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Online since: February 2012
Authors: Quan Kun Liu, Ling Yun Qian, Ya Li Zhao
(4)
(2) Permanent radial displacement caused by plastic deformation should not affect the dimensional accuracy of extrusion part, so it should be limited in a certain range.
Finite Element Simulation Finite element modeling The material properties for die are elastic modulus E =2.1×105MPa, Poisson's ratio m=0.3, tensile yield strength σs =1240MPa, the reverse compression yielding strength is 1066MPa when taking into account the Bauschinger effect and set Bauschinger effect factor BEF=0.86[6].
The maching accuracy of parts is also an important factor in the mold design.
Material properties of inner and outer layers are assumed to be the same as autofrettaged die.
Chinese Journal of Mechanical Engineering, Vol.47(12) (2011),26-31(in Chinese).
Finite Element Simulation Finite element modeling The material properties for die are elastic modulus E =2.1×105MPa, Poisson's ratio m=0.3, tensile yield strength σs =1240MPa, the reverse compression yielding strength is 1066MPa when taking into account the Bauschinger effect and set Bauschinger effect factor BEF=0.86[6].
The maching accuracy of parts is also an important factor in the mold design.
Material properties of inner and outer layers are assumed to be the same as autofrettaged die.
Chinese Journal of Mechanical Engineering, Vol.47(12) (2011),26-31(in Chinese).
Online since: December 2013
Authors: Hong Luo, Bao Liu Zhang, Zheng Qing Wang
Obviously the water, earth, and air near factories have been ruinously affected.
Straw-burning pollution Currently all crops’ straw yield is about 5.8 million tons, while the latest estimated utilization rate of straw is only about 30%, the straw is treated in various ways, including being abandoned in rivers, lakes, ditches and road sides, or incinerated to ashes, which not only wastes a large amount of resources, but also pollutes the atmosphere and water body while affects the rural ecological environment.
Moreover, the smoke generated during burning process will have severe irritation on people's eyes and throat, even lead to respiratory disease, which greatly affects people's health.
Since the environmental protection plan design adopts a "Polluter Pays" principle, which is a lagging behind planning and mechanism arrangement with strong mechanical properties.
Although the planning process will be impeded by restricting factors, as long as a timely adjustment, it is expected to achieve the ultimate ecological stability, bio-diversity and rational allocation of resources.
Straw-burning pollution Currently all crops’ straw yield is about 5.8 million tons, while the latest estimated utilization rate of straw is only about 30%, the straw is treated in various ways, including being abandoned in rivers, lakes, ditches and road sides, or incinerated to ashes, which not only wastes a large amount of resources, but also pollutes the atmosphere and water body while affects the rural ecological environment.
Moreover, the smoke generated during burning process will have severe irritation on people's eyes and throat, even lead to respiratory disease, which greatly affects people's health.
Since the environmental protection plan design adopts a "Polluter Pays" principle, which is a lagging behind planning and mechanism arrangement with strong mechanical properties.
Although the planning process will be impeded by restricting factors, as long as a timely adjustment, it is expected to achieve the ultimate ecological stability, bio-diversity and rational allocation of resources.
Online since: March 2009
Authors: Johan De Keuster, Joost R. Duflou, Jean Pierre Kruth, Ehsan Fallahi Sichani
The scraper mirror has the advantage of passing the laser beam without disturbance and therefore
the properties of the laser beam are not altered.
Spectral sensitivity of the selected NIR camera Three important factors namely magnification of the image, chromatic aberration and geometrical aberration were taken into account in the simulations: - The magnification of the image: since the light bundle can be considered to be parallel in the relay path (i.e. distance between the cutting lens and the camera lens), the magnification factor ( opticV ) can be defined as the ratio of the focal length of the camera lens to the focal length of the cutting lens.
The corresponding magnification factors for the typically-used cutting lenses (with 7.5" focal length) is 1.31.
Since the available space in the carriage was however limited, an extra mirror was introduced in order to respect the focal distance of 250 mm - Chromatic aberration: the optical properties of the lens material are dependent on the wavelength.
Since the dichroic mirror is logically the only component of the monitoring system that might influence the properties of the laser beam, a detailed analysis has been performed to identify this probable influence. 1 The window of interest is a virtual rectangular area within the camera image of which the pixel values are classified by the camera as thermal images.
Spectral sensitivity of the selected NIR camera Three important factors namely magnification of the image, chromatic aberration and geometrical aberration were taken into account in the simulations: - The magnification of the image: since the light bundle can be considered to be parallel in the relay path (i.e. distance between the cutting lens and the camera lens), the magnification factor ( opticV ) can be defined as the ratio of the focal length of the camera lens to the focal length of the cutting lens.
The corresponding magnification factors for the typically-used cutting lenses (with 7.5" focal length) is 1.31.
Since the available space in the carriage was however limited, an extra mirror was introduced in order to respect the focal distance of 250 mm - Chromatic aberration: the optical properties of the lens material are dependent on the wavelength.
Since the dichroic mirror is logically the only component of the monitoring system that might influence the properties of the laser beam, a detailed analysis has been performed to identify this probable influence. 1 The window of interest is a virtual rectangular area within the camera image of which the pixel values are classified by the camera as thermal images.
Online since: August 2018
Authors: Pavel Liška, Barbora Nečasová, Michal Novotný
General material properties of Cetris Basic
Material Properties
Mean Value
Tensile strength perpendicular to board plane
0.6 N/mm2
Shear strength
2.0 N/mm2
Another material subjected to the testing was Siberian larch façade cladding.
General material properties of façade planks from Siberian larch (Larix sibirica) [13] Material Properties Mean Value Tensile strength perpendicular to the grain 1.5 N/mm2 Tensile strength parallel to the grain 12.0 N/mm2 Shear strength 10.0 – 12.0 N/mm2 Table 3.
General material properties of WPC – poplar [15] Material Properties Mean Value Tensile strength perpendicular to board plane N/A Tensile strength after bending 15.0 – 17.0 N/mm2 Shear strength 2.0 N/mm2 Table 5.
General material properties of WPC – beech [16] Material Properties Mean Value Tensile strength perpendicular to board plane 9.0 N/mm2 Tensile strength after bending 15.0 – 17.0 N/mm2 Shear strength 2.0 N/mm2 Methods.
Böhm, Evaluating the influence of moisture content on the mechanical and physical properties of OSB, Dissertation thesis, 2008
General material properties of façade planks from Siberian larch (Larix sibirica) [13] Material Properties Mean Value Tensile strength perpendicular to the grain 1.5 N/mm2 Tensile strength parallel to the grain 12.0 N/mm2 Shear strength 10.0 – 12.0 N/mm2 Table 3.
General material properties of WPC – poplar [15] Material Properties Mean Value Tensile strength perpendicular to board plane N/A Tensile strength after bending 15.0 – 17.0 N/mm2 Shear strength 2.0 N/mm2 Table 5.
General material properties of WPC – beech [16] Material Properties Mean Value Tensile strength perpendicular to board plane 9.0 N/mm2 Tensile strength after bending 15.0 – 17.0 N/mm2 Shear strength 2.0 N/mm2 Methods.
Böhm, Evaluating the influence of moisture content on the mechanical and physical properties of OSB, Dissertation thesis, 2008
Online since: June 2008
Authors: Dun Bing Tang, G.J. Zhang, S. Dai
As a result, certain factors and
constraints, such as cost, time, and physical integration are not taken into account directly by the
axiomatic model [3, 4].
The axiom 1 states that the DPs and FRs are related such that a specific DP can be adjusted to satisfy its corresponding FR without affecting other FRs.
Second, the relations or interactions among design parameters shall be feasible for modular design and the module itself should be feasible as to good properties (such as durability, safety, manufacturability, assembly, cost, etc.), which means that the constituent DPs module can be synthesized in a manner that meets the required properties.
Meanwhile, based on the derived DSM, the product property (PP) can be predicted from related property knowledge.
Denoting the property knowledge p K and the property knowledge domain Γ , we have p DSM PP ∃ ⊆ Γ →::::K
The axiom 1 states that the DPs and FRs are related such that a specific DP can be adjusted to satisfy its corresponding FR without affecting other FRs.
Second, the relations or interactions among design parameters shall be feasible for modular design and the module itself should be feasible as to good properties (such as durability, safety, manufacturability, assembly, cost, etc.), which means that the constituent DPs module can be synthesized in a manner that meets the required properties.
Meanwhile, based on the derived DSM, the product property (PP) can be predicted from related property knowledge.
Denoting the property knowledge p K and the property knowledge domain Γ , we have p DSM PP ∃ ⊆ Γ →::::K
Online since: October 2014
Authors: Xing Zheng Zou, Shu Ping Ge, Hong Wang, Fang Li, Shi Qing Zhang, Rui Tang, Jin Tai Wang, Feng Yu
Then the samples were cut into pieces of 14mm and 2mm.Their impact properties and tesile property were tested.
Results Mechanical property of high nitrogen steel.
Conclusion The mechanical property test results showed that the tensile strength and the yield strength of nickel-free austenitic stainless steel with high nitrogen were obviously higher than that of 316L stainless steel.
[5] Meng, S., et al., The effect of a layer-by-layer chitosan-heparin coating on the endothelialization and coagulation properties of a coronary stent system.
[7] Pertile, L.B., et al., In vivo human electrochemical properties of a NiTi-based alloy (Nitinol) used for minimally invasive implants.
Results Mechanical property of high nitrogen steel.
Conclusion The mechanical property test results showed that the tensile strength and the yield strength of nickel-free austenitic stainless steel with high nitrogen were obviously higher than that of 316L stainless steel.
[5] Meng, S., et al., The effect of a layer-by-layer chitosan-heparin coating on the endothelialization and coagulation properties of a coronary stent system.
[7] Pertile, L.B., et al., In vivo human electrochemical properties of a NiTi-based alloy (Nitinol) used for minimally invasive implants.
Online since: March 2011
Authors: Yan Chyuan Wu, Ho Chang, Kung Ching Cho, He Jun Peng, Tien Li Chen
Wood coating is one of most common coverings used to protect the surface against external factors and to make the natural appearance more prominent.
Kumar (2006) tested the properties of wood surfaces.
Kaygin (2008) compared to various varnish layers properties.
These properties were superior to the same properties for conventional varnishes [5].
After drying at room temperature, the surface properties of the samples were inspected.
Kumar (2006) tested the properties of wood surfaces.
Kaygin (2008) compared to various varnish layers properties.
These properties were superior to the same properties for conventional varnishes [5].
After drying at room temperature, the surface properties of the samples were inspected.
Online since: April 2013
Authors: Gianluca D'Urso, C. Merla, Giancarlo Maccarini
Micro holes in fact, are widely used for example in micro-electromechanical systems (MEMS), serving as channels or nozzles to connect two micro-features, and in micro-mechanical components.
Furthermore, the geometrical and dimensional properties of the micro-holes were analyzed using both optical and scanning electron microscopes.
In [4] Kuppan et al. demonstrated that, in deep hole drilling, the MRR (Material Removal Rate) is influenced by peak current, duty factor and electrode rotation.
Since TR is calculated as a subtraction between two diameters belonging to the same hole (Dtop and Dbottom), the RO does not affect this parameter.
The same analysis was carried out for TR and TWR-RO (the TWR calculated using Dtop and Dbottom subtracted by the RO factor, see Eq. 5).
Furthermore, the geometrical and dimensional properties of the micro-holes were analyzed using both optical and scanning electron microscopes.
In [4] Kuppan et al. demonstrated that, in deep hole drilling, the MRR (Material Removal Rate) is influenced by peak current, duty factor and electrode rotation.
Since TR is calculated as a subtraction between two diameters belonging to the same hole (Dtop and Dbottom), the RO does not affect this parameter.
The same analysis was carried out for TR and TWR-RO (the TWR calculated using Dtop and Dbottom subtracted by the RO factor, see Eq. 5).
Online since: February 2013
Authors: Dagmar Jakubéczyová, Katarina Monkova, Peter Monka
High speed steels have a leading position in the group of tool materials today in regard to their special properties.
These properties are possible to be attained due to a special microstructure, composed of a matrix around 65 HRC and hard primary carbides, rich in molybdenum, tungsten and vanadium.
This may affect the material performance, but can be minimised by post thermal mechanical treatments, at a cost penalty.
A second pressing operation, repressing, can be done prior to sintering to improve the compaction and the material properties.
Zajac et al.: Computer aided in the machining technology, In: Cutting properties of new type of sintered cutting material, Scientific conference, Kosice (1995) 138 – 139
These properties are possible to be attained due to a special microstructure, composed of a matrix around 65 HRC and hard primary carbides, rich in molybdenum, tungsten and vanadium.
This may affect the material performance, but can be minimised by post thermal mechanical treatments, at a cost penalty.
A second pressing operation, repressing, can be done prior to sintering to improve the compaction and the material properties.
Zajac et al.: Computer aided in the machining technology, In: Cutting properties of new type of sintered cutting material, Scientific conference, Kosice (1995) 138 – 139
Online since: August 2004
Authors: Young Hwan Choi, Young Jin Kim, Youn Won Park, Shinobu Yoshimura, Jong Choon Kim, Jae Boong Choi
The
safety of a nuclear power plant, however, has seriously been considered as a threatening factor to the
environment due to the detrimental damage in case of accidents.
Newly developed network based softwares have replaced traditional PC-based sofrwares, and it highly affected the way of business.
Fujita and Kinugawa[9] developed Data-Free-Way, an internet-based information system for material properties used for a nuclear power plant by applying distributed database system.
Huh et al.[10] developed an internet-based database for creep properties, and studied on the direct application of its database to the life evaluation system or expert analysis system.
The developed system covers in-service inspection data, material properties, and component geometry and stress data for an RPV which are usually required for the process of defect assessment.
Newly developed network based softwares have replaced traditional PC-based sofrwares, and it highly affected the way of business.
Fujita and Kinugawa[9] developed Data-Free-Way, an internet-based information system for material properties used for a nuclear power plant by applying distributed database system.
Huh et al.[10] developed an internet-based database for creep properties, and studied on the direct application of its database to the life evaluation system or expert analysis system.
The developed system covers in-service inspection data, material properties, and component geometry and stress data for an RPV which are usually required for the process of defect assessment.