The study of staging of the fatigue damage accumulation in the structured titanium samples by acoustic emission method

2017 ◽  
pp. 84-90
Author(s):  
O. V. Bashkov ◽  
◽  
A. A. Popkova ◽  
T. I. Bashkova ◽  
Yu. P. Sharkeev ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Fatigue Damage ◽  
Damage Accumulation ◽  
Acoustic Emission Method ◽  
Emission Method ◽  
Fatigue Damage Accumulation

scholarly journals Characterization of Fatigue Damage in 304L Steel by an Acoustic Emission Method

2013 ◽  
Vol 66 ◽  
pp. 651-660 ◽  
Author(s):  
A. Ould Amer ◽  
A.-L. Gloanec ◽  
S. Courtin ◽  
C. Touze
Keyword(s):  
Acoustic Emission ◽  
Fatigue Damage ◽  
Acoustic Emission Method ◽  
Emission Method ◽  
304L Steel

Acoustic Emission as a Tool of Fatigue Assessment

2006 ◽  
Vol 306-308 ◽  
pp. 271-278 ◽  
Author(s):  
Kyung Seop Han ◽  
Kwang Hwan Oh
Keyword(s):  
Acoustic Emission ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Fatigue Damage ◽  
Acoustic Emission Method ◽  
Emission Method ◽  
Fatigue Assessment ◽  
Emission Parameter ◽  
Acoustic Emission Parameter ◽  
Creep Fatigue

A series of laboratory investigations concerned about fatigue assessment with acoustic emission method was presented. Fatigue aspects including cumulative fatigue damage, fatigue crack growth and creep-fatigue interaction were considered. As a basic approach, residual strength and acoustic emission characteristics of fatigue damaged materials were considered from the nominal stress-life (S-N) viewpoint. Acquired signal indicated that counts emission quantity can be a good measure of cumulated fatigue damage. In the fatigue crack growth approach, interrelationship between acoustic emission parameter and stress intensity factor was examined with different stress level and crack length. Experimental results were somewhat scattered since sensitive characteristics of acoustic emission method. However, their empirical relation indicated that counts rate correlated with fracture mechanics parameter. Finally, acoustic emission application was extended to the creep-fatigue interaction at elevated temperature. Emission response under each damage mode was compared and characterized. Based on these characteristics, creep-fatigue interaction was evaluated by use of acoustic emission parameter. Overall investigations concluded acoustic emission is very effective tool of fatigue assessment.

Use of the acoustic emission method to study fatigue damage to sheet alloy D16AT

1981 ◽  
Vol 13 (8) ◽  
pp. 956-959
Author(s):  
M. D. Banov ◽  
E. A. Konyaev ◽  
V. P. Pavelko
Keyword(s):  
Acoustic Emission ◽  
Fatigue Damage ◽  
Acoustic Emission Method ◽  
Emission Method ◽  
Sheet Alloy ◽  
Alloy D16at

scholarly journals APPLICATION OF ACOUSTIC EMISSION METHOD FOR THE EVALUATION OF THE MICROMECHANICS OF DESTRUCTION OF FIBERGLASS MATERIALS UNDER STATIC LOAD

Aviation ◽  
2020 ◽  
Vol 24 (4) ◽  
pp. 169-176
Author(s):  
Margarita Urbaha ◽  
Konrad Stefański ◽  
Mukharbiy Banov ◽  
Vladimir Shestakov
Keyword(s):  
Acoustic Emission ◽  
Damage Accumulation ◽  
Static Load ◽  
Experimental Studies ◽  
External Environment ◽  
Design Feature ◽  
Acoustic Emission Method ◽  
Emission Method ◽  
Proportional Change ◽  
Two Stages

The paper presents the results of experimental studies using the acoustic emission method of samples made of fiberglass, the design feature of which is the presence of both base fibers and weft fibers. The test data are presented in relative units and the concept of staged damage accumulation is used, which allows one to recognize subtle phenomena of the nature of the destruction of fiberglass. Tests of the samples with a transverse arrangement of fibers with respect to the applied load showed that the fracture process both in the strain parameters and in the parameters of the total acoustic emission has two stages of damage accumulation: the stage of proportional change of these parameters from stress and the stage of intensive increment of these parameters. In this case, the parameter of the total acoustic emission shows that this process of destruction begins earlier by 5–6% than the strain parameter shows. The proposed methodology and equipment allows us to identify the nature of fracture and assess the tensile strength of such a “staged” composition, and also to solve the problem of what affected the structural unity violations, which may be due to the presence of a set of cracks formed during manufacturing or under the influence of stresses and the external environment during the process of loading.

Sign in / Sign up

Export Citation Format

Share Document