報告書番号

W97021

タイトル（和文）

ＴＢＣ遮熱性能非破壊評価法の開発第１報ＴＢＣ遮熱性能評価手法の提案

タイトル（英文）

DEVELOPMENT OF NON-DESTRUCTIVE INSPECTION FOR THE PERFORMANCE OF THERMAL BARRIER COATING NO.1 NUMERICAL ANALYSIS FOR TBC THERMAL RESISTANCE DETECTING METHOD WITH TRANSIENT HEATING

概要 （図表や脚注は「報告書全文」に掲載しております）

本報告では，ＴＢＣしゃ熱性能非破壊測定法の提案，および成立性評価を目的とする。ＴＢＣしゃ熱性能劣化状態評価手法として，ＴＢＣ経年材の熱拡散率，肉厚変化に着目した非定常加熱法と，ＴＢＣ経年材の熱伝導率，肉厚変化に着目した準定常加熱法を考案し，各測定法に関する数値計算結果および現状の測定器性能より成立性を確認した。また，実機適用を念頭に，ＴＢＣしゃ熱性能劣化状態の検出感度および実機測定時の簡便性の観点から各測定法を評価した結果，非定常加熱法の適用が最も有効であると判断した。

概要 （英文）

THIS REPORT AIMES TO EVALUATE OUR PORPOSED NON-DESTRUCTIVE INSPECTION METHOD FOR THERMAL BARRIER COATING (TBC). WE PROPOSE THREE MEASURING METHODS:TRANSIENT HEATING,QUASI-STEADY LOCAL HEATING,AND QUASI-STEADY AREA HEATING. THE CHANGE IN THERMAL DIFFUSIVITY AND THICKNESS OF TBC CAUSED BY AGING IS ACCOUNTED FOR IN THE TRANSIENT HEATING METHOD,AND THE CHANGE IN THERMAL CONDUCTIVITY AND THICKNESS OF TBC CAUSED BY AGING DETERIORATION IS ACCOUNTED FOR IN THE QUASI-STEADY LOCAL HEATING AND THE QUASI-STEADY AREA HEATING METHODS. NUMERICAL ANALYSIS GAVE THE FOLLOWING RESULTS: 1. WHEN DETECTING THE CHANGE IN THICKNESS AND THERMAL CONDUCTIVITY CAUSED AGING DETERIORATION,THE TRANSINT HEATING AND QUASI-STEADY LOCAL HEATING METHODS SHOW A LARGE TEMPERATURE DIFFERENCE COMPARED TO NEW MATERIAL. 2. INCREASING THE HEATING POWER CAUSES A TEMPERATURE DIFFERENCE INCREMENT. 3. BASE METAL THICKNESS IRREGULARITY DOES NOT AFFECT DETECTION TEMPERATURE IN THE TRANSIENT HEATING METHOD,BUT DOES AFFECT IT IN THE QUASI-STEADY LOCAL HEATING AND QUASI-STEADY AREA HEATING METHODS. THE EFFECT OF BASE METAL THICKNESS IRREGULARITY MUST BE CORRECTED IN THE QUASI-STEADY LOCAL HEATING AND QUASI-STEADYAREA HEATING METHODS. THE TRANSIENT HEATING METHOD IS THE MOST EFFECTIVE METHOD BASED ON THE RESULTS OF NUMERICAL ANALYSIS AND MEASUREMENT SIMPLICITY.

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