JPWO2007015532A1 - 応力解析用の被測定物、該被測定物に塗膜層を形成するための塗布液及び応力発光構造体 - Google Patents
応力解析用の被測定物、該被測定物に塗膜層を形成するための塗布液及び応力発光構造体 Download PDFInfo
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Abstract
Description
本発明は、上記の問題点を解決するものである。
本発明者等はこのような背景に基づいて鋭意研究を行った結果、被測定物の歪みエネルギーの応力発光物質に対する伝達性は、応力発光物質の層を構成する基材自体の弾性係数に依存するものであることを見出し、この知見により本発明を達成したのである。付言すれば、応力発光物質を構成する基材においては、弾性率が高いほど透明性に欠けるものが多いため、弾性率の高い基材をあえて選択して用いることはなく、丈夫で透明性の高い、つまり弾性率の低い基材が用いられてきた。しかし、本発明者らは上記知見を見出し、従来の応力発光物質より極めて良好に発光を得ることができる本発明を達成したのである。
その表面に歪エネルギーを受けて発光する塗膜層が形成されている応力解析用の被測定物であるために被測定物と同体となって塗膜層が歪んで発光する。
1A 応力発光粒子
1B 基材
2 被測定物
(被測定物)
被測定物としては、応力解析を行う対象となるもの、すなわち応力解析用のものであれば種々のものが採用でき、材質としては金属、セラミック、合成樹脂等により形成されたものである。
(合成樹脂層)
本発明でいう合成樹脂層1とは、応力発光粒子1Aと基材1Bよりなり、その基材に応力発光粒子が所定量混入されているものである(図1参照)。換言すれば、上記合成樹脂層1は、応力発光粒子1Aと基材1Bとを含有する応力発光物質である。
(原理)
図1は、それぞれ本発明の応力伝達の態様を説明する模式図である。
σ1 = (E1/E2)・σ2 (式2)
ここで、ε、σ、Eはそれぞれ歪、応力、弾性率を表し、下付文字1及び2はそれぞれ合成樹脂層1及び被測定物2を表している。
すなわち、式2より、発光強度は塗膜層である合成樹脂層1の弾性率E1に比例する。
(被測定物を使った応力測定システムの例)
参考までに、図4に本発明の被測定物を対象とした応力測定システムの例を示す。
(表面に合成樹脂層を形成した構造物)
以上のように、本実施の形態では、本願発明に係る合成樹脂層を用いて、応力解析をする実施の形態について説明した。しかし、上記合成樹脂層は、その発光を良好に得ることができるため、上記被測定物に限定されず、さまざまな構造物に塗布して用いることができる。
被測定物(ステンレス製)の表面に矩形(50mm×30mm、厚み30μm)の合成樹脂層を形成した。
基材としてポリ塩化ビリニデン樹脂(弾性率が0.4GPa)を使った以外は比較例1と同様にして実験を行った。
以上のような実施例、及び比較例における光強度を表1に示す。
Claims (11)
- 応力解析用の被測定物であって、その表面に歪エネルギーの変化を受けて発光する塗膜層が形成されており、
前記塗膜層は、応力発光粒子を含有する合成樹脂層により形成されており、
前記合成樹脂層の基材の弾性率が1.0GPa以上であることを特徴とする被測定物。 - 前記合成樹脂層100μmあたりの光透過率が、0.1%以上40%以下であることを特徴とする請求項1記載の被測定物。
- 前記被測定物が金属又は合成樹脂材よりなることを特徴とする請求項1又は2に記載の被測定物。
- 前記被測定物が、自動車の外装用部品又は内蔵部品であることを特徴とする請求項1又は2記載の被測定物。
- 前記被測定物が、航空機の外装用部品又は内蔵部品であることを特徴とする請求項1又は2記載の被測定物。
- 前記合成樹脂層の基材がエポキシ樹脂又はウレタン樹脂であることを特徴とする請求項1又は2記載の被測定物。
- 応力発光粒子の母体材料が、スタフドトリジマイト構造、3次元ネットワーク構造、長石構造、ウルツ構造、スピネル構造、コランダム構造又はβ−アルミナ構造を有する酸化物、硫化物、炭化物又は窒化物であることを特徴とする請求項1又は2記載の被測定物。
- 塗膜厚さが1μm〜500μmであることを特徴とする請求項1又は2記載の被測定物。
- 請求項1乃至8のいずれか1項に記載の塗膜層を形成するための塗布液。
- 構造体の表面に請求項1又は2に記載の合成樹脂層を形成してなることを特徴とする応力発光構造体。
- 上記構造体が、建築用器材、試験研究用器材、紙又はカードであることを特徴とする請求項10に記載の応力発光構造体。
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PCT/JP2006/315335 WO2007015532A1 (ja) | 2005-08-03 | 2006-08-02 | 応力解析用の被測定物、該被測定物に塗膜層を形成するための塗布液及び応力発光構造体 |
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WO2009037914A1 (ja) * | 2007-09-21 | 2009-03-26 | National Institute Of Advanced Industrial Science And Technology | 構造体の欠陥を検知するための方法及びシステム |
JP5007978B2 (ja) * | 2007-09-21 | 2012-08-22 | 独立行政法人産業技術総合研究所 | 構造体の欠陥を検知するための方法及びシステム |
US8661913B2 (en) | 2008-11-17 | 2014-03-04 | National University Corporation Nagaoka University Of Technology | Method of measuring stress history and composite material containing cement as main component |
JP5352667B2 (ja) * | 2009-04-27 | 2013-11-27 | 新日鉄住金エンジニアリング株式会社 | 滑り構造、支承装置および免震構造物 |
JP5627882B2 (ja) * | 2009-12-17 | 2014-11-19 | 一般財団法人ファインセラミックスセンター | 構造物の歪・応力計測方法、歪・応力センサ、及びその製造方法 |
US9240115B2 (en) * | 2011-03-11 | 2016-01-19 | Toyota Jidosha Kabushiki Kaisha | Power transmission apparatus |
JP2013155062A (ja) * | 2012-01-27 | 2013-08-15 | Komaihaltec Inc | コンクリート構造物の表面被覆材とこれを用いた変状検知方法 |
KR101501525B1 (ko) * | 2013-04-18 | 2015-03-11 | 재단법인대구경북과학기술원 | 색 조절이 가능한 기계적 발광 복합필름 및 이의 색 조절방법 |
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- 2006-08-02 DE DE112006002049T patent/DE112006002049B4/de active Active
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JP5093478B2 (ja) | 2012-12-12 |
WO2007015532A1 (ja) | 2007-02-08 |
DE112006002049B4 (de) | 2013-09-19 |
US20090286076A1 (en) | 2009-11-19 |
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