Measurement technology for material emissivity under high temperature dynamic heating conditions

Wang, Hui; Chen, Dejiang; Wang, Guolin; Long, Yongsheng; Luo, Jie; Liu, Liping; Yang, Qiang

doi:10.1016/j.measurement.2013.07.041

Cited by 22 publications

(9 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The detailed measurement method in Refs. [1], which is involving surface temperature and emissivity of a sample material using the signals collected by FTIR, is applied to calculate thermal radiation parameters of graphite under the dynamic heating environment when the optimal spectral band for noncontact temperature measurement is identified adaptively.…”

Section: Adaptive Measuring Temperature Spectral Band Identification and Results Analysismentioning

confidence: 99%

See 1 more Smart Citation

Adaptive spectral band identification method in noncontact temperature measurement based on dynamic programming

et al. 2016

Self Cite

View full text Add to dashboard Cite

An adaptive method based on dynamic programming is proposed to identify the spectral band for non-continuous measurement of surface temperature of heatshield materials when Fourier transform infrared (FTIR) spectrometer is used to collect the radiation spectrum in the dynamic heating environment of a high-frequency plasma wind tunnel. First, the radiation spectrum is converted to a time series. Then, high-frequency parts of the measurement spectral signal are obtained by multi-resolution analysis of one-dimensional discrete wavelet and then the suitable spectral band required by a non-contact temperature measurement is adaptively identified based on dynamic programming. Eventually, surface temperature and its corresponding emissivity can be determined. Results of the experiment conducted on a benchmark material (graphite) in the dynamic heating environment of high frequency plasma wind tunnel show the proposed method to be practical.

show abstract

Section: Adaptive Measuring Temperature Spectral Band Identification and Results Analysismentioning

confidence: 99%

“…In this study, the discrete calibrated spectrum irradiance obtained by FTIR [1] is treated as one set of time series sequence data. Only after the dynamic programming is applied to obtain the desired time series band, the time band should be converted into the corresponding spectral band by simple linear proportional relationship.…”

Section:    Ymentioning

confidence: 99%

Adaptive spectral band identification method in noncontact temperature measurement based on dynamic programming

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…Radiation thermometry [1][2][3] frequently uses a multi-wavelength pyrometer (MWP) [4][5][6] to overcome the restrictions from the unknown emissivity of traditional one-color pyrometers and the constant emissivity vs. wavelength for two-color ratio pyrometers [7,8]. A multi-wavelength pyrometer can obtain the true temperature of the target without emissivity information by using the principle of multi-wavelength radiation thermometry [9].…”

Section: Introductionmentioning

confidence: 99%

Development of a Pyrometer That Measures the True Temperature Field of the Two-Dimensional Array

Sun

Luan

et al. 2020

Applied Sciences

View full text Add to dashboard Cite

This paper develops a two-dimensional array pyrometer, which can measure the true temperature field of the two-dimensional array. The pyrometer consists of an optical part, a circuit part and a software part. In the optical part, the radiation energy of the two-dimensional array target is obtained by scanning with the rotating mirror. Then, the radiation signal is converted and amplified by the circuit part. The software component realizes the functions of the pyrometer calibration, signal acquisition and data processing. The data processing adopts the secondary measurement method to calculate the true temperature and uses the multi-threaded method to improve the operational efficiency. Experiments show that the uncertainty of the two-dimensional pyrometer array can reach 1.43%. Compared with the single-threaded method, the true temperature operation time of the two-dimensional pyrometer array is improved by 77%, which verifies that the software operational efficiency is greatly improved.

show abstract

“…In order to characterize the thermal radiation performance, the emissivity is the essential parameter to determine the cooling efficiency of thermal radiation [6][7][8]. Evaluation of the emissivity of thermal protection materials is therefore an important problem in spacecraft design.…”

Section: Introductionmentioning

confidence: 99%

EFFECTS OF TEMPERATURE ON THE SPECTRAL EMISSIVITY OF C/SiC COMPOSITES

Lü¹,

Dai²,

Zhang³

et al. 2016

Ceramics - Silikaty

View full text Add to dashboard Cite

The effect of temperature on the infrared spectral emissivity of C/SiC composites as a thermal protection material has been studied, using a measurement system based on a FT-IR spectrometer. The spectral emissivity of C/SiC composites in the wavelength range 3-20 μm and in the temperature range from 1000 K to over 2000 K was measured. Based on the analysis of the measured spectral emissivity, variations of the spectral emissivity with temperature were studied. The relationship between emissivity and temperature in some certain wavelength was found.

show abstract

Measurement technology for material emissivity under high temperature dynamic heating conditions

Cited by 22 publications

References 23 publications

Adaptive spectral band identification method in noncontact temperature measurement based on dynamic programming

Adaptive spectral band identification method in noncontact temperature measurement based on dynamic programming

Development of a Pyrometer That Measures the True Temperature Field of the Two-Dimensional Array

EFFECTS OF TEMPERATURE ON THE SPECTRAL EMISSIVITY OF C/SiC COMPOSITES

Contact Info

Product

Resources

About