Scanning optical pyrometer for measuring temperatures in hollow cathodes.

New Optical Pyrometer for Measuring the Temperature of Aluminum

Two-Dimensional Soot Pyrometry with a Color Digital Camera

The potential application of a relatively low-cost, color digital camera, for use as a three-color optical pyrometer is investigated with the goal of measuring soot temperatures within a flame. The use of the built-in color filter array (CFA) of the digital camera allows for two-dimensional imaging of flame emission at the wavelengths of the color filters. The image data provide pixel-by-pixel ...

Fiber-Optic Pyrometer with Optically Powered Switch for Temperature Measurements

We report the experimental results on a new infrared fiber-optic pyrometer for very localized and high-speed temperature measurements ranging from 170 to 530 °C using low-noise photodetectors and high-gain transimpedance amplifiers with a single gain mode in the whole temperature range. We also report a shutter based on an optical fiber switch which is optically powered to provide a reference s...

Effect of temperature on kinetics of the hydrogen evolution reaction on Ni-P-C cathodes in alkaline solution

The kinetics of hydrogen evolution reaction (HER) was studied in 1M NaOH at various temperatures (298 to 358 K) on Ni-P-C (composite electrodes. The electrochemical efficiency of the electrodes has been evaluated on the basis of electrochemical data obtained from the steady-state polarization Tafel curves, electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) in 1M NaOH solut...

Residual Stresses Measurement in Hollow Samples Using Contour Method

Residual stresses are created usually undesirably during manufacturing processes, including casting, welding, metal forming, etc. Residual stresses alone or in combination with other factors can cause the destruction and fracture of components or significant decline in their service life. Therefore, it is crucial to measure the residual stresses. Contour method is a destructive testing method c...