Our portfolio in 2022
List of publications in 2022, in which our clients describe examples of the use of our company's products:
E.A. Burda, G.V. Zusman, I.S. Kudryavtseva, A.P. Naumenko (Federal State Educational Institution of Higher Education, Omsk State Technical University, Omsk; Vibration Measurement Solutions, Inc., Houston, TX, USA). An Overview of Vibration Analysis Techniques for the Fault Diagnostics of Rolling Bearings in Machinery. Shock and Vibration. Vol. 2022, Article ID 6136231. 2022. DOI: 10.1155/2022/6136231 (full text). https://www.hindawi.com/journals/sv/2022/6136231/ (full text)
AbstractThe perfection of methods and means of nondestructive testing and technical diagnostics is determined by the level of development of science and modern industrial technologies. The desire to develop technologies determines the extent and degree to which the monitoring of the state of substances, materials, products—and now the state of the natural environment—are becoming increasingly relevant. The methods and means of condition monitoring and the diagnostics of rolling bearings have been in development for more than 60 years. Despite some successes, however, there is currently no information concerning the veracity of means to completely resolve the bearing diagnostics problem. This paper provides a fairly brief overview of methods and means for monitoring the condition and diagnosis of rolling bearings and also describes one of the newest trends in this field—the analysis of the properties of the characteristic function of vibroacoustic (VA) signals in order to determine the condition of the objects of control and, in particular, rolling bearings. It is shown that the magnitude of the module and the area of the characteristic function of the VA signal are very effective criteria for assessing the technical condition of a rolling bearing.
Marchenkov A., Zhgut D., Moskovskaya D., Kulikova E., Vasiliev I., Chernov D., Mishchenko I. (Institute of Information Technologies and Computer Science, Moscow Power Engineering Institute; Mechanical Engineering Research Institute, Russian Academy of Sciences). Estimation of acoustic source positioning error determined by one-dimensional linear location technique. Applied Sciences (Switzerland). 2022. Vol. 12. No 1. DOI 10.3390/app12010224. https://www.mdpi.com/2076-3417/12/1/224 (full text). eLibrary ID: 47546490
AbstractThe one-dimensional (1D) linear location technique has been considered as one of the methods for determining the position of acoustic emission (AE) sources in metallic objects. However, this approach does not take into account the heterogeneity of materials and that leads to poor accuracy of AE sources localization. To estimate the positioning error of the linear location technique which is typically used to determine the AE source location a new approach based on the combination of experimental and simulation methods is proposed. This approach for error estimation contains a finite element model construction of the AE signals localization. The model consists of transmitting and receiving transducers mounted on the test object, the frequency response of which selected close to the characteristics of acoustic emission transducers applied in the preliminary experiments. The application of the approach in current research showed that a reduced positioning error on a flat steel plate reaches 15%. The proposed technique can be used to optimize the number of preliminary tests required to calculate the reduced error of the 1D linear location technique applied for the AE sources localization during the inspection of the structure
N. A. Makhutov, I. E. Vasil’ev, D. V. Chernov, V. I. Ivanov, E. V. Terent’ev (Mechanical Engineering Research Institute, Russian Academy of Sciences, Moscow; Scientific Research Institute of Introscopy (ZAO NIIIN MNPO Spektr), Moscow; Moscow Power Engineering Institute, Moscow). Adaptation of Methodology for Monitoring Damage Kinetics and Assessing Load-Bearing Capacity in Relation to Steel Products. Russ J Nondestruct Test 58, 800–813 (2022). DOI: 10.1134/S1061830922090078
AbstractThe methodology for monitoring damage kinetics and assessing the bearing capacity of structures using acoustic emission (AE), developed in relation to products made of polymer composite materials (PCM), has been adapted to the evolution of structural steel failure. Due to the higher plasticity of structural steels compared to PCMs, the relative energy (Ep) of AE pulses generated during the rupture of structural bonds at the same scale level turned out to be approximately 5–15 dB lower than in composites. Therefore, during the AE diagnostics of structural steel products, the following boundaries of the separation of AE pulses into energy clusters are established: Ep < 80 dB for the low cluster, Ep = 80–100 dB for the medium cluster, and Ep > 100 dB for the high cluster. We consider testing of the methodology for monitoring the kinetics of damage and assessing the load-bearing capacity of products in the loading mode during static and cyclic tests of samples made of 08Kh18N10T steel with an edge-cut notch.
Novikov E.A., Klementev E.A. Acoustic-emission method for controlling changes in the stability of a soil massif treated with hardening substances. Russian patent № 2775159. eLibrary ID: 49200040
AbstractField: engineering and geological surveys. Substance: invention relates to engineering and geological surveys, in particular to methods for determining changes in the stability of soil foundations subjected to chemical-physical fixing. In the claimed method, emitters of elastic waves and probes are placed in the soil base, each of which contains a heating element, a receiving acoustic transducer and a thermometer. Additionally, other sensors, such as pressure sensors, can be placed in the probes. Soil samples are taken from the examined massif and cured using the same technology that was used to strengthen the massif. On such samples, the correspondence of the AE parameters to the stages of the deformed state of the soil and its characteristics is established according to standardized methods, for example, according to GOST 21153.2. With the help of probes, the soil mass is cyclically heated and acoustic emission (AE) is recorded, both stimulated in the geoenvironment by heating, and when it is sounded by elastic waves. The values of the activity and duration of the Dimp ofAE pulses are determined, averaged over the time of heating the soil to the operating temperature М[DIimp(х)] and for part of the exposure interval at this temperature М[DIIimp(x)]. The values of the amplitude Aimp, the number of spikes in the pulse Vimp, the energy of the source Esour of the signals passing through the ground are determined, averaged over the sounding time M[Aimpref(0)], M[Vimpref(0)], М[Esourref(0)] of the soil by elastic waves before its first heating and for the interval of sounding M[Aimpmes(x)], M[Vimpmes(x)], М[Esourmes(х)], produced in each cycle of holding the soil at operating temperature after the registration of the Dimp values used to determine M[DIIimp(x)]. The indicator Rtgrneu(x) is calculated: . Comparing the full-scale values of Rtgrneu(x) with each other and with the values of Rtgrneu(L) obtained on the samples and the corresponding results of their tests according to standardized methods, the change in the stability of the soil mass is judged. Effect: expanding the functionality of the method by providing the ability to determine the change in the stability of the soil mass treated with hardening substances, containing the foundations intended for placing buildings and structures on them, and increasing the performance of monitoring the state of the geoenvironment by the method for acoustic emission.