Accuracy Evaluation of Surface Temperature Profiling by a Laser Ultrasonic Method

Kosugi, Akira; Ihara, Ikuo; Matsuya, Iwao

doi:10.1143/jjap.51.07gb01

Cited by 17 publications

(13 citation statements)

References 23 publications

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“…Under the condition of ideal gas at a constant pressure, according to Boyle's law, the relationship of ultrasonic speed and temperature is regarded as 5,6 c =…”

Section: The Basic Principle Of Ultrasonic Thermometrymentioning

confidence: 99%

Study of ultrasonic thermometry based on ultrasonic time-of-flight measurement

et al. 2016

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Ultrasonic thermometry is a kind of acoustic pyrometry and it has been evolving as a new temperature measurement technology for various environment. However, the accurate measurement of the ultrasonic time-of-flight is the key for ultrasonic thermometry. In this paper, we study the ultrasonic thermometry technique based on ultrasonic time-of-flight measurement with a pair of ultrasonic transducers for transmitting and receiving signal. The ultrasonic transducers are installed in a single path which ultrasonic travels. In order to validate the performance of ultrasonic thermometry, we make a contrast about the absolute error between the measured temperature value and the practical one. With and without heater source, the experimental results indicate ultrasonic thermometry has high precision of temperature measurement.

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“…Under the condition of ideal gas at a constant pressure, according to Boyle's law, the relationship of ultrasonic speed and temperature is regarded as 5,6 c =…”

Section: The Basic Principle Of Ultrasonic Thermometrymentioning

confidence: 99%

Study of ultrasonic thermometry based on ultrasonic time-of-flight measurement

et al. 2016

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“…Contact measurement techniques, for instance, thermal thermocouples, thermal resistances, mercury thermometers, and fiber pyrometer, are hardly applied to accomplish temperature field distribution reconstruction, since these methods are only suitable for single-point temperature measurement [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Two‐Dimensional Temperature Field Distribution Reconstruction Based on Least Square Method and Radial Basis Function Approximation

Jia

Xiong

2017

Mathematical Problems in Engineering

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The information of temperature field distribution is complex but quite important for theoretical study and industrial applications, such as burning, drying, and heating, because it can reflect the internal running state of industrial equipment, assist to develop control strategy, and ensure safety in operation. Acoustic imaging is a kind of noncontact temperature measurement technique which is able to achieve temperature field distribution reconstruction. The process of temperature field distribution reconstruction using acoustic imaging is an inverse problem and its reconstruction performance depends on reconstruction algorithm. In this paper, a modified reconstruction algorithm is investigated. Compared with other reconstruction methods of least square algorithm and radial basis function approximation, the reconstruction results indicate that the modified reconstruction algorithm occupies the best information reflection of temperature field distribution and the reconstruction accuracy is improved.

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“…However, as intrusive methods, they require instruments to direct contact with measure medium, and the relatively slow time response in measurement always brings about inaccuracy; simultaneously, the temperature information gathered is insufficient owing to these methods' single-point measurement [2,[10][11][12]. The infrared radiation technique is convenient but just for measuring surface temperature, and influences due to different emissivity and reflection of infrared radiations from other sources often result in deterioration of accuracy [11][12][13]. Although methods using fiber optics become popular recently, they are not suitable for monitoring non-uniform temperature distribution either.…”

Section: Introductionmentioning

confidence: 99%

“…But it is a pity that since the cross section of flame is divided into a series of concentric rings and temperature in each ring is expressed as a discrete value, it is just effective for axisymmetric free flames. A laser ultrasonic method for evaluation of temperature distribution is presented on the basis of temperature dependence of ultrasound [10,11]. Nevertheless, it is practicable just for surface temperature distribution, as the surface acoustic waves used here propagate merely on the surface of medium.…”

Section: Introductionmentioning

confidence: 99%

“…To overcome the shortcomings of conventional temperature measurement techniques and make up for the deficiencies of existing temperature distribution reconstruction methods, a nonintrusive ultrasonic technique of temperature distribution reconstruction is investigated in this paper, which is also presented based on the dependence of ultrasound velocity on temperature [3,[10][11][12][19][20][21][22][23]. Temperature distribution reconstruction by this ultrasonic thermometry is an inversion problem, whose solution depends greatly on reconstruction algorithm.…”

Section: Introductionmentioning

confidence: 99%

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A New Algorithm for Reconstructing Two-Dimensional Temperature Distribution by Ultrasonic Thermometry

Shen

Xiong

Shi

et al. 2015

Mathematical Problems in Engineering

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Temperature, especially temperature distribution, is one of the most fundamental and vital parameters for theoretical study and control of various industrial applications. In this paper, ultrasonic thermometry to reconstruct temperature distribution is investigated, referring to the dependence of ultrasound velocity on temperature. In practical applications of this ultrasonic technique, reconstruction algorithm based on least square method is commonly used. However, it has a limitation that the amount of divided blocks of measure area cannot exceed the amount of effective travel paths, which eventually leads to its inability to offer sufficient temperature information. To make up for this defect, an improved reconstruction algorithm based on least square method and multiquadric interpolation is presented. And then, its reconstruction performance is validated via numerical studies using four temperature distribution models with different complexity and is compared with that of algorithm based on least square method. Comparison and analysis indicate that the algorithm presented in this paper has more excellent reconstruction performance, as the reconstructed temperature distributions will not lose information near the edge of area while with small errors, and its mean reconstruction time is short enough that can meet the real-time demand.

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Accuracy Evaluation of Surface Temperature Profiling by a Laser Ultrasonic Method

Cited by 17 publications

References 23 publications

Study of ultrasonic thermometry based on ultrasonic time-of-flight measurement

Study of ultrasonic thermometry based on ultrasonic time-of-flight measurement

Two‐Dimensional Temperature Field Distribution Reconstruction Based on Least Square Method and Radial Basis Function Approximation

A New Algorithm for Reconstructing Two-Dimensional Temperature Distribution by Ultrasonic Thermometry

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