Development of Novel Thermal Diffusivity Analysis by Spot Periodic Heating and Infrared Radiation Thermometer Method
A spot periodic heating method is a highly accurate, non-contact method for the evaluation of anisotropy and relative thermophysical property distribution. However, accurately evaluating thermal diffusivity is difficult due to the influence of temperature wave reflection from the whole surface of th...
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MDPI AG
2020-10-01
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| Online Access: | https://www.mdpi.com/1996-1944/13/21/4848 |
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| author | Sho Nagata Tsuyoshi Nishi Shugo Miyake Naoyoshi Azuma Kimihito Hatori Takaaki Awano Hiromichi Ohta |
| author_facet | Sho Nagata Tsuyoshi Nishi Shugo Miyake Naoyoshi Azuma Kimihito Hatori Takaaki Awano Hiromichi Ohta |
| author_sort | Sho Nagata |
| collection | DOAJ |
| description | A spot periodic heating method is a highly accurate, non-contact method for the evaluation of anisotropy and relative thermophysical property distribution. However, accurately evaluating thermal diffusivity is difficult due to the influence of temperature wave reflection from the whole surface of the sample. This study proposes a method to derive thermal diffusivity using a parameter table based on heat transfer equations using the concept of optimum distance between heating-point and measurement point. This method considers finite sample size, sensitivity distribution of infrared ray detector, intensity distribution of heating laser and sample thickness. In these results, the obtained thermal diffusivity of pure copper corresponded well with previous literature values. In conclusion, this method is considered highly effective in evaluating the thermal diffusivity in the horizontal direction. |
| first_indexed | 2024-03-10T15:13:50Z |
| format | Article |
| id | doaj.art-5b0559ca701d46ea878eccaa544859cb |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T15:13:50Z |
| publishDate | 2020-10-01 |
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| spelling | doaj.art-5b0559ca701d46ea878eccaa544859cb2023-11-20T19:04:36ZengMDPI AGMaterials1996-19442020-10-011321484810.3390/ma13214848Development of Novel Thermal Diffusivity Analysis by Spot Periodic Heating and Infrared Radiation Thermometer MethodSho Nagata0Tsuyoshi Nishi1Shugo Miyake2Naoyoshi Azuma3Kimihito Hatori4Takaaki Awano5Hiromichi Ohta6Graduate School of Science and Engineering, College of Engineering, Ibaraki University, Hitachi, Ibaraki 316-8511, JapanGraduate School of Science and Engineering, College of Engineering, Ibaraki University, Hitachi, Ibaraki 316-8511, JapanDepartment of Mechanical Engineering, Kobe City College of Technology, Kobe, Hyogo 651-2194, JapanGraduate School of Science and Engineering, College of Engineering, Ibaraki University, Hitachi, Ibaraki 316-8511, JapanHudson Laboratory, Bethel Corporation, Tsuchiura, Ibaraki 300-0037, JapanHudson Laboratory, Bethel Corporation, Tsuchiura, Ibaraki 300-0037, JapanGraduate School of Science and Engineering, College of Engineering, Ibaraki University, Hitachi, Ibaraki 316-8511, JapanA spot periodic heating method is a highly accurate, non-contact method for the evaluation of anisotropy and relative thermophysical property distribution. However, accurately evaluating thermal diffusivity is difficult due to the influence of temperature wave reflection from the whole surface of the sample. This study proposes a method to derive thermal diffusivity using a parameter table based on heat transfer equations using the concept of optimum distance between heating-point and measurement point. This method considers finite sample size, sensitivity distribution of infrared ray detector, intensity distribution of heating laser and sample thickness. In these results, the obtained thermal diffusivity of pure copper corresponded well with previous literature values. In conclusion, this method is considered highly effective in evaluating the thermal diffusivity in the horizontal direction.https://www.mdpi.com/1996-1944/13/21/4848thermal diffusivity analysisspot periodic heating and infrared radiation thermometer methodthe distance-variation methodaccuracy of thermal diffusivity |
| spellingShingle | Sho Nagata Tsuyoshi Nishi Shugo Miyake Naoyoshi Azuma Kimihito Hatori Takaaki Awano Hiromichi Ohta Development of Novel Thermal Diffusivity Analysis by Spot Periodic Heating and Infrared Radiation Thermometer Method Materials thermal diffusivity analysis spot periodic heating and infrared radiation thermometer method the distance-variation method accuracy of thermal diffusivity |
| title | Development of Novel Thermal Diffusivity Analysis by Spot Periodic Heating and Infrared Radiation Thermometer Method |
| title_full | Development of Novel Thermal Diffusivity Analysis by Spot Periodic Heating and Infrared Radiation Thermometer Method |
| title_fullStr | Development of Novel Thermal Diffusivity Analysis by Spot Periodic Heating and Infrared Radiation Thermometer Method |
| title_full_unstemmed | Development of Novel Thermal Diffusivity Analysis by Spot Periodic Heating and Infrared Radiation Thermometer Method |
| title_short | Development of Novel Thermal Diffusivity Analysis by Spot Periodic Heating and Infrared Radiation Thermometer Method |
| title_sort | development of novel thermal diffusivity analysis by spot periodic heating and infrared radiation thermometer method |
| topic | thermal diffusivity analysis spot periodic heating and infrared radiation thermometer method the distance-variation method accuracy of thermal diffusivity |
| url | https://www.mdpi.com/1996-1944/13/21/4848 |
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