Abstract
This experimental study is based on the tubular and beam geometry specimens that represent the automotive stabilizer bars and leaf spring, respectively. The geometries were subjected to quasi-static and fatigue loads at room temperature and low temperatures after environmental conditioning. The effect of material properties and geometry on these structures was investigated experimentally under flexural, that is, three point-bend tests. The influence of flexural modulus, flexural rigidity, flexural strength, and test temperatures on the fatigue strength and life was studied and presented in this chapter. Fatigue limits generally increase with the temperature decreasing toward −40°C for steel and glass/epoxy composite tube structures and beams. The structural properties like flexural rigidity and shape factors were calculated with reference to room temperature and low-temperature testing conditions. These properties are varied and seen to correlate with the observed properties as per the material, geometry, and test conditions. The study also presents an scanning electron microscopy (SEM) fractographic correlation of the observed properties and fracture mechanisms.
Published Version
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