Strain localization and failure of disordered particle rafts with tunable ductility during tensile deformation

The products of granular particle are widely used in packaging field. Granular particle products are often transmitted through the sleeve in packaging process. The friction that granular particles suffer affects how granular particles flow in the sleeve. In this paper, the characteristics of friction that granular particles products suffered in the sleeve are analyzed through simulation experiment. The effects of particle size and shape regular extent on friction are also analyzed. Sleeve must have a certain inclination angle in order to make the friction of particles beyond the range of static friction and to make particle flow smoothly in the sleeve.

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Influence of additives on the global mechanical behavior and the microscopic strain localization in wood reinforced polypropylene composites during tensile deformation investigated using digital image correlation

Composites Science and Technology ◽

10.1016/j.compscitech.2008.08.031 ◽

2009 ◽

Vol 69 (2) ◽

pp. 139-146 ◽

Cited By ~ 42

Author(s):

A GODARA ◽

D RAABE ◽

I BERGMANN ◽

R PUTZ ◽

U MULLER

Keyword(s):

Digital Image Correlation ◽

Mechanical Behavior ◽

Digital Image ◽

Strain Localization ◽

Tensile Deformation ◽

Image Correlation ◽

Polypropylene Composites

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Modeling of the Tensile Deformation Behavior of SiCp/Fe Composites

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.217-219.79 ◽

2012 ◽

Vol 217-219 ◽

pp. 79-85

Author(s):

Yao Mian Wang ◽

Huan Ping Yang ◽

Cong Hui Zhang

Keyword(s):

Particle Size ◽

Deformation Behavior ◽

Volume Fraction ◽

Tensile Deformation ◽

Equivalent Inclusion Method ◽

Particle Cracking ◽

Equivalent Inclusion ◽

Tensile Deformation Behavior ◽

The Matrix ◽

Dislocation Strengthening

A combined model taking account of the dislocation strengthening effects and particle cracking during tensile straining based on Eshelby equivalent inclusion method is presented to model the deformation behavior of SiCp/Fe composites. Stress-strain curves of the composites were simulated and it is found that the curves vary obviously with the volume fraction and particle size. The yield stress is increased significantly by increasing the volume fraction and decreasing the particle size. Stress in particles is very high during straining and the fraction of cracked particles increased obviously with increasing the particle size. These results indicate that higher volume fraction and finer particles can give better mechanical properties of the composites attributed to the increased load sharing effect and dislocation strengthening effects of the matrix.

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Experimental and simulation studies of particle size effects on tensile deformation behavior of iron matrix composites

Advanced Composite Materials ◽

10.1080/09243046.2013.812550 ◽

2013 ◽

Vol 22 (5) ◽

pp. 299-310 ◽

Cited By ~ 4

Author(s):

Y.M. Wang ◽

C.H. Zhang ◽

Y.P. Zong ◽

H.P. Yang

Keyword(s):

Particle Size ◽

Size Effects ◽

Deformation Behavior ◽

Tensile Deformation ◽

Matrix Composites ◽

Simulation Studies ◽

Iron Matrix ◽

Particle Size Effects ◽

Tensile Deformation Behavior

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Multi-Dimensional Revealing the Influence Mechanism of the δ Phase on the Tensile Fracture Behavior of a Nickel-Based Superalloy on the Mesoscopic Scale

Materials ◽

10.3390/ma15020610 ◽

2022 ◽

Vol 15 (2) ◽

pp. 610

Author(s):

Qiang Zhu ◽

Linfu Zhang ◽

Chuanjie Wang ◽

Gang Chen ◽

Heyong Qin ◽

...

Keyword(s):

Strain Localization ◽

Volume Fraction ◽

Tensile Deformation ◽

Ageing Time ◽

Image Correlation ◽

Tensile Fracture ◽

Nickel Based Superalloy ◽

Heat Treated ◽

Δ Phase

As the key materials of aircraft engines, nickel-based superalloys have excellent comprehensive properties. Mircotensile experiments were carried out based on in situ digital image correlation (DIC) and in situ synchrotron radiation (SR) technique. The effects of the δ phase on the grain orientation, surface roughening, and strain localization were investigated. The results showed that the average kernel average misorientation (KAM) value of the fractured specimens increased significantly compared with that of the heat-treated specimens. The surface roughness decreased with an increasing volume fraction of the δ phase. The strain localization of specimens increased with the increasing ageing time. The size and volume fraction of voids gradually increased with the increase in plastic strain. Some small voids expanded into large voids with a complex morphology during micro-tensile deformation. The needle-like δ phase near the fracture broke into short rods, while the minor spherical δ phase did not break. The rod-like and needle-like δ phases provided channels for the propagation of the microcrack, and the accumulation of the microcrack eventually led to the fracture of specimens.

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Characterizations of Ag Nanoparticles Prepared by Different Reducing Agents

Advances in Materials Science and Engineering ◽

10.33140/amse/02/01/35 ◽

2018 ◽

Vol 2 (1) ◽

Keyword(s):

Particle Size ◽

Ag Nanoparticles ◽

Leaf Extract ◽

Average Particle Size ◽

Particle Morphology ◽

Reducing Agents ◽

Average Particle ◽

Good Surface ◽

Reducing Ability ◽

Granular Particle

Pure Ag nanoparticles were successfully prepared by using KBH4 , ascorbic acid, and holly leaf extract as reducing agents. The prepared Ag nanoparticles were characterized by various techniques to understand their chemical and physical properties. All the Ag nanoparticles showed granular particle morphology with a nano-scale size of 16.1- 29.2 nm and three visible photoluminescence peaks. By comparison, KBH4 showed sufficient high reducing ability and so resulted in a rapid formation of Ag nanoparticles, largest average particle size, and highest crystallinity. In contrary, holly leaf extract leads to the slowest formation of Ag nanoparticles, smallest average particle size, and lowest crystallinity. The Ag nanoparticles prepared with the KBH4 and holly leaf extract showed the highest and lowest photocatalytic activities, respectively. The crystallinity plays a more important role in photocatalytic activity rather than average particle size. Moreover, some hydroxyls existed on the surface of the Ag nanoparticles exists, indicating a good surface hydrophilicity. Small amounts of the impurities coming from the reducing agent residues acting as a capping layer were found on the surface of the Ag nanoparticles.

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