NON-DESTRUCTIVE INSPECTION METHOD FOR GLASS FIBER COMPOSITE BASED ON THz WAVE

Abstract

Abstract: There has been a series of significant advances and applications in terahertz (THz) technologies, terahertz (THz) wave with its perspectivity and safety was widely applied in the field of nondestructive testing. The unique properties help them become effective tools for non-destructive detection. With the increased utilization, the backward wave oscillator terahertz continuous wave imaging system was used to perform non-destructive testing of glass fiber composite material whose thickness is 5mm. Imaging and data of the sample within heat damage (d_min=0.5mm), air delamination (s_min=0.5mm²) was obtained. The results show that heat damage and delamination of glass fiber reinforced plastic (GFRP) reference sample was detected from the back side. Additionally, glass fiber reinforced plastic (GFRP) samples were evaluated with respect to the measurement of material properties, the attenuation caused by epoxy was proved to be insignificant, and the particular features of the defects in sample are recognized, benefiting to identify the defects.

Key words: terahertz wave, backward wave oscillator, glass fiber composite, non-destructive inspection

CLC Number:

TB332

LIAO Xiao-ling, LIU Yan-lei, WANG Hong, LI Wei-zhong. NON-DESTRUCTIVE INSPECTION METHOD FOR GLASS FIBER COMPOSITE BASED ON THz WAVE[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(9): 35-38.

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