Assignment

Thin-Wall Steel
Pressure-Vessel Results

Spreadsheet

Notice that strain gage A was not zeroed correctly.
Luckily, the slope of the line is all that we are interested in.

Summary of Results

Experimental
Results Values
Predicted from
Thin-wall Theory % Error Values
Predicted from
Thick-wall Theory % Error

Hoop Stress / Pressure 12.91 psi/psi 14.17 psi/psi 9.9% 13.69 psi/psi 5.7%

Axial Stress / Pressure 6.385 psi/psi 7.085 psi/psi 9.9% 6.844 psi/psi 6.7%

Radial Stress / Pressure not measured -1 psi/psi 0 psi/psi

Rosette Offset Angle 20 degrees (measured)
22.02 degrees (calculated)

	Experimental Results	Values Predicted from Thin-wall Theory	% Error	Values Predicted from Thick-wall Theory	% Error
Hoop Stress / Pressure	12.91 psi/psi	14.17 psi/psi	9.9%	13.69 psi/psi	5.7%
Axial Stress / Pressure	6.385 psi/psi	7.085 psi/psi	9.9%	6.844 psi/psi	6.7%
Radial Stress / Pressure	not measured	-1 psi/psi		0 psi/psi
Rosette Offset Angle	20 degrees (measured) 22.02 degrees (calculated)