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- The evaluation of crack initiation life is directly affected bythe reliability of nondestructive testing. 检测方法的可靠性直接影响结构疲劳裂纹形成寿命估计值。
- The pre-straining prolonged the fatigue crack initiation life, and increased resistance coefficient and equivalent stress threshold of the fatigue crack initiation. 预应变可以延长疲劳裂纹形成寿命，提高疲劳裂纹形成的抗力系数和裂纹形成的当量应力门槛值；
- The U-notch specimens were used to investigate the fatigue crack initiation life of X60 pipeline steel after pre-tension straining with ductile deformation of 5%, 10% and 15%. 摘要采用U型缺口试样研究了X60管线钢经5%25、10%25和15%25的预拉伸应变后的疲劳裂纹形成寿命。
- The improved local stress-st rain method is introduced.Themechanical model and calculating method are estab lished to evaluate the crack initiation life of membranes. 引入改进的局部应力-应变法，建立计算膜片联轴器膜片疲劳裂纹形成寿命的模型和方法。
- The pre-straining prolonged the fatigue crack initiation life,and increased resistance coefficient and equivalent stress threshold of the fatigue crack initiation. 预应变可以延长疲劳裂纹形成寿命,提高疲劳裂纹形成的抗力系数和裂纹形成的当量应力门槛值;
- Analysis of Fatigue Crack Initiation Life of Submarine Structure 潜艇结构疲劳裂纹形成寿命的分析
- THE ESTIMATE METHOD OF FATIGUE CRACK INITIATION LIFE IN WELDED METAL 焊接金属疲劳裂纹萌生寿命估算方法的研究
- Study on estimate method of fatigue crack initiation life in welded metal 金属焊接接头疲劳裂纹萌生寿命估算方法的研究
- Prediction of crack initiation life of rectangular cross-section beam 矩形截面梁的疲劳裂纹形成寿命预估
- On Calculation Methods for Predicting Contact Fatigue Crack Initiation Life of Aero-Gear Tooth 航空齿轮接触疲劳裂纹萌生寿命预测方法的研究
- OPERATIONAL METHODS IN ENGINEERING FOR ESTIMATION OF FATIGUE CRACK INITIATION LIFE UNDER SPECTRUM LOADING 估算谱载下疲劳裂纹起始寿命的工程实用方法
- A SIMPLE AND PRACTICAL METHOD FOR ESTIMATION OF FATIGUE CRACK INITIATION LIFE UNDER SPECTRUM LOADING 一种估算谱载疲劳裂纹起始寿命的方法
- Modified Root-Mean-Square Method for Estimation of Fatigue Crack Initiation Life under Spectrum Loading 用改进的均方根法估算谱载下疲劳裂纹起始寿命
- Material Quality and Crack Initiation. 原料质量、及初始裂纹的寿命。
- fatigue crack initiation life 疲劳萌生寿命
- Crack initiation life 裂纹萌生寿命
- The fractography of the fatigue crack initiation displayed cleavage f... 裂纹形成的断裂为穿晶解理机制,预应变可导致更多的二次裂纹。
- Experiments demonstrate that leaf spring crack results from rust spot as fatigue crack initiation,and in order to improve spring life it must be to improve coating quality. 通过试验证明了锈点是导致钢板弹簧断裂的新的疲劳源,为提高弹簧的使用寿命必须提高其涂层质量。
- he conditional fatigue crack initiation lifes have been measured using rectangle notched specimens ofsteel 20CrMnMo under four point bending loads and the fatigue crack initation behaviors have ben studiedby microanalysis. 本文用四点弯曲加载法测定了20CrMnMo钢矩形缺口试样的条件疲劳裂纹萌生寿命，并用微观分析研究了疲劳裂纹的萌生行为。
- Crack initiation and propagation process in A356 aluminium alloy under impact load have been investigated. 研究了A356铝合金在冲击载荷作用下的裂纹萌生及其扩展过程。
