Non-destructive evaluation of fiber-reinforced composites with a fast 2D fiber-optic laser-ultrasound scanner

2015 ◽  
Author(s):  
Ivan Pelivanov ◽  
Takashi Buma ◽  
Jinjun Xia ◽  
Chen-Wei Wei ◽  
Alex Shtokolov ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Fiber Reinforced Composites ◽  
Laser Ultrasound ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Non Destructive Evaluation ◽  
Non Destructive ◽  
Ultrasound Scanner

scholarly journals NDT of fiber-reinforced composites with a new fiber-optic pump–probe laser-ultrasound system

2014 ◽  
Vol 2 (2) ◽  
pp. 63-74 ◽  
Author(s):  
Ivan Pelivanov ◽  
Takashi Buma ◽  
Jinjun Xia ◽  
Chen-Wei Wei ◽  
Matthew O’Donnell
Keyword(s):  
Fiber Optic ◽  
Fiber Reinforced Composites ◽  
Probe Laser ◽  
Laser Ultrasound ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Pump Probe ◽  
Ultrasound System

scholarly journals A Comprehensive Report on Ultrasonic Attenuation of Engineering Materials, Including Metals, Ceramics, Polymers, Fiber-Reinforced Composites, Wood, and Rocks

2020 ◽  
Vol 10 (7) ◽  
pp. 2230 ◽  
Author(s):  
Kanji Ono
Keyword(s):  
Rayleigh Scattering ◽  
Ultrasonic Attenuation ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Test Results ◽  
Fiber Reinforced ◽  
Materials Selection ◽  
Linear Frequency ◽  
Engineering Materials ◽  
Non Destructive

In this paper, ultrasonic attenuation of engineering materials is evaluated comprehensively, covering metals, ceramics, polymers, fiber-reinforced composites, wood, and rocks. After verifying two reliable experimental methods, 336 measurements are conducted and their results are tabulated. Attenuation behavior is determined over broadband spectra, extending up to 15 MHz in low attenuating materials. The attenuation spectra are characterized in combination with four power law terms, with many showing linear frequency dependence, with or without Rayleigh scattering. Dislocation damping effects are re-evaluated and a new mechanism is proposed to explain some of the linear frequency dependencies. Additionally, quadratic and cubic dependencies due to Datta–Kinra scattering and Biwa scattering, respectively, are used for some materials to construct model relations. From many test results, some previously hidden behaviors emerged upon data evaluation. Effects of cold working, tempering, and annealing are complex and sometimes contradictory. Comparison to available literature was attempted for some, but most often prior data were unavailable. This collection of new attenuation data will be of value in materials selection and in designing structural health monitoring and non-destructive inspection protocols.

Defect Types and Ultrasonic Nondestructive Testing for Fiber-Reinforced Composites

2013 ◽  
Vol 834-836 ◽  
pp. 233-236
Author(s):  
Lin Dong Liu ◽  
Xiao Qing Wu
Keyword(s):  
Failure Modes ◽  
Fiber Reinforced Composites ◽  
Fracture Mechanisms ◽  
Reinforced Composites ◽  
Non Destructive Testing ◽  
Fiber Reinforced ◽  
Destructive Testing ◽  
The Common ◽  
Non Destructive ◽  
Ultrasonic Ndt

In this paper, an attempt is made to introduce the defect types relevant to ultrasonic non-destructive testing, and then, we explain how these defects generate in fiber-reinforced composites. The common failure modes which occur are described and discussed. The significance of each of the fracture mechanisms, in terms of their effects on the residual load-bearing properties, is considered. The second part describes briefly the main relevant ultrasonic NDT methods used to identify these defects and indicates the sensitivity to the different types of defect.

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