scholarly journals Mode I intralaminar fracture toughness of 2D woven carbon fibre reinforced composites: A comparison of stable and unstable crack propagation techniques

2019 ◽  
Vol 214 ◽  
pp. 427-448 ◽  
Author(s):  
D. Dalli ◽  
G. Catalanotti ◽  
L.F. Varandas ◽  
B.G. Falzon ◽  
S. Foster
Keyword(s):  
Fracture Toughness ◽  
Crack Propagation ◽  
Carbon Fibre ◽  
Mode I ◽  
Reinforced Composites ◽  
Unstable Crack ◽  
Fibre Reinforced Composites

scholarly journals Numerical study of mode I fracture toughness of carbon-fibre-reinforced plastic under an impact load

2019 ◽  
Vol 234 (1) ◽  
pp. 12-20
Author(s):  
JJM Machado ◽  
PDP Nunes ◽  
EAS Marques ◽  
RDSG Campilho ◽  
Lucas FM da Silva
Keyword(s):  
Fracture Toughness ◽  
Crack Propagation ◽  
Carbon Fibre ◽  
Strain Rate ◽  
Cohesive Zone ◽  
Impact Load ◽  
Mode I ◽  
Cohesive Zone Modelling ◽  
Reinforced Plastic ◽  
Carbon Fibre Reinforced Plastic

The main objective of this work is, by using cohesive zone modelling, to compute the fracture toughness behaviour in mode I of unidirectional carbon-fibre-reinforced plastic subjected to an impact load at 4.7 m/s. To perform this task, double-cantilever beam specimens were simulated, with its opening displacement and crack propagation being assessed, as well as the evolution of strain rate through the test. Therefore, by plotting the crack propagation, it was possible to calculate the fracture toughness in mode I ( GIC). A comparison of the numerical results with experimental tests previously performed by using a drop weight falling-wedge impact test equipment was made, allowing to infer that the numerical approach, based on a triangular cohesive zone modelling, is capable to predict the behaviour of such specimens under impact, accurately obtain GIC, and to determine the value of strain rate achieved through the test.

Influence of cutting speed and tool geometry on form and machine tapping of carbon fibre-reinforced composites

2021 ◽  
Vol 43 (2) ◽  
Author(s):  
Sérgio Luiz Moni Ribeiro Filho ◽  
Túlio Hallak Panzera ◽  
Lincoln Cardoso Brandão ◽  
Alexandre Mendes Abrão
Keyword(s):  
Carbon Fibre ◽  
Cutting Speed ◽  
Tool Geometry ◽  
Reinforced Composites ◽  
Fibre Reinforced Composites
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