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Online since: June 2010
Authors: Il Dong Choi, Sung Gyu Kang, Ji Hyun Jang, Sung Bok Lee, Moon Hi Hong
Fig. 3 is a fatigue test result shown with max stress-number of cycles curve.
Fatigue cracks can initiate easily at slip band, grain boundary and interface between inclusion and matrix.
Fig. 2 Engineering stress-strain curves of samples; a) N and NPB, b) MC and MCPB Fig. 3 Max stress-number of cycles curves of samples; a) N and NPB, b) MC and MCPB Table 3 Comparison of mechanical properties with fatigue limit for NPB and MCPB materials YS [MPa] UTS [MPa] FL [max, MPa] FL/UTS NPB 262 336 305 0.90 MCPB 282 356 355 0.99 -0.05 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0 50 100 150 200 250 300 350 400 + +PB Engineering stress [MPa] Engineering strain [mm/mm] a)))) -0.05 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0 50 100 150 200 250 300 350 400 MC MCPB Engineering stress [MPa] Engineering strain [mm/mm] b)))) 104 105 106 280 300 320 340 360 380 + +PB Max stress [[[[ MPa]]]] +umber of cycles to failure [[[[+f , log10]]]] a)))) 103 104 105 106 280 300 320 340 360 380 MC MCPB Max stress [MPa] +umber of cycles to failure [[[[+f , log10]]]] b)))) Fatigue fracture
Fatigue cracks can initiate easily at slip band, grain boundary and interface between inclusion and matrix.
Fig. 2 Engineering stress-strain curves of samples; a) N and NPB, b) MC and MCPB Fig. 3 Max stress-number of cycles curves of samples; a) N and NPB, b) MC and MCPB Table 3 Comparison of mechanical properties with fatigue limit for NPB and MCPB materials YS [MPa] UTS [MPa] FL [max, MPa] FL/UTS NPB 262 336 305 0.90 MCPB 282 356 355 0.99 -0.05 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0 50 100 150 200 250 300 350 400 + +PB Engineering stress [MPa] Engineering strain [mm/mm] a)))) -0.05 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0 50 100 150 200 250 300 350 400 MC MCPB Engineering stress [MPa] Engineering strain [mm/mm] b)))) 104 105 106 280 300 320 340 360 380 + +PB Max stress [[[[ MPa]]]] +umber of cycles to failure [[[[+f , log10]]]] a)))) 103 104 105 106 280 300 320 340 360 380 MC MCPB Max stress [MPa] +umber of cycles to failure [[[[+f , log10]]]] b)))) Fatigue fracture
Online since: May 2006
Authors: Andrea Karrasch, Sergey Maltsev, Christian Jaeger
coordination number and Q
n group distributions (n number of bridging oxygens of phosphate and/or
silicate groups), but also linkages between like or different groups in the amorphous state.
This most important result leads to the only assumption made for the structural proposal: Given that a grain of sample contains crystalline and amorphous regions, it should be reasonable to assume that there is a crystalline core (HAp) surrounded by an amorphous surface layer.
This most important result leads to the only assumption made for the structural proposal: Given that a grain of sample contains crystalline and amorphous regions, it should be reasonable to assume that there is a crystalline core (HAp) surrounded by an amorphous surface layer.
Online since: June 2012
Authors: Qi Hong Wei, Hong Sheng Wang, Jian Liu, Chong Hai Wang, Rong Liao
They were integrally formed with the matrix after sintering in high temperature, so that the composite material formed a large number of circular air pores.
The mullite formed the glass phase and located into grain boundary.
When the mullite hollow balls were added in the material, density should be sharp decline with a large number of circular air pores.
The mullite formed the glass phase and located into grain boundary.
When the mullite hollow balls were added in the material, density should be sharp decline with a large number of circular air pores.
Online since: January 2013
Authors: R. Coll, J. Bonastre, J. Saurina, J.J. Suñol, L. Escoda, B. Hernando
The average number of valence electrons by atom (e/a) is parameter used characterize these alloys.
It is known that there is a linear correlation between the average number of valence electrons per atom and the martensite start temperature [13].
This is a sign of the fast crystallization and growth kinetics of the alloy, and suggests that heat removal during rapid solidification process induces directional grain growth of the formed crystalline phase.
It is known that there is a linear correlation between the average number of valence electrons per atom and the martensite start temperature [13].
This is a sign of the fast crystallization and growth kinetics of the alloy, and suggests that heat removal during rapid solidification process induces directional grain growth of the formed crystalline phase.
Online since: February 2008
Authors: Sam Yang, Scott Furman, Andrew Tulloh
Although the existing techniques for theoretical and numerical
modeling of material micro-structures [1-7] are successful in simulating the formation and
structures of grains on fine length scales, in most cases, comparisons between model predictions
and experiments could only be made statistically.
However, given the generic nature of the approach and virtually unlimited possibilities in material microstructures due to an endless range of material compositions under a diverse range of formation processes, a large number of experiments will be needed.
It can be expressed mathematically as ( ) ( ) Ni λλλλ v v M v L M i i M i i ,,2,1 ,,, ; 1 ,,1,0 ;10 21 0 , 0 , , L L L = = = = =≤≤ ∑ ∑ = = α αα α α α λµ λµ α (1) where α denotes the compositions; i is the position index of a voxel, iv ,α is the volume-fraction of the α'th composition at location i ; for an x-ray wavelength or particle energy λ, ( )λµi is the total linear-absorption coefficient of the i 'th voxel and ( )λµα is the total linear-absorption coefficient for the α'th composition; and N is the total number of voxels.
However, given the generic nature of the approach and virtually unlimited possibilities in material microstructures due to an endless range of material compositions under a diverse range of formation processes, a large number of experiments will be needed.
It can be expressed mathematically as ( ) ( ) Ni λλλλ v v M v L M i i M i i ,,2,1 ,,, ; 1 ,,1,0 ;10 21 0 , 0 , , L L L = = = = =≤≤ ∑ ∑ = = α αα α α α λµ λµ α (1) where α denotes the compositions; i is the position index of a voxel, iv ,α is the volume-fraction of the α'th composition at location i ; for an x-ray wavelength or particle energy λ, ( )λµi is the total linear-absorption coefficient of the i 'th voxel and ( )λµα is the total linear-absorption coefficient for the α'th composition; and N is the total number of voxels.
Online since: April 2012
Authors: Turgut Gülmez, Mehmet Safa Bodur, Ayhan Durademir
Average grain size were measured 220 µm and 360 µm for grinded hazelnut and peanut shells, respectively.
TS of peanut composites was found to increase until the 3rd reprocessing step while TS of hazelnut composite increased in a linear fusion with increasing number of reprocessing.
However IS of composites was found to increase with increasing number of reprocessing probably because of improvement of the dispersion of fillers.
TS of peanut composites was found to increase until the 3rd reprocessing step while TS of hazelnut composite increased in a linear fusion with increasing number of reprocessing.
However IS of composites was found to increase with increasing number of reprocessing probably because of improvement of the dispersion of fillers.
Online since: February 2014
Authors: Peng Cui, Yang Sang, Bao Quan Li, Hai Xia Zhang
The rotating molding pressure is 600 kpa and the rotation number for Ninitial=9, Ndesign=125 and Nmaximum=205.
Table 3 Water stable performance test results of Marshall (Marshall Specimen molding temperatur155℃) Asphalt-aggregate ratio (%) Stability(kN) (60℃,30min) Residual stability (%) Splitting strength (25℃, MPa) Freeze-thaw split intensity ratio (%) 4.1 12.1 89.3 0.97 88.7 Technical requirements >8.0 >80 / >80 Table 4 Rutting test results Number 45min displacement 60min displacement Dynamic stability (time/ mm) AVG Technical requirements 1 2.381 2.778 1588 1547 >1000 2 1.672 2.163 1284 3 2.730 3.086 1768 Test road construction Temperature control.
Rotate the compaction method design of coarse grain type of proportion of flexible base asphalt sTable research [J].
Table 3 Water stable performance test results of Marshall (Marshall Specimen molding temperatur155℃) Asphalt-aggregate ratio (%) Stability(kN) (60℃,30min) Residual stability (%) Splitting strength (25℃, MPa) Freeze-thaw split intensity ratio (%) 4.1 12.1 89.3 0.97 88.7 Technical requirements >8.0 >80 / >80 Table 4 Rutting test results Number 45min displacement 60min displacement Dynamic stability (time/ mm) AVG Technical requirements 1 2.381 2.778 1588 1547 >1000 2 1.672 2.163 1284 3 2.730 3.086 1768 Test road construction Temperature control.
Rotate the compaction method design of coarse grain type of proportion of flexible base asphalt sTable research [J].
Online since: December 2013
Authors: Yun Xiang Liu, Wan Jun Yu, Hua Fang
The structure of the activity is given such as:
The activity may contain a number of input/output port, constraints and properties.
Analysising the detailed data processin in the AGWL, it provides technical to master AGWL of more fine-grained and to improve AGWL.
CoreGRID Technical Report Number TR-0000[C], Institute on Grid Information and Monitoring Services CoreGRID-Network of Excellence. 2006
Analysising the detailed data processin in the AGWL, it provides technical to master AGWL of more fine-grained and to improve AGWL.
CoreGRID Technical Report Number TR-0000[C], Institute on Grid Information and Monitoring Services CoreGRID-Network of Excellence. 2006
Online since: January 2010
Authors: Dun Wen Zuo, Ming Di Wang, Shi Hong Shi
It is similar to
the skin of the unit, covering the surface of the entity, which will not increase the number of nodes
(except for isolated nodes), only increase the number of units.
So that the grain growth will be different, this is in line with experimental results.
So that the grain growth will be different, this is in line with experimental results.
Online since: October 2011
Authors: Dong Li, Fang Lian, Kuo Chih Chou, Wei Hua Qiu, Fu Shen Li
The morphology suggests that Fe promotes grain refinement, that is, the particle size decrease with an increase of Fe content especially x≥0.4.
a b c d Fig. 3 FESEM images of 0.3Li2MnO3·0.7LiMnxNixFe(1-2x)/2O2(a)x=0.5, (b)x=0.45,(c)x=0.4,(d)x=0.35 Electrochemical properties a b Fig. 4 Discharge and charge capacity vs. cycle number of 0.3Li2MnO3·0.7LiMnxNixFe(1-2x)/2O2 (a)x=0.5,(b)x=0.4.
Moreover, discharge and charge capacity decrease rapidly with the increase of cycle number.
a b c d Fig. 3 FESEM images of 0.3Li2MnO3·0.7LiMnxNixFe(1-2x)/2O2(a)x=0.5, (b)x=0.45,(c)x=0.4,(d)x=0.35 Electrochemical properties a b Fig. 4 Discharge and charge capacity vs. cycle number of 0.3Li2MnO3·0.7LiMnxNixFe(1-2x)/2O2 (a)x=0.5,(b)x=0.4.
Moreover, discharge and charge capacity decrease rapidly with the increase of cycle number.