Interpreting the stress ratio effect on delamination growth in composite laminates using the concept of fatigue fracture toughness

2015 ◽  
Vol 78 ◽  
pp. 135-142 ◽  
Author(s):  
Liaojun Yao ◽  
R.C. Alderliesten ◽  
R. Benedictus
Keyword(s):  
Fracture Toughness ◽  
Fatigue Fracture ◽  
Composite Laminates ◽  
Stress Ratio ◽  
Ratio Effect ◽  
Delamination Growth

Nanofillers’ Effects on Fracture Energy in Composite Aerospace Structures

2019 ◽  
Vol 827 ◽  
pp. 43-48
Author(s):  
Andrea Sellitto ◽  
Aniello Riccio ◽  
A. Russo ◽  
Antonio Garofano ◽  
Mauro Zarrelli
Keyword(s):  
Fracture Toughness ◽  
Composite Materials ◽  
Composite Laminates ◽  
Compressive Loading ◽  
Compressive Load ◽  
Numerical Procedure ◽  
Delamination Growth ◽  
Different Types ◽  
Research Programmes ◽  
Consequent Reduction

Composite materials damage behaviour is, nowadays, extensively investigated in the frame of aerospace research programmes. Among the several failure mechanisms which can affect composites, delamination can be considered as the most critical one, especially when combined to compressive loading conditions. In this context, nanofillers can represent an effective way to increase the composites fracture toughness with a consequent reduction of the delamination onset and evolution. Hence, in this paper, the toughening effect of the nanofillers on the delamination growth in composite material panels, subject to compressive load, has been numerically studied. A validated robust numerical procedure for the prediction of the delamination growth in composite materials panel, named SMXB and based on the VCCT-Fail release approach, has been used to perform numerical analyses by considering two different types of nanofillers. Reference material, without nanofillers insertion, has been used as benchmark in order to assess the capability of nanofillers to enhance the fracture toughness in composite laminates.

scholarly journals Mode I fatigue delamination growth with fibre bridging in multidirectional composite laminates

2018 ◽  
Vol 189 ◽  
pp. 221-231 ◽  
Author(s):  
Liaojun Yao ◽  
Yi Sun ◽  
Licheng Guo ◽  
Xiuqi Lyu ◽  
Meiying Zhao ◽  
...  
Keyword(s):  
Composite Laminates ◽  
Mode I ◽  
Delamination Growth ◽  
Fibre Bridging
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