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Infrared emissivity is a necessary parameter for computing models to predict road surface status and pavement temperature irrespective of the weather situation. In this work a new experimental device based on the indirect method was developed for the measurement of surface emissivities. The surface is exposed to modulated isotropic infrared radiation. The intensity reflected by the surface of the sample in a given direction is measured by a detector operating in the spectral range 1–40 µm. This large spectral range allows measurement of the total hemispheric emissivity defined in this case as emissivity. The effect of the temperature modulation frequency, surface composition and surface roughness on the emissivity measurements was investigated. The results show good ability of the device for the determination of emissivities at room temperature.

Acupressure is a healing therapy that provides stimulation without needle by applying any pressure to the meridians of traditional Chinese acupuncture (the most important branch of the tTraditional Chinese medicine). This article presents an application of the infrared thermography to the thermal reactivity of Human body skin due to the acupressure stimulation. To survey an in vivo human skin surface, during the feasibility and material validity test, we will discuss the different sources of uncertainties and slants bound to the measurement by infrared thermography, such as the skin surface's emissivity, the noise and the drift of the camera as well as the influence of the radiance emitted by the ambient surroundings. The main aim of this work is to highlight in infrared an objective evidence of the acupuncture points by infrared thermography under acupressure stimulation defined by the traditional Chinese acupuncture, by refining infrared thermography measuring methods. And finally twelve healthy acupuncture-naïve volunteers of our University participated to this scientific experimentation: a single-blinded in vivo trial "formula, placebo and sham" session.

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Some considerations for a method that simultaneously measures the temperature and emissivity of a metal in a high temperature furnace Rev. Sci. Instrum. 75, 5326 (2004); 10.1063/1.1818994Investigating material and functional properties of static random access memories using cantilevered glass multiple-wire force-sensing thermal probes A simple device for the measurement of emissivity, thermal conductivity, and diffusivity of opaque materials is described. The measurement method is based on the use of a harmonic excitation of a material sample plate. The front surface of the sample is heated periodically and its temperature is measured using a thermocouple. The sample back surface temperature is obtained by infrared thermography. Half of the sample back surface is covered by a black paint of known emissivity used as a reference to compute the sample surface directional emissivity. Thermal conductivity and diffusivity are simultaneously identified from both real and imaginary parts of experimental and theoretical heat transfer functions. Results are presented for a thermally thick sample of PVC, where the sample thickness is greater than the thermal diffusion length. The identified thermophysical properties are in agreement with literature values and reproducible results are obtained. Moreover, some limitations of the method are considered. First, the black paint layer influence on the heat transfer cannot be neglected in all the frequency ranges of measurement. Secondly, an accurate estimation of the thermal conductivity cannot be obtained without an exact knowledge of the heat transfer coefficient.

In order to obtain a good quantification of the heat flux emitted by a surface using infrared images, it is necessary to calculate accurate values of the surface temperature. Infrared images often distorted due to aberration and diffraction phenomena and electronic noise. A convolution product can model aberration and diffraction distortions and the detector noise is assumed to be stationary and additive. Image restoration can be treated as an ill-posed problem. Its solution is commonly obtained using regularisation methods.

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