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Simulation of Layer Thickness Measurement in Thin Multi-Layered Material by Variable-Focus Laser Ultrasonic Testing [PDF]
Sensors, 2023 Thin multi-layered materials are widely used in key structures of many high technology industries. To ensure the quality and safety of structures, layer thickness measurement by non-destructive testing (NDT) techniques is essential.
Jinxing Qiu +3 more
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Enhanced Electromagnetic Ultrasonic Thickness Measurement with Adaptive Denoising and BVAR Spectral Extrapolation [PDF]
SensorsElectromagnetic ultrasonic testing technology, owing to its couplant-free, high-temperature-resistant, and non-contact characteristics, exhibits unique advantages for thickness measurement in harsh industrial environments.
Lijun Ma +4 more
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Measuring the Thickness of Fiber Mats Using Light Transmittance via Image Processing
Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 2023 Fiber materials possess unique properties, including a large active surface area, high surface-to-volume ratio, high porosity, high mechanical performance, and low density. Consequently, they serve as key components in various applications such as energy
Hercan Yavuztürk +5 more
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Sensors, 2021 Ultrasonic guided waves are already used for material characterization. The advantage of these waves is that they propagate in the plane of a plate and their propagation characteristics are sensitive to properties of the material.
Rymantas Jonas Kažys, Olgirdas Tumšys
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THz-TDS Techniques of Thickness Measurements in Thin Shim Stock Films and Composite Materials
Applied Sciences, 2021 Terahertz wave (T-ray) scanning applications are one of the most promising tools for nondestructive evaluation. T-ray scanning applications use a T-ray technique to measure the thickness of both thin Shim stock films and GFRP (glass fiber-reinforced ...
Kwang-Hee Im +4 more
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Method for Film Thickness Mapping with an Astigmatic Optical Profilometer
Sensors, 2022 An astigmatic optical profilometer is a precision instrument with advantages such as high resolution, high bandwidth, a compact size, and low cost. However, current astigmatic optical profilometers measure only surface morphology, and their potential for
Hsien-Shun Liao +2 more
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Waveguide Structure Design and Simulation for High-Temperature Corrosion Thickness Detection
Applied Sciences, 2022 Equipment corrosion often happens in the petrochemical industry, especially when high temperature materials are transported. The corrosion phenomenon should be monitored as a leak may occur due to corrosion and even cause fires and explosions.
Yan Li +4 more
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Photonics, 2023 Leveraging their unique phase modulation characteristics, birefringent waveplates have been widely used in various optical systems. With the development of material science and manufacturing techniques, the polarization properties of waveplates have ...
Zhou Jiang +3 more
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Sensors, 2022 In high-temperature environments, the signal-to-noise ratio (SNR) of the signal measured by electromagnetic acoustic transducers (EMAT) is low, and the signal characteristics are difficult to extract, which greatly affects their application in practical ...
Shuaijie Zhao +4 more
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A Novel Approach for Measurement of Free-Form Optical Elements with Digital Holographic Microscopy
Micromachines, 2022 Free-form optical elements face significant challenges in high-precision measurement due to their high complexity and non-rotational symmetry. Digital holographic microscopy (DHM), as one of the methods for the measurement of free-form optical elements ...
Xuhui Zhang +4 more
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