stone surface age

The crack initiation life curve was measured by the turning porallel to crack surface on specimen section after different fatigue cycles.

在JPM-1B型接触疲劳试验机上测定了水润滑条件下的接触疲劳失效寿命曲线,并以裂纹沿平行表面方向扩展为判断标准,通过解剖试样的方法测定了裂纹萌生寿命曲线。

Based on the research of mechanical performance, crack growth rates and crack growth life for 30CrMnSiNi2A and GC4 steel were analyzed statistically on the same crack length condition.

在分析30CrMnSiNi2A和GC4力学性能的基础上,在相同裂纹长度条件下,对两种材料的裂纹扩展寿命和裂纹扩展速率的统计特性进行了统计研究。

The tests of crack initiation life under the fighter spectra and crack growth life under the freighter spectra are conducted.

介绍了在战斗机谱载作用下的３０ＣｒＭｎＳｉＮｉ２Ａ和ＬＹ１２ＣＺ试件的裂纹形成寿命试验，以及在运输机谱载作用下的３０ＣｒＭｎＳｉＡ和ＬＹ１２ＣＺ试件的裂纹扩展寿命试验。

The assessment of the increase of crack growth life after hole cold expanding is addressed.

本文用含孔边穿透裂纹的冷胀孔、未胀孔剩余寿命之比来评价孔冷胀强化工艺延长裂纹扩展寿命的效果。

On the base of above expressions,the analytical relation between the crack initiation life and the concentrated stress without damage coupling effect is built by the damage evolution equatio.

在此基础上,根据由热力学原理导出的以损伤驱动力表示的损伤演化方程,给出裂纹形成寿命与载荷关系的解析表达式。

The tests of crack initiation life under the fighter spectra and crack growth life under the freighter spectra are conducted.

介绍了在战斗机谱载作用下的３０ＣｒＭｎＳｉＮｉ２Ａ和ＬＹ１２ＣＺ试件的裂纹形成寿命试验，以及在运输机谱载作用下的３０ＣｒＭｎＳｉＡ和ＬＹ１２ＣＺ试件的裂纹扩展寿命试验。

Analysis of Major Influencing Factors of Rolling Contact Fatigue Crack Initiation Life of Rails

影响钢轨疲劳裂纹萌生寿命的主要因素分析

The Defination and Probability Model of Low Cycle Fatigue Crack Initial Life for 16MnR Pressure Vessel Steel;

16MnR钢的低周疲劳裂纹萌生寿命及其概率统计模型的研究

Sensitivity Analysis of Mechanical Parameters of Rail to Fatigue Crack Initiation Life

钢轨材质参数对疲劳裂纹萌生寿命影响的敏感性分析

Crack defect promotes crack initiation and growth.

裂纹缺陷促进了裂纹的萌生和扩展.

BQUIVALENT LIFE METHOD FOR PREDICTING FCI LIFE EDER THE RANDM LOADING

估算谱载下疲劳裂纹起始寿命的等寿命法

A Study on Crack Tolerance of Coke Tower and Its Life Prediction

焦碳塔的鼓胀、裂纹容限及寿命预测

Fatigue life prediction of crack-like flaws in oil gas pipeline

油气管线裂纹型缺陷的疲劳寿命预测

CRACK GROWTH LIFE PREDICTION BASED ON FINITE ELEMENT METHOD

基于有限元方法的裂纹扩展寿命预测

Research of Crack Growth Life for Certain Helicopter's Main Blade

某型直升机主桨叶裂纹扩展寿命研究

Subsurface Crack Initiation and Propagation Mechanism in GCr15 Steel;

GCr15钢内部裂纹萌生和扩展机理的研究

Simulation for Short Fatigue Cracks Initiation of LZ50 Axle Steel for Railway Vehicles

LZ50车轴钢疲劳短裂纹萌生的数值模拟

Fatigue crack growth and fatigue life evaluation for welded steel bridge members with initial crack

具初始裂纹钢桥梁焊接构件疲劳裂纹扩展和疲劳寿命计算

A STUDY ON FATIGUE CRACK INITIATION AND SMALL CRACK GROWTH UNDER THE CYC LIC COMPRESSIVE LOAD CONDITION

压缩循环加载下缺口裂纹的萌生与小裂纹扩展规律研究

Crack Initiation Toughness and Crack Propagation Toughness of PA6/POE-g-MAH Blends in Notched Impact Tests

PA6/POE-g-MAH共混物缺口冲击的裂纹萌生韧性及裂纹扩展韧性

RESIDUAL LIFE ANALYSIS OF THE SKIM PANEL OF AH-24 WING INTEGRAL TANK WITH CRACKS

安—24机翼油箱含裂纹面板的剩余寿命分析

Research on Surface Cracks and Reliability of Residual Life in Sucker Rods;

抽油杆表面裂纹及剩余寿命的可靠性研究

Study on Crack Growth Life of Powder Metallurgy Superalloy Turbine Disk Containing Inclusions;

含夹杂粉末高温合金涡轮盘裂纹扩展寿命研究

The Numerical Simulation of Mandrel Fatigue Total Life and Crack Growth;

芯辊疲劳全寿命和裂纹扩展的数值模拟