Eddy current pulsed thermography for ballistic impact evaluation in basalt-carbon hybrid composite panels

Abstract

In this paper, eddy current pulsed thermography was used to evaluate ballistic impact damages in basalt-carbon hybrid fiber-reinforced polymer composite laminates for the first time, to our knowledge. In particular, different hybrid structures including intercalated stacking and sandwich-like sequences were used. Pulsed phase thermography, wavelet transform, principle component thermography, and partial least-squares thermography were used to process the thermographic data. Ultrasound C-scan testing and X-ray computed tomography were also performed for comparative purposes. Finite element analysis was used for validation. Finally, an analytical and comparative study was conducted based on signal-to-noise ratio analysis.

Sparse Representation Classification Based on Flexible Patches Sampling of Superpixels for Hyperspectral Images

“…Therefore, we choose the compression feature (first three principle components) to construct pseudo color image by principal component analysis. In order to deal with the complicated texture, many image enhancement strategies have been developed [27][28][29][30][31][32][33]. In this paper, we use the conduction function to implement the nonlinear coupling diffusion filtering on the pseudo color image, which is processed by the total variation model in [34].…”

Detection of Fatigue Microcrack Using Eddy Current Pulsed Thermography

“…Wang et al [16] used PCA to process the artificial crack in a steel sample and natural fatigue cracks in aircraft brake components. Zhang et al [17] performed PCA and partial least-squares thermography (PLST) to improve the infrared image performance for defect detection in composite panels. Among the above dimension reduction and matrix decomposition methods, these algorithms provided manifest high levels of flaw contrast relative to that present in the unprocessed data.…”

Anti-Ballistic Properties of Aramid Fabrics and Composites: A Review

“…1 Traditional body armor is made of multiple layers of metal or multiple layers of a single fabric, reducing flexibility and increasing weight that are inconvenient to the wearer's movements. There are various materials suitable for body armor, and many new high-performance materials stand out, such as ultra-high molecular weight polyethylene, [2][3][4][5][6] basalt, [7][8][9][10][11][12] poly(p-phenylene-2,6-benzobisoxazole) (PBO), 13,14 and carbon fiber. [15][16][17][18][19] The advantages of aramid fabric include softness, light weight, high strength, and corrosion resistance.…”