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Artem V. Kondratev
Assistant Lecturer, Ph.D.
Saint Petersburg Mining University
Personal or department link
Assistant Lecturer, Ph.D.
Personal or department link
Saint Petersburg Mining University
Saint Petersburg
Russia
34
Total cited
3
Hirsch index

Articles

Electromechanics and mechanical engineering
  • Date submitted
    2020-06-15
  • Date accepted
    2020-06-15
  • Date published
    2020-06-30

Non-destructive testing of multilayer medium by the method of velocity of elastic waves hodograph

Article preview

The method of velocity of elastic waves hodograph, aimed at non-destructive testing of structurally heterogeneous composite materials and products based on them, as well as multilayer products and constructions, is considered. The theoretical basis for determining the propagation velocity of elastic waves in a multilayer medium by the hodograph method is given. Based on the studies, recommendations are given for determining the propagation velocity of elastic waves in each individual layer of a multilayer medium, which allows non-destructive testing of the physicomechanical characteristics of each layer of a multilayer medium. It is shown that in addition to simple multiple reflections in a homogeneous medium, in a multilayer medium with parallel interfaces consisting of two or more layers, complex types of multiple reflected waves and mixed waves (reflected-refracted and refracted-reflected) can arise. The main task of applying the low-frequency ultrasonic method is to determine the acoustic parameters of the propagation of elastic waves (velocities, amplitudes, spectra). The main methods for determining the elastic wave velocities are considered, based on the hodograph equation of the indicated reflected waves in a multilayer medium.

How to cite: Potapov A.I., Kondratev A.V. Non-destructive testing of multilayer medium by the method of velocity of elastic waves hodograph // Journal of Mining Institute. 2020. Vol. 243. p. 348. DOI: 10.31897/PMI.2020.3.348
Instrumentation technology, methods of control and ecology
  • Date submitted
    2013-09-26
  • Date accepted
    2013-11-30
  • Date published
    2014-03-01

Remote monitoringof pipelines usingtelecommunications technology

Article preview

The description ofremotetelecommunications systemof nondestructive testingand diagnosisof corrosionof pipelinesfor various purposes.

How to cite: Potapov I.A., Kondratev A.V. Remote monitoringof pipelines usingtelecommunications technology // Journal of Mining Institute. 2014. Vol. 209. p. 138.