## Strength of Materials |

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Page 81

The fracture ductility property is normally given as the percent

percent reduction of area. Percent

because it makes a difference how long the original gage length is (for example,

...

The fracture ductility property is normally given as the percent

**elongation**or thepercent reduction of area. Percent

**elongation**is not a reliable measure of ductilitybecause it makes a difference how long the original gage length is (for example,

...

Page 115

The

. 5-1 : PL This formula is advantageous to use in certain problems but not here. It

could not be used if the cross section was not constant or if the material was ...

The

**elongation**is e = f L = 0.006 in. An alternative formula for the**elongation**is Eq. 5-1 : PL This formula is advantageous to use in certain problems but not here. It

could not be used if the cross section was not constant or if the material was ...

Page 117

The calculation of the

uniform over the cross section. A plausible idea is to work with the average strain:

e = f.,.L = ^-±-^L = 0.017 in. Of course, the top layer of the whole bar ...

The calculation of the

**elongation**presents a dilemma because the strains are notuniform over the cross section. A plausible idea is to work with the average strain:

e = f.,.L = ^-±-^L = 0.017 in. Of course, the top layer of the whole bar ...

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angle applied Assume axial beam bending brittle buckling calculated caused column compressive stress concrete Consider constant crack cross section cross-sectional area curvature cyclic cylindrical deflection Determine diameter ductile elastic strain element elongation equations equilibrium EXAMPLE extensometer external load factors of safety failure fatigue fibers fracture free-body diagram ft-lb given GPa Fig hardening horizontal implant increase inertia magnitude maximum shear stress maximum stress metal minimum modulus Mohr's circle neutral axis normal stress notch plane plastic deformation plate plot pole pressure Prob problems psi Fig radius residual stresses rivets shaft shear force shear strain shear strength shown in Fig softening Solution specimen static steel strain gages strength of materials stress and strain stress distribution stress-strain curve temperature tensile stress tension thickness torque torsion tube vertical weight weld wire yield strength zero