Experimental Mechanics

, Volume 8, Issue 3, pp 107–114 | Cite as

Experimental procedures for low-cycle-fatigue research at high temperatures

Experimental approach is described for testing laboratory specimens of the hourglass type using servocontrolled, hydraulic testing machines
  • T. Slot
  • R. H. Stentz
Article

Abstract

Testing procedures are reported for lowcycle-fatigue experiments on hydraulic fatigue machines operated with closed-loop servocontrol of the strain in inductively heated test specimens of the hourglass type. Typical equipment performance data and fatigue-test results are presented.

Keywords

Fatigue Mechanical Engineer Fluid Dynamics Test Specimen Performance Data 

Nomenclature

Δ

symbol denoting range (double amplitude)

ε

axial strain

εp

plastic component of axial strain

εe

elastic component of axial strain

εd

diametral strain

εdp

plastic component of diametral strain

εede

elastic component of diametral strain

σ

axial stress

νe

Poisson's ratio for elastic deformation

νp

Poisson's ratio for plastic deformation

E

modulus of elasticity

T

temperature

Nf

number of cycles to complete fracture

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References

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    Smith, R. W., Hirschberg, M. H. and Manson, S. S., “Fatigue Behavior of Materials Under Strain Cycling in Low and Intermediate Life Range,” NASA TND-1574, NASA Lewis Research Center (April 1963).Google Scholar
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  8. 8.
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Copyright information

© Society for Experimental Mechanics, Inc. 1968

Authors and Affiliations

  • T. Slot
    • 1
  • R. H. Stentz
    • 1
  1. 1.Nuclear Materials and Propulsion OperationGeneral Electric Co.Cincinnati

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