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<p>This paper elaborated and applied an experimental technique to study the residual strength of a polymer composite material for a cylindrical shell, a model of a fuel tank. It takes into account the shell manufacturing technology and, accordingly, the essential radial and axial anisotropies. For evaluating the radial component of residual strength, the tensile tests of ring specimens cut from preloaded model shells were used. The experimental procedure was tested by studying the stress-strain state of ring specimens: compression followed by tensile fracture, short-term heating to 300°C with simultaneous compression loading, heating to 200 and 300°C with a 30-minute hold, and cyclic loading of 100 cycles. Of the four types of cyclic preloading, heating to 300°C has the greatest effect on the composite’s residual strength, with the ultimate strength decreasing by 21% compared to the initial material.</p>

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Residual Strength of a Thin-Walled Polymer Composite Shell Structure After Model Operating Loads

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • K. P. Buiskykh,
  • L. V. Kravchuk,
  • S. P. Mudryk,
  • I. I. Derevyanko,
  • V. M. Kharchenko

摘要

This paper elaborated and applied an experimental technique to study the residual strength of a polymer composite material for a cylindrical shell, a model of a fuel tank. It takes into account the shell manufacturing technology and, accordingly, the essential radial and axial anisotropies. For evaluating the radial component of residual strength, the tensile tests of ring specimens cut from preloaded model shells were used. The experimental procedure was tested by studying the stress-strain state of ring specimens: compression followed by tensile fracture, short-term heating to 300°C with simultaneous compression loading, heating to 200 and 300°C with a 30-minute hold, and cyclic loading of 100 cycles. Of the four types of cyclic preloading, heating to 300°C has the greatest effect on the composite’s residual strength, with the ultimate strength decreasing by 21% compared to the initial material.