Rapid Repair Concept for CFRP Structures Monitored by Structural Health Monitoring Systems

• MINAKUCHI Shu

  Graduate School of Frontier Sciences, The University of Tokyo

• TAKAI Moto

  Graduate School of Frontier Sciences, The University of Tokyo

• OTAKE Haruka

  Graduate School of Frontier Sciences, The University of Tokyo

• TAKEDA Nobuo

  Graduate School of Frontier Sciences, The University of Tokyo

Bibliographic Information

Other Title

• 構造健全性診断技術との融合に向けたCFRP 構造の簡易急速補修技術に関する検討
• 構造健全性診断技術との融合に向けたCFRP構造の簡易急速補修技術に関する検討 : 損傷検知の不確定性の影響評価
• コウゾウ ケンゼンセイ シンダン ギジュツ ト ノ ユウゴウ ニ ムケタ CFRP コウゾウ ノ カンイ キュウソク ホシュウ ギジュツ ニ カンスル ケントウ : ソンショウ ケンチ ノ フカクテイセイ ノ エイキョウ ヒョウカ
• On Uncertainty of Detected-damage Information
• 損傷検知の不確定性の影響評価

Abstract

Even though carbon fiber reinforced plastic (CFRP) has remarkable mechanical properties, invisible or barely visible damage significantly degrades the strength of CFRP, restricting design space of CFRP aircraft structures. In this context, several structural health monitoring (SHM) technologies have been developed. If detected damage can be repaired by using rapid cure CFRP patch immediately after its occurrence, CFRP structures can be designed to tolerate larger damage, and thus more lightweight and adaptable aircraft structures may be realized. However, damage size, position, and type estimated by SHM systems are not absolutely accurate. Hence, this study experimentally and numerically investigated effects of the uncertainty about detected-damage information on the strength of repaired parts. Simulated impact or lightning damage was introduced in strip specimens, and tensile tests were conducted using them after repairing. It was shown that the strength requirement of the repaired part can be fulfilled by deciding the size of the CFRP repair patch in consideration of the uncertainty about the damage information. Furthermore, required capability of an impact damage detection system combined with the rapid repair method was identified.

Journal

• Materials System

  Materials System 30 (0), 47-52, 2012

  Materials System Research Laboratory, Kanazawa Institute of Technology

Keywords

• CFRP
• Structural Health Monitoring
• Impact Damage
• Lightning Damage
• Repair
• Design

Details

• CRID: 1390850092193561600
• NII Article ID: 40019240324
• NII Article ID: 130007987271
• NII Book ID: AN00027831
• DOI: 10.34401/zairyosystem.30.0_47
• ISSN: 24359734
• ISSN: 02866013
• NDL BIB ID: 023603974
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I023603974
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed