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Abstract <p>Based on the concept of damaged material and its subsequent failure, an approach to analyzing non-isothermal viscoplastic deformation of “hazardous” zones of long-term engineering structures is presented. The approach allows for consideration of the influence of multi-component stresses and rotation of the principal axes of stress-strain tensors on the rate of damage accumulation; and nonlinear defect accumulation. The purposes of the calculation methods in this approach are: experimental studies of material properties; estimates of the exhausted and remaining service life of engineering structures based on a given loading history; and the mathematical foundations of service life monitoring systems.</p>

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Methods for Diagnosing the Exhausted and Predicting the Remaining Life of Critical Engineering Facilities

  • 期刊论文

  • 发表日期：

    2026年2月1日

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  • L. A. Igumnov,
  • I. A. Volkov,
  • D. N. Shishulin,
  • A. A. Belov

摘要

Abstract

Based on the concept of damaged material and its subsequent failure, an approach to analyzing non-isothermal viscoplastic deformation of “hazardous” zones of long-term engineering structures is presented. The approach allows for consideration of the influence of multi-component stresses and rotation of the principal axes of stress-strain tensors on the rate of damage accumulation; and nonlinear defect accumulation. The purposes of the calculation methods in this approach are: experimental studies of material properties; estimates of the exhausted and remaining service life of engineering structures based on a given loading history; and the mathematical foundations of service life monitoring systems.