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Characterizing Subsurface Rectangular Tilted Heat Sources Using Inductive Thermography
(MDPI, 2020-08-06)
In this study, we characterize the lateral dimension, depth, and inclination of buried tilted rectangular heat sources from time domain temperature data measured at the surface. The heat sources are representative for ...
Vertical Cracks Excited in Lock-in Vibrothermography Experiments: Identification of Open and Inhomogeneous Heat Fluxes
(MDPI, 2022-03-17)
Lock-in vibrothermography has proven to be very useful to characterizing kissing cracks producing ideal, homogeneous, and compact heat sources. Here, we approach real situations by addressing the characterization of ...
Sizing the Depth and Width of Narrow Cracks in Real Parts by Laser-Spot Lock-In Thermography
(MDPI, 2021-09-28)
We present a complete characterization of the width and depth of a very narrow fatigue crack developed in an Al-alloy dog bone plate using laser-spot lock-in thermography. Unlike visible micrographs, which show many surface ...
Thermal Diffusivity Measurement of Laser‐ Deposited AISI H13 Tool Steel and Impact on Cooling Performance of Hot Stamping Tools
(MDPI, 2020-01-20)
Additive manufacturing is a technology that enables the repair and coating of high‐addedvalue
parts. In applications such as hot stamping, the thermal behavior of the material is essential
to ensure the proper operation ...
Measurement of the thermal conductivity of fluids using laser spot lock-in thermography
(Elsevier, 2020-03-25)
In this work, we propose a new method to retrieve the thermal conductivity of fluids, kf, using laser spot
lock-in infrared thermography. The measurement cell consists in two paralepidid blocks separated by a
narrow gap ...
Measuring the in-plane thermal diffusivity of moving samples using laser spot lock-in thermography
(Elsevier, 2020-01-21)
In this work we deal with samples that move at constant speed and are illuminated by a modulated and focused
laser beam. We have obtained a general expression for the surface temperature of these moving samples: it is
valid ...
Measurement of in-plane thermal diffusivity of solids moving at constant velocity using laser spot infrared thermography
(Elsevier, 2018-11-07)
In this work, an infrared thermography setup is proposed to measure the in-plane thermal diffusivity of
(an)isotropic samples that are moving at constant velocity, as it is the case of in-line production or in-line
quality ...
Thermal effusivity measurements of thermal insulators using the photopyroelectric technique in the front configuration
(Elsevier, 2018-03-21)
In the photopyroelectric (PPE) technique in the front configuration one surface of a pyroelectric sensor is illuminated by a modulated laser beam, whereas the other surface is in contact with the sample under study. A ...
Quantifying the width and angle of inclined cracks using laser-spot lock-in thermography
(Elservier, 2021-06-30)
In this work we introduce a method to determine the width and the orientation of tilted cracks. This method
combines laser-spot lock-in thermography and calculations of the sample temperature by means of finite ...
Retrieving the thermal diffusivity and effusivity of solids from the same frequency scan using the front photopyroelectric technique
(IOP Science, 2017-09-14)
The photopyroelectric (PPE) technique in the front configuration consists in illuminating one
surface of a pyroelectric slab while the other surface is in contact with the test sample. This
method has been widely used ...