Tensile Stress Relaxation of DDAC-modified Montmorillonite/ Wood Composite DDAC改性蒙脱土-木材复合材料的应力松弛
20 human cornea specimens and 30 porcine specimens were used for uniaxial test by Instron apparatus. Their tensile strength, stress strain relationship, relaxation properties were tested. 方法:切成条状的人角膜和猪角膜在INSTRON万能实验机上做单轴拉伸实验,测量它们的强度、应力应变、应力松驰。
The enhancement mechanism of hybrid fiber was investigated by observing the SEM photos of cross section. The main factors affecting the hybrid effect coefficient were presented and the relationship among this coefficient, transverse tensile strength and stress relaxation rate of NAFC materials was discussed. 利用扫描电镜(SEM)分析了材料拉伸断面形貌,探讨了混杂纤维增强机制,分析了混杂效应系数的主要影响因素,研究了混杂效应系数与材料横向抗拉强度和应力松弛率之间的关系。
The biomechanical properties of eight human corneas from four normal Chinese fresh corpses were investigated by use of one dimension tensile test, tensile stress relaxation and creep test. 对正常国人6具新鲜尸体8个眼角膜标本进行单向拉伸实验和拉伸应力松弛、蠕变实验。
The viscoelastic properties of a set of star-shaped polystyrenes with 4-12 arms were studied in bulk by the tensile stress relaxation method. 用应力松弛法研完了一组4&12支链星形聚苯乙烯本体的粘弹性。
This study is to investigate the biomechanical properties of human nasal periosteum and deep fascia, including tensile strength, stress-strain and stress relaxation characters under uniaxial tension system. 本文着重研究了人鼻骨膜和深筋膜的生物力学特征,主要包括单轴拉伸下的强度、应力&应变及应力松弛。
Finally, the tensile stress relaxation of rock and the accuracy of computation are also mentioned. 对岩石拉应力松弛及计算精度的控制等问题,文中也提出了看法。
An investigation for nonwoven fabrics with various amount of powder binder shows that the tensile and stress relaxation properties of nonwoven fabrics may be described by using a linear or non-linear three elements mechanical models well. 对不同粉末粘结剂含量非织造布的研究表明:线性和非线性的简易三元件模型均能较好地描述非织造布的拉伸性能和应力松弛性能。
Experiment Study on the Tensile Stress Relaxation and Creep of the Cancellous Bone of the OS Femoris Neck 股骨颈松质骨拉伸蠕变实验研究
If tensile strength and stress strain were the only mechanical factor to be investigated, porcine cornea could be used as a substitute model for human cornea research. However, when stress relaxation factors were concerned, the biomechanical properties were quite different in the two species. 结论:仅考虑强度、应力应变关系,猪角膜可作为人角膜的代用品进行研究,但若考虑应力松驰等生物力学特性,则人角膜与猪角膜存在较大差异。
The sturcture, density, hardness, compression modulus, tensile strength, stress relaxation, permanent deformation properties of foam fabricated by blending silicone rubber and EPDM were studied. 研究了硅橡胶/三元乙丙橡胶(Q/EPDM)配方对泡沫合金的结构、密度、硬度、压缩、拉伸、应力松弛等力学性能的影响规律。
It is indicated that the main factors affecting tensile stress relaxation test at normal atmospheric temperature are the type and precision of tester, loading process of sample, test temperature and data disposal. 指出影响常温拉伸应力松弛试验的主要因素有试验机的类型和精度,试样的加荷过程,试验的温度及数据处理。
The fixation mechanism of ACQ constituents in treated wood was determined with the help of FTIR analysis and tensile stress relaxation analysis. 通过FTIR光谱分析及应力松弛分析等手段考察了ACQ组分在杉木处理材中的固着机理。