Ultrasonic Thermometry for Temperature Profiling of Heated Materials

Ihara, Ikuo; Tomomatsu, Takuya; Takahashi, Manabu; Kosugi, Akira; Matsuya, Iwao; Yamada, Hiroyuki

doi:10.1007/978-3-642-32180-1_13

Cited by 6 publications

(19 citation statements)

References 30 publications

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“…The sensor position for the simulation is given in Figure 1. The ultrasonic velocity used is based on the temperature-velocity relationship given by Ihara et al [22]. This is given as:…”

Section: Methodsmentioning

confidence: 99%

“…where ΔL is the change in length, αL is the linear coefficient of thermal expansion, ΔT is the change in temperature and L is the original material length. The ultrasonic velocity used is based on the temperature-velocity relationship given by Ihara et al [22]. This is given as: v(T) = −0.636T + 5917.6 (6) where v(T) is the temperature-dependent ultrasonic velocity and T is the temperature.…”

Section: Methodsmentioning

confidence: 99%

“…The simulation was run over the range of 25 to 25.5 • C to observe if the corresponding change in time of flight can be reliably measured. Equation (6), which was used for the simulation, is almost linear for a temperature range of 0-200 • C [22]-hence, in this simulation, the sensitivity is prioritized over range. The peak detection technique was used to record the time the ultrasonic pulse strikes the sensor at both the transmitting and receiving positions [20].…”

Section: Methodsmentioning

confidence: 99%

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Precision Core Temperature Measurement of Metals Using an Ultrasonic Phase-Shift Method

Olabode

Fletcher

Longstaff

et al. 2019

JMMP

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Temperature measurement is one of the most important aspects of manufacturing. There have been many temperature measuring techniques applied for obtaining workpiece temperature in different types of manufacturing processes. The main limitations of conventional sensors have been the inability to indicate the core temperature of workpieces and the low accuracy that may result due to the harsh nature of some manufacturing environments. The speed of sound is dependent on the temperature of the material through which it passes. This relationship can be used to obtain the temperature of the material provided that the speed of sound can be reliably obtained. This paper investigates the feasibility of creating a cost-effective solution suitable for precision applications that require the ability to resolve a better than 0.5 °C change in temperature with ±1 °C accuracy. To achieve these, simulations were performed in MATLAB using the k-wave toolbox to determine the most effective method. Based upon the simulation results, experiments were conducted using ultrasonic phase-shift method on a steel sample (type EN24T). The results show that the method gives reliable and repeatable readings. Based on the results from this paper, the same setup will be used in future work in the machining environment to determine the effect of the harsh environment on the phase-shift ultrasonic thermometry, in order to create a novel technique for in-process temperature measurement in subtractive manufacturing processes.

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“…The sensor position for the simulation is given in Figure 1. The ultrasonic velocity used is based on the temperature-velocity relationship given by Ihara et al [22]. This is given as:…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Precision Core Temperature Measurement of Metals Using an Ultrasonic Phase-Shift Method

Olabode

Fletcher

Longstaff

et al. 2019

JMMP

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“…Uma das maneiras de resolver uma equação diferencial parcial é por meio de um método numérico 5,6 . Neste estudo foi utilizado do Método das Diferenças Finitas (MDF), por ser um método de cálculo de problemas de valor de fronteira, conhecido por sua simplicidade e facilidade de implementação computacional.…”

Section: Modelagem Do Sistemaunclassified

“…Esse valor indica que a temperatura estimada pela TUS foi superior, na maioria dos casos, a aquelas obtidas empregando a TTP. Essas flutuações de temperatura registradas entre as técnicas se justificam pelo fato do tempo de resposta do sistema de termometria por ultrassom ser menor do que a resposta fornecida pelo sistema de termopares, conforme descrito na literatura 1,5,6,7 . O sistema de termometria por termopares foi empregado como técnica padrão, e tomando-o como referência, foi realizada a correlação dos dados obtidos com essa técnica e a de termometria por ultrassom.…”

Section: Termometria Por Ultrassomunclassified

Monitoramento De Temperatura Interna Em Materiais Por Termometria Ultrassônica

Andrade¹,

Vieira²

2017

Rev Bras Fis Med

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ResumoMedir a temperatura interna e/ou o gradiente de temperatura em materiais é de fundamental interesse, tanto nas engenharias quanto nas ciências básicas, pois o comportamento da distribuição da temperatura está intimamente relacionado com as propriedades do material. O objetivo desse estudo foi desenvolver um sistema de termometria por ultrassom para monitoramento interno de gradiente de temperatura em materiais submetidos a uma fonte de calor. A comparação das medições de temperatura derivadas de ambos os métodos apresentou concordância maior que 96%, com diferenças inferiores a 0,70°C. Portanto, conclui-se que a metodologia apresentada mostrou-se relevante dentro do contexto laboratorial para estimativa de temperatura interna de materiais aquecidos. Palavras-chave:Termometria

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