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Effect of CuO Particle Size on the Microstructure Evolution of Al2O3P/Al Composites Prepared Via Displacement Reactions in the Al/CuO SystemGe Zhao,Zhi-Ming Shi,Rui-Ying ZhangSchool of Materials Science and Engineering, Inner Mongolia University of Technology摘 要:An Al2O3P/Al composite was successfully synthesized using a displacement reaction between 80......
that the as-cast hypoeutectic Mg-Ni alloys exhibit high damping capacities. The strain amplitude dependent damping curve has its own special characteristic, in which the damping is strongly related to the strain amplitude. The effect of the eutectic phase on damping and the mechanical properties of as-cast hypoeutectic Mg-Ni alloys were also discussed in detail. Key words: Mg-Ni hypoeutectic alloys......
. The effect of large discontinuities (faults) behavior on a jointed medium around rectangular tunnels is studied. A hybridized indirect boundary element code named TFSDDM (fictitious stress displacement discontinuity method) is used to study the stress distribution around the tunnels excavated in jointed rock masses. The code uses advantages of both fictitious stress and displacement discontinuity......
with different displacements and deformations. Then, the method of the soil division was presented, and the characteristic of single soil block was studied. The displacement of the block had two components... by the large direct shear apparatus. So, this method can be used in slope back analysis and its effectiveness is proved.Key words:slope parameter; back analysis; soil division; deformation displacement......
signaling-based scheme by about 2 dB with the same complexity order.Key words:bit error rate; cooperative diversity; quadrature amplitude modulation; signal space diversity......
and the evaluation of the apparent structural relaxation time by the two-mode fractional Maxwell model. Key words: strain-rate frequency superposition; medium amplitude oscillatory shear; linear viscoelasticity... in measurements and insufficient resolution of transducer, which limits the frequency range of the canonical method, small amplitude oscillatory shear (SAOS) [1], for investigating the linear viscoelastic......
vibration particle. The magnitude and scope of the enlargement are closely related to the millisecond time. Meanwhile, the particle vibration displacement characteristics of rock under long cylindrical... blasting; blasting vibration; peak particle velocity; displacement......
control of airborne electromagnetic wave form based on amplitude tracking method YU Shengbao, SONG Shuchao, XU Jianan, ZHANG Jialin, CHEN Xu (College of Instrumentation and Electrical Engineering, Jilin... time of falling edge was solved. Then a best fitting line was established and the clamping voltage formula was introduced. By using amplitude tracking method, clamping voltage was under the closed......
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基于塑性应变的变幅应力疲劳损伤评估方法张继旺1,鲁连涛1,沈训梁1,衣鸿飞1,张卫华1(1.四川省成都市西南交通大学牵引动力国家重点实验室)摘 要:中碳车轴用钢的旋转弯曲疲劳实验结果表明,在其疲劳极限以上,应力-寿命数据满足三参数曲线关系,因此,其变幅应力作用下的疲劳损伤不能使用基于应力的线性累积损伤法则评估.本文结合中碳车轴用钢恒幅和高/低两级多次变幅应力的旋转弯曲疲劳实验数据,基于恒幅应力作用下S-N曲线倾斜部分曲线,提出了可用于材料在变幅旋转弯曲作用下的疲劳损伤评估的方法.该方法考虑材料在疲劳过程中发生的......