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engine crankshaft
- Fonte1
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Manual of aircraft accident and incident investigation. Part III: investigation. Montreal, 2011. (Doc. 9756 AN/965).
- Contexto
- The endurance limit of a material can be defined as that level of stress below which there is a 50 per cent or less chance of fatigue getting started. Under this type of loading, the stress is generally at a maximum at one point on the outer surface of the piece and a fatigue crack will start here if the stress is above the endurance limit and if it is repeated long enough. Under two-way bending loads, tensile stresses occur on both sides of the neutral axis and, when the stress level and number of loadings are of the right order as before, cracks will start on both sides of the part and progress toward the centre. Rotary bending occurs when a part is rotated while under a bending loading. A typical example of rotary bending would be an engine crankshaft or a railroad axle under service loading.
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