Fractal characterization of material fracture of waste printed circuit boards
废弃电路板材料断口的分形表征
Crack mechanism and fracture design of ductile material;
延性材料开裂机理及抗断设计
Comparatively study on various crack formation criteria of ductile material;
延性材料不同断裂准则的对比研究
The variation of void number density distribution,the relation between the variation and the stress history in damage evolution of spallation of ductile materials and the space distribution of void number were analyzed numerically and qualitatively.
用数值方法定性地分析了延性材料损伤过程中孔洞数密度分布的变化情况,及其与材料中应力变化过程之间的关系,以及孔洞数目在空间上的分布情况。
The general description of dynamic fragmentation developed by Grady[1] is used to predict the nominal fragment size of ductile materials under high-speed loading.
采用Ｇｒａｄｙ发展的一种动态崩落的一般描述方法，考虑了Ｈｅｒｔｚｂｅｒｇ对崩落过程的塑性修正，借助于不同的基体材料的等效应力假定，给出了考虑粘性（应变率）效应的强冲击载荷下延性材料的动态崩落尺寸与孔隙度的定量关系。
Fracture-Surface Fractal Dimension of PP/Diatomite Composites and Its Relation to Impact Strength
PP/硅藻土复合材料断口分形维数及其与冲击强度的关系
This paper discuesses the application and researching development of the fractal theory on the science of materials. It introduces the methods of fractal measurement and new researches on fractal measurement.
阐述了分形理论在材料科学方面的发展和应用,介绍了测定材料断口分形维数的几种方法和进展。
INTERLAMINAR TENSILE RUPTURE AND FRACTURE ANALYSIS FOR CF/EPOXY MATERIALS
碳/环氧复合材料层间拉伸断裂与断口分析
The fracture of composites assumes toughness dimple.
复合材料的拉伸断口为解理与韧窝混合断裂.
With the increase of graphite content, the bending frature morphology changes gradually from dimple to cleavage.
随石墨含量的增加，材料的弯曲断口由韧窝向解理，沿晶断口过渡。
Investigation on the Fracture and Interface of HIP C/AI Composites
热等静压碳/铝复合材料的断口和界面的研究
Analysis of Oligopoly Pricing Game of Chinese Bulk Raw Material Import
中国大宗原材料进口价格垄断因素的博弈分析
SINGLE NOTCHED TENSILE FRACTURE OF PA6/CaCO_3 COMPOSITE
PA6/CaCO_3复合材料的单边缺口拉伸断裂研究
Such fracture leads to the increase of fracture area and enhances mechanical properties of the steel.
这种断裂方式使断口表面积增加,显著提高了材料的力学性能。
The toughness, fractograph and microstructure of the failed die specimens have been examined and analysed.
检测了失效模具材料的微观组织、击韧性和断口形貌。
The Microstructural Characteristics and the Morphology of Fracture Surface of Metal/Metal Functionally Gradient Material;
金属/金属梯度功能材料的微观组织特征及断口的研究
Impact Characteristics at Elevated Temperature and Fracture Analysis of TiC Particle Reinforced Fe Matrix Composites
TiC颗粒增强铁基复合材料高温冲击特性及断口分析
Study on Relationship Between Impact Strength and Fracture Surface Fractal Dimension of PP/Nano-CaCO_3 Composites
PP/纳米碳酸钙复合材料冲击强度与断口表面分维关系的研究
Inspection method for steel work fractures
GB/T1814-1979钢材断口检验法
fracture micromechanics of polymer materials
聚合材料断裂微观力学
filter for dust respirators
防尘口罩用过滤材料
Technical and Scientific Materials Import Division
技术和科学材料进口司(科技材料进口司)
A therapeutic or protective material applied to a wound.
敷料敷在伤口的治疗药物或保护材料