Details
| Original language | English |
|---|---|
| Article number | 100310 |
| Pages (from-to) | 1-12 |
| Number of pages | 12 |
| Journal | Composites Part C: Open Access |
| Volume | 9 |
| Early online date | 27 Aug 2022 |
| Publication status | Published - Oct 2022 |
Abstract
The fiber volume fraction (FVF) and porosity in fiber reinforced polymers (FRPs) depends strongly on the manufacturing process. These parameters influence the mechanical properties and thus the performance of an FRP. For this research, an epoxy-pre-impregnated glass FRP was investigated to determine the FVF and matrix mass fraction taking into consideration all material constituents, including sizing, stitching thread, as well as the porosity, the area density and the fiber orientations of each lamina, the filament fiber diameter, and the inter-laminar void size and shape. Therefore, samples from a commercially manufactured wind turbine rotor blade were experimentally investigated using scanning electron (SEM) and high-resolution X-ray microscopy (micro-CT), as well as a standardized calcination method and geometric measurements. Post-processing techniques such as thresholding and edge detection were used to analyze the images. There was good FVF agreement between SEM and the method of calcination. Micro-void cross-sectional shapes were well captured by SEM while meso- and macro-voids were volumetrically resolved with a reproducible void size distribution for two sample volumes by micro-CT.
Keywords
- Calcination, Fiber reinforced polymer, Fiber volume fraction, Image processing, Micro-CT, Porosity, Pre-preg, SEM, Void content
ASJC Scopus subject areas
- Materials Science(all)
- Ceramics and Composites
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
Sustainable Development Goals
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In: Composites Part C: Open Access, Vol. 9, 100310, 10.2022, p. 1-12.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Determination of as-built properties of fiber reinforced polymers in a wind turbine blade using scanning electron and high-resolution X-ray microscopy
AU - Rosemeier, Malo
AU - Lester, Catherine
AU - Antoniou, Alexandros
AU - Fahrenson, Christoph
AU - Manousides, Nikolas
AU - Balzani, Claudio
N1 - Funding Information: We thank our colleagues Lisa Schudack, Irene Preuß, Konstantin Kinsvater and Henning Schnellen, who prepared the samples and conducted the experiments, and Basem Rajjoub, who carried out the manual segmentation of the two-dimensional images exported from the micro-CT reconstructions. Moreover, we thank our colleague Florian Sayer, who acquired the funding for this research. Finally, we would like to thank SSP Technology A/S for providing the samples for this research. This work was supported by the German Federal Ministry for Economic Affairs and Climate Action (BMWK) within the ReliaBlade projects [grant numbers 0324335A and 0324335B]. Funding Information: This work was supported by the German Federal Ministry for Economic Affairs and Climate Action (BMWK) within the ReliaBlade projects [grant numbers 0324335A and 0324335B ].
PY - 2022/10
Y1 - 2022/10
N2 - The fiber volume fraction (FVF) and porosity in fiber reinforced polymers (FRPs) depends strongly on the manufacturing process. These parameters influence the mechanical properties and thus the performance of an FRP. For this research, an epoxy-pre-impregnated glass FRP was investigated to determine the FVF and matrix mass fraction taking into consideration all material constituents, including sizing, stitching thread, as well as the porosity, the area density and the fiber orientations of each lamina, the filament fiber diameter, and the inter-laminar void size and shape. Therefore, samples from a commercially manufactured wind turbine rotor blade were experimentally investigated using scanning electron (SEM) and high-resolution X-ray microscopy (micro-CT), as well as a standardized calcination method and geometric measurements. Post-processing techniques such as thresholding and edge detection were used to analyze the images. There was good FVF agreement between SEM and the method of calcination. Micro-void cross-sectional shapes were well captured by SEM while meso- and macro-voids were volumetrically resolved with a reproducible void size distribution for two sample volumes by micro-CT.
AB - The fiber volume fraction (FVF) and porosity in fiber reinforced polymers (FRPs) depends strongly on the manufacturing process. These parameters influence the mechanical properties and thus the performance of an FRP. For this research, an epoxy-pre-impregnated glass FRP was investigated to determine the FVF and matrix mass fraction taking into consideration all material constituents, including sizing, stitching thread, as well as the porosity, the area density and the fiber orientations of each lamina, the filament fiber diameter, and the inter-laminar void size and shape. Therefore, samples from a commercially manufactured wind turbine rotor blade were experimentally investigated using scanning electron (SEM) and high-resolution X-ray microscopy (micro-CT), as well as a standardized calcination method and geometric measurements. Post-processing techniques such as thresholding and edge detection were used to analyze the images. There was good FVF agreement between SEM and the method of calcination. Micro-void cross-sectional shapes were well captured by SEM while meso- and macro-voids were volumetrically resolved with a reproducible void size distribution for two sample volumes by micro-CT.
KW - Calcination
KW - Fiber reinforced polymer
KW - Fiber volume fraction
KW - Image processing
KW - Micro-CT
KW - Porosity
KW - Pre-preg
KW - SEM
KW - Void content
UR - http://www.scopus.com/inward/record.url?scp=85138052039&partnerID=8YFLogxK
U2 - 10.1016/j.jcomc.2022.100310
DO - 10.1016/j.jcomc.2022.100310
M3 - Article
AN - SCOPUS:85138052039
VL - 9
SP - 1
EP - 12
JO - Composites Part C: Open Access
JF - Composites Part C: Open Access
SN - 2666-6820
M1 - 100310
ER -