A fishing rod is made of glass-fiber-reinforced plastic in the form of a tube having an outer diameter of 10 mm and a wall thickness of 1.5 mm. The glass fibers are par- allel to the tube axis, so that the bending shear stress is carried by the plastic and the bending stresses are car- ried by the fibers. The fishing rod is 2 m long. Determine whether the rod fails from tensile stresses in the fibers or from shear overstressing in the plastic. The bending strength of the fiber-reinforced plastic is 800 MPa, and its shear strength is 3.2 MPa.

A fishing rod is made of glass-fiber-reinforced plastic in the form of a tube having an outer diameter of 10 mm and a wall thickness of 1.5 mm. The glass fibers are par- allel to the tube axis, so that the bending shear stress is carried by the plastic and the bending stresses are car- ried by the fibers. The fishing rod is 2 m long. Determine whether the rod fails from tensile stresses in the fibers or from shear overstressing in the plastic. The bending strength of the fiber-reinforced plastic is 800 MPa, and its shear strength is 3.2 MPa.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter5: Stresses In Beams (basic Topics)

Section: Chapter Questions

Problem 5.8.1P: The shear stresses t in a rectangular beam arc given by Eq. (5-43): in which Fis the shear force, /...

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