Results 41 to 50 of about 6,856 (205)

THz QCL - Based active imaging applied to composite materials diagnostic [PDF]

, 2010
This paper presents a CW raster-scanning THz imaging setup, used to perform Non-Destructive Testing of Kevlar and carbon fibre samples. The setup uses a 2.5 THz Quantum Cascade Laser as a source.
Barbieri, Stefano, Destic, Fabien, Massenot, Sébastien, Mollier, Jean-Claude, Petitjean, Yoann   +4 more
core   +1 more source

Non-destructive evaluation of localised heat damage occurring in carbon composites using thermography and thermal diffusivity measurement [PDF]

, 2018
Carbon fibre reinforced polymer (CFRP) composites are now a common occurrence in the aerospace sector especially with their introduction into the aero-engine. With their ever-increasing use in harsh and extreme environments, it is important to understand
Addepalli, Aziz Ucur, Biasi, Callister, Dara, Feih, Friis-Pedersen, Grenyer, Jingjing Yu, Kaw, Lau, Lee, Marine Colle, Matzkanin, Nakamura, Pelivanov, Rajkumar Roy, Ray, Santana, Shepard, Slifka, Sri Addepalli, Street, Sun, Toivola, Wathsala Galhenege, Yifan Zhao, Zhao, Zhao   +28 more
core   +2 more sources

Active thermography to look beneath the surface of a historic German aircraft

Research and Review Journal of Nondestructive Testing, 2023
Thermography is a well-established non-destructive testing technique in materials research and defect detection. In addition, it is used on cultural heritage in the form of buildings and paintings.
Julia Frisch, Catharina Blaensdorf, Andreas Hempfer, Marisa Pamplona-Bartsch, Christian U. Grosse   +4 more
doaj   +1 more source

Numerical simulation of subsurface defect identification by pulsed thermography and improvement of this technique for noisy data

Fracture and Structural Integrity, 2019
Pulsed thermography is an active non-destructive technique which uses optical excitation source to stimulate heating of the object under investigation.
Oleg Plekhov, Anastasiya Kostina, Sergey Aizikovich   +2 more
doaj   +3 more sources

Active Infrared Thermography for Seal Contamination Detection in Heat-Sealed Food Packaging

Journal of Imaging, 2016
Packaging protects food products from environmental influences, assuring quality and safety throughout shelf life if properly performed. Packaging quality depends on the quality of the packaging material and of the closure or seal.
Karlien D’huys, Wouter Saeys, Bart De Ketelaere   +2 more
doaj   +1 more source

Compression of Pulsed Infrared Thermography Data With Unsupervised Learning for Nondestructive Evaluation of Additively Manufactured Metals

IEEE Access, 2022
Additive manufacturing (AM) of high-strength metals, which is typically based on laser powder bed fusion (LPBF), can introduce microscopic pores in the AM metal.
Xin Zhang, Jafar Saniie, Sasan Bakhtiari, Alexander Heifetz   +3 more
doaj   +1 more source

'In-situ' inspection technologies: Trends in degradation assessment and associated technologies [PDF]

, 2017
The advent of advanced, innovative and complex engineered systems has established new technologies that are far more superior and perform well even in harsh environments.
Addepalli, S., Axinte, D., Mehnen, J., Roy, R.   +3 more
core   +3 more sources

Localized Temperature Monitoring in Mouse Brain during Light Delivery via a Non‐Planar Tapered Fiber‐Integrated µRTD Sensor

Advanced Materials, EarlyView.
We report a multifunctional tapered optical fiber integrating a conformal micro‐resistance temperature detector (µRTD) for local, real‐time thermometry during optical stimulation. The platform combines light‐delivery and temperature sensing within a minimally invasive footprint, enabling detection of sub‐degree cortical heating under representative ...
Antonio Balena, Marco Bianco, Barbara Spagnolo, Muhammad Fayyaz Kashif, Alberto Bramati, Massimo De Vittorio, Ferruccio Pisanello   +6 more
wiley   +1 more source

Matched-Filter Thermography

Applied Sciences, 2018
Conventional infrared thermography techniques, including pulsed and lock-in thermography, have shown great potential for non-destructive evaluation of broad spectrum of materials, spanning from metals to polymers to biological tissues.
Nima Tabatabaei
doaj   +1 more source

Programmable Hydration Pathways Enable Reconfigurable Ionic Thermoelectrics for Energy Harvesting and Thermal‐Tactile Interaction

Advanced Science, EarlyView.
Programmable hydration pathways enable reconfigurable ionic thermoelectrics in polyquaternium hydrogels. By coupling microscopic solvation, mesoscale water channels, and macroscopic boundary control, hydration‐gated protonics decouples thermopower, response speed, and stability.
Zehao Zhao, Yun Shen, Dongyan Xu
wiley   +1 more source