JP5446008B2 - 超音波を用いた温度測定方法 - Google Patents
超音波を用いた温度測定方法 Download PDFInfo
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Description
超音波の速度と温度との関係式が予め求められた媒体に超音波を励起し、該媒体を伝播した前記超音波を非接触的に検出して、前記媒体の二次元又は三次元温度分布を算出する超音波を用いた温度測定方法であって、
前記超音波の検出点を固定した状態で前記超音波の励起点のみを移動させて、前記励起点と前記検出点との間の前記超音波の伝播時間を算出し、
前記媒体の前記二次元又は三次元温度分布を算出するために、前記励起点の各点と前記検出点との間の一次元温度分布を数値解析によって夫々算出し、
前記数値解析では、前記関係式と前記伝播時間とが利用されることを特徴とする超音波を用いた温度測定方法。
2 媒体(計測対象)
2a、2b 媒体の表面
2c 媒体の内部
3 ヒーター
4 超音波発生手段
5 集光手段
6 偏光手段
7 励起点走査手段
8 超音波検出手段
9 アナログ/デジタル変換器(A/D変換器)
10 制御・演算手段
11 温度測定手段
E1、E2、E3、E4、E5、E6、E7 超音波励起点
D 超音波検出点
tL 超音波伝播時間
Claims (8)
- 超音波の速度と温度との関係式が予め求められた媒体に超音波を励起し、該媒体を伝播した前記超音波を非接触的に検出して、前記媒体の二次元又は三次元温度分布を算出する超音波を用いた温度測定方法であって、
前記超音波の検出点を固定した状態で前記超音波の励起点のみを移動させて、前記励起点と前記検出点との間の前記超音波の伝播時間を算出し、
前記媒体の前記二次元又は三次元温度分布を算出するために、前記励起点の各点と前記検出点との間の一次元温度分布を数値解析によって夫々算出し、
前記数値解析では、前記関係式と前記伝播時間とが利用されることを特徴とする超音波を用いた温度測定方法。 - 前記超音波は非接触的に励起されることを特徴とする請求項1に記載の超音波を用いた温度測定方法。
- 前記超音波はレーザー光によって励起され、前記励起点の前記移動は前記レーザー光を励起点走査手段により走査することによって達成されることを特徴とする請求項2に記載の超音波を用いた温度測定方法。
- 前記検出点で検出される前記超音波が表面波であることを特徴とする請求項1〜3のいずれかに記載の超音波を用いた温度測定方法。
- 前記検出点で検出される前記超音波がバルク波であることを特徴とする請求項1〜3のいずれかに記載の超音波を用いた温度測定方法。
- 前記検出点で検出される前記超音波が表面波及びバルク波であることを特徴とする請求項1〜3のいずれかに記載の超音波を用いた温度測定方法。
- 前記数値解析は有限差分法に基づいていることを特徴とする請求項1〜6のいずれかに記載の超音波を用いた温度測定方法。
- 前記媒体が固体材料又は液体であることを特徴とする請求項1〜7のいずれかに記載の超音波を用いた温度測定方法。
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KR20220016403A (ko) * | 2020-07-31 | 2022-02-09 | 한국광기술원 | 레이저 초음파 탐상 및 파수신호처리 기반 비접촉 고온 슬리브강의 온도 측정장치 및 그 온도측정방법 |
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BR112016024604A2 (pt) | 2014-04-22 | 2017-08-15 | Skyrobot Inc | sistema de detecção e investigação de falha do painel solar |
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JPH0280922A (ja) * | 1988-09-16 | 1990-03-22 | Babcock Hitachi Kk | ガス流体の流速および温度を測定する方法 |
JP3459491B2 (ja) * | 1995-04-17 | 2003-10-20 | 新日本製鐵株式会社 | 内部温度測定装置 |
JP2000171232A (ja) * | 1998-12-03 | 2000-06-23 | Toshiba Corp | 超音波計測装置 |
JP2009031180A (ja) * | 2007-07-30 | 2009-02-12 | Central Res Inst Of Electric Power Ind | 内部温度の測定方法および測定装置 |
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KR20220016403A (ko) * | 2020-07-31 | 2022-02-09 | 한국광기술원 | 레이저 초음파 탐상 및 파수신호처리 기반 비접촉 고온 슬리브강의 온도 측정장치 및 그 온도측정방법 |
KR102493099B1 (ko) * | 2020-07-31 | 2023-01-30 | 한국광기술원 | 레이저 초음파 탐상 및 파수신호처리 기반 비접촉 고온 슬리브강의 온도 측정장치 및 그 온도측정방법 |
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