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Calculation of Fiber elongation as per UCS 79D

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Merzi

Merzi

Mechanical
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Dec 12, 2002
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The extreme fiber elongation as per the formula given in UCS 79D.

what should be the value of t ( minimum or nominal)
what should be computed for Rf (mean kunckle radius)
 
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Merzi, I would take t as nominal, Rf will depend on the style of head under consideration. It would be approx 17% of skirt ID for a 2:1 elliptical per UG-32 (d), or various radii for torispherical, see UG-32 (e) and Appendix 1-4 (d).

Maybe contact your head supplier. It is fairly common for them to form at normalizing temps rather than cold form. Check and see.

Regards,

Mike
 
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