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剪切强度

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The seismic retrofit included column jacketing, as well as wrapping of the bent cap and bent cap-column joints for confinement, flexural, and shear strength increase.

在抗震加固,包括列护套,以及弯曲的弯曲帽帽和包装柱接头的监禁,弯曲和剪切强度的增加。

The results show that, Au-19.25Ag-12.80Ge brazing alloy is better, its melting temperature range is 446.76494.40 ℃, and the temperature interval between the solidus and the liquidus is 47.64 ℃. When the brazing temperature is in the range of 510550 ℃, the alloy has a good spreadability and wettability with Ni. Interface structure observation reveals that there is one continuous intermetallic layer between the brazing alloy and the base metal Ni when welding. X-ray energy spectrum analysis results show that the intermetallic layer is Ge3Ni5, and because of its brittleness, the overthick intermetallic layer will decrease the shear strength of the welding joint, therefore, the welding technology should be controlled so as to gain an ideal welding interface structure.

研究结果表明:Au-19.25Ag-12.80Ge合金的性能较好,其熔化温度范围为446.76~494.40 ℃,结晶温度区间为47.64 ℃;焊接温度在510~550 ℃范围内时,Au-19.25Ag-12.80Ge钎料合金与Ni基体具有良好的铺展性和润湿性,焊接时钎料合金与Ni基体之间形成了一条连续的金属间化合物层,能谱分析表明该金属间化合物层为Ge3Ni5,由于该化合物较脆,过厚的金属间化合物层使焊接接头的剪切强度下降,故应适当控制焊接工艺以获得理想的焊接界面组织。

The shredding of agro-residues, such as corn stalk, straw, wood sawdust and other herbaceous biomass, were investigated in this dissertation. According to the machinery mechanics of shredding, the components, shearing strength and pressive strength of the biomass were analysed in theory, which played a critical role during the shredding process. And the powder was examined by Scanning Electron Microscopy. It was founded that shearing,splitting and grinding force were appropriate for shredding biomass. The results also showed that primary shredding was the bulk shredding model, which was mainly affected by shearing and splitting force, therefore the curly knife and the straight knife were useful; while the fine shredding was the surface shredding model, affected by splitting and grinding force, and the straight knife useful.

本文以农林废弃生物质为研究对象,结合机械力破碎基础理论,从影响其破碎的化学组分和剪切强度、抗压强度等力学角度进行了理论研究,并运用扫描显微镜对破碎产物的微观结构进行了实际分析,结合二者得出如下结论:最适合生物质的施力方式为剪切力、劈碎力和磨削力;生物质粗破碎为体积破碎,主要受剪切力和劈碎力作用,刀片宜设计成弯口刀和单面直刃刀;细破碎为表面破碎,主要受剪切力和磨削力作用,刀片宜设计成双面直刃刀。

Moreover, the effects of strain-rate history on its constitutive relation under torsion load were firstly researched by means of interrupted load tests at different temperatures and prestrain rates.

在给定应变率下,其剪切强度随温度的升高而降低。

The results indicate that,under a given shear rate,the retation of apparent viscosity on temperature can be well described by the Arrhenius Law The Herschel-Bulkley model is used to fit the date rheological parameters that exhibit regularity with the change of the temperature.

粘度是水煤浆最重要的流变性,而煤浆浓度、煤浆粒度级配、煤种、煤浆温度、添加剂和剪切强度等对水煤浆的粘度特性具有重要影响,因而一直是国

One of the reasons for this is that the bearing capacity of the footing increases due to the increase of undrained shear strength with depth and the presence of a hard stratum within a finite depth.

引起这一不同的原因之一,是立足的承载力增加剪切强度的增加和深度、开挖的坚硬地层在有限的深度。

The fast setting adhesive(HT-88)for GFRP was compounded from the prepolymer,low molecular polyamide,phenol aldehyde epoxy resin,bisphenol F type epoxy resin,liquid carboxylated butadieneacrylonitrile rubber,promotor,diluent and fillers.Its pot life,gelling time (at 60 ℃),glass transition temperature and shearing strength for bonding the unsaturated polyester GF...

该预聚物与低分子聚酰胺、酚醛环氧树脂、双酚F环氧树脂、液体羧基丁腈橡胶、促进剂、稀释剂、填料等复配的快固玻璃钢胶粘剂(HT - 88),在室温下的适用期为 30~ 4 0min ,6 0℃的凝胶时间为 10min ,玻璃化温度 16 0℃,粘接不饱和聚酯玻璃钢的剪切强度为 5~ 7MPa。

Lightweight fills of sand-EPS beads were formed by blending sands with EPS beads in proportions. They could be used as lightweight geomaterials/fills suitable for various infrastructures, e.g., embankments, backfills and replacing materials. To study their deformation and shear strength behavior could help understand their mechanical properties and determine the ground deformation and stability in the fields.

砂-聚苯乙烯颗粒轻质填料是由工程标准砂和超轻质聚苯乙烯颗粒按一定质量配比均匀混合而成的土工合成材料,研究其变形和剪切强度特性是掌握其工程力学特性的重要内容,也是解决实际工程中变形和稳定的重要依据。

The purpose of this study was to evaluate the shear bond strength between porcelain and electroformed copings after different surface treatments, with comparison of Ni-Cr alloys, to explore the bonding mechanism through observing the electroformed coping surface and interface of metal-ceramic by SEM and EDS analysis. It will provide the basis for clinical application. PartⅠEffects of different surface treatments on bond strength of porcelain fused to eleetroformed copings Materials and Methods: Forty-five cylindrical Ni-Cr alloys were made, and gold copings were deposited on them and divided into 5 groups randomly.

本实验拟测量金沉积基底几种不同表面处理后的金瓷剪切强度,并与Ni-Cr合金进行比较;通过对不同表面处理后的金沉积基底、金瓷界面进行扫描电镜观察和能谱分析,探讨不同表面处理对金沉积金瓷结合的影响,为金沉积烤瓷修复体的临床应用提供参考依据。

Different surface treatments were taken on round gold surface, including no treatment, 50μm Al_2O_3 sand blasting, 110μm Al_2O_3 sand blasting, gold bonder applying after 50μm Al_2O_3 sand blasting, gold bonder applying after 110μm Al_2O_3 sand blasting, and the same nine Ni-Cr alloys were cast as contrast, the gold copings and Ni-Cr alloys were both received two layers of opaque and two layers of body porcelain. Shear tests were performed in a universal testing machine. After loading the sections were examined by SEM and EDS analysis.

第一部分金沉积基底不同表面处理对金瓷剪切强度的影响材料与方法:制作直径4.0 mm,高度为8.0 mm的圆柱形Ni-Cr合金试件45个,表面电镀形成金沉积帽状基底,随机平均分成5组,分别为表面未处理组、50μm、110μm Al_2O_3喷砂组、50μm Al_2O_3喷砂+金黏结剂组、110μm Al_2O_3喷砂+金黏结剂组;另铸造同样规格的Ni-Cr合金试件9个,作为对照。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。