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Vibratory Stress Relief: A Fundamental Study of Its Effectiveness

1980; American Society of Mechanical Engineers; Volume: 102; Issue: 2 Linguagem: Inglês

10.1115/1.3224793

1528-8889

Raymond Dawson, D G Moffat,

Metal and Thin Film Mechanics

Techniques have been devised for inducing consistent residual stress distributions into cantilever beams and for measuring their variation through the section. Commercial vibratory stress relief procedures have been simulated using a laboratory shaker, and it has been shown that resonant vibration techniques are capable of producing almost complete surface stress relief in specimens of hot rolled mild steel, cold drawn mild steel, and an aluminium alloy. The variables involved in the process are examined and conclusions are reached regarding cyclic strain amplitudes, cycle numbers, and frequency and fatigue effects.