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fatigue fracture characteristic
相关语句
  疲劳断裂特征
     Fatigue Fracture Characteristic Of Local Laser Modified 40Cr Steel
     激光局部强化40Cr钢的疲劳断裂特征
短句来源
     The results indicate that at high stress ratio (R =0.9) the static state tensile mechanics is the dominant factor in the fracture mechanisms. With the decrease of the stress ratio R, the fractograph presents evident fatigue fracture characteristic.
     结果表明 :(1)在高应力比 (R =0 9)下 ,静载拉伸力学因素在断裂机制中占主导地位 ,断口的大部分呈现静载断裂特征 ,随着应力比R的降低 ,断口呈现疲劳断裂特征 ;
短句来源
  疲劳损伤特性
     Basing on the method of approximate mechanics,the mechanical behavior and fatigue fracture characteristic of steel bridge asphalt mixture surfacing under repeated load was analyzed.
     采用力学近似方法,对钢桥面沥青混合料铺装层在循环荷载作用下的力学行为和疲劳损伤特性进行了理论分析.
短句来源
     Based on the method of damage-fracture mechanics,the mechanical behavior and fatigue fracture characteristic of asphalt mixture surfacing under repeated load was analyzed.
     基于损伤-断裂力学的方法就钢桥面沥青混合料铺装体系在循环荷载作用下的力学行为和疲劳损伤特性进行理论分析。
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After cyclic deformation, ε-martensites, deformation twins and planar dislocations in austenite martrix were observed in retaining ring steel. Dislocation pile-up and tangling around carbide particles were also observed after high degree of deformation. The fatigue fracture characteristics were fatigue striation, ductile microvoid, and quasi-cleavage-like fracture characteristic.

护环钢经循环变形后,组织中出现了ε马氏体和形变孪晶以及平面状分布的位错;变形量大时在碳化物粒子周围形成位错塞积和缠结。疲劳断裂特征为疲劳条纹、韧窝及类似准解理状形貌特征。

On the basis of experimental studies of Small Hole Relaxation Method, this paper analyzes theoretically the influences of plastic strains on the measurement of residualstresses of welded members and of some special bead welded narrow plates due to some factors, such as the stress concentration around the small holes, boring and paring strains andthe dimensions of pitches and margins. The results obtained are not only to the benifit of improving the measuring precision of SHRM and of expanding its application,...

On the basis of experimental studies of Small Hole Relaxation Method, this paper analyzes theoretically the influences of plastic strains on the measurement of residualstresses of welded members and of some special bead welded narrow plates due to some factors, such as the stress concentration around the small holes, boring and paring strains andthe dimensions of pitches and margins. The results obtained are not only to the benifit of improving the measuring precision of SHRM and of expanding its application, but also providereliable experimental basis for further stilely of the influences of restidual stresses on the carrying capacity and the fatigue fracture characteristics of welded members.

在小孔松驰法实验研究的基础上,本文从理论上分析了由于某些因素产生的塑性应变对测量焊接构件及特殊堆焊窄板残余应力的影响.诸如钻削应变、孔边应力集中及孔距边距尺寸等.本文研究成果不仅有利于提高小孔松弛法的测试精度及扩大其应用,而且为进一步研究焊接残余应力对焊接构件承载力和疲劳断裂性能的影响提供了可靠的实验依据.

The fatigue fracture characteristics of ZG0Cr13Ni5Mo and its weld metal were investigated by using CT testing method. The crack propagation rate in ZG0Cr13Ni5Mo is same as in the weld metal welded with HS135L MIG wire. But the crack propagation rate in weld metal welded with HS367L MIG wire is much lower. Load frequency has no distinct influence on crack propagation rate. Fatigue fracture analysis showed that ZG0Cr13Ni5Mo and the weld metal welded with HS135L have same fatigue fracture...

The fatigue fracture characteristics of ZG0Cr13Ni5Mo and its weld metal were investigated by using CT testing method. The crack propagation rate in ZG0Cr13Ni5Mo is same as in the weld metal welded with HS135L MIG wire. But the crack propagation rate in weld metal welded with HS367L MIG wire is much lower. Load frequency has no distinct influence on crack propagation rate. Fatigue fracture analysis showed that ZG0Cr13Ni5Mo and the weld metal welded with HS135L have same fatigue fracture resistance, and the weld metal welded with HS367L has higher resistance.

采用 CT紧凑拉伸试验,对 ZG0Cr13Ni5Mo钢及其焊缝金属进行了水下疲劳断裂性能的研究。结果表明, ZG0Cr13Ni5Mo钢与 HS135L焊缝金属的断裂扩展速率基本相同, HS367L焊缝金属具有较低的疲劳扩展速率,由此可见, HS367L焊缝金属具有更好的抗水下疲劳断裂性能;载荷频率对水下疲劳裂纹扩展速率没有明显的影响。

 
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