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Changes in mechanical properties of vehicle components after strengthening under low‐amplitude loads below the fatigue limit
Author(s) -
XI L.,
SONGLIN Z.
Publication year - 2009
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.2009.01391.x
Subject(s) - fatigue limit , materials science , axle , composite material , structural engineering , amplitude , limit (mathematics) , hardness , engineering , mathematical analysis , physics , mathematics , quantum mechanics
Changes in the mechanical properties of vehicle components were investigated after strengthening under low‐amplitude loads below the fatigue limit (SLAL). The strengths of vehicle components including fatigue strength, static strength and yield strength were significantly increased by SLAL. The surface hardness of the front axle, composed of a kind of low strength steel without heat treatment, was enhanced with increased strengthening and damaging. The change of surface hardness was reversed completely for the transmission gear, composed of a kind of high strength steel with surface heat treatment. The natural frequency of the transmission gear was appreciably increased by SLAL.