GB/T 45006-2024 Pultruded fiber reinforced polymer composite planks for wind turbine blades
1 Scope
This document specifies the classification, code and designation, raw materials, requirements, test methods, inspection rules, and marking, packaging, transportation and storage of pultruded fiber reinforced polymer composite planks for wind turbine blades (hereinafter referred to as pultruded planks).
This document is applicable to pultruded polymer composite planks with glass fiber, carbon fiber, etc. as reinforced materials used for wind turbine blades.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 1040.4 Plastics - Determination of tensile properties - Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plastic composites
GB/T 1040.5 Plastics - Determination of tensile properties - Part 5: Test conditions for unidirectional fibre-reinforced plastic composites
GB/T 1446 Fiber-reinforced plastics composites - The generals for determination of properties
GB/T 1447 Fiber-reinforced plastics composites - Determination of tensile properties
GB/T 1462 Test methods for water absorption of fiber reinforced plastics
GB/T 1463 Test methods for density and relative density of fiber reinforced plastics
GB/T 2577 Test method for resin content of glass fiber reinforced plastics
GB/T 3820 Determination of thickness of textiles and textile products
GB/T 3855 Test method for resin content of carbon fiber reinforced plastics
GB/T 3917.2 Textiles - Tear properties of fabrics - Part 2: Determination of tear force of trouser-shaped test specimens (Single tear method)
GB/T 3923.1 Textiles - Tensile properties of fabrics - Part 1: Determination of maximum force and elongation at maximum force using the strip method
GB/T 3961 Terms for Fiber Reinforced Plastics
GB/T 4666 Textiles - Fabrics- Determination of width and length
GB/T 4668 Textiles - Woven fabrics - Determination of number of threads per unit length
GB/T 4669 Textiles - Woven fabrics - Determination of mass per unit length and mass per unit area
GB/T 5258 Fiber-reinforced plastic composites - Determination of compressive properties in the in-plane direction
GB/T 6504 Man-made fiber - Test method for oil content
GB/T 7124 Adhesives - Determination of tensile lap-shear strength of rigid-to-rigid bonded assemblies
GB/T 9995 Determination of moisture content and moisture regain of textile - Oven-drying method
GB/T 13657 Bisphenol A epoxy resin
GB/T 18369 Glass fiber roving
GB/T 19466.2 Plastics - Differential scanning calorimetry (DSC) - Part 2: Determination of glass transition temperature
GB/T 19466.3 Plastics - Differential scanning calorimetry (DSC) - Part 3: Determination of temperature and enthalpy of melting and crystallization
GB/T 26752 PAN-based carbon fiber
GB/T 28889 Test method for In-plane shear properties of composite materials
GB/T 28891 Fibre-reinforced plastic composites - Determination of mode I interlaminar fracture toughness GIc for unidirectionally reinforced materials
GB/T 35465.1 Test method for fatigue properties of polymer matrix composite materials - Part 1: General principle
GB/T 35465.3 Test method for fatigue properties of polymer matrix composite materials - Part 3: Tension-tension fatigue
GB/T 35465.4 Test method for fatigue properties of polymer matrix composite materials - Part 4: Tension-compression fatigue and compression-compression fatigue
GB/T 42592 Wind turbine generator systems - Ultrasonic nondestructive testing methods for rotor blades
GB/T 44308 Determination of constituent content and void content of carbon fiber and glass fiber hybrid reinforced plastics
JC/T 773 Fibre-reinforced plastics composites - Determination of apparent interlaminar shear strength by short-beam method
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 3961 and the following apply.
3.1
pultruded fiber reinforced polymer composite plank
plank-shaped composite products made by pultrusion process
3.2
longitudinal direction ( 0° direction)
direction that is the same as the pulling direction of pultrusion molding in pultruded planks, as shown in Figure 1
Key:
1—longitudinal direction (0 ° direction);
2—transverse direction (90 ° direction);
3—thickness direction;
4—pulling direction of pultrusion molding;
5—pultruded planks.
Figure 1 Direction of pultruded planks
3.3
transverse direction (90 ° direction)
in - plane direction that is perpendicular to the pulling direction of pultrusion molding in pultruded planks, as shown in Figure 1
3.4
longitudinal tension modulus of elasticity
Ep
modulus of elasticity along the pulling direction of pultrusion molding in pultruded planks
3.5
tension-tension fatigue
fatigue in which both the maximum stress and the minimum stress are tensile stresses
3.6
tension-compression fatigue
fatigue in which the maximum stress is tension stress and maximum stress is compression stress
3.7
compression-compression fatigue
fatigue in which both the maximum stress and the minimum stress are compression stress
4 Classification, code and designation
4.1 Classification
4.1.1 Classification by reinforced materials:
—pultruded glass fiber planks;
—pultruded carbon fiber planks;
—pultruded glass and carbon fiber planks;
—pultruded planks with other fibers.
4.1.2 Classification by longitudinal tension modulus of elasticity:
—pultruded glass fiber planks of 62 GPa, 64 GPa and 66 GPa grades
—pultruded carbon fiber planks of 130 GPa.140 GPa.150 GPa, 160 GPa grades;
—pultruded glass and carbon fiber planks of 100GPa and 105GPa grades.
Note: The above are the common grades of various types of pultruded planks. For unmentioned grades, refer to the following classification methods: for pultruded glass fiber planks, the grade interval is 2 Gpa, such as 68 GPa and 70 Gpa; for pultruded carbon fiber planks, the grade interval is 10 Gpa, such as 170 GPa and 180 Gpa; for pultruded glass and carbon fiber planks, the grade interval is 5 Gpa, such as 110 GPa and 115 GPa.
4.1.3 It is divided into the following sections by the cross-sectional shape, as shown in Figure 2:
—rectangular section;
—symmetric octagonal section;
—trapezoidal section;
—other sections.
Contents
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification, code and designation
5 Raw materials
6 Requirements
7 Test methods
8 Inspection rules
9 Marking, packaging, transportation and storage
Annex A
(Normative)
Requirements for demolding cloth
Annex B
(Normative)
Methods for selection of k value
Annex C
(Normative)
Calculation method of m value and ultimate strength for 2 million cycles
