7 papers
Quantitative Infrared Thermographic Assessment of Hand Cooling Dynamics During Controlled Contact with Metal Plates
Pengfei Zhu, Hai Zhang, Stefano Sfarra +4
This study investigates the spatiotemporal thermal response of human hands during controlled contact cooling using short wave infrared (SWIR), mid wave infrared (MWIR), and long wa…
Generalized virtual wave reconstruction for vibrothermography: Overcoming the wavefront-free behavior and quantification challenges in the diffusion-wave field
Pengfei Zhu, Julien Lecompagnon, Mathias Ziegler +2
Wavefront-free behavior and the resulting quantification difficulties are intrinsic limitations of vibrothermography due to the diffusive nature of thermal fields. This work propos…
Thermal diffusivity measurement based on evaporative cryocooling excitation: Theory and experiments
Pengfei Zhu, Hai Zhang, Stefano Sfarra +4
Photo-thermal methods for measuring thermal diffusivity inherently pose an ill-posed inverse problem, affected by factors such as sample thickness, heating or cooling time, and exc…
Real-Time Super-Resolution Imaging System Based on Zero-Shot Learning for Infrared Non-Destructive Testing
Pengfei Zhu, Ziang Wei, Ahmad Osman +4
Infrared thermography (IRT) and photothermal coherence tomography (PCT) exhibit potential in non-destructive testing and biomedical fields. However, the inevitable heat diffusion s…
Thermal diffusivity characterization of impacted composites using evaporative cryocooling excitation and inverse physics-informed neural networks
Pengfei Zhu, Hai Zhang, Stefano Sfarra +5
The thermal diffusivity measurement of impacted composites using pulsed methods presents an ill-posed inverse problem influenced by multiple factors such as sample thickness, cooli…
A novel IR-SRGAN assisted super-resolution evaluation of photothermal coherence tomography for impact damage in toughened thermoplastic CFRP laminates under room temperature and low temperature
Pengfei Zhu, Hai Zhang, Stefano Sfarra +4
Evaluating impact-induced damage in composite materials under varying temperature conditions is essential for ensuring structural integrity and reliable performance in aerospace, p…