Study on the internal damage evolution and strength of the mechanical pin joint of CFRP laminates under fatigue loading

• Project/Area Number: 18360407
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Aerospace engineering
• Research Institution: Kyushu University
• Principal Investigator: TAKAO Yoshihiro Kyushu University, 応用力学研究所, 教授 (30108766)
• Co-Investigator(Kenkyū-buntansha): WANG Wen-xue 九州大学, 応用力学研究所, 准教授 (40240569)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥11,490,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥1,890,000); Fiscal Year 2008: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2007: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2006: ¥3,300,000 (Direct Cost: ¥3,300,000)
• Keywords: 複合材料積層板 / 継手 / 疲労強度 / 損傷解析 / 限界損傷

Research Abstract

標準的複合材料積層板CFRP の機械継手の引張疲労試験を実施し, その疲労損傷機構を初めて明らかにした. 主に積層構成[0/45/-45/90]3s を使用したが, 積層構成を3Sから2S, [0/45/-45/90] から[90/45/-45/0], また複合材供給メーカを代えてもほぼ同様の結論が得られた. つまり, 静的破壊では繊維の急激な坐屈が破壊の起点であるが, 疲労では接触部の緩やかな圧縮崩壊損傷の進展が破壊の起点である. また, 疲労では接触部での摩擦の不安定性に起因して発生する繰り返し横荷重の役割が大きい.

Research Products

• [Journal Article] Bearing damage evolution of a pinned joint in CFRP laminates under repeated tensile loading (2009)
  • Author(s): Satoshi Seike, Yoshihiro Takao, Wen-Xue Wang & Terutake Matsubara
  • Journal Title: International Journal of Fatigue (in press)(reviewed)
• [Journal Article] Fatigue characteristics of metal impregnated C/C composites with slots for load transfer (2009)
  • Author(s): Masahiro Moriyama, Yoshihiro Takao, Wen-Xue Wang & Terutake Matsubara,
  • Journal Title: International Journal of Fatigue (in press)(reviewed)
• [Journal Article] Bearing damage evolution of a pinned joint in CFRP laminates under repeated tensile loading (2009)
  • Author(s): S. Seike, Y. Takao, W. X. Wang & T. Matsubara
  • Journal Title: International Journal of Fatigue JIJF 2225 Pages: 1-10
  • Peer Reviewed
• [Journal Article] Fatigue characteristics of metal impregnated C/C composites with slots for load transfer (2009)
  • Author(s): M. Moriyama, Y. Takao & W. X. Wang
  • Journal Title: International Journal of Fatigue JIJF 2228 Pages: 1-11
  • Peer Reviewed
• [Journal Article] Criterion for the final failure of a pin joint with bearing damage in CFRP laminates under cyclic tensile loading (2008)
  • Author(s): Satoshi Seike, Yoshihiro Takao, Wen-Xue Wang & Terutake Matsubara
  • Journal Title: Proceedings of the 13^<th> Japan/US CCM FAI-6(reviewed) Pages: 1-8
• [Journal Article] Fatigue and static damage of a pinned joint in CFRP (2008)
  • Author(s): Satoshi Seike, Yoshihiro Takao, Wen-Xue Wang & Terutake Matsubara
  • Journal Title: AIAA 2007-2409 (reviewed) Pages: 1-11
• [Journal Article] Criterion for the final failure of a pin joint with bearing damage in CFRP laminates under cyclic tensile loading (2008)
  • Author(s): S. Seike, Y. Takao & W. X. Wang
  • Journal Title: Proceedings of The US-Japan Conference on Composite Materials FAI-6 Pages: 1-8
  • Peer Reviewed
• [Journal Article] CFRPピン継手の疲労と準静的引張り負荷における強度と損傷進展の比較 (2007)
  • Author(s): 清家聡, 高雄善裕, 汪文学, 松原監壮
  • Journal Title: 日本複合材料学会誌 (査読付) Pages: 161-169
  • NAID: 10023982628
• [Journal Article] CFRPピン継手の疲労と準静的引張り負荷における強度と損傷進展の比較 (2007)
  • Author(s): 清 家聡、高雄 善裕、汪 文学
  • Journal Title: 日本複合材料学会誌 33 Pages: 420-426
  • NAID: 10023982628
  • Peer Reviewed
• [Journal Article] Fatigue and static damage of pinned joint in CFRP (2007)
  • Author(s): S.Seike, Y.Takao, W.X.Wang, T.Matsubara
  • Journal Title: AIAA Paper 2007-2268 Pages: 1-10
  • Peer Reviewed
• [Presentation] CFRP積層板機械継手の疲労損傷機構 (2008)
  • Author(s): 高雄善裕
  • Place of Presentation: 北九州
• [Presentation] Criterion for the final failure of a pin joint with bearing damage in CFRP laminates under cyclic tensile loading (2008)
  • Author(s): Satoshi Seike
  • Organizer: The 13^<th> Japan/US CCM
  • Place of Presentation: Tokyo
• [Presentation] CFRP積層板機械継ぎ手の疲労損傷進展機構 (2008)
  • Author(s): 高雄善裕, 清家聡, 汪文学
  • Organizer: 第50回構造強度に関する講演会
  • Place of Presentation: 西日本国際会議場, 小倉
• [Presentation] Failure Damage Evolution of a Mechanical Joint of Carbon Fiber Metal Laminates under the Bearing Failure Mode (2008)
  • Author(s): T. Matsubara, Y. Takao & W. X. Wang
  • Organizer: ACCM
  • Place of Presentation: 西日本国際会議場, 小倉
• [Presentation] Bearing damage evolution of a pinned joint in CFRP laminates under repeated tensile loading (2007)
  • Author(s): Satoshi Seike
  • Organizer: ICFC4
  • Place of Presentation: Kaiserslautern, Germany
• [Presentation] Load control to preserve the critical damage of bearing mode failure from additional damage evolution of a pin joint in quasi-isotropic CFRP laminates under tensile loading (2007)
  • Author(s): Yoshihiro Takao
  • Organizer: ATEM'07
  • Place of Presentation: Fukuoka
• [Presentation] Critical fatigue and quasi-static bearing damages of a pinned joint in both [0/45/-45/0]3s and [90/45/-45/0]3s CFRP laminates (2007)
  • Author(s): Satoshi Seike
  • Organizer: 16^<th> ICCM
  • Place of Presentation: Kyoto
• [Presentation] 表面層繊維方向がCFRP積層板ピン継手強度・損傷進展に与える影響 (2007)
  • Author(s): 高雄善裕
  • Organizer: 日本複合材料学会2007年度研究発表講演会
  • Place of Presentation: 東京
• [Presentation] Fatigue and static damage of a pinned joint in CFRP (2007)
  • Author(s): Satoshi Seike
  • Organizer: 48^<th> AIAA SSDM Conference
  • Place of Presentation: Hawaii, USA
• [Presentation] Bearing damage evolution of a pinned joint in CFRP laminates under repeated tensile loading (2007)
  • Author(s): S.Seike, Y.Takao, W.X.Wang, T.Matsubara
  • Organizer: International Conference on Fatigue of Composite Materials 4
  • Place of Presentation: 独・カイザースローテン工科大学
• [Presentation] 擬似等方性CFRPピンジョイントにおける疲労強度とその損傷進展 (2006)
  • Author(s): 清家聡
  • Place of Presentation: 長野