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Comparison of the Bending Resistance Properties of Carbon Fiber/Foam Sandwich Structural Composites with Different Laying Angles

Lvtao Zhu

Lvtao Zhu

  • College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech UniversityP.R. China
  • Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang ProvinceP.R. China
  • Shaoxing Baojing Composite Materials CO., LTDShaoxing, P.R. China
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Zhu, Lvtao
, 
Shengbin Cao

Shengbin Cao

School of Materials Science, Shanghai Dianji UniversityP.R. China
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Cao, Shengbin
, 
Xiaofeng Zhang

Xiaofeng Zhang

School of Materials Science, Shanghai Dianji UniversityP.R. China
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Zhang, Xiaofeng
, 
Wei Shen

Wei Shen

Shaoxing Baojing Composite Materials CO., LTDShaoxing, P.R. China
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Shen, Wei
 und 
Chengyan Zhu

Chengyan Zhu

College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech UniversityP.R. China
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Zhu, Chengyan
  
08. Juni 2022
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Artikel-Kategorie: Research Article
Online veröffentlicht: 08. Juni 2022
Seitenbereich: 75 - 81
DOI: https://doi.org/10.2478/ftee-2022-0010
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© 2022 Lvtao Zhu et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1

Schematic diagram of sandwich structure
Schematic diagram of sandwich structure

Fig. 2

(a) Carbon fiber unidirectional prepreg, and (b) PMI foam board
(a) Carbon fiber unidirectional prepreg, and (b) PMI foam board

Fig. 3

Heating and curing process
Heating and curing process

Fig. 4

Carbon fiber/PMI foam sandwich structural composite(a) top view, (b) side view and (c) size (mm)
Carbon fiber/PMI foam sandwich structural composite(a) top view, (b) side view and (c) size (mm)

Fig. 5

Three-point bending testing setup: (a) schematic diagram and (b) experimental photo
Three-point bending testing setup: (a) schematic diagram and (b) experimental photo

Fig. 6

The bending process of the composite Group A
The bending process of the composite Group A

Fig. 7

Displacement-load curves
Displacement-load curves

Fig. 8

Bending process of the composite group B
Bending process of the composite group B

Fig. 9

Bending process of the composite group C
Bending process of the composite group C

Fig. 10

Bending process of the composite group D
Bending process of the composite group D

Laying methods for the specimens tested

Specimen Laying angle
A [0°]8
B [0°/45°/90°/−45°]s
C [0°/90°]4
D [45°/−45°]4

Obtained results of sandwich structural composites tested

Group Laying angle Failure load (N) Bending strength (MPa)
A [0°]8 762.67 64.63
B [0°/45°/90°/−45°]s 454.23 38.49
C [0°/90°]4 355.80 30.15
D [45°/−45°]4 92.47 7.84

Specifications of the carbon fiber unidirectional prepreg

Carbon yarn weight (g/m2) Resin content (g/m2) Resin weight (g/m2) Gross weight (g/m2) Thickness (mm)
150 32 71 221 0.150

Mechanical parameters of the PMI foam board

Density (kg/m3) Elastic modulus (MPa) Poisson’s ratio Shear modulus (MPa) Tensile strength (MPa) Compressive strength (MPa) Shear strength (MPa) Elongation at break (%)
75 92 0.3 29 2.8 1.5 1.3 3.0
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