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Experimental Mechanics

, Volume 10, Issue 2, pp 64–71 | Cite as

Two systems for automatic reduction of time-dependent photomechanics data

The use of the analog method implemented by the electrnic servo system described in this paper is reported to allow accurate translation of the fringe-order history into a stress history
  • Charless W. Fowlkes
Article
  • 29 Downloads

Abstract

Time-dependent photomechanical model materials will not, in general, exhibit a one-to-one relationship between the instantaneous stress and the relative retardation. Due to the complicated nature of this relationship, it is often more accurate to use the analog method of data reduction. This method consists of reproducing the fringe-order history observed in the model in a tensile specimen of the model material and recording the corresponding stress history. Two servo systems are described in this report which may be programmed to produce a desired fringe-order history in a time-dependent tensile specimen.

Keywords

Mechanical Engineer Fluid Dynamics Model Material Data Reduction Tensile Specimen 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Society for Experimental Mechanics, Inc. 1970

Authors and Affiliations

  • Charless W. Fowlkes
    • 1
  1. 1.College of Engineering, Department of Aeronautics and AstronauticsUniversity of WashingtonSeattle

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