等二軸疲労のための膜圧式疲労試験装置の開発
スポンサーリンク
概要
- 論文の詳細を見る
A testing method for investigating fatigue strength under equi-biaxial stress/strain condition was developed. In this method, the equi-biaxial stress condition was achieved by applying pressure on the surfaces of a disc-type specimen, for which the disc edge was constrained by supporting jigs. Air pressure was used to apply the cyclic loading and the failure of the specimen was determined by detecting the crack penetration of the specimen thickness. This method allows application of the cyclic equi-biaxial stress without a complex testing apparatus or a complex controlling system such as the testing system using the cruciform or tubular specimens, conventionally used for the fatigue test under the equi-biaxial stress condition. After developing the testing system, the configuration of the disc-type specimen was designed by finite element analysis so that a crack would be initiated at the center of the specimen. Then, carbon steel (SS400 in JIS) specimens were subjected to the fatigue test. The developed system was demonstrated to be able to initiate a fatigue crack at the center of the specimen and to detect the specimen failure successfully. The test results showed that the fatigue lifetime under equi-biaxial stress was longer than that under uniaxial stress for the same Von Mises equivalent strain range.
- 公益社団法人 日本材料学会の論文
著者
関連論文
- SM490鋼の弾塑性破壊じん性に及ぼす塑性ひずみの影響
- 複数き裂の相互作用を考慮した進展予測方法（長さの異なる表面き裂の繰返し引張および曲げ荷重下での進展）
- EBSDによる低サイクル疲労損傷の観察（SUS316鋼およびSTS410鋼の微視組織的変化）
- 変動荷重下における316ステンレス鋼の疲労寿命予測（寿命の支配因子と2段2重試験における損傷評価）
- 外表面ひずみ測定による内表面き裂の成長モニタリング（その２：多点ひずみ測定法による疲労き裂進展のモニタリング）
- 外表面ひずみ測定による内表面き裂の成長モニタリング（その１：多点ひずみ測定法の提案）
- 近接した軸方向き裂に対する破壊評価のための合体基準
- Damage Measurement of Structural Material by Electron Backscatter Diffraction (Quantification of Measurement Quality toward Standardization of Measurement Procedure)
- 316ステンレス鋼の疲労強度に対する平均応力効果
- Damage Assessment of Low-Cycle Fatigue by Crack Growth Prediction (Development of Growth Prediction Model and Its Application)
- Effect of Plastic Strain on Elastic-Plastic Fracture Toughness of SM490 Carbon Steel (Assessment by Stress-Based Criterion for Ductile Crack Initiation)
- Limit Load Analysis Method for a Pipe with an Axial Shallow Flaw
- EBSD解析によるステンレス鋼の疲労損傷検出（TEM観察との比較）
- クラス2, 3配管に対する弾性塑性破壊力学評価のための荷重割増し係数（Z係数）
- EBSD解析によるステンレス鋼の疲労損傷検出（結晶粒界に着目した解析）
- 3次元デジタル画像相関法による溶接部における不均一強度分布の同定
- 等二軸疲労のための膜圧式疲労試験装置の開発