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Your search keyword '"REN Jing"' showing total 28 results
Start Over Author "REN Jing" Journal advanced materials research
28 results on '"REN Jing"'

1. Behavior of Flow Stress of Al-Mn Alloy during Hot Compression

Author

Zheng Ren, Xiu Rong Zhu, Ren Jing, Fu Kui Lian, Zhang Xiao, and Li Qun Hou

Subjects
Stress (mechanics), Materials science, Metallurgy, General Engineering, Dynamic recrystallization, Stress relaxation, Compression (geology), Flow stress, Composite material, Deformation (engineering), Strain rate, Atmospheric temperature range
Abstract

The behavior of flow stress of Al-Mn alloy during hot compression at the condition of ε=0.05,0.5,5,25s-1 while the temperature range from 300°C to 450°C was studied by Gleblee-3500. The results show that the Al-Mn alloy possess the remarkable characteristic of a peak stress, followed by a steady-state flow stress when deformed in the temperature range from 300°C to 450°C with a strain rates range from 0.05s-1 to 0.5s-1.When the strain rate is higher than 5s-1 dynamic recrystallization will happen. The true stress decrease with increasing compression temperature and increases with the increasing strain rate. A constitution equation which can describe the relationship of ε,T and σ is achieved. Also the activation energy for deformation is calculated.

Published
2014
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2. Dynamics of a Bistable Mechanism with Parallel Beams and Permanent Magnets

Author

Jian Zhao, Ren Jing Gao, Yu Huang, and Hong Xi Wang

Subjects
Range (particle radiation), Bistability, Chemistry, business.industry, Dynamics (mechanics), General Engineering, Mechanics, Structural engineering, Mechanism (engineering), Nonlinear system, Reaction, Position (vector), Magnet, business
Abstract

Besides the three main categories of bistable mechanisms such as latch-lock mechanisms, hinged multisegment mechanisms, and residual-compressive-stress buckled beams, a novel unsymmetrical bistable mechanism with a combined structure of permanent magnets and mechanical beams is proposed, and the bistability of such combined structure is analyzed based on the magnetic-charge model and material mechanics theory. The nonlinear combined force during snap-through procedure is calculated accurately, which is in accordance with that obtained by the experiments. The bistable characteristics such as the threshold snapping force, the traveling range, stable positions, and the elastic reaction force at the stable position can be adjusted freely by changing the magnet structure parameters and the relative distance among the three magnets. Finally, the dynamic response is analyzed theoretically and experimentally, which shows that the bistable structure has a good frequency distinguishing capacity for mechanical shock pulses.

Published
2011
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28. Synthesis, Characterization, DNA-Binding Study of C15H12O4N2 and its Lanthanide Complexes

Author

Song, Chao Chao, Liu, Xiang Rong, Zhao, Shun Sheng, Wang, Jun, Ren, Jing Wen, and Li, Kan She

Abstract

A new series complexes of Ln nitrate with H2L, where Ln stands for La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, and H2L is 2-carboxybenzaldehyde- (4-hydroxy) benzoylhydrazone, were synthesized. Elemental analysis and IR spectroscopy were used to characterize and found that the complexes were Ln (HL)2(NO3)·4EtOH·4H2O type. The binding mode of complexes with CTDNA was investigated by UV-Vis titration and emission titration, suggesting that the complexes bind with CTDNA in a non-covalent groove binding mode.

Published
2013
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