Mechanical Properties of 2D Braided Polyester Ropes

2011 ◽  
Vol 331 ◽  
pp. 52-55
Author(s):  
Jin Qiu Zhang ◽  
Ling Cheng
Keyword(s):  
Mechanical Properties ◽  
Tensile Properties ◽  
Breaking Strength ◽  
Unit Length ◽  
Structure Parameters ◽  
Two Dimensional ◽  
Breaking Elongation ◽  
Pitch Length ◽  
The Relationship

The relationship between the structure parameters and the mechanical properties of two-dimensional braided polyester ropes were studied. 22 times of polyester ropes were braided with different pitch length and different yarns, and their tensile properties were tested, then the relationship between the mechanical properties of the rope and braiding pitch was obtained. The results showed that the breaking strength of 2D braided ropes increased with the increase of pitch length, but after achieving certain length, the strength began to decline, and the breaking elongation decreased along with the increase of unit length.

scholarly journals Experimental-numerical studies of the effect of cell structure on the mechanical properties of polypropylene foams

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 713-723
Author(s):  
Wei Gong ◽  
Tuan-Hui Jiang ◽  
Xiang-Bu Zeng ◽  
Li He ◽  
Chun Zhang
Keyword(s):  
Mechanical Properties ◽  
Size Distribution ◽  
Cell Size ◽  
Cell Structure ◽  
Structure Parameters ◽  
Cell Size Distribution ◽  
Numerical Studies ◽  
Polypropylene Foam ◽  
The Impact ◽  
The Relationship

AbstractThe effects of the cell size and distribution on the mechanical properties of polypropylene foam were simulated and analyzed by finite element modeling with ANSYS and supporting experiments. The results show that the reduced cell size and narrow size distribution have beneficial influences on both the tensile and impact strengths. Decreasing the cell size or narrowing the cell size distribution was more effective for increasing the impact strength than the tensile strength in the same case. The relationship between the mechanical properties and cell structure parameters has a good correlation with the theoretical model.

About the Static Mechanical Properties of Epoxy/Hemp Composites

2020 ◽  
Vol 896 ◽  
pp. 321-326
Author(s):  
Cosmin Mihai Miriţoiu ◽  
Nicolae Craciunoiu ◽  
Alexandru Bolcu ◽  
Ionuţ Daniel Geonea ◽  
Ionica Valeriu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Standard Deviation ◽  
Tensile Test ◽  
Yield Stress ◽  
Mechanical Characteristics ◽  
Breaking Strength ◽  
Young Modulus ◽  
Breaking Elongation ◽  
Static Mechanical ◽  
Static Mechanical Properties

In this paper, static mechanical characteristics for some epoxy/hemp composites are studied. By using the tensile test, the static mechanical characteristics are determined, such as: breaking strength, yield stress, Young modulus and breaking elongation. There is also determined the standard deviation. Then, by using some known theories, there is validated the static Young modulus.

Effect of Temperature and Humidity on Mechanical Properties of Rabbit Hair Fibers

2012 ◽  
Vol 573-574 ◽  
pp. 1230-1234
Author(s):  
Qian Yang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strain ◽  
Breaking Strength ◽  
Great Influence ◽  
Effect Of Temperature ◽  
Breaking Force ◽  
Breaking Elongation ◽  
Different Temperatures ◽  
Hair Fiber ◽  
Fiber Processing

In this paper, it tests the mechanical properties of rabbit hair fibers in different temperatures and humidity. Contrast and analysis by experiment showed the temperature exerts a great influence on the tensile strain, breaking elongation, breaking force and breaking strength. In wetting condition, the tensile strain and breaking elongation increase, but the breaking force and breaking strength decrease. The rabbit hair fiber processing with too much water will make the structure easier to break and destroy.

scholarly journals Study on the Relationship between High Temperature Mechanical Properties and Precipitates Evolution of 7085 Al Alloy after Long Time Thermal Exposures

Metals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1483
Author(s):  
Jinxin Zang ◽  
Pan Dai ◽  
Yanqing Yang ◽  
Shuai Liu ◽  
Bin Huang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
High Temperature ◽  
Tensile Properties ◽  
Volume Fraction ◽  
Al Alloy ◽  
Strengthening Effect ◽  
Nano Scale ◽  
High Temperature Mechanical Properties ◽  
The Relationship

The requirement for 7085 Al alloy as large airframe parts has been increasing due to its low quenching sensitivity and high strength. However, the relationship between high temperature mechanical properties and the evolution of precipitates in hot environments is still unclear. In this work, thermal exposure followed by tensile tests were conducted on the 7085 Al alloy at various temperatures (100 °C, 125 °C, 150 °C and 175 °C). Variations of hardness, electrical conductivity and tensile properties were investigated. The evolution of the nano scale precipitates was also quantitatively characterized by transmission electron microscopy (TEM). The results show that the hardness and electrical conductivity of the alloy are more sensitive to the temperature than to the time. The strength decreases continuously with the increase of temperature due to the transformation from η′ to η phase during the process. Furthermore, the main η phase in the alloy transformed from V3 and V4 to V1 and V2 variants when the temperature was 125 °C. Additionally, with increasing the temperature, the average precipitate radius increased, meanwhile the volume fraction and number density of the precipitates decreased. The strengthening effect of nano scale precipitates on tensile properties of the alloy was calculated and analyzed.

Effect of Thermal Finishing on the Mechanical Properties of Hollow Polyester Fiber

2014 ◽  
Vol 881-883 ◽  
pp. 889-892
Author(s):  
Wei Ming Wang ◽  
Bo Yu ◽  
Yun Feng
Keyword(s):  
Mechanical Properties ◽  
Tensile Stress ◽  
Breaking Strength ◽  
Orthogonal Experiment ◽  
Effect Factor ◽  
Breaking Elongation ◽  
Fiber Wall ◽  
Finishing Process ◽  
Setting Parameters ◽  
Experiment Analysis

The effect of thermal setting parameters namely tensile stress, temperature and time on the breaking strength and breaking elongation of hollow polyester (PET) fiber (PorelTM fiber) were investigated, and their synergistic effect was studied via orthogonal experiment. The results show that protection of fiber wall is an important task during thermal finishing process of hollow fiber. There are direct relationships between micro-molecular structure and mechanical properties. Orthogonal experiment analysis shows that the most significant effect factor for breaking strength and breaking elongation are temperature and tensile stress, respectively. The suggested thermal finishing conditions for PorelTM fiber are summarized as following: elongation (viz. tensile stress) 4%, temperature 165°C, and time 60s.

Theoretical Calculation of Electronic Structure and Mechanical Properties of Quenched Carbon Structural Steel

2013 ◽  
Vol 749 ◽  
pp. 528-534
Author(s):  
Yue Jun Sun ◽  
Si Nan Li ◽  
Hai Fang Shi ◽  
Zhi Yu Gao ◽  
Shao Bin Yang
Keyword(s):  
Mechanical Properties ◽  
Electronic Structure ◽  
Theoretical Calculation ◽  
Structural Steel ◽  
Fatigue Property ◽  
Structure Parameters ◽  
Electron Theory ◽  
Empirical Electron Theory ◽  
Carbon Structural Steel ◽  
The Relationship

To investigate the fatigue property of carbon structural steel in theory, the microstructure and properties of quenched martensite must be studied in detail. In this paper, the electronic structure and mechanical properties of carbon structural steel in quenched state were calculated by the empirical electron theory of solids and molecules (EET). The relationship between electronic structure parameters and mechanical properties of martensite was investigated. The mechanical properties of quenched carbon structural steel were calculated theoretically, and the result of theoretical calculation is consistent with the experiment result.

scholarly journals The performance properties of the yarn and fabrics produced from different types of cotton

2019 ◽  
Vol 70 (05) ◽  
pp. 398-402
Author(s):  
DIRGAR ESRA ◽  
ORAL OKSAN ◽  
OZDIL NILGUN
Keyword(s):  
Mechanical Properties ◽  
Breaking Strength ◽  
Knitted Fabrics ◽  
Performance Properties ◽  
Different Types ◽  
Significance Levels ◽  
Cotton Yarns ◽  
The Relationship ◽  
Study Performance ◽  
Single Jersey

In this study, performance properties of single jersey knitted fabrics made from Aegean cotton, Supima cotton and Giza cotton yarns are investigated. Firstly, Uster parameters and breaking strength of the yarns were examined and then the properties of the fabrics knitted from these yarns were evaluated statistically. The significance levels of the relationship between the measured parameters were determined. Considering the results obtained with the mechanical properties of the fabrics with Uster analysis applied to these yarns, it is seen that the yarns made from Supima and Giza cotton fibers in extra long fiber category have more smooth, less hairiness, contain less neps and the fabrics knitted with these yarns have high mechanical properties.

Utilization of Fiber Strength in Jute Yarns

1969 ◽  
Vol 39 (11) ◽  
pp. 1038-1043 ◽  
Author(s):  
B. L. Banerjee ◽  
A. Lahiri
Keyword(s):  
Fracture Zone ◽  
Breaking Strength ◽  
Fiber Strength ◽  
Unit Length ◽  
Test Results ◽  
Utilization Factor ◽  
Fiber Composition ◽  
Yarn Tenacity ◽  
The Relationship

From a study of the relationship between the breaking strength and the corresponding mass per unit length at thefracture zone of a yarn, the expected strength of a perfectly even yarn of identical fiber composition has been derived. The ratio between the observed strength and this estimated value has been taken as a measure of utilization of fiber strength in yarn. The dependence of this utilization factor on the diameter irregularity of yarn has been examined on the basis of test results obtained on a number of yarn samples of different qualities. The yarn tenacity at the fracture zone is also found to be related with its diameter irregularity; the causes of this are discussed

Study on Structure and Mechanical Properties of Spacer Fabric

2011 ◽  
Vol 332-334 ◽  
pp. 1093-1096
Author(s):  
Xiao Liu ◽  
Zhao Qun Du ◽  
Wei Dong Yu
Keyword(s):  
Mechanical Properties ◽  
Tensile Properties ◽  
Sandwich Structures ◽  
Experimental Results ◽  
Spacer Fabric ◽  
Spacer Fabrics ◽  
The Relationship

3D spacer fabrics have obviously better performance compared with ordinary fabrics due to their special "sandwich" structures. The paper is to investigate the structures and their compression performances, tensile properties and bending performances on 20 kinds of 3D spacer fabrics. The experimental results showed the relationship between mechanical properties and structures of spacer fabric, and obtained the correlation between each mechanics index and fabric, stiffness. It is useful in expressing the special behaviors of spacer fabrics.

Research on the Tensile and Surface Frictional Property of PLA Fibers

2011 ◽  
Vol 322 ◽  
pp. 287-290
Author(s):  
Qing Bin Yang
Keyword(s):  
Mechanical Properties ◽  
Breaking Strength ◽  
Frictional Property ◽  
Breaking Elongation ◽  
Basic Properties ◽  
Breaking Work

In order to understand the mechanical properties of the PLA fibers, the basic properties of the PLA fibers are measured with different instruments. By the analysis of the results, the following conclusions can be deduced: in the dry state, the initial module and the breaking elongation of the PLA fibers are greater than that of the polyester and nylon and the breaking strength and the breaking work of the PLA fibers are situated between that of the polyester and nylon; in the wet state, the mechanical properties of the PLA fibers have more remarkable changes.

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