实验表明几种岩石的强度、延性和脆性、体积变化和破坏前兆等与应力途径有关。
The experiments showed that the strength, brittleness and ductility, volume change and failure precursors are concerned with stress paths.
“在大多数工程材料中——比如,陶瓷(ceramics)——高强度都伴随着易脆性,”比勒说。
“In most engineered materials” — ceramics, for instance — “high strength comes with brittleness,” Buehler says.
本文介绍了焊接残余应力对金属结构的静强度、脆性断裂以及应力腐蚀开裂的影响。
The paper discusses over the influence exerted by welding residual stress on the static strength, brittle fracture and stress-corrosion cracking of metal structure.
采用混凝土断裂能试验研究了使用磨细矿渣和硅灰配制的高强度高性能混凝土的断裂脆性。
Fracture energy of concrete was measured for studying the fracture brittleness of the high performance concrete mixed ground granulated blastfurnace slag (GGBFS) and silica fume.
用纤维素酶和半纤维素酶处理漂白麦草浆可明显改善纸浆的性能,如滤水性、脆性、强度和白度等。
To treat bleached wheat straw pulp with cellulase and hemicellulase can remarkably improve such characteristics of the pulp as drainage, fragility, physical strength and brightness.
提出了获取脆性材料动态拉伸强度及弹性模量的实验步骤及相关记录数据的分析方法。
An experimental procedure and accompanying method for analyzing recorded data for deriving dynamic tensile strength and elastic modulus of brittle material is presented.
试验结果表明,道路混凝土中掺入纤维能明显降低混凝土的脆性,提高混凝土的抗折强度和耐磨性能。
Test and analysis results indicate that mixing fiber into road concrete can decrease the brittleness and promote the flexural strength and abrasion resistance.
结构钢材的韧性随温度降低而下降,其破坏形态也由塑性屈服向脆性断裂转变,构件的承载力也由强度控制变为材料的韧性控制。
The toughness of steel decreases as temperature drops, its breakage transfers from plasticity to brittleness and the loading capacity is controlled by the toughness, not the strength.
破坏发生时,钢板的受拉强度未得到充分利用,属脆性破坏,必须采取合理的锚固措施予以克服。
When the failure taking place, the strength of steel plates has not been fully used, it belongs to brittle failure and must be overcome with reasonably measure.
用电化学动电位极化的方法研究了缓蚀剂对高强度钢环境氢脆性能的影响。
The effect of inhibitor on hydrogen embrittlement of high strength steel has been studied by potentiodynamic polarization technique.
利用圆盘中心粘贴的应变片来测大理岩等脆性材料的动态拉伸强度,是一种简便高效的试验方法。
It is a simple, effective and ideal method to stick strain gages on the center of the sample to gain the dynamic tensile strength for brittle materials.
结果表明,在均质度较高的岩石试件中,岩石强度相对高,并且裂纹扩展表现出很强的脆性;
Numerical analysis results show that the peak strength of the rock specimens increases as homogeneity increases and crack propagates smoothly until brittle fracture takes place.
结果表明,FU的加入可明显改善PP低温脆性,提高冲击强度。
The results showed that the low temperature brittleness and impact strength of PP were improved observably by blend with FU.
纯弯段无腹筋的高强轻集料钢筋混凝土梁在破坏时表现出较强的脆性,延性要比同一强度等级普通混凝土梁略差。
And reinforced high-strength lightweight concrete beam is less ductile as compared with the normal-weight concrete beam of the same concrete strength.
拉伸实验结果表明随硬组分甲基丙烯酸甲酯含量的增加,抗拉强度增加,材料由橡胶向脆性塑性转变;
The results of tension tests show that the tensile strength increases and the materials are converted from a rubber to a plastics as the contents of PA increase.
采用过渡层法进行钛合金与不锈钢的焊接时,基本能够避免焊接材料之间脆性金属间化合物的大量生成,从而有效提高焊接接头的连接强度。
The intermetallics could be avoided effectively by using the method of transition layers between titanium alloy and stainless steel, and the tensile strength of welded joints is enhanced.
利用格利菲思强度准则和断裂力学原理求得了混凝土类脆性材料裂缝端部微裂缝区的边界方程。
A boundary 's equation of microcrack region near crack tip of such brittle materials as concrete has been obtained according to the Griffith' s criterion and fracture mechanics.
混凝土是一种脆性材料,具有较低的抗拉强度、韧性和抗冲击能力。
Concrete is one of the brittle materials, which has low tensile strength, poor toughness and poor impact resistance.
对脆性陶瓷材料来说,抗弯强度即为横向弯曲试验中样品断裂时的应力。
For the brittle ceramic materials, flexural strengths are determined by the stress at fracture in transverse bending tests.
结果表明,在声压较低时, 流体间的剪切张力使得红细胞的溶血率、渗透脆性、脂质过氧化水平随作用时间及作用强度增加缓慢增长;
Results demonstrate that ultrasound exposure at low sound intensities leads to slight increases in hemolysis, osmotic fragility and lipid peroxidation due to the effect of shear stress.
本文研究了粉煤灰、减水剂掺量与水灰比对粉煤灰道路混凝土抗压强度、脆性系数的影响。
The influences of flyash, water reducer and W/C on the strength and brittleness of flyash paving concrete were investigated.
但同时也存在粘接强度不高、脆性大、耐热性差等缺点。
But there are also some disadvantages of low adhesive strength, brittleness, heat resistance.
试验结果表明,可以从一次有效的载荷-位移记录中同时确定脆性岩石的弹性模量、拉伸强度和断裂韧度。
The experimental results show that the elastic modulus, tensile strength and fracture toughness of brittle rocks can be determined from a valid load-displacement record.
本文研究的结果对脆性材料强度指标选择和生产厂家控制材料质量方面有重要的参考价值。
The result of this work is important for to choose the strength index of brittle materials and to control the quality.
因此,由于高强混凝土的轴压下的脆性性质,横向加固的存在成为比正常强度混凝土同行更重要。
Hence, due to the brittle nature of HSC under axial compression, the presence of lateral reinforcement becomes more significant than in normal strength concrete counterparts.
养护条件,粗骨料最大粒径和硅灰对混凝土的强度,断裂性能和材料脆性都有一定影响。
The curing condition, the maximum size of coarse aggregate and silica fume have certain effects on the strength, fracture properties and brittleness of concrete.
介绍了硬脆性泥页岩稳定性评价的几种新方法——改进的热滚分散法、泥饼强度测试法及动滤失试验法。
New evaluation methods for fragile shale are introduced, including improved hot rolling test, filter cake strength tester, and dynamic filtration test.
两者相比,高温后砂岩的峰值强度、弹性模量和变形模量有所提高,两者受温度影响均以脆性破坏为主。
Compared with both of them, the peak-value strength, elastic modulus, and deformation modulus of sandstone after high temperature increase by a little and they are all brittle fractures.
随着碳含量的增加,其硬度和强度增加,但相应的塑性下降,脆性增加。
Along with the increase of the content of carbon, its hardness and strength increased, but the corresponding plastic drop, increase the brittle.
前两种为脆性断裂方式,热解炭基体的断裂应变是这类材料强度的控制因素。
The former two types are brittle ones, and the fracture strain of pyrolytic carbon matrix is the controlling factor of the strength.
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