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Stress Distribution around a circular hole
  1. Why are the windows of an aero plane in elliptical shape and not rectangular?
  2. How will cold rolling affect the yield strength of any material?
  3. What role will addition of carbon play on the yield strength and ultimate strength?
  4. What is the advantage of photoelastic strain measurement in regions close to stress singularities?
  5. How would a compressive stress strain curve vary from a tensile stress strain curve?
  6. Do you think the metal’s temperature will rise when subjected to a destructive tensile test? Why so?
  7. How will the thermal effects influence the readings from the Quarter Bridge strain gages?
  8. Why do we need a strain gage or extensometer to measure the elongation rather than the movement of the UTM cross head?
  9. How does the strain rate affect stress strain curve of a material?
  10. How will the strain gages reading effect with lead wire length?
  11. What are the likely sources of error while performing this experiment to verify stress concentration on Modulus on UTM?

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