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THz spectroscopy application for analyzes of internal structure damage due to moisture influence
Author(s): Magdalena Mieloszyk; Katarzyna Majewska; Wieslaw Ostachowicz
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Paper Abstract

Glass composite structures are recently very popular in many branches of industry, such as marine (e.g. ship hull), civil engineering (e.g. composite bridge deck) or energy (e.g. wind turbine blades). Due to high safety requirements related to the objects structural health monitoring systems based on fiber optics techniques are recently widely applied. One of problems that can influence on material durability is moisture introduced into element structure during its manufacturing or exploitation processes. Moisture changes material characteristics, affect element durability and can be a damage origin especially during exposure on negative temperature influence. One of the non-destructive techniques that can be applied for evaluation of internal structure of non- conductive materials (like glass fiber reinforced polymers) is THz spectroscopy. This method can be used for identification of material structural disintegrations that results in changes of absorption coefficient, refractive index or scattering of THz waves propagating throughout analyzed material. The paper presents an application of THz spectroscopy for inspection of glass composite samples internal structure. The method was used for evaluation of internal material structure as well as detection, localization and determination of size of internal damage due to influence of moisture and exposure on negative temperature. During analysis the limitations of proposed method will be determined.

Paper Details

Date Published: 1 April 2019
PDF: 11 pages
Proc. SPIE 10972, Health Monitoring of Structural and Biological Systems XIII, 109720Z (1 April 2019); doi: 10.1117/12.2513265
Show Author Affiliations
Magdalena Mieloszyk, The Szewalski Institute of Fluid-Flow Machinery (Poland)
Katarzyna Majewska, The Szewalski Institute of Fluid-Flow Machinery (Poland)
Wieslaw Ostachowicz, The Szewalski Institute of Fluid-Flow Machinery (Poland)


Published in SPIE Proceedings Vol. 10972:
Health Monitoring of Structural and Biological Systems XIII
Paul Fromme, Editor(s)

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