Nondestructive Inspection of Thin Basalt Fiber Reinforced Composites Using Combined Terahertz Imaging and Infrared Thermography

Abstract

The inspection of thin basalt fiber reinforced composite materials was carried out using two nondestructive methods: terahertz time domain imaging and infrared thermography. In order to combine the information about the defects arising in examined materials the inspection results were parametrized. In order to acquire more information content, new approximation based features are proposed. Then, a knowledge extraction based multivariate analysis of preselected features' vector was carried out. Finally, in order to integrate features distributions of representing different dynamic level of information, a multiresolution wavelet based data fusion algorithm was applied. The results are presented and discussed.

Integracja wyników badania aktywną termografią i techniką terahercową na potrzeby oceny defektów w materiałach kompozytowych

“…Do transformacji rozkładów parametrów do wspólnej przestrzeni wynikowej użyto standardowych modeli transformacji geometrycznych. Zależności przestrzenne występujące pomiędzy odpowiadającymi sobie parami punktów kontrolnych umożliwiały określenie wartości współczynników zastosowanych modeli transformacji [11]. Przykładowy wynik rejestracji przestrzennej danych przedstawiono na rysunku 8.…”

Glass–Adhesive–Steel Joint Inspection Using Mechanic and High Frequency Electromagnetic Waves

“…However, it should be emphasized that there is no single method to obtain information on all possible aspects of the layered structure being tested. Therefore, it is important to conduct multi-source inspection using a set of methods based on different physical foundations, allowing us to obtain complementary information and creating a more complete set or increasing the certainty of the correct assessment of the tested joint [ 1 , 2 , 3 , 4 ]. As a result, such numerous results can then be combined and expressed as a single one to provide a broader spectrum of information on the component state in one form.…”

Effect of Variable Thermal Conductivity on the Generalized Thermoelasticity Problems in a Fiber-Reinforced Anisotropic Half-Space

“…e material performance of fiber-reinforced composites is designable, and its corrosion resistance and durability are good. ose outstanding features inherent in fiber-reinforced composites have led to their widespread applications in aerospace, building engineering, automotive industries, and so on [7,8]. erefore, the fiber-reinforced effect of materials should be considered when studying mechanical behavior.…”