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Dynamic Modulus of Elasticity of Concrete01:16

Dynamic Modulus of Elasticity of Concrete

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Updated: May 10, 2026

Mechanical Expansion of Steel Tubing as a Solution to Leaky Wellbores
09:32

Mechanical Expansion of Steel Tubing as a Solution to Leaky Wellbores

Published on: November 20, 2014

Improved expanding ring technique for determining dynamic material properties.

M Z Liang1, X Y Li, J G Qin

  • 1College of Science, National University of Defense Technology, 410073 Changsha, People's Republic of China. mzliang@nudt.edu.cn

The Review of Scientific Instruments
|July 5, 2013
PubMed
Summary
This summary is machine-generated.

A new projectile-based expanding ring technique determines dynamic material properties under uniform tensile loading. This method overcomes limitations of explosive and electromagnetic techniques for high strain rate material characterization.

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Experimental Physics

Background:

  • Current expanding ring techniques (explosive, electromagnetic) have practical limitations.
  • Accurate determination of dynamic material properties requires uniform loading conditions.
  • High strain rate material behavior is crucial for many engineering applications.

Purpose of the Study:

  • To develop an improved expanding ring experimental technique.
  • To achieve uniform one-dimensional tensile loading conditions.
  • To overcome limitations of existing dynamic material property testing methods.

Main Methods:

  • Utilized lateral impact loading from a low-density projectile.
  • Applied the technique to 1100-0 aluminum rings.
  • Achieved uniform uniaxial stress conditions at high stress rates.

Main Results:

  • Demonstrated a convenient and effective method for dynamic material property testing.
  • Successfully approximated uniform one-dimensional tensile loading.
  • Generated high stress rates suitable for material characterization.

Conclusions:

  • The projectile-based expanding ring technique is a viable alternative for dynamic material property determination.
  • This method offers improved uniformity and practicality over existing techniques.
  • The technique is effective for characterizing materials like 1100-0 aluminum at high strain rates.