Terahertz Ray Nondestructive Characterizations in FRP Composites

Je Woong Park; Kwang Hee Im; David K. Hsu; Chien Ping Chiou; Daniel J. Barnard

doi:10.4028/www.scientific.net/AMR.123-125.839

Paper Titles

Application of the Ultrasound-Infrared Thermography Technique for Non-Destructive Evaluation of Defects in Shoe Bonding Parts
p.823

Internal Defect Inspection of Composite Material Using Non-Contact UT
p.827

Measurement of Bridge Fundamental Frequency by Resistance Strain Gauges
p.831

Nondestructive Evaluation of Braided Carbon Fiber Composites Using High Tc SQUID
p.835

Terahertz Ray Nondestructive Characterizations in FRP Composites
p.839

Thermal Insulation Test of RCCW with Inner Insulating Layer
p.843

Ultrasonic Propagation Imaging for Wind Turbine Blade Quality Evaluation
p.847

Aggregation, Isomerization and Thermo-Optic Property of Azobenzene Polyelectrolyte
p.851

All-Fiber Optic Chemical Sensors for Public Safety Monitoring
p.855

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 123-125Terahertz Ray Nondestructive Characterizations in...

Terahertz Ray Nondestructive Characterizations in FRP Composites

Abstract:

Recently, terahertz ray imaging has emerged as one of the most promising new powerful nondestructive evaluation (NDE) techniques, and new application systems are under processing development for the area applications. In this study, a new time-domain spectroscopy system was utilized for detecting and evaluating layup effect and flaw in FRP composite laminates. Extensive experimental measurements in reflection mode were made to map out the T-ray images. Especially in this characterization procedure, we estimated the electromagnetic properties such as the refractive index. Estimates of properties are in good agreement with known data. Furthermore layup effect and flaw of FRP composite laminates were observed in reflection mode and limitations will be discussed in the T-ray processing.