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GB/T 25384-2018Wind turbines -- Full scale structural testing of rotor blade (English PDF)

风力发电机组风轮叶片全尺寸结构试验

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

December 28, 2018

Implementation date

July 1, 2019

Scope

GB/T 25384-2018 is the English-translated version of 风力发电机组风轮叶片全尺寸结构试验.

GB/T 25384-2018 is the Chinese standard "Wind turbines -- Full scale structural testing of rotor blade". Its scope clause reads: This standard specifies the requirements for full-scale structural test of wind turbine blades, and describes and evaluates the test results.

This standard applies to manufacturers and third-party review bodies for blade test integrity assessment. This standard contains the following tests. - Static test; - fatigue test; - Static test after fatigue test; · Tests to determine other characteristics of the blade.

The purpose of the test is to confirm that all blades of a certain type of blade meet the acceptable probability level of the design assumption. This standard assumes that the parameters defined in the test based on the wind turbine standard GB/T 18451.1 or its equivalent are valid.

Design load and blade material data should be considered when calculating and evaluating test loads. The design load and actual load are not evaluated in this standard.

Within the scope. This standard is applicable to the full-scale structural test of horizontal-axis wind turbine blades. The blades are mainly composed of fiber reinforced plastic, wood or epoxy resin. to make.

Most of the principles in this standard can be applied to blades for wind turbines of different configurations and blade tests of different sizes and materials. Its clauses include terms and definitions.

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Document preview — GB/T 25384-2018

National Standard of the People's Republic of China

ICS: 27.180
Classification: F 11
Replacing: GB/T 25384-2010

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 logo
4.1 Symbol
4.2 Greek symbols
4.3 Subscript
4.4 coordinate system
5 Overview
5.1 Test purpose
5.2 Limit state
5.3 Test Limiting Factors
5.4 Test results
6 Test blade documentation and production process documentation
7 Blade test procedure and scheme
7.1 Test area
7.2 Test procedure
7.3 Test plan
7.3.1 General
7.3.2 Blade description
7.3.3 Test load and conditions
7.3.4 Test equipment
7.3.5 Expected test results
8 test load factor
8.1 General
8.2 Local safety factor used in design
8.2.1 Overview
8.2.2 Material local safety factor
8.2.3 Failure consequences Local safety factor
8.2.4 Local safety factor of load
8.3 Test load factor
8.3.1 Differences between blades
8.3.2 Possible errors in the fatigue formula
8.3.3 Environmental conditions
8.4 Determine the load factor used for the target load
9 Test loading and test load evaluation
9.1 General
9.2 Impact of load introduction
9.3 Static test
9.4 Fatigue test
10 Test requirements
10.1 General
10.1.1 Test Record
10.1.2 Instrument Calibration
10.1.3 Measurement uncertainty
10.1.4 Requirements for root fixtures and test benches
10.1.5 Environmental Condition Monitoring
10.1.6 Load Correction
10.2 Static test
10.2.1 General
10.2.2 Static test
10.2.3 Strain measurement
10.2.4 Deformation measurement
10.3 Fatigue test
10.4 Other tests to determine blade characteristics
10.4.1 Blade weight and center of gravity
10.4.2 Natural frequency
10.4.3 Optional blade characteristics test
11 Evaluation of test results
11.1 General
11.2 Catastrophic failure
11.3 Permanent deformation, stiffness attenuation or other changes in blade performance
11.4 Apparent damage
11.5 Failure Assessment
12 Report
12.1 General
12.2 Contents of the test report
12.3 Test evaluation of design requirements
Appendix A (informative) Guidelines for re-implementing the need for static and fatigue testing
Appendix B (informative) Test area
Appendix C (informative) Impact of large deformation and load direction
Appendix D (informative) Calculation of test load
Appendix E (informative) Differences between design load conditions and test load conditions
Appendix F (informative) Determination of the number of fatigue test load cycles

1 Scope

This standard specifies the requirements for full-scale structural test of wind turbine blades, and describes and evaluates the test results.

This standard applies to manufacturers and third-party review bodies for blade test integrity assessment.

This standard contains the following tests.

- Static test;

- fatigue test;

- Static test after fatigue test;

· Tests to determine other characteristics of the blade.

The purpose of the test is to confirm that all blades of a certain type of blade meet the acceptable probability level of the design assumption.

This standard assumes that the parameters defined in the test based on the wind turbine standard GB/T 18451.1 or its equivalent are valid.

Design load and blade material data should be considered when calculating and evaluating test loads. The design load and actual load are not evaluated in this standard.

Within the scope.

This standard is applicable to the full-scale structural test of horizontal-axis wind turbine blades. The blades are mainly composed of fiber reinforced plastic, wood or epoxy resin.

to make. Most of the principles in this standard can be applied to blades for wind turbines of different configurations and blade tests of different sizes and materials.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 2900.53-2001 Electrotechnical terminology wind turbine (IEC 60050-415.1999, IDT)

GB/T 18451.1-2012 Wind turbine design requirements (IEC 61400-1.2005, IDT)

GB/T 27025-2008 General requirements for testing and calibration laboratory capabilities (ISO /IEC 17025.2005, IDT)

ISO 2394.1998 General Principles of Structural Reliability (Generalprinciplesonreliabilityforstructures)

3 Terms and definitions

The following terms and definitions as defined in GB/T 2900.53-2001 apply to this document.

3.1 Loader actuator

A device that can be controlled to apply a constant load or to vary loads and displacements.

3.2 Leaf root bladeroot

The part of the blade that is connected to the hub.

3.3 Blade subsystem

A collection of projects capable of defining targets and functions defined on the blade (eg, lightning protection subsystem, pneumatic brake subsystem, monitor)

GB/T 25388.1 | GB/T 25387.1 | GB/T 25385 | GB/T 25383 | GB/T 25390 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 64 pages — is available in the English PDF.

Referenced standards

Normative references

IEC 60050 · IEC 61400 · IEC 17025.2005 · ISO 2394.1998

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