GB/T 3354-1999 Test method for tensile properties of oriented fiber reinforced plastics

This standard specifies the method for tensile properties of oriented fiber reinforced plastics. This standard is applicable to the determination of tensile properties of fiber reinforced plastics at 0°, 90°, 0°/90° and balanced symmetrical laminates. GB/T 3354-1999 Test method for tensile properties of oriented fiber reinforced plastics GB/T3354-1999 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
GB/T3354-1999
Test Method for Tensile Properties of Oriented Fiber Reinforced Plastics Implementation
19990801
National Bureau of Standards
Page 1
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"Test Method for Tensile Properties of Oriented Fiber Reinforced Plastics" Data No.:
3354-1999
1 Specimen,
2 Test Conditions
3 Test Steps.| |tt||4 Calculation
5 Test results
6 Test report
Additional notes:
Test method for tensile properties of unidirectional fiber reinforced plastics"《Standard
354-1999
Page 2
This standard is applicable to the determination of tensile strength, tensile elastic modulus, Poisson's ratio, elongation at break and stress-strain curve of unidirectional and orthogonally symmetrically laminated fiber reinforced plastic flat plates parallel to the fiber direction (O[0]) and perpendicular to the fiber direction (90[0]).
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Material tensile test
Wei Zengma
54-1999
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1 Test specimen
1.1 Test specimen geometry and dimensions are shown in the following figure and table. Test specimen dimensions
Dimensions, mm
Test specimen type
0[0]/90[0]230
12.5±0.5
Note: ①The thickness of the arbitration specimen is 2.00.1mm1
≥15[0]
≥15[0]
≥15[0]
②When determining Poisson's ratio, a specimen without a reinforcing sheet may also be used. ③When determining 0[0] Poisson's ratio, the specimen width may also be 25±0.5mm. 1.2 Reinforcement sheet and its bonding method:
1.2.1 The reinforcement sheet can be made of glass fiber reinforced plastic plate with a thickness of 2 to 3 mm orthogonal ply or aluminum plate with a thickness of 1 to 3 mm.
1.2.2 The adhesive used for bonding the reinforcement sheet should ensure that the reinforcement sheet does not fall off during the test, and the curing temperature of the adhesive should not be higher than the molding temperature of the sample sheet.
1.2.3 When treating the surface of the sample where the reinforcement sheet is bonded, it is not allowed to damage the sample fiber. 1.2.4 The reinforcement sheet can be bonded after the sample is prepared, or it can be bonded as a whole piece before the sample is prepared, and then processed into a sample. The reinforcement sheets on both sides should be symmetrical.
1.3 The number of samples in each group should be no less than 5. Page 4
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Fiber reinforced plastic tensile properties test method" Material Code
3354-1999
2 Test conditions
2.1 Sample state adjustment and test standard environment shall be in accordance with GB1446 "Fiber reinforced plastic performance test method general rules" 2.2 Test equipment shall be in accordance with GB1446
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2.3 Loading speed:
2.3.1 When measuring tensile strength, the loading speed is 1~6mm/min, and the loading speed is 2mm/min during arbitration test. 2.3.2 When measuring tensile elastic modulus, Poisson's ratio, elongation at break and stress-strain curve, the loading speed is 1~6mm/min.
Material tensile
Test square
Wei Zengma
354-1999
Page 5
3 Test steps
3.1 Prepare the specimen according to GB1446 and 1.2 of this standard. 3.2 Check the appearance of the specimen according to GB1446
3.3 Adjust the state of the specimen according to GB1446. 3.4 Number and mark the specimen, and measure the thickness and width of any three points in the working section and take the arithmetic mean. The measurement accuracy shall be in accordance with GB1446.
3.5 Clamp the specimen so that the axis of the specimen is consistent with the center line of the upper and lower chucks. 3.6 Install the instrument for measuring deformation or strain in the working section. Apply the initial load (about 5% of the failure load), check and adjust the specimen and the deformation or strain measurement system to make it in normal working condition. 3.7 When measuring the tensile elastic modulus, Poisson's ratio, elongation at break and stress-strain curve, use graded loading with a grade difference of 5-10% of the breaking load (at least five grades when measuring the tensile elastic modulus and Poisson's ratio), and record each grade of load and the corresponding deformation or strain value. Continuous loading can be performed when using an automatic recording device. 3.8 When measuring tensile strength, load continuously until the specimen is broken, and record the maximum load value and the form of specimen failure. 3.9 Draw a load-deformation or load-strain curve. 3.10 Any specimen whose failure occurs only in the clamping section should be discarded. When there are less than 5 valid specimens in the same batch, the test should be repeated. Page 6
Test method for tensile properties of materials
54-1999
4.1 Tensile strength is calculated according to formula (1):
Where: ot-
4Calculation
Tensile strength, kgf/cm[2] (MPa); Note: 1MPa=1N/mm[2]~10.2kgf/cm[2]Pb-
a Maximum load value when the specimen is destroyed, kgf(N); b Width of specimen, cm(mm); h——Thickness of specimen, cm(mm).
4.2 The tensile elastic modulus is calculated according to formula (2): Ap·1
b·h·△l
Tensile elastic modulus, kgf/cm[2] (MPa); where: Et
Load increment of the initial straight line segment on the load-deformation curve or load-strain curve, kgf (N); Ap
Measurement gauge length, cm (mm);
Strain increment corresponding to △P.
4.3 The tensile elongation at failure is calculated according to formula (3): Alp
Where:
-tensile elongation at failure;
-total elongation of gauge length 1 when the specimen fails, cm. Alb-
4.4Draw the stress-strain curve. Www.bzxZ.net
4.5 Poisson's ratio is calculated according to formula (4):
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Test Method for Tensile Properties of Fiber-Reinforced Plastics》Material Code
354-1999
Wherein: LT——Poisson's ratio;
L, T——respectively the longitudinal (L-direction) strain and transverse (T-direction) strain corresponding to △P; 1L, 1T——respectively the longitudinal and transverse measurement gauge lengths, cm (mm); AIL, AIT
——respectively the deformation increments of gauge lengths 1L and 1T corresponding to △P, cm (mm). ·(5)
· (6)
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Test method for tensile properties of fiber reinforced plastics》Material Code +
354-1999
5Test results
Test results are in accordance with GB1446
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Fiber reinforced plastics
Material tensile
Test method
Strong plastic
3354-1999
Page 9|| tt||Test report
Test report is in accordance with GB1446.
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Material tensile properties
Directional fiber
Dimensional reinforcement
Test method
Strong plastic rice
3354-1999
Page 10
Additional remarks:
This standard is proposed by the State Building Materials Industry Bureau and the Ministry of Aviation Industry of the People's Republic of China, and is under the jurisdiction of the Fiber Reinforced Plastics Branch of the National Plastics Standardization Technical Committee. www
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This standard was jointly drafted by the Harbin Glass Fiber Reinforced Plastics Research Institute of the State Building Materials Industry Bureau, the Aviation Materials Research Institute and the Beijing Institute of Aeronautics.
The main drafters of this standard are Tao Yunbao, Zhang Genrong, Sun Yijuan, Jiang Zuoyi and Yang Naibin. From the date of implementation of this standard, the original building materials industry department standard JC290-81 will be invalidated. Test method for tensile properties of strong plastic rice materials 3354-1999 Page 11
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