Study of High Temperature Fatigue Deformation at the Notch Root based on Digital Speckle Correlation Technique 应用数字散斑相关技术研究缺口根部高温疲劳变形
Fatigue deformation features of Fe-Cr alloy single crystals containing Cr-rich precipitates 含富Cr沉淀颗粒Fe-Cr合金单晶体的疲劳变形特征
Research Method of Shear Fatigue Deformation of Asphalt Mixture Based on Shear Capacity 基于抗剪性能的沥青混合料剪切疲劳变形研究方法
Based on the analysis of the test data, the quantitative principles of concrete fatigue deformation and the calculation method of fatigue strength are determined. 并在此基础上确定了疲劳变形定量化规律和疲劳强度计算方法;
For polycrystalline titanium after cold-rolling ( CR), the microstructure and the compressive residual stress before and after fatigue deformation have been respectively studied by transmission electron microscopy ( TEM) and X-ray diffraction ( XRD). 采用TEM,XRD技术研究了多晶纯钛滚压形变强化疲劳前后的显微组织特征和残余应力。
The mechanism of fatigue crack appear, the growth of crack and the pattern of crack coalescence are discussed. The influence of loading frequency and loading level on fatigue strength and fatigue deformation are studied. 探讨了疲劳裂纹萌生、扩展的机理,分析了加载频率、荷载水平对裂隙试样疲劳强度、疲劳变形(总变形和不可逆变形)的影响规律。
The results show that the oxidation peak temperature ( T1) is obviously affected by fatigue deformation, and the extent of influence of fatigue deformation on thermal stability varys with the composition of vulcanizates. 结果表明,氧化峰温(T1)明显受疲劳变形的影响,影响的大小因胶料所含组分的不同而异;
Study on the effect of fatigue deformation on the thermal oxidative stability of nr/ br blends by DSC method 用DSC研究疲劳变形对NR/BR并用硫化胶热氧稳定性的影响
Fatigue Deformation and Fracture in Mild Steel 低碳钢疲劳形变及断裂
Study of Fatigue Deformation Law of C-P Hybrid Fibre Concrete C-P混杂纤维混凝土疲劳变形规律研究
The laws of compressive fatigue strength and deformation are analysed based on the results of experiment. 在试验基础上,分析了双轴压混凝土的疲劳特性和变形规律;
Experimental Study on Fatigue Deformation of Plain Concrete under Multi-stage Constant Amplitude Loading 混凝土多级等幅疲劳的变形发展规律试验研究
Testing Study on fatigue deformation law of rock under cyclic loading 周期荷载作用下岩石疲劳变形特性试验研究
Fatigue deformation and fracture in quench-tempered low-carbon steel 淬火回火低碳合金钢的疲劳形变与断裂的电镜观察
Based on real time CT testing, primary testing study of fatigue failure and deformation mechanism of red sandstone has been completed under uniaxial compression condition. 基于对裂隙岩石的细观CT试验,对含有单一裂纹的贵溪红砂岩在单轴疲劳荷载作用下的损伤扩展机理和演化过程进行了初步的试验研究。
Fatigue deformation mechanism of zircaloy-4 at different heat treatment conditions 不同热处理状态Zr-4合金的疲劳变形机理探讨
TEM observation of the contact fatigue deformation layer showed that during contact fatigue of the composite coating, nanoparticles hindered the slippage of dislocations and restrained the plastic deformation and crack propagation, which resulted in higher contact fatigue life of the composite coating. 纳米颗粒在复合镀层接触疲劳失效过程中起到阻碍位错滑移的作用,从而抑制塑性变形和裂纹扩展,使复合镀层具有较高的接触疲劳寿命。
Characteristics of Microstructure in 18-8 Type Austenitic Stainless Steel under Low Cycle Fatigue Deformation 18-8型奥氏体不锈钢在低周疲劳变形下的微观组织特征
The fatigue deformation mechanism of zirconium is discussed finally. 最后讨论了纯锆的反复弯曲疲劳变形机理。
Low Cycle Fatigue Behavior and Deformation Mechanisms of Zirconium and Zircaloy-4 锆及锆合金的疲劳行为及其变形机理
The fatigue strength, deformation and stiffness of concrete in such stress states are analyzed. 分析了定侧压双轴压砼的疲劳强度、变形性能和刚度特性。
The comparative analyses of correlative physical parameters of concrete in static tension and tensile fatigue show that fatigue life and deformation modulus reduce largely because of lateral compression. 同时对静态受拉与受拉疲劳试验的相关物理量进行了比较分析,疲劳寿命和疲劳变形模量也因侧压的影响而有较大幅度的降低。
Systematic investigations on microstructure in 18-8 type austenitic stainless steel under low cycle fatigue deformation were made by TEM, including dislocation configurations in austenite, deformation twin, and deformation-induced martensite. 利用透射电镜系统地研究了18&8型奥氏体不锈钢在低周疲劳变形下的微观组织,包括奥氏体位错组态,形变孪晶和形变马氏体。
TEM Observation on Microstructure of Fatigue Deformation in Ti_3Al-Base Alloy Ti3Al基合金疲劳变形显微组织的透射电镜研究
By analyzing the development law and characteristics of fatigue deformation, a number of different fatigue deformation calculation theory are established. Through the comparison with the experimental data, applicability and advantages and disadvantages of each theory are analyzed. 分析疲劳变形的发展规律和特点,采用多个不同的疲劳变形计算方法,通过与试验数据进行比较,分析各计算方法的适用性和优劣点。
In the structure, due to the long-term effects of the load, resulting in fatigue, reduced deformation and bearing capacity, so in order to avoid damage caused by local buckling and therefore to strengthen the node. 在结构使用中,由于荷载的长期作用,导致构件疲劳、变形、承载能力下降,所以为了避免局部失稳而导致破坏因此对节点进行加强。
The research on fatigue performance and fatigue strength of concrete construction are based on the fatigue strength and deformation performance study of concrete materials. 混凝土类材料在循环荷载作用下的疲劳强度和变形性能是研究混凝土结构疲劳性能和疲劳强度的基础。
The damage of rock develops according to three-phases law and the main factors affecting fatigue deformation include stress level and initial damage. 岩石的损伤演化具有三阶段规律,而影响损伤发展的主要因素有应力水平以及初始损伤等。
Au-Sn solder has large strength, fine ant-oxidation, small melt point, low liquidity, excellent heat fatigue and creep deformation resistant. 金锡焊料本身强度高,抗氧化性能好,抗热疲劳和蠕变性能优良,熔点低,流动性好。