通过加载和卸载过程中所得到磁声发射强度的变化规律,可用以评估材料中微观损伤及残余应力。
The intensities of MAE have been measured as a function of the stress during loading and unloading, which can be used to evaluate the micro-damage and residual stress in ferromagnetic materials.
本文从微观统计的损伤理论出发,建立了腐蚀混凝土单轴受压本构模型,与试验结果较符合。
Beginning with the damage theory of micro-statistics, the constitutive model of corroded concrete under uniaxial compression is established which is proved by the experimental outcomes.
通过力学参数测量和微观观察研究了初始损伤对钢的延性起裂韧性影响。
By using measurement of mechanical parameters and microscopic observation, the effect of initial damage on the ductile fracture initiation toughness of steel was investigated experimentally.
用慢正电子湮没等分析技术研究了辐照损伤的微观机制。
The microscopic mechanism of irradiation damage of Al film reflector is studied by the slow positron annihilation technique and X-ray diffraction.
试样的微观断口分析显示了在高温应变疲劳试验中同时存在疲劳、蠕变和氧化损伤。
The results show that fatigue, creep and oxidation damage always develops simultaneously during low cycle fatigue at high temperature.
并从微观分析到宏观现象,由模糊概率测度思想提出了岩石损伤累积方程。
Then a rock damage evolutional equation was proposed by the authors based on theory of fuzzy probability measurement, and on micro-analysis and macro-observations.
针对常用耐磨材料在磨损工况中的损伤特点,总结用于这类工况材料应具备的微观组织及各组成相的性能特点。
According to the worn characteristics of common wear-resistant material under normal condition, microstructure and metallurgical structure of this kind of materials have been summarized in detail.
提出了一种描述岩石、混凝土类材料断裂损伤过程区的细观力学模型,用于分析材料的非线性断裂的微观机理。
The cracking mechanism based on non linear fracture model for rock concrete materials is proposed and micro mechanical model for fracture process zone (FPZ) established.
用宏观与微观相结合的方法研究焊接接头疲劳损伤演变规律。
Based on the macroscale and microscale mechanics method, a research on fatigue damage evolution of welded joint is conducted.
通过对轧后铝板表面的扫描电子显微观察,就冷轧铝板表面损伤进行了探讨。
Surface damage of cold rolled aluminum strip was investigated by observation of roiled surface with a scanning electron microscope.
分析了该材料在低周疲劳损伤的微观行为。
The damage micro behavior of low cycle fatigue of pure Titanium BT1-0 is analyzed as well.
方法应用ESEM观察分析不同锐器、钝器及致伤方式形成的毛发机械性损伤的微观形态特征。
Method ESEM was used to image and analyze the morphological characterizations of the physical damaged hairs, which caused by different sharp or blunt instruments and with different manners.
通过考虑材料微观塑性损伤,定量研究了焊接接头中强度匹配、试件几何形状对接头抗延性裂纹扩展行为的影响。
The effects of strength mis-matching and specimen geometry on the resistance behavior to ductile crack growth for welded joint were conducted by 3-D FE analysis considering the micro-plastic damage.
文章从损伤变量定义的方法入手,讨论了基于宏微观理论的损伤变量定义方法及其相应的损伤模型。
From the beginning of the definition of the damage variable, the definition methods of damage variable and their according damage models based on micro - and macro-theory.
环境因素对导电性能的削弱作用,源于相应过程中导电涂层的微观结构损伤。
The negative effect of environmental factors on conductivity is attributed to the micro-damages occurred within the microstructures of the coatings.
在此基础上提出一种新型的损伤参量,该损伤参量结合了剪应力功的概念和疲劳破坏的微观机制。
Based on this a new damage parameter, which combines shear stress work and micro-mechanism is provided.
目的探讨毛发枪弹损伤微观形态与射击距离之间的关系。
Objective to study the relationship between the microtopography of the gunshot damaged hair and the shooting distance.
从微观统计的角度出发,通过岩石细观力学的分析、综合,修正前人的研究成果,从而建立温度—应力耦合下的盐岩损伤方程。
Based on previous studies and with the relation of statistical mechanics and fractal rock mechanics, the damage formulation of the coupled damage of temperature and mechanics is deducted.
这一关系的确立,为从微观角度研究奥氏体钢的蠕变损伤提供了一种判断依据。
The establishment of the relationship would provide us a new judging rule used in researching creep damage of austenite steel from the...
对该器件进行显微观测,在光敏元上没有发现损伤,但在器件的栅极上发现了明显的激光引起的损伤痕迹。
According to the micro-analysis of CCD, it is found that the damage does not take place at the light activated elements but at the grid electrode of the device.
探讨AD病人脑白质微观结构改变与认知功能损伤之间的关系。
To evaluate the relationship between microstructure changes of white matter and the cognitive impairment in AD patients.
探讨AD病人脑白质微观结构改变与认知功能损伤之间的关系。
To evaluate the relationship between microstructure changes of white matter and the cognitive impairment in AD patients.
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