INVESTIGATION OF THE LONGEVITY OF MATERIALS ON THE BASIS OF THE KINETIC CONCEPT OF FRACTURE

2021 ◽  
Vol 62 (1) ◽  
pp. 145-156
Author(s):  
M. G. Petrov
Keyword(s):  
Kinetic Concept

scholarly journals Local stress fields in solids estimated by acoustical emission method

2021 ◽  
Vol 2103 (1) ◽  
pp. 012064
Author(s):  
V L Hilarov ◽  
E E Damaskinskaya
Keyword(s):  
Time Series ◽  
Acoustic Emission ◽  
Stress Field ◽  
Estimation Method ◽  
Local Stress ◽  
Stress Fields ◽  
Emission Method ◽  
Macroscopic Fracture ◽  
Stress Estimation ◽  
Kinetic Concept

Abstract Based on the Zhurkov’s kinetic concept of solids’ fracture a local internal stress estimation method is introduced. Stress field is computed from the time series of acoustic emission intervals between successive signals. For the case of two structurally different materials the time evolution of these stresses is examined. It is shown that temporal changes of these stresses’ accumulation law may serve as a precursor of incoming macroscopic fracture.

A Kinetic Concept of Carbon Dioxide Narcosis

1967 ◽  
Vol 4 (3) ◽  
pp. 205-217 ◽  
Author(s):  
Donald G. McQuarrie
Keyword(s):  
Carbon Dioxide ◽  
Kinetic Concept

A transport kinetic concept for ion uptake by plants

1976 ◽  
Vol 45 (3) ◽  
pp. 659-677 ◽  
Author(s):  
Niels Erik Nielsen
Keyword(s):  
Ion Uptake ◽  
Transport Kinetic ◽  
Kinetic Concept

Kinetic concept of the strength of solids

1984 ◽  
Vol 26 (4) ◽  
pp. 295-307 ◽  
Author(s):  
S. N. Zhurkov
Keyword(s):  
Kinetic Concept

ON THE CALCULATION OF THERMAL TRANSPIRATION

1955 ◽  
Vol 33 (2) ◽  
pp. 279-285 ◽  
Author(s):  
S. Chu Liang
Keyword(s):  
Pressure Difference ◽  
Thermal Transpiration ◽  
Reasonable Approximation ◽  
Single Maximum ◽  
Measured Pressure ◽  
General Fact ◽  
Kinetic Concept

The equation proposed earlier has been derived from a new kinetic concept. It is shown to be a reasonable approximation of this new consideration. The equation is also shown to be mathematically consistent with the general fact that when the thermomolecular pressure difference is plotted against the normally measured pressure, a single maximum is obtained. The curves calculated from this equation are shown to agree closely with those from the Weber equation using van Itterbeek and de Grande's data. The practical use of the equation is discussed.

scholarly journals Влияние водорода на флуктуационное охрупчивание алюминия

2019 ◽  
Vol 45 (17) ◽  
pp. 31
Author(s):  
Д.А. Индейцев ◽  
Е.В. Осипова
Keyword(s):  
Activation Energy ◽  
Hydrogen Embrittlement ◽  
Ab Initio ◽  
Aluminum Atom ◽  
Interstitial Site ◽  
Ab Initio Methods ◽  
Hydrogen Atoms ◽  
Vacancy Generation ◽  
Tetrahedral Voids ◽  
Kinetic Concept

The main processes occurring during vacancy generation in aluminum in the presence of hydrogen are described on the base of ab initio methods using the meta-functional SCAN. It was shown that hydrogen reduces the vacancy generation energy from 2.8 eV to 0.8 eV. In this case, eight hydrogen atoms located in the tetrahedral voids of the lattice around one aluminum atom make it much easier for it to move to the interstitial site. In accordance with the kinetic concept of embrittlement the dependence of the activation energy of hydrogen embrittlement of aluminum is calculated on the concentration of hydrogen and temperature. It is shown that hydrogen reduces the time of aluminum embrittlement only if its concentration in aluminum is more than critical one (~3⋅〖10〗^(-4) at T=293 K).

A transport kinetic concept of ion uptake from soil by plants

1972 ◽  
Vol 37 (3) ◽  
pp. 561-576 ◽  
Author(s):  
Niels Erik Nielsen
Keyword(s):  
Ion Uptake ◽  
Transport Kinetic ◽  
Kinetic Concept
Sign in / Sign up

Export Citation Format

Share Document