scholarly journals Damage mode identification of Carbon fiber/Epoxy composites under fatigue process using acoustic emission monitoring

2021 ◽  
Vol 2125 (1) ◽  
pp. 012036
Author(s):  
Yi-Er Guo ◽  
De-Guang Shang ◽  
Lin-Xuan Zuo ◽  
Lin-Feng Qu ◽  
Di Cai ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Carbon Fiber ◽  
Shear Failure ◽  
Fatigue Behavior ◽  
Damage Mechanism ◽  
Matrix Cracking ◽  
Epoxy Composites ◽  
Interface Debonding ◽  
Accumulated Damage ◽  
Carbon Fiber Epoxy

Abstract In this paper, the static and fatigue behavior of carbon fiber/Epoxy composites laminate are investigated. The degradation and damage evolution in the composite laminate tests process were monitored using the acoustic emission technique. The acoustic signals collected during the tests were analyzed. The results of the acoustic emission signal accumulated during static and fatigue tests are compared in order to identify the accumulated damage mechanism of carbon fiber/Epoxy composites laminate. The accumulated damage is manifested by matrix cracking, fiber/matrix interface debonding, shear failure, delamination, and fiber break.

Interfacial properties and fatigue behavior of carbon fiber epoxy laminate composites

2013 ◽  
Vol 33 (2) ◽  
pp. 173-179 ◽  
Author(s):  
Hsien-Tang Chiu ◽  
Yung-Lung Liu ◽  
Kuo-Chuan Liang ◽  
Peir-An Tsai
Keyword(s):  
Fatigue Life ◽  
Carbon Fiber ◽  
Fatigue Fracture ◽  
Stress Level ◽  
Fatigue Behavior ◽  
Cyclic Stress ◽  
Matrix Cracking ◽  
Stacking Sequence ◽  
Carbon Fiber Laminate ◽  
Carbon Fiber Epoxy

Abstract The study elucidated the relationship between the stacking sequence and physical properties, by investigating mechanical properties, fatigue life and the morphology, after fatigue fracture of carbon fiber/epoxy composites. The results show that the unidirectional carbon fiber laminate has the maximum tensile stress. Moreover, the laminate with ±45° plies can improve the tensile strain. The fatigue life of all specimens was shorter than 103 cycles under high cyclic stress level, and longer than 106 cycles under low cyclic stress level. Laminates with [908]s stacking sequence had the shortest fatigue life under high and low cyclic stress, while the unidirectional carbon fiber laminate had the highest fatigue life. A number of fatigue damage models, including delaminating, matrix cracking and fiber failure, have been identified by scanning electron microscopy (SEM). The SEM micrographs showed that the morphology on the cross section, after fatigue fracture, was significantly correlated to the stacking sequence.

scholarly journals Cluster analysis of acoustic emission signals for 2D and 3D woven carbon fiber/epoxy composites

2015 ◽  
Vol 50 (14) ◽  
pp. 1921-1935 ◽  
Author(s):  
Li Li ◽  
Yentl Swolfs ◽  
Ilya Straumit ◽  
Xiong Yan ◽  
Stepan V Lomov
Keyword(s):  
Cluster Analysis ◽  
Acoustic Emission ◽  
Carbon Fiber ◽  
Epoxy Composites ◽  
2D And 3D ◽  
Carbon Fiber Epoxy

USE OF MODAL ACOUSTIC EMISSION TO MONITOR DAMAGE PROGRESSION IN CARBON FIBER∕EPOXY COMPOSITES

2011 ◽  
Author(s):  
J. M. Waller ◽  
C. T. Nichols ◽  
D. J. Wentzel ◽  
R. L. Saulsberry ◽  
Donald O. Thompson ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Carbon Fiber ◽  
Epoxy Composites ◽  
Damage Progression ◽  
Carbon Fiber Epoxy

Fatigue of Nanotube-Reinforced Carbon Fiber Epoxy Composites

2012 ◽  
Vol 510 ◽  
pp. 753-756 ◽  
Author(s):  
Ying Cao ◽  
Li Pan
Keyword(s):  
Carbon Fiber ◽  
Epoxy Composite ◽  
Resin Transfer Molding ◽  
Damage Mechanism ◽  
Epoxy Composites ◽  
Fiber Direction ◽  
High Quality ◽  
X Ray ◽  
Transfer Molding ◽  
Carbon Fiber Epoxy

In the present investigation, resin transfer molding has been used to produce high quality carbon fiber epoxy composites and nanotube-reinforced carbon fiber epoxy composites. To study the influence of carbon nanotubes (CNTs) on improving the mechanical properties and fatigue life, the tension-tension fatigue test has been carried out on those two kinds of material in the fiber direction. The damage mechanism in the fiber directions was analyzed by X-ray radiography and electron microscopy. The results show that CNTs pulled out, rapture and bridged cracks during the test, the results also show that CNTs possess an obvious potential on improving the property of carbon fiber epoxy composite, especially for properties that dominated by matrix.

Evaluation of fatigue behavior on repaired carbon fiber/epoxy composites

2008 ◽  
Vol 43 (9) ◽  
pp. 3166-3172 ◽  
Author(s):  
Edson C. Botelho ◽  
Mirabel C. Rezende ◽  
Sérgio Mayer ◽  
Herman Voorwald
Keyword(s):  
Carbon Fiber ◽  
Fatigue Behavior ◽  
Epoxy Composites ◽  
Carbon Fiber Epoxy
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