Terahertz frequency modulated continuous wave imaging for non-destructive evaluation of painting and multilayer parts

2018 ◽  
Author(s):  
Jean-Paul Guillet ◽  
Xue Ma ◽  
Kejia Wang ◽  
Frédéric Fauquet ◽  
Patrick Mounaix ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Terahertz Frequency ◽  
Non Destructive Evaluation ◽  
Wave Imaging ◽  
Non Destructive

NON-DESTRUCTIVE EVALUATION OF CONCRETE STRUCTURES BY NON-STATIONARY THERMAL WAVE IMAGING

2012 ◽  
Vol 32 ◽  
pp. 39-48 ◽  
Author(s):  
Ravibabu Mulaveesala ◽  
Soma Sekhara Balaji Panda ◽  
Rupla Naik Mude ◽  
Muniyappa Amarnath
Keyword(s):  
Thermal Wave ◽  
Concrete Structures ◽  
Non Destructive Evaluation ◽  
Wave Imaging ◽  
Non Destructive ◽  
Thermal Wave Imaging

Influence of electric field direction of terahertz radiation on composite materials

2016 ◽  
Vol 54 (12) ◽  
pp. 1603-1612
Author(s):  
Kwang-Hee Im ◽  
Je-Woong Park ◽  
In-Young Yang ◽  
David Kuei Hsu
Keyword(s):  
Composite Materials ◽  
Electric Field ◽  
Time Domain ◽  
Continuous Wave ◽  
Carbon Fiber Composites ◽  
Terahertz Waves ◽  
Time Domain Spectroscopy ◽  
Non Destructive Evaluation ◽  
Electric Field Direction ◽  
Non Destructive

Terahertz waves (T-ray) for the non-destructive evaluation were investigated on composite materials. The modalities of the T-ray radiation used were time domain spectroscopy and continuous wave for composites. The composite materials are composed of non-conducting polymeric composites and carbon fiber composites. T-ray signals in the time domain spectroscopy mode resembles that of ultrasound; however, unlike ultrasound, T-ray pulse can detect a crack hidden behind a larger crack (shadow effect). Thick glass fiber reinforced polymer laminates containing double-saw slots was demonstrated. Also, in carbon composites the penetration of T-ray waves was investigated in order to detect flaws is strongly affected by the angle between the electric field vector of the terahertz waves and the intervening fiber directions. Other composites tested in this study include both solid laminates and honeycomb sandwiches. The defects and anomalies investigated by T-ray were foreign material inclusions, simulated disbond and delamination, mechanical impact damage, heat damage, and water or hydraulic fluid ingression. The intensive characterization of T-ray for the non-destructive evaluation of composites are being discussed.

scholarly journals Terahertz frequency modulated continuous wave imaging advanced data processing for art painting analysis

2018 ◽  
Vol 26 (5) ◽  
pp. 5358 ◽  
Author(s):  
Corinna L. Koch Dandolo ◽  
Jean-Paul Guillet ◽  
Xue Ma ◽  
Frédéric Fauquet ◽  
Marie Roux ◽  
...  
Keyword(s):  
Data Processing ◽  
Continuous Wave ◽  
Terahertz Frequency ◽  
Painting Analysis ◽  
Wave Imaging
Sign in / Sign up

Export Citation Format

Share Document