Estimation of Fatigue Crack AE Emissivity Based on the Palmer–Heald Model
Source abstract
Abstract
This article is devoted to materials testing by the acoustic emission (AE) method, which is the analysis of models and diagnostic parameters to assess the probability of detection of a defect in steel structures. The paper proposes to evaluate the emissivity of the material quantitatively by the number and dynamics of the accumulation of acoustic emission impulses. Experimental studies were carried out on pearlitic structural steels, including the loading of samples with fatigue cracks. It was established that the number of AE impulses emitted during loading of an object with a fatigue crack is a random variable corresponding to the normal distribution law. The results show that an estimate of the number of AE impulses emitted during the loading of samples with fatigue cracks can be obtained by distributing the multiplicative parameter D of the Palmer-Heald model by taking into account the maximum value of the applied load.
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Research context
OpenAlex topics: Material Properties and Failure Mechanisms · Ultrasonics and Acoustic Wave Propagation · Engineering Diagnostics and Reliability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Moscow Power Engineering Institute: 14, Krasnokazarmennaya str., 111250 Moscow, Russia
LLC “Interunis-IT”: 20b, Entuziastov sh., 111024 Moscow, Russia
Funding
Ministry of Education and Science of the Russian Federation
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