A Method of Obtaining Shear Stress-Strain Graphs by Interpretation of Moment-Twist Data

Many requests are made by industry for information from the Fritz Engineering Laboratory at Lehigh University. Among these was one from a manufacturer wishing to increase the strength of his industrial truck axles. The manufacturer was considering several different steels and wanted comparative strength data. The information was compiled by use of shear stress-strain curves. The method described here to obtain the shear stress-strain curves is not new, but is not often used. The procedure is simple to apply and merits the attention of others concerned with comparative strength and shear properties of axial round shafts.