Results 81 to 90 of about 5,622 (205)

Detection of Through-Deck Type Fatigue Cracks in Steel Bridges by Self-Reference Lock-in Thermography

EPJ Web of Conferences, 2010
A new remote nondestructive inspection technique, based on thermoelastic temperature measurement by infrared thermography, is developed for detection and evaluation of fatigue cracks propagating from welded joints in steel bridges.
Tamakoshi T., Kubo S., Izumi Y., Sakagami T.   +3 more
doaj   +1 more source

Surface Micro‐Discharge Plasma for Multiple Teeth Bleaching: Efficacy, Mechanism and Safety

High Voltage, EarlyView.
ABSTRACT Hydrogen peroxide (H2O2) is the commonly‐used bleaching chemical in clinical practice, but its excessive concentrations can cause tooth damage. Atmospheric pressure cold plasma is considered a promising new technique for tooth bleaching. Surface micro‐discharge (SMD) devices can generate large‐scale plasma, which holds potential for treating ...
Ruike Chen, Haoran Feng, Yinglong Li, Hong Pan, Hangbo Xu, Zhen Jiao, Dongjie Cui, Ruonan Ma   +7 more
wiley   +1 more source

PyThermLIA: A Python library to implement digital lock-in processing

SoftwareX
PyThermLIA is a free and open-source Python library that implements a Digital Lock-in Amplifier for processing videos recorded by generic digital cameras.
E. Vargas, A. Bedoya, A. Borges, A. Calderon, O. Delgado, E. Marin   +5 more
doaj   +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

Sizing Wedge Delaminations Using Lock-in Thermography

Journal of Nondestructive Evaluation
Abstract Sizing hidden defects is a major challenge in many industries. In the last years we have successfully used optically excited lock-in infrared thermography to size the geometrical parameters of both infinite and semi-infinite uniform delaminations.
Ciria-Cosculluela, José C., Pérez-Arbulu, Jon, Salazar, Agustín, Celorrio, Ricardo, Mendioroz, Arantza   +4 more
openaire   +2 more sources

Assessing the Health and Functionality of the Microcirculation Using Thermal Imaging

Journal of Biophotonics, Volume 19, Issue 5, May 2026.
We review the techniques of thermal imaging for assessing the functional consequences of lowered blood flow in the microcirculation that accompanies many chronic, inflammatory diseases. A comparison is made with laser Doppler/speckle methods. ABSTRACT The microcirculation, composed of vessels below 100 μm in diameter, sustains tissue perfusion and ...
Douglas B. Kell, Etheresia Pretorius
wiley   +1 more source

Crack growth around stress concentrations in pipes and tubes [PDF]

, 2012
Fatigue crack growth behaviour in pipes fundamentally differs from fatigue growth in shafts and flat plates. The aim of this paper is to give a better understanding of this phenomenon.
De Baets, Patrick, De Waele, Wim, Galle, Timothy, Loncke, Koen, Van Wittenberghe, Jeroen   +4 more
core  

Advanced Composite Technologies for High‐Performance Sports Equipment: Materials, Manufacturing, and Sustainability Perspectives

Polymers for Advanced Technologies, Volume 37, Issue 5, May 2026.
ABSTRACT Advanced composite materials have become the leading material platform for high‐performance sports equipment, enabling superior strength‐to‐weight performance, stiffness tailoring, and enhanced functional integration compared with conventional materials. This review summarizes state‐of‐the‐art developments across multiple sporting disciplines,
Alhayat Getu Temesgen, Ümit Koç, Jörg Kaufmann, Holger Cebulla, Ercan Aydoğmuş, Hasan Arslanoğlu   +5 more
wiley   +1 more source

In-Plane Heatwave Thermography as Digital Inspection Technique for Fasteners in Aircraft Fuselage Panels

Applied Sciences, 2020
The inspection of fasteners in aluminium joints in the aviation industry is a time consuming and costly but mandatory task. Until today, the manual procedure with the bare eye does not allow the temporal tracking of a damaging behavior or the objective ...
Michael Stamm, Peter Krüger, Helge Pfeiffer, Bernd Köhler, Johan Reynaert, Martine Wevers   +5 more
doaj   +1 more source

Phase-synchronous undersampling in nonlinear spectroscopy

, 2018
We introduce the concept of phase-synchronous undersampling in nonlinear spectroscopy. The respective theory is presented and validated experimentally in a phase-modulated quantum beat experiment by sampling high phase modulation frequencies with low ...
Binz, Marcel, Bruder, Lukas, Stienkemeier, Frank   +2 more
core   +1 more source