Single-strand strainwire technique: Heating and reinforcing effects
- 32 Downloads
This paper is the second of three papers on a refined internal strainwire technique. This paper examines the effect of internally embedded single-strand strainwires, both as reinforcing and as heating elements within a matrix material. To investigate possible reinforcing effects, two identical plates, one containing internal wires and the other without these wires, were examined. The photoelastic-fringe patterns (isochromatics) were photographed to determine if the presence of the wires causes an alteration of the isochromatic patterns.
An investigation of the possible heating effects was accomplished in the same way, only, in this analysis, voltage was passed through the internal gages. To learn more about the heating characteristics of the wire-matrix system, the voltage in the gages was increased until the heating effect manifested itself. Using this technique, it was possible to determine the upper limit of applied voltage. The long-term effects of the applied voltage were also examined.
KeywordsMechanical Engineer Fluid Dynamics Applied Voltage Matrix Material Heat Effect
Unable to display preview. Download preview PDF.
- 1.Serdengecti, S., Hendrickson, J. A. andSkjelbreia, L., “Strain Technique for Measuring Internal Strains in Artificial Solids,”Proc. SESA II (5),129–136 (May1962).Google Scholar
- 2.Sove, R. C., Brasier, R. I. andBaker, W. E., “Selection of Gages for Strain Measurement at Interior Points,”Proc. SESA II (6),189–190 (June1962).Google Scholar
- 3.Yakorley, V. F. andInyutin, I. S., Measurement for Stresses in Machine Components, The Macmillan Book Co., New York (1964).Google Scholar
- 4.Zelonka, J. R., Kline, R. J. andWade, L., “Single-strand Strainwire Technique: Extensions and Refinements,”Experimental Mechanics,10 (12),539–544 (Dec.1970).Google Scholar
- 5.Frocht, M. M., Photoelasticity, v. 1, John Wiley & Sons, Inc., New York (1965).Google Scholar
- 6.Frocht, M. M., Photoelasticity, v. 2, John Wiley & Sons, Inc., New York (1967).Google Scholar
- 7.Clark, A. B. J., “Static and Dynamic Calibration of a Photoelastic Model,”Proc. SESA, XIV (1),195–204 (1956).Google Scholar