Method of evaluating and predicting the limiting state of heat-resistant alloys under asymmetric high-cycle loading

1979 ◽  
Vol 11 (12) ◽  
pp. 1355-1360
Author(s):  
I. I. Ishchenko ◽  
V. P. Golub ◽  
B. N. Sinaiskii ◽  
A. D. Pogrebnyak
Keyword(s):  
Limiting State ◽  
Heat Resistant ◽  
Cycle Loading

scholarly journals Rating of the limiting state of 20K steel under low-cycle loading using the using the method of LM-hardness

2021 ◽  
Author(s):  
P. Bulakh ◽  
Volodymyr Shvets ◽  
О. Maslo
Keyword(s):  
Residual Life ◽  
Structural Elements ◽  
Structural Element ◽  
Limiting State ◽  
Current State ◽  
Scattered Damage ◽  
Cycle Loading ◽  
Non Destructive ◽  
Degree Of Degradation ◽  
Methods Of Control

In the express diagnostics of the condition of the material of the elements of the structures in operation and the materials for the manufacture of the responsible elements of the equipment, it is necessary to take into account the current damage. At the same time, non-destructive methods of control are more relevant, which allow to assess the level of scattered damage in the material and the degree of degradation of its structure of the metal. Another important factor in controlling the current state of the material is the assessment of the residual life of the structural element under operating loads. This paper presents the results of research on the application of the non-destructive method of LM-hardness in assessing the characteristics of the limiting state of the material of real structural elements operating under low-cycle load.

ANISOTROPY OF LOW CYCLE FATIGUE CHARACTERISTICS OF SINGLE-CRYSTAL HEAT-RESISTANT NICKEL ALLOYS

2020 ◽  
pp. 97-105
Author(s):  
I.A. Hodinev ◽  
◽  
S.A. Monin ◽  
Keyword(s):  
Single Crystal ◽  
Nickel Alloys ◽  
Endurance Limit ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
Heat Resistant ◽  
Cycle Loading ◽  
Two Temperatures ◽  
Fatigue Characteristics ◽  
Complete Deformation

The low cycle fatigue of heat-resistant nickel alloys with a single crystal structure VZHM7 and VIN3 was studied. The tests were carried out under conditions of monitoring the complete deformation in the cycle, loading of the type «tension-compression» occurred according to a sinusoidal law with a frequency of 0,5 Hz. For both alloys, tests were carried out for three crystallographic orientations ([001], [011], [111]) at two temperatures: 500 and 850 °C. Regression lines were constructed, the limits of limited endurance were found on the basis of 104 cycles. The influence of test temperature and crystallographic orientation on the endurance limit of alloys and RMS is analyzed.

Numerical analysis of the features of limiting state of welded pipeline elements under ultra-low-cycle loading conditions

2021 ◽  
Vol 2021 (1) ◽  
pp. 29-34
Author(s):  
O.V. Makhnenko ◽  
◽  
O.S. Milenin ◽  
O.A. Velykoivanenko ◽  
G.P. Rozynka ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Loading Conditions ◽  
Limiting State ◽  
Cycle Loading

Numerical analysis of the features of limiting state of welded pipeline elements under ultra-low-cycle loading

2021 ◽  
Vol 2021 (1) ◽  
pp. 32-37
Author(s):  
O.V. Makhenko ◽  
◽  
O.S. Milenin ◽  
O.A. Velikoivanenko ◽  
G.P. Rozynka ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Limiting State ◽  
Cycle Loading
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