Physical mechanism of polar zone phenomena in cross-coupling arc welding

2020 ◽  
Vol 50 ◽  
pp. 440-449
Author(s):  
Shanwen Dong ◽  
Fan Jiang ◽  
Bin Xu ◽  
Cheng Li ◽  
Shujun Chen
Keyword(s):  
Arc Welding ◽  
Physical Mechanism ◽  
Cross Coupling ◽  
Polar Zone

Photoredox/Pd dual-catalytic three-component cross-coupling

2020 ◽  
Author(s):  
Logan Forshee ◽  
Kaitie Cartwright ◽  
Jon Tunge ◽  
Megan Hegarty
Keyword(s):  
Cross Coupling

Time Dependances of the Resistance Coefficients of Polymeric Materials

INEOS OPEN ◽  
2020 ◽  
Vol 3 ◽  
Author(s):  
A. V. Matseevich ◽  
◽  
A. A. Askadskii ◽  
Keyword(s):  
Time Dependence ◽  
Physical Mechanism ◽  
Polymeric Materials ◽  
Resistance Coefficient ◽  
Constant Stress ◽  
Time To Rupture ◽  
Structure Sensitive ◽  
Material Durability ◽  
Resistance Coefficients ◽  
Extremal Character

One of the possible approaches to the analysis of a physical mechanism of time dependence for the resistance coefficients of materials is suggested. The material durability at the constant stress is described using the Zhurkov and Gul' equations and the durability at the alternating stress—using the Bailey criterion. The low strains lead to structuring of a material that is reflected in a reduction of the structure-sensitive coefficient in these equations. This affords 20% increase in the durability. The dependence of the resistance coefficient assumes an extremal character; the maximum is observed at the time to rupture lg tr ≈ 2 (s).

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