scholarly journals Impact evaluation in carbon fiber reinforced plastic (CFRP) laminates using eddy current pulsed thermography

2014 ◽  
Vol 109 ◽  
pp. 1-7 ◽  
Author(s):  
Yunze He ◽  
Guiyun Tian ◽  
Mengchun Pan ◽  
Dixiang Chen
Keyword(s):  
Carbon Fiber ◽  
Eddy Current ◽  
Impact Evaluation ◽  
Carbon Fiber Reinforced Plastic ◽  
Fiber Reinforced ◽  
Pulsed Thermography ◽  
Cfrp Laminates ◽  
Fiber Reinforced Plastic ◽  
Reinforced Plastic ◽  
Carbon Fiber Reinforced

Effects of Fiber Orientation Direction on Tool-Wear Processes in Down-Milling of Carbon Fiber-Reinforced Plastic Laminates

2015 ◽  
Vol 9 (4) ◽  
pp. 356-364 ◽  
Author(s):  
Satoru Maegawa ◽  
◽  
Yuta Morikawa ◽  
Shinya Hayakawa ◽  
Fumihiro Itoigawa ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Tool Wear ◽  
Fiber Orientation ◽  
Carbon Fiber Reinforced Plastic ◽  
Fiber Reinforced ◽  
Cfrp Laminates ◽  
Fiber Reinforced Plastic ◽  
Orientation Direction ◽  
Reinforced Plastic ◽  
Carbon Fiber Reinforced

This paper discusses tool-wear processes in the milling of carbon fiber-reinforced plastic (CFRP) laminates. Plane down-milling tests with unidirectional and cross-directional CFRP laminates were performed using two types of cutting tools made of tungsten carbide and polycrystalline diamond. Measurements of the changes in the cutting forces and tool-wear widths over the cutting distance revealed that the fiber orientation direction in the CFRP laminates relative to the tool-traveling direction is an important parameter to determine the tool-wear processes. Additionally, based on obtained experimental results, a wear parameter to characterize cutting tool wear is introduced. This parameter can accurately explain the relationship between the worn tool-edge profiles and the processed-surface quality.

Measurement of directionality in carbon fiber reinforced plastic composite with eddy current testing

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1207-1215
Author(s):  
Jun Cheng ◽  
Cheng Yu ◽  
Shuai Xu ◽  
Jinhao Qiu ◽  
Toshiyuki Takagi ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Damage Detection ◽  
Eddy Current ◽  
Carbon Fiber Reinforced Plastic ◽  
Stacking Sequence ◽  
Fiber Reinforced ◽  
Pixel Intensity ◽  
Fiber Reinforced Plastic ◽  
Reinforced Plastic ◽  
Carbon Fiber Reinforced

In carbon fiber reinforced plastic (CFRP) composite, the alignment of continuous carbon fibers guides the directional flow of eddy currents, which is beneficial to the structural and damage detection. In this study, for the purpose of impact damage repair, the transmitter-receiver (T-R) and the flat-tangent eddy current probes are used to determine the fiber orientations and stacking sequence in the CFRP laminate by surface scanning. Theoretical analysis shows that the T-R probe can flexibly pick up the magnetic field generated by the stretched eddy current in CFRP layers. In the meanwhile, the flat-tangent probe possesses layer selective characteristics. By calculating the fiber distribution images of individual directions based on two-dimensional fast Fourier transform (2D-FFT) and comparing the order of pixel intensity values of these images, the fiber orientation and the stacking sequence in the laminate plates can be obtained simultaneously, which provides guidance for damage detection and repair of the CFRP structures.

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