Testing of delamination in multidirectional carbon fiber reinforced polymer laminates using the vertical eddy current method

2019 ◽  
Vol 208 ◽  
pp. 314-321 ◽  
Author(s):  
Zhiwei Zeng ◽  
Qingze Tian ◽  
Handong Wang ◽  
Shaoni Jiao ◽  
Jian Li
Keyword(s):  
Carbon Fiber ◽  
Eddy Current ◽  
Current Method ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Eddy Current Method ◽  
Reinforced Polymer ◽  
Polymer Laminates ◽  
Vertical Eddy

Study of Interaction of Eddy Current Probes and Delamination in Multidirectional CFRP

2019 ◽  
Vol 970 ◽  
pp. 305-313
Author(s):  
Petr N. Shkatov ◽  
Gennady A. Didin ◽  
Dmitry E. Subbotin ◽  
Andrey M. Kokurov
Keyword(s):  
Carbon Fiber ◽  
Eddy Current ◽  
Eddy Currents ◽  
Sample Surface ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Delamination Detection ◽  
Reinforced Polymer ◽  
Vertical Eddy

This paper describes the physics of the interaction of the eddy current probe and the delamination in multidirectional carbon fiber reinforced polymer (CFDR). Currently, there is an opinion that eddy current signals obtained due to delamination in multidirectional CFRP are caused by the redistribution of the vertical eddy current arising from the excitation of eddy currents in the sample by a rectangular coil whose surface is orthogonal to the surface of the sample. The analysis performed by us shows that the possibility of creation and deformation of the vertical eddy current is very questionable, and that the observed eddy current signals associated with the delamination are most likely caused by carbon fiber plies misalignment towards the sample surface. In this paper was compare eddy-current signals from the delamination in CFRP in samples where the existence of vertical eddy current is possible in theory and in samples where this is not possible. The obtained signals had similar measurements, and this indirectly indicates the doubtfulness of the hypothesis of the delamination detection in CFRP samples due to vertical eddy current.

Analysis of process-induced deformation on the spring-in of carbon fiber-reinforced polymer thin laminates

2019 ◽  
Vol 53 (20) ◽  
pp. 2901-2907 ◽  
Author(s):  
Andrea Corrado ◽  
Wilma Polini
Keyword(s):  
Carbon Fiber ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Cure Process ◽  
Reinforced Polymer ◽  
Numerical Tool ◽  
Carbon Fiber Reinforced ◽  
Polymer Laminates ◽  
Flange Angle

The cure process of carbon fiber-reinforced polymer laminates induces residual stress inside the parts that causes geometrical unconformities. The most important unconformity is the spring-in that means the deviation of the flange-to-flange angle from the design angle. The spring-in value depends on some process parameters, such as the lay-up sequence of the plies, as demonstrated in previous works. The aim of this work is to study the dependence of the spring-in on the deviations in the orientation of the plies due to a hand process. A numerical tool was developed and experimentally tested.

scholarly journals Analysis of hole wall defects of drilled carbon fiber reinforced polymer laminates

2014 ◽  
Vol 49 (10) ◽  
pp. 1223-1240 ◽  
Author(s):  
Soraya Catche ◽  
Robert Piquet ◽  
Frédéric Lachaud ◽  
Bruno Castanié ◽  
Audrey Benaben
Keyword(s):  
Carbon Fiber ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Hole Wall ◽  
Carbon Fiber Reinforced ◽  
Polymer Laminates

scholarly journals Joining of carbon fiber reinforced polymer laminates by a novel partial cross-linking process

2015 ◽  
Vol 132 (27) ◽  
pp. n/a-n/a ◽  
Author(s):  
Judith Moosburger-Will ◽  
Markus G. R. Sause ◽  
Robert Horny ◽  
Siegfried Horn ◽  
Jochen Scholler ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Cross Linking ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Carbon Fiber Reinforced ◽  
Polymer Laminates
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