Dr. Peipei Liu Profile

Dr. Peipei Liu

at KAIST

SPIE Involvement:

Author

Publications (8)

Proceedings Article | 25 April 2023 Presentation + Paper

Structural displacement estimation using high-sampling acceleration and temporally aliased low-sampling vision measurements

Zhanxiong Ma, Peipei Liu, Jaemook Choi, Hoon Sohn

Proceedings Volume 12488, 1248815 (2023) https://doi.org/10.1117/12.2646413

KEYWORDS: Error analysis, Aliasing, Sampling rates, Cameras, Accelerometers, Sensors, Finite impulse response filters

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Proceedings Article | 25 April 2023 Presentation + Paper

Nonlinear ultrasonic analysis inspired by phase-based motion magnification

Peipei Liu, Zhanxiong Ma, Jinho Jang, Hoon Sohn

Proceedings Volume 12488, 124880L (2023) https://doi.org/10.1117/12.2657061

KEYWORDS: Ultrasonics, Video, Modulation, Material fatigue, Phase shift keying, Nonlinear optics, Tunable filters, Modulation frequency, Motion analysis, Denoising

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Proceedings Article | 22 April 2020 Paper

Coating thickness estimation in silicon wafer using ultrafast ultrasonic measurement

Peipei Liu, Kiyoon Yi, Hoon Sohn

Proceedings Volume 11381, 113811E (2020) https://doi.org/10.1117/12.2558380

KEYWORDS: Coating, Ultrasonics, Semiconducting wafers, Reflection, Ultrafast measurement systems, Reflectivity, Femtosecond phenomena, Gold

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Proceedings Article | 5 April 2017 Paper

Fatigue crack detection by nonlinear spectral correlation with a wideband input

Peipei Liu, Hoon Sohn

Proceedings Volume 10170, 101701Y (2017) https://doi.org/10.1117/12.2258746

KEYWORDS: Ultrasonics, Modulation, Aluminum, Transducers, Signal to noise ratio, Ferroelectric materials, Signal detection, Fourier transforms, Linear filtering

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Proceedings Article | 1 April 2016 Paper

Damage visualization using synchronized noncontact laser ultrasonic scanning

Peipei Liu, Timotius Yonathan Sunarsa, Hoon Sohn

Proceedings Volume 9805, 980514 (2016) https://doi.org/10.1117/12.2218700

KEYWORDS: Ultrasonics, Visualization, Laser systems engineering, Target detection, Corrosion, Q switched lasers, Nd:YAG lasers, Doppler effect, Laser Doppler velocimetry, Feature extraction, Wave propagation, Signal to noise ratio, Wavelets

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Proceedings Article | 23 March 2015 Paper

Fatigue crack visualization using noncontact laser ultrasonics and state space geometrical changes

Peipei Liu, Hoon Sohn

Proceedings Volume 9438, 94380B (2015) https://doi.org/10.1117/12.2084484

KEYWORDS: Ultrasonics, Modulation, Visualization, Pulsed laser operation, Nd:YAG lasers, Nonlinear optics, Complex systems, Transducers, Laser Doppler velocimetry, Laser scanners

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Proceedings Article | 9 March 2014 Paper

Development of a wireless nonlinear wave modulation spectroscopy (NWMS) sensor node for fatigue crack detection

Peipei Liu, Suyoung Yang, Hyung Jin Lim, Hyung Chul Park, In Chang Ko, Hoon Sohn

Proceedings Volume 9064, 906406 (2014) https://doi.org/10.1117/12.2045747

KEYWORDS: Sensors, Modulation, Acoustics, Ferroelectric materials, Active sensors, Spectroscopy, Field programmable gate arrays, Transducers, Signal processing, Algorithm development

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Proceedings Article | 8 March 2014 Paper

Non-contact visualization of nonlinear ultrasonic modulation for reference-free fatigue crack detection

Hyung Jin Lim, Byeongju Song, Byeongjin Park, Peipei Liu, Hoon Sohn

Proceedings Volume 9061, 90611B (2014) https://doi.org/10.1117/12.2046182

KEYWORDS: Modulation, Visualization, Ultrasonics, Laser Doppler velocimetry, Continuous wavelet transforms, Lawrencium, Optical filters, Aluminum, Transducers, Doppler effect

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Showing 5 of 8 publications

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