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Article
A novel flaw detection approach in carbon steel pipes through ultrasonic guided waves and optimized transformer neural networks
In the present study, ultrasonic guided wave testing (UGWT) is used as a nondestructive inspection technique to identify flaws in carbon steel pipe. The selection of a wave mode in UGWT is critical. Therefore,...
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Article
A novel method of ultrasonic tomographic imaging of defects in the coating layer by image fusion and binarization techniques
Protective coating materials are applied in a thin layer to the offshore metallic structure against corrosion. Delamination of the coating material is the main limitation and is one of the main issues encounte...
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Chapter and Conference Paper
Nonlinearity Study of Damaged Spring Materials Using Guided Wave
Nonlinear ultrasonic techniques that can detect micro crack or defects before use of ultrasonic nonlinearity are emerging as a way to predict the life of materials. Guided wave propagates according to the shap...
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Article
Open AccessGeneral technoeconomic analysis for electrochemical coproduction coupling carbon dioxide reduction with organic oxidation
Electrochemical processes coupling carbon dioxide reduction reactions with organic oxidation reactions are promising techniques for producing clean chemicals and utilizing renewable energy. However, assessment...
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Article
An experimental study on second harmonic generation of guided wave in fatigued spring rod
Conventional ultrasonic inspection techniques especially ultrasonic guided wave and wave testing methods show excellent capability for evaluating the material integrity of the structures. The dominate characte...
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Article
Open AccessPolymer Nanodot-Hybridized Alkyl Silicon Oxide Nanostructures for Organic Memory Transistors with Outstanding High-Temperature Operation Stability
Organic memory devices (OMDs) are becoming more important as a core component in flexible electronics era because of their huge potentials for ultrathin, lightweight and flexible plastic memory modules. In par...
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Article
Modelling and analysis of pre-combustion CO2 capture with membranes
A pre-combustion CO2 capture system was modelled with three different membranes. It comprised an amine absorber for the elimination of H2S, high- and low-temperature water gas shift reactors for the conversion of...
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Article
Erratum: Stable single-unit-cell nanosheets of zeolite MFI as active and long-lived catalysts
Nature 461, 246–249 (2009) In this Letter, the affiliations for Osamu Terasaki were incorrect. This author is associated with affiliations 4 and 5 from this Letter, the Graduate School of EEWS (WCU), KAIST, an...
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Article
Stable single-unit-cell nanosheets of zeolite MFI as active and long-lived catalysts
Zeolites — microporous crystalline aluminosilicates — are widely used in industry as size- and shape-selective catalysts. But the very micropores that make this catalytic activity possible also cause diffusion...
