1) intensity of ultrasonic damping
超声衰减的强度
1.
The intensity of ultrasonic damping increased with the void content of polyimide composite,the relationship between the intensity of ultrasonic damping and the void content as well as mechanical properties of composite was established.
利用超声衰减的强度随聚酰亚胺复合材料孔隙率增加而逐渐增加的性质,建立超声衰减的强度与孔隙率之间的关系,再将不同孔隙率与复合材料力学性能之间的关系对应起来。
2) Ultrasonic attenuation
超声衰减
1.
Pulse-echo based ultrasonic attenuation model for porosity test of carbon fiber composites;
碳纤维复合材料孔隙率的脉冲反射法超声衰减测试模型
2.
Ultrasonic attenuation coefficient of the spray-atomized and co-deposited 6061Al/SiCp composite;
用超声衰减法研究喷射沉积6061Al/SiCp复合材料的阻尼性能
3.
Ultrasonic attenuation technique is used to investigate a method to measure mass concentration of paper fibers in dilute pulp suspensions.
采用超声衰减技术研究了稀释纸浆悬浮液中纸纤维质量浓度的测量方法,讨论了稀释纸浆悬浮液中超声的衰减机理。
3) strength degradation
强度衰减
1.
An approach to estimate fatigue life of concrete based on residual strength degradation;
基于剩余强度衰减的混凝土疲劳寿命估算方法
2.
The study confirmes that the long_term failure of ceramics is due to the strength degradation that can be caused by various factors.
认为长期失效的本质是强度衰减 ,建立了一个疲劳失效的强度衰减模型和提出了寿命预测方法 。
3.
It is universally acknowledged that soil strength degradation and creep under water-Absorption are main factors of startup of landslide.
土体吸水蠕变强度衰减是散体滑坡演绎启动的根本原因,以巫山冯家坝滑坡为例,由室内试验得到不同饱和度下松散土体的物理力学参数,应用大型有限元数值模拟软件ANSYS,研究了降雨条件下散体滑坡的演变趋势。
4) strength attenuation
强度衰减
1.
Base on the test of 10 reinforcement concrete columns in reference[1], the recovery-force behaviors of biaxial reversed cyclic load about monotonic load line, strength attenuation consumption performance and the parameters of damage model are determined in this paper.
根据文献 [1]中 10根钢筋混凝土柱试验的基础上 ,分析单调加载线、强度衰减等在双向循环荷载作用下的恢复力特性 ,并确定了双向累积损伤模型参数 。
6) Ultrasonic attenuation
超声波衰减
1.
Based on analyzing the theoretical model of ultrasonic attenuation, the formula was integrated into the ultrasonic attenuation model, and the relation of ultrasonic attenuation to pulp density and particle size was derived.
在分析超声衰减基本理论模型的基础上,将不同粒径的筛下累积含量集成到超声波衰减模型中,推导出超声波衰减与矿浆浓度、粒度之间的关系模型。
2.
A formula is proposed for calculating the sand content of different size in the case of matching particle size of sand,thus obtaining the correlation between ultrasonic attenuation and density of solid particles in the pulp,as well as particle size.
提出了在矿砂粒径尺寸级配情况下的不同粒径时的矿砂含量的公式,并由此得到了超声波衰减与矿浆中固体颗粒浓度、粒度之间的关系。
补充资料：超声衰减（ultrasonicattenuation）
超声衰减（ultrasonicattenuation）
BCS理论给出超导态和正常态两相超声衰减系数αs和αn之比为：
αs/αn=2[1 exp(Δ(T)/kBT)]-1
由此实验上可测量能隙Δ，并对铅、铝、锡等测出的Δ值与其他方法测得的结果基本相符，比值与温度T变化的实验曲线也与理论公式相符，也说明BCS理论对这些超导材料是正确的。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条