Development of the high temperature evaluation method for interfacial damage of a thermal barrier coating system by resonance ultrasound spectroscopy

• Project/Area Number: 24560084
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Materials/Mechanics of materials
• Research Institution: Iwate University
• Principal Investigator: WAKI Hiroyuki 岩手大学, 工学部, 准教授 (30324825)
• Co-Investigator(Renkei-kenkyūsha): OGI Hirotsugu 大阪大学, 基礎工学研究科, 准教授 (90252626)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 遮熱コーティング / 弾性係数 / 損傷評価 / 共鳴超音波スペクトロスコピー / 高温 / はく離 / き裂

Outline of Final Research Achievements

A new nondestructive evaluation method of the damage in a thermal barrier coating (TBC) system was developed. The method used the apparent change in the elastic moduli of a TBC if damaged by resonance ultrasound spectroscopy. First, the changes in the apparent elastic moduli of various damages were calculate by FEM. It was found that the change in the in-plane elastic modulus if a surface crack occurred was significant, and the crack depth and length were able to be evaluated using the change. It was also confirmed experimentally.

Research Products

• [Journal Article] Evaluation of the Accuracy of Young's Moduli of Thermal Barrier Coatings Determined on the Basis of Composite Beam Theory (2014)
  • Author(s): H. Waki, A. Oikawa, M. Kato, S. Takahashi, Y. Kojima, F. Ono
  • Journal Title: Journal of Thermal Spray Technology Volume: Vol.23 Issue: 8 Pages: 1291-1301
  • DOI: 10.1007/s11666-014-0145-7
  • Peer Reviewed
• [Journal Article] Determination of Interfacial Fracture Toughness of Thermal Spray Coatings by Indentation (2013)
  • Author(s): Y. Yamazaki, M. Arai, Y. Miyashita, H. Waki, M. Suzuki
  • Journal Title: Journal of Thermal Spray Technology Volume: 22 Issue: 8 Pages: 1358-1365
  • DOI: 10.1007/s11666-013-9961-4
  • Peer Reviewed
• [Journal Article] 遮熱コーティングが基材の高温低サイクル疲労寿命に及ぼす影響 (2013)
  • Author(s): 脇 裕之，小林 明，石井徳章
  • Journal Title: 材料 Volume: 62 Pages: 125-130
  • NAID: 130003367128
  • Peer Reviewed
• [Journal Article] HVOF溶射による耐熱コーティングCoNiCrAlYの高温疲労特性 (2012)
  • Author(s): 脇 裕之，小林 明
  • Journal Title: プラズマ応用科学 Volume: 20 Pages: 120-125
  • NAID: 40019611256
  • Peer Reviewed
• [Presentation] プラズマ溶射CoNiCrAlYの内部摩擦の組織依存性 (2014)
  • Author(s): 瀧澤健介，脇 裕之，荻博次，小林明
  • Organizer: 日本機械学会 2014年度年次大会講演会
  • Place of Presentation: 東京電機大学（東京都足立区）
  • Year and Date: 2014-09-07 – 2014-09-10
• [Presentation] Temperature Dependence of Internal Friction in Thermal Barrier Coatings (2014)
  • Author(s): M. Saitoh, H. Waki, H. Ogi, A.Kobayashi
  • Organizer: 7th International Workshop on Plasma Application and Hybrid Functionally Materials
  • Place of Presentation: 香港理工大学（香港）
• [Presentation] Anisotropic Elastic modulus of TBC by Resonance Ultrasound Spectroscopy at High Temperature (2013)
  • Author(s): H. Waki, M. Saitoh, H. Ogi, A. Kobayashi
  • Organizer: Third Japanese- German TBC Workshop
  • Place of Presentation: ミュンヘン（ドイツ）
• [Presentation] DCB試験による遮熱コーティングの界面破壊靭性評価 (2013)
  • Author(s): 齊藤淳，脇裕之，小林明
  • Organizer: 日本機械学会M&M2013材料力学カンファレンス
  • Place of Presentation: 岐阜大学（岐阜市）
• [Presentation] 超音波共鳴法による遮熱コーティングの高温異方性弾性係数の焼結特性評価 (2012)
  • Author(s): 脇 裕之，荻 博次，小林 明
  • Organizer: 日本機械学会M&M2012材料力学カンファレンス
  • Place of Presentation: 愛媛大学（松山市）
• [Presentation] 共鳴超音波弾性計測に基づく遮熱コーティングの損傷評価の基礎研究
  • Author(s): 齊藤淳，長澤隆明，脇裕之，荻博次，小林明
  • Organizer: 日本機械学会東北支部第49期秋期講演会
  • Place of Presentation: 岩手大学（盛岡市）
• [Presentation] 溶射皮膜の弾性係数評価法－標準法から全方向係数評価まで－
  • Author(s): 脇裕之
  • Organizer: 日本溶射学会関東支部平成25年度第３回講演会
  • Place of Presentation: 首都大学東京（東京都千代田区）
  • Invited