Damage and failure in low energy impact of fiber-reinforced polymeric composite laminates

2012 ◽  
Vol 94 (2) ◽  
pp. 540-547 ◽  
Author(s):  
R.C. Batra ◽  
G. Gopinath ◽  
J.Q. Zheng
Keyword(s):  
Composite Laminates ◽  
Polymeric Composite ◽  
Low Energy ◽  
Fiber Reinforced ◽  
Damage And Failure ◽  
Energy Impact

Damage detection of unidirectional carbon fiber–reinforced laminates with embedded magnetostrictive particulates: A preliminary study

2012 ◽  
Vol 24 (8) ◽  
pp. 991-1006 ◽  
Author(s):  
Oliver J Myers ◽  
George Currie ◽  
Jonathan Rudd ◽  
Dustin Spayde ◽  
Nydeia Wright Bolden
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Nondestructive Evaluation ◽  
Composite Laminates ◽  
Composite Structures ◽  
Single Layer ◽  
Polymeric Composite ◽  
Analytical Models ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced

Defects in composite laminates are difficult to detect because of the conductive and paramagnetic properties of composite materials. Timely detection of defects in composite laminates can improve reliability. This research illustrates the preliminary analysis and detection of delaminations in carbon fiber laminate beams using a single layer of magnetostrictive particles and noncontacting concentric magnetic excitation and sensing coils. The baseline analytical models also begin to address the intrusive nature of the magnetostrictive particles as well as relate the applied excitation field with the stress and magnetic flux densities induced in the magnetostrictive layer. Numerical methods are used to begin to characterize the presence of magnetostrictive particles in the laminate and the behavior of the magnetostrictive particles in relationship to the magnetic field used during sensing. Unidirectional laminates with embedded delaminations are used for simulations and experimentations. A novel, yet simplified fabrication method is discussed to ensure consistent scanning and sensing capabilities. The nondestructive evaluation scanning experiments were conducted with various shapes and sizes of damages introduced into carbon fiber–reinforced polymeric composite structures. The results demonstrate high potential for magnetostrictive particles as a low-cost, noncontacting, and reliable sensor for nondestructive evaluation of composite materials.

Study on the delamination behavior of thick composite laminates under low-energy impact

2018 ◽  
Vol 184 ◽  
pp. 461-473 ◽  
Author(s):  
He Ran Wang ◽  
Shu Chang Long ◽  
Xiao Qing Zhang ◽  
Xiao Hu Yao
Keyword(s):  
Composite Laminates ◽  
Low Energy ◽  
Energy Impact ◽  
Delamination Behavior

Progressive Damage and Failure Modeling in Fiber-Reinforced Laminated Composites Containing a Hole

2011 ◽  
Vol 21 (6) ◽  
pp. 893-911 ◽  
Author(s):  
B. M. Zhang ◽  
L. Zhao
Keyword(s):  
Material Properties ◽  
Composite Laminates ◽  
Laminated Composites ◽  
Matrix Material ◽  
Micromechanical Model ◽  
Failure Criteria ◽  
Experimental Results ◽  
Progressive Damage ◽  
Fiber Reinforced ◽  
Damage And Failure

A progressive damage and failure model for fiber-reinforced laminated composites is developed in combination of finite element procedure and micromechanical model based on a unit cell. The micromechanical model can be used to evaluate failure criteria at the micro-level with fiber and matrix material properties rather than laminate material parameters. Once either of the constituents has damaged, the corresponding material properties are degraded by the damage factor. The micromechanical model and the damage theory are implemented in the finite software to model the damage progression and compute the ultimate strength of the composite laminates containing a hole. The simulation results of this model are compared with a model that is used in the failure criteria at the macro-level. The predicted strengths for both models are furthermore compared with the experimental results, and a well agreement in the simulation and experimental results is revealed.

scholarly journals Influence of seawater immersion in low energy impact behavior of a novel colombian fique fiber reinforced bio-resin laminate

DYNA ◽  
2015 ◽  
Vol 82 (194) ◽  
pp. 170-177
Author(s):  
Fabuer Ramón Valencia ◽  
Alberto Lopez-Arraiza ◽  
Joseba I. Múgica ◽  
Jon Aurrekoetxea ◽  
Juan Carlos Suarez ◽  
...  
Keyword(s):  
Low Energy ◽  
Impact Behavior ◽  
Test Results ◽  
Fiber Reinforced ◽  
Stress Tests ◽  
Elongation At Break ◽  
Energy Impact ◽  
Energy Profiles ◽  
Energy Behavior ◽  
Damage Extent

This experimental work is aimed at the influence of seawater immersion in low impact energy behavior of a novel Colombian fique fiber reinforced bio-resin laminate. Such material was manufactured by vacuum infusion. The specimens were immersed in seawater during a bioactivity period of six months. Low energy impact tests were performed in order to obtain the penetration and perforation threshold according to energy profiles. The damage extent was characterized by means of Ultrasonics. Tensile stress tests were also performed and the breaking surfaces were analyzed by Scanning Electron Microscopy. The results revealed that the new biocomposite, after seawater immersion, has higher penetration and perforation thresholds than the biocomposite without immersion. Tensile test results show stiffness lost and increase of elongation at break. This behavior of the immersed biocomposite is due to a plasticization process of the material.

Status Quo of Research on Impact Damage of Composites in Aircraft

2016 ◽  
Vol 719 ◽  
pp. 33-40
Author(s):  
Wen Jun Chen ◽  
Jing Song Chen ◽  
Wen Bo Cheng ◽  
Lu Chun Zhao
Keyword(s):  
Composite Material ◽  
Composite Laminates ◽  
Impact Test ◽  
Impact Damage ◽  
Status Quo ◽  
Low Energy ◽  
Energy Impact ◽  
Aircraft Composites ◽  
Metal Materials ◽  
The Impact

The application of composites in aircraft was introduced. And compare composites with metal materials. The conclusions referring to the impact test on composite laminates and impact damage characteristics of composite laminates, were summarized by referring to a large number of literature. This investigation shows: composite material is more suitable for the preparation of the overall structure; the research of impact damage test on composites mainly concentrated in the layer order; layer direction and low-energy impact test; and there are clear division and judgment method of four kinds of damage body by studying characteristics of impact damage.Keyword: aircraft; composites; impact damage

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