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1. WO2009044745 - FATIGUE TESTING DEVICE

Publication Number WO/2009/044745
Publication Date 09.04.2009
International Application No. PCT/JP2008/067766
International Filing Date 30.09.2008
IPC
G01N 3/32 2006.01
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
G01N 3/34 2006.01
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
34generated by mechanical means, e.g. hammer blows
CPC
G01N 2203/0021
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
0014Type of force applied
0021Torsional
G01N 2203/0073
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
0069Fatigue, creep, strain-stress relations or elastic constants
0073Fatigue
G01N 2203/0676
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
02Details not specific for a particular testing method
06Indicating or recording means; Sensing means
067Parameter measured for estimating the property
0676Force, weight, load, energy, speed or acceleration
G01N 3/38
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
38generated by electromagnetic means
Applicants
  • 国際計測器株式会社 KOKUSAI KEISOKUKI KABUSHIKI KAISHA [JP]/[JP] (AllExceptUS)
  • 田代 和義 TASHIRO, Kazuyoshi [JP]/[JP] (UsOnly)
  • 松本 繁 MATSUMOTO, Sigeru [JP]/[JP] (UsOnly)
  • 宮下 博至 MIYASHITA, Hiroshi [JP]/[JP] (UsOnly)
  • 村内 一宏 MURAUCHI, Kazuhiro [JP]/[JP] (UsOnly)
Inventors
  • 田代 和義 TASHIRO, Kazuyoshi
  • 松本 繁 MATSUMOTO, Sigeru
  • 宮下 博至 MIYASHITA, Hiroshi
  • 村内 一宏 MURAUCHI, Kazuhiro
Agents
  • 松岡 修平 MATSUOKA, Shuhei
Priority Data
2007-25800401.10.2007JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) FATIGUE TESTING DEVICE
(FR) DISPOSITIF D'ESSAI DE FATIGUE
(JA) 疲労試験装置
Abstract
(EN)
Provided is a fatigue testing device which can acquire such an amplitude of the angle of an axis of rotation of a servomotor automatically and quickly as to be set when a test is done with the fluctuation widths of a force to be applied to a work being adjusted constant. The fatigue testing device comprises deformation detecting means for measuring the deformation of the work, force measuring means for measuring the magnitude of the force to be applied to the work, spring constant calculating means for calculating the spring constant of the work, while increasing the amplitude of the angle of the rotation axis of the servomotor gradually, on the basis of the measurement results of the deformation detecting means and the force measuring means, and control means for controlling the servomotor on the basis of the spring constant calculated by the spring constant calculating means, so that the amplitude of the magnitude of the force to be applied to the work may be a predetermined magnitude.
(FR)
L'invention porte sur un dispositif d'essai de fatigue qui peut acquérir une amplitude de l'angle d'un axe de rotation d'un servomoteur de manière automatique et rapide de façon à être réglé lorsqu'un essai est fait avec les largeurs de fluctuation d'une force devant être appliquée à une pièce qui sont ajustées pour être constantes. Le dispositif d'essai de fatigue comprend des moyens de détection de déformation pour mesurer la déformation de la pièce, des moyens de mesure de force pour mesurer la grandeur de la force devant être appliquée à la pièce, des moyens de calcul de constante de ressort pour calculer la constante de ressort de la pièce, tout en augmentant progressivement l'amplitude de l'angle de l'axe de rotation du servomoteur, sur la base des résultats de mesure des moyens de détection de déformation et des moyens de mesure de force, et des moyens de commande pour commander le servomoteur sur la base de la constante de ressort calculée par les moyens de calcul de constante de ressort, de telle sorte que l'amplitude de la grandeur de la force devant être appliquée à la pièce peut être une grandeur prédéterminée.
(JA)
ワークに加える力の変動幅を一定に揃えて試験を行う際に設定されるべきサーボモータの回転軸の角度の振幅を自動的且つ速やかに得ることのできる疲労試験装置を提供する。 疲労試験装置が、ワークの変形量を計測する変形量検出手段と、ワークに加えられる力の大きさを計測する力計測手段と、サーボモータの回転軸の角度の振幅を徐々に増加させながら、変形量検出手段及び力計測手段の計測結果に基づいて該ワークのばね定数を演算するばね定数演算手段と、ばね定数演算手段によって演算されたばね定数に基づいて、ワークに加えられる力の大きさの振幅が所定の大きさとなるように、サーボモータを制御する制御手段とを有する。
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