
10.1 General
10.2 Influence of load introduction
10.3 Static tests
10.4 Fatigue tests
11 Failure modes
11.1 General
11.2 Catastrophic failure
11.3 Functional failure
11.4 Superficial failure
12 Test procedures and methods
12.1 General
12.2 Test stand and root fixture requirements
12.3 Load introduction fixtures
12.4 Static strength test
12.5 Fatigue testing
12.6 Advantages and disadvantages of test alternatives
12.7 Deterministic corrections
12.8 Data collection
13 Other tests determining blade properties
13.1 General
13.2 Test stand deflections
13.3 Deflection
13.4 Stiffness distribution
13.5 Strain distribution measurements
13.6 Natural frequencies
13.7 Damping
13.8 Mode shapes
13.9 Mass distribution
13.10 Creep
13.11 Other non-destructive testing
13.12 Blade sectioning
14 Reporting
14.1 General
14.2 Content
Annex A (normative) Partial safety factors considerations
Annex B (normative) Sensitivity of the evaluation to
fatigue formulation
Annex C (normative) Loading angle change considerations
Annex D (informative) Examples of test set-ups
Bibliography
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