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1. WO2006006412 - FATIGUE CRACK GROWTH CURVE ESTIMATION METHOD, ESTIMATION PROGRAM, AND ESTIMATION DEVICE

Publication Number WO/2006/006412
Publication Date 19.01.2006
International Application No. PCT/JP2005/012046
International Filing Date 30.06.2005
IPC
G01N 3/32 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
3Investigating strength properties of solid materials by application of mechanical stress
32by applying repeated or pulsating forces
CPC
G01N 2203/0064
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2203Investigating strength properties of solid materials by application of mechanical stress
0058Kind of property studied
006Crack, flaws, fracture or rupture
0062Crack or flaws
0064Initiation of crack
G01N 2203/0066
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2203Investigating strength properties of solid materials by application of mechanical stress
0058Kind of property studied
006Crack, flaws, fracture or rupture
0062Crack or flaws
0066Propagation of crack
G01N 3/32
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
3Investigating strength properties of solid materials by application of mechanical stress
32by applying repeated or pulsating forces
Applicants
  • 株式会社産学連携機構九州 KYUSHU TLO COMPANY, LIMITED [JP]/[JP] (AllExceptUS)
  • 豊貞 雅宏 TOYOSADA, Masahiro [JP]/[JP] (UsOnly)
Inventors
  • 豊貞 雅宏 TOYOSADA, Masahiro
Agents
  • 加藤 久 KATO, Hisashi
Priority Data
2004-20393809.07.2004JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) FATIGUE CRACK GROWTH CURVE ESTIMATION METHOD, ESTIMATION PROGRAM, AND ESTIMATION DEVICE
(FR) PROCÉDÉ D’ESTIMATION DE LA COURBE DE CROISSANCE DE LA FISSURATION PAR FATIGUE, PROGRAMME D’ESTIMATION ET DISPOSITIF D’ESTIMATION
(JA) 疲労き裂成長曲線の推定法、推定プログラムおよび推定装置
Abstract
(EN) There are provided a fatigue crack growth curve estimation method, an estimation program, and an estimation device capable of strictly estimating the detail of the metal fatigue end and the crack growth detail. The fatigue crack growth curve estimation device (1) uses a first calculation means (11), second calculation means (12), third calculation means (13), fourth calculation means (14), and fifth calculation means (15) to strictly estimate the detail of growth of a crack generated and growing in a first crystal particle while omitting a calculation on the load pair not contributing to growth of the crack.
(FR) Il est fourni un procédé d’estimation de la courbe de croissance de la fissuration par fatigue, un programme d’estimation et un dispositif d’estimation susceptible d’estimer strictement le détail de la fin de la fatigue du métal et le détail de la croissance de la fissuration. Le dispositif d’estimation de la courbe de croissance de la fissuration par fatigue (1) utilise un premier moyen de calcul (11), un deuxième moyen de calcul (12), un troisième moyen de calcul (13), un quatrième moyen de calcul (14), et un cinquième moyen de calcul (15) pour estimer strictement le détail de la croissance d’une fissure générée et la croissance d’une première particule de cristal tout en omettant un calcul de la paire de charge qui ne contribue pas à la croissance de la fissuration.
(JA)  ゼロの大きさのき裂から連続的にき裂が成長していく現実的な現象に従って、金属の疲労寿命とき裂成長の詳細な様子を厳密に推定することが可能な疲労き裂成長曲線の推定法、推定プログラムおよび推定装置を提供する。 本発明の疲労き裂成長曲線の推定装置1は、第1の演算手段11、第2の演算手段12、 第3の演算手段13、第4の演算手段14、第5の演算手段15により、き裂成長に寄与しない荷重対については計算を省きながら、最初の結晶粒内から発生・成長するき裂の成長の詳細な様子を厳密に推定する。
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