scholarly journals An Electromagnetic Sensor with a Metamaterial Lens for Nondestructive Evaluation of Composite Materials

Sensors ◽  
2015 ◽  
Vol 15 (7) ◽  
pp. 15903-15920 ◽  
Author(s):  
Adriana Savin ◽  
Rozina Steigmann ◽  
Alina Bruma ◽  
Roman Šturm
Keyword(s):  
Composite Materials ◽  
Nondestructive Evaluation ◽  
Electromagnetic Sensor

Fiber Reinforced Composite Materials

1985 ◽  
Vol 38 (10) ◽  
pp. 1267-1270 ◽  
Author(s):  
R. M. Christensen
Keyword(s):  
Composite Materials ◽  
Nondestructive Evaluation ◽  
Life Prediction ◽  
Nonlinear Behavior ◽  
Interface Conditions ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Damage States ◽  
Failure Life

Fiber-reinforced composite materials offer considerable performance advantages over conventional materials. New fiber developments place a premium upon understanding the mechanical interactions between phases in order to optimize the composition. Of particular importance are the means of quantifying damage states and predicting nonlinear behavior. Special attention is given to such areas as damage/failure/life prediction, environmental effects, nondestructive evaluation, interface conditions, and data base generation.

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.

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