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Online since: June 2010
Authors: Maciej Suliga
In this work the influence of value of single draft on mechanical-technological properties
of high carbon steel wires was evaluated.
The selection of the individual draft magnitude depends on numerous factors, which include the following: the plasticity of material and its structure, and the conditions and mode of deformation [1-2].
Variation of mechanical properties of wires drawn according to Variants A, B and C as a function of the total draft.
Therefore, wires drawn with large drafts (Variant A) are characterized by much higher mechanical properties.
Muskalski: The influence of single draft on mechanical-technological properties of TRIP steel wires.
The selection of the individual draft magnitude depends on numerous factors, which include the following: the plasticity of material and its structure, and the conditions and mode of deformation [1-2].
Variation of mechanical properties of wires drawn according to Variants A, B and C as a function of the total draft.
Therefore, wires drawn with large drafts (Variant A) are characterized by much higher mechanical properties.
Muskalski: The influence of single draft on mechanical-technological properties of TRIP steel wires.
Online since: December 2013
Authors: Muhd Fadhil Nuruddin, Nasir Shafiq, Kok Yung Chang, Norzaireen Mohd Azmee
Factors Influencing the Workability of DSCC
Steel Fiber.
Steel fiber in DSCC is one of the main considerations as it will affect the mechanical properties and workability of DSCC.
Thus, it gives better mechanical properties to the concrete.
The inclusion of steel fibers not only improves the mechanical properties but improve the durability properties such as water permeability.
Hwang, Mechanical properties of high-strength steel fiber-reinforced concrete.
Steel fiber in DSCC is one of the main considerations as it will affect the mechanical properties and workability of DSCC.
Thus, it gives better mechanical properties to the concrete.
The inclusion of steel fibers not only improves the mechanical properties but improve the durability properties such as water permeability.
Hwang, Mechanical properties of high-strength steel fiber-reinforced concrete.
Online since: February 2014
Authors: In Kyu Kwon
A Study on Comparison of Mechanical, Thermal Properties of High Strength Structural Steels at High Temperature
In-Kyu Kwon
Department of Fire Protection Engineering, Kangwon National University, Korea
kwonik@kangwon.ac.kr
Keywords: Mechanical and Thermal properties at high temperature; High strength structural steels; SM 520; SM 570; Eurocode 3
Abstract.
In order to compare the fire resistance performance of high strength structural steels at high temperature, databases such as mechanical and thermal properties at elevated temperature were compared with those of Eurocode 3.
Experiment for mechanical and thermal properties of high strength structural steel at high temperature Mechanical properties such as yield strength, elastic modulus and thermal properties such as linear expansion coefficient at high temperature are fundamental factors when evaluating the fire resistance performance by using the advanced fire engineering method.
The comparison results showed that the thermal properties from Korea were lower and the mechanical propertes as a whole are similar.
Shin, Evaluation of Fire Resistance Using Mechanical Properties at High Temperature for Steel Column Made of Rolled Steels (SS 400), Korean Journal of Metal Materials, 2011, Vol. 49, No. 9, pp. 671~677
In order to compare the fire resistance performance of high strength structural steels at high temperature, databases such as mechanical and thermal properties at elevated temperature were compared with those of Eurocode 3.
Experiment for mechanical and thermal properties of high strength structural steel at high temperature Mechanical properties such as yield strength, elastic modulus and thermal properties such as linear expansion coefficient at high temperature are fundamental factors when evaluating the fire resistance performance by using the advanced fire engineering method.
The comparison results showed that the thermal properties from Korea were lower and the mechanical propertes as a whole are similar.
Shin, Evaluation of Fire Resistance Using Mechanical Properties at High Temperature for Steel Column Made of Rolled Steels (SS 400), Korean Journal of Metal Materials, 2011, Vol. 49, No. 9, pp. 671~677
Online since: December 2010
Authors: Wei Chun Zhong, Hui Zhou, Xiao Yi Zhang, Chuang Sheng Zheng
Experimental study on hydration heat and mechanical properties of box girder concrete at early age were carried out.
The current study reveals that the early cracks in prestressed concrete box girder bridge result from two main factors [2-4].
The Test of Physical and Mechanical Properties The Test Method The work performance of concrete is affected by the mechanical properties of concrete, especially at the early age.
The mechanical properties of concrete in the construction stage are typical slow time-varying structural mechanics problem, which are affected by some variable factors [7].
The study on the physical and mechanical properties of concrete at the early age has important guiding significance for the design and construction technology.
The current study reveals that the early cracks in prestressed concrete box girder bridge result from two main factors [2-4].
The Test of Physical and Mechanical Properties The Test Method The work performance of concrete is affected by the mechanical properties of concrete, especially at the early age.
The mechanical properties of concrete in the construction stage are typical slow time-varying structural mechanics problem, which are affected by some variable factors [7].
The study on the physical and mechanical properties of concrete at the early age has important guiding significance for the design and construction technology.
Online since: January 2017
Authors: Cai Hong Li, Jun Su
This paper studies how the addition and various content of Carbon nanotube (CNT) affecting the properties, especially the color difference of ethylene propylene diene rubber (EPDM)/ CaCO3 composites.
The carbon nanotubes can also greatly influence the tensile and other properties.
Mechanical Properties.
Fig.1 ΔL change of EPDM composites Fig.2 Δa change of EPDM composites Fig.3 Δb change of EPDM composites Fig.4 ΔE change of EPDM composites Mechanical properties.
Kim, Prediction and optimization of mechanical properties of polypropylene/waste tire powder blends using a hybrid Artificial Neural Network-Genetic Algorithm (GA-ANN), J.
The carbon nanotubes can also greatly influence the tensile and other properties.
Mechanical Properties.
Fig.1 ΔL change of EPDM composites Fig.2 Δa change of EPDM composites Fig.3 Δb change of EPDM composites Fig.4 ΔE change of EPDM composites Mechanical properties.
Kim, Prediction and optimization of mechanical properties of polypropylene/waste tire powder blends using a hybrid Artificial Neural Network-Genetic Algorithm (GA-ANN), J.
Online since: September 2013
Authors: Wei Wang, Tao Liu, Tan Wang
It introduces various factors of influence on pavement performance, including cement content, gradation, reclaimed asphalt pavement (RAP), optimum moisture content(OMC), compaction density and curing conditions; explores main pavement performance, such as mechanical properties, shrinkage properties, fatigue properties and water stability properties of the cement cold-recycled mixture; summarizes the application experience of the cement cold-recycled mixture; pointes out the research topic of cement cold-recycled base at present, which includes properties of old pavement materials, the application of additives, the establishment of pavement performance evaluation indexes and systems, etc.
Influential factors on pavement performance of cement cold recycling base mixture There are various influential factors on pavement performance of the cement cold recycling base mixture, including cement content, gradation, reclaimed asphalt pavement (RAP), optimum moisture content(OMC), compaction density and curing conditions, etc[11-16].
Gradation The aggregate gradation impacts the optimum moisture content and the maximum dry density of the recycling mixture, then affecting its compaction characteristics.
Curing conditions The mechanical properties of the cement stabilized materials have a certain relationship with curing temperatures.
Mechanical performance Stelios Kolias researches on RAP (reclaimed asphalt pavement) content’s influence on the mechanical performance of the cold recycling mixture.
Influential factors on pavement performance of cement cold recycling base mixture There are various influential factors on pavement performance of the cement cold recycling base mixture, including cement content, gradation, reclaimed asphalt pavement (RAP), optimum moisture content(OMC), compaction density and curing conditions, etc[11-16].
Gradation The aggregate gradation impacts the optimum moisture content and the maximum dry density of the recycling mixture, then affecting its compaction characteristics.
Curing conditions The mechanical properties of the cement stabilized materials have a certain relationship with curing temperatures.
Mechanical performance Stelios Kolias researches on RAP (reclaimed asphalt pavement) content’s influence on the mechanical performance of the cold recycling mixture.
Online since: December 2012
Authors: Jun Wang, Kai Yuan, Chong Wang, Lei Yu
The influence of micro-bridge structure on the device performance was studied and simulation results showed that the bridge leg shape and width affected mainly on the thermal and mechanical properties of device.
A compromise design between the thermal and mechanical properties was obtained in order to maintain the best performance of the device.
By contrast, it can be found that besides the shape of the bridge leg, its width is also one of the major factors influencing the mechanical property of microbolometer.
In other words, widening the leg is beneficial to the improvement of mechanical property.
A compromise design between the thermal and mechanical properties should be considered in order to maintain the best performance of THz wave detector.
A compromise design between the thermal and mechanical properties was obtained in order to maintain the best performance of the device.
By contrast, it can be found that besides the shape of the bridge leg, its width is also one of the major factors influencing the mechanical property of microbolometer.
In other words, widening the leg is beneficial to the improvement of mechanical property.
A compromise design between the thermal and mechanical properties should be considered in order to maintain the best performance of THz wave detector.
Online since: September 2013
Authors: Li Zhang, Chun Fang Yu, Jing Guo, Fu Cheng Guan, Zhi Chao Wang, Xue Cai Li, Yu Yan Zhang
The study of rheological and mechanical properties of the Antarctic krill protein/sodium alginate fibers
Jing Guoa, Xuecai Lib, Yuyan Zhangc, Li Zhang, Chunfang Yu , Fucheng Guan, Zhichao Wang.
The rheological properties of spinning solution was tested by Brookfield DV-C digital viscosimeter at 30~60℃.
Tab.1 Orthogonal experimental results Test number Factors breaking strength /(cN.dtex-1) A B C 1 3 1:9 5:1 1.51 2 3 2:8 4:1 0.37 3 3 3:7 3:1 0.28 4 3 4:6 2:1 0 5 4 1:9 4:1 1.24 6 4 2:8 5:1 0.61 7 4 3:7 2:1 0.48 8 4 4:6 3:1 0.34 9 5 1:9 3:1 0.72 10 5 2:8 2:1 0.77 11 5 3:7 5:1 0.91 12 5 4:6 4:1 0.44 13 6 1:9 2:1 0.46 14 6 2:8 3:1 0.33 15 6 3:7 4:1 0.19 16 6 4:6 5:1 0.61 range 0.313 0.634 0.492 The range table can obviously show the biggest influencing factor in the spinning process conditions on the fiber mechanical properties: AKP solution and SA solution ratio > Cacl2 and PEG ratio > SA concentration.
Impact of AKP solution and SA proportion: Effect of components on mechanical properties in the final analysis is the influence of the compatibility of the two components to fiber performance.
Increasing SA concentration can also improve the mechanical properties of gel[4], but higher concentration leads to higher liquid viscosity and bad Liquidity, and not good for spinning forming ,The mechanics performance of the fiber is poor and even solution is unstable when concentration is lower than a certain value. 4%~5% of dope solution is better for the forming ability and mechanical property.
The rheological properties of spinning solution was tested by Brookfield DV-C digital viscosimeter at 30~60℃.
Tab.1 Orthogonal experimental results Test number Factors breaking strength /(cN.dtex-1) A B C 1 3 1:9 5:1 1.51 2 3 2:8 4:1 0.37 3 3 3:7 3:1 0.28 4 3 4:6 2:1 0 5 4 1:9 4:1 1.24 6 4 2:8 5:1 0.61 7 4 3:7 2:1 0.48 8 4 4:6 3:1 0.34 9 5 1:9 3:1 0.72 10 5 2:8 2:1 0.77 11 5 3:7 5:1 0.91 12 5 4:6 4:1 0.44 13 6 1:9 2:1 0.46 14 6 2:8 3:1 0.33 15 6 3:7 4:1 0.19 16 6 4:6 5:1 0.61 range 0.313 0.634 0.492 The range table can obviously show the biggest influencing factor in the spinning process conditions on the fiber mechanical properties: AKP solution and SA solution ratio > Cacl2 and PEG ratio > SA concentration.
Impact of AKP solution and SA proportion: Effect of components on mechanical properties in the final analysis is the influence of the compatibility of the two components to fiber performance.
Increasing SA concentration can also improve the mechanical properties of gel[4], but higher concentration leads to higher liquid viscosity and bad Liquidity, and not good for spinning forming ,The mechanics performance of the fiber is poor and even solution is unstable when concentration is lower than a certain value. 4%~5% of dope solution is better for the forming ability and mechanical property.
Online since: April 2022
Authors: Tadashi Nishihara, Takahiro Ohashi, Hamed Mofidi Tabatabaei
The effects of process parameters and heat treatment conditions on mechanical properties were experimentally investigated, and it revealed improved mechanical properties after applying T6 and age hardening treatments.
It was concluded that rotational speed and heat treatment conditions significantly affect the metal microstructure and mechanical properties of the joint.
Effect of Post-FSF Heat Treatment on Mechanical Properties of Heat-Treated Aluminium Alloys.
The mechanical properties before and after heat treatment were evaluated.
• The diffusion reaction and material flow are considered to be important factors for improving the tensile properties of the developed composite
It was concluded that rotational speed and heat treatment conditions significantly affect the metal microstructure and mechanical properties of the joint.
Effect of Post-FSF Heat Treatment on Mechanical Properties of Heat-Treated Aluminium Alloys.
The mechanical properties before and after heat treatment were evaluated.
• The diffusion reaction and material flow are considered to be important factors for improving the tensile properties of the developed composite
Online since: December 2014
Authors: Yi Feng, Guang Yao Wang, Qing Sheng Jin, Jun Ping Zhang, Lei Feng Song
The predominant factor affecting spatter is the current density on contact surfaces.
Among these size parameters, nugget diameter is the principal factor affecting weld strength.
Resembling welding current, the increase of welding time yields larger nugget and improves the mechanical properties of welds while welding too long does harm to mechanical properties.
Investigation of the thermo-mechanical properties of hot stamping steels[J].
Controlling factors[J].
Among these size parameters, nugget diameter is the principal factor affecting weld strength.
Resembling welding current, the increase of welding time yields larger nugget and improves the mechanical properties of welds while welding too long does harm to mechanical properties.
Investigation of the thermo-mechanical properties of hot stamping steels[J].
Controlling factors[J].