Nondestructive evaluation of aircraft composites using reflective terahertz time domain spectroscopy
By Christopher D. Stoik, M. Bohn, James L. Blackshire. 2010
147 citations recorded by the source corpus.
Abstract Terahertz time domain spectroscopy in reflection configuration was assessed as a nondestructive evaluation technique for aircraft glass fiber composites. A technique for measuring the material properties of glass fiber composites using reflection geometry was demonstrated in addition to imaging of damaged glass fiber composites. Surface defects such as localized burn damage, puncture holes, and paint/composite removal were detected using amplitude and phase imaging methods. Hidden voids were also detected using the relative amplitude of the first Fabry–Perot reflection. The depths of discontinuities were then measured using a Fourier technique and then subtracting the incident pulse from the reflected pulse. Finally, nondestructive evaluation techniques for transmission and reflection configurations were compared.
Subfields: Astronomy and Astrophysics, Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/4c5823d38e317d30036121c1593fd037ab11ac69
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Citations in the corpus
- Nondestructive evaluation of forced delamination in glass fiber-reinforced composites by terahertz and ultrasonic waves (2015, unknown): “For glass fiber-reinforced composites, THz waves can penetrate further to detect buried and underlying defects, including voids, delamination, and intrusions [27-31].”
- Non-destructive testing and evaluation of composite materials/structures: A state-of-the-art review (2020, unknown): “Manufacturing induced flaws/defects Surface defects [250] [251] [252] [253] Subsurface defects [254] [255, 256] [250, 257] [141,145, 251] [153,25 8] [259] [260, 261] Delamination [262] [263] [263] [264] [265] [266] Location of depth/size [267] [268] [90] [153] [267] Interface debonding [70] [269] [2”
- A review of non-destructive techniques used for mechanical damage assessment in polymer composites (2018, background): “Multiple possibilities of this technique are already applied over the outer skin of aircrafts [135, 136].”