Reply by JJohnston

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Posted on Strain or Tension?

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1622 posts in 3289 days

#1 posted 08-18-2012 12:48 AM

I’m not sure what you mean. The blade manufacturer has (probably) an allowable tensile stress on the blade material. That and the cross sectional area determine the allowable tension. The strain is what it is; in this application, it doesn’t seem to me to be important to know it.

I can tell you, for example, where it would be important to. I’m a bridge engineer, and sometimes, we want to know the actual stress on a member in service, so we put strain gauges on it. We measure the strain, and using these relationships between force, area, stress and strain, we can calculate the actual stress on it.

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