Development of non-destructive inspection and life extension methods using vibration mode change caused by material damage

• Project/Area Number: 24K07235
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 18010:Mechanics of materials and materials-related
• Research Institution: Okayama University
• Principal Investigator: 坂本 惇司 岡山大学, 環境生命自然科学学域, 助教 (50752052)
• Project Period (FY): 2024-04-01 – 2028-03-31
• Project Status: Granted (Fiscal Year 2024)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2027: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000); Fiscal Year 2026: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2025: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000); Fiscal Year 2024: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: 振動疲労 / 振動モード / き裂 / 非破壊検査 / 長寿命化

Outline of Research at the Start

本研究では，振動時の材料損傷による振動モードの変化（固有振動数の低下および振動モード形状の変化）を応用した非破壊検査手法および長寿命化手法を開発し，振動を受ける材料の高信頼性化および長寿命化を目指す．