Figure below shows a pitch roller chain plate, as used on a bicycle chain. It is made of carbon steel, heat-treated to give Sut = 965 MPa and Sy = 758 MPa. All surfaces are comparable to the "machined" category. Since a roller chain cannot transmit compression, the link is loaded in repeated axial tension (load fluctuates between 0 and a maximum force as the link goes from the slack side to the tight side of the chain) by pins that go through the two holes each with 0.125 inch diameter. Estimate the maximum tensile force that would give infinite fatigue life with a safety factor of 1.2, (1 inch=25,4mm). 0.050 in. 글 in. 0.191-in. rad.

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Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.