Fatigue damage accumulation in aluminium and titanium alloys subjected to block program loading under conditions of stress concentration and fretting

The regularities of high-cycle fatigue of aluminium (D16AT, AMg6) and titanium (VT-14) alloys are studied under regular and block program (two-step) loading conditions in the presence of a stress concentration and fretting. It is shown that, according to the linear damage rule (LDR), the magnitudes...

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Published in:International journal of fatigue 1999-03, Vol.21 (3), p.271-279
Main Authors: Troshchenko, V.T, Dragan, V.I, Semenyuk, S.M
Format: Article
Language:English
Subjects:
Aluminium and titanium alloys
Applied sciences
Block program loading
Exact sciences and technology
Fatigue
Fatigue damage accumulation
Fretting fatigue
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Stress concentration
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container_title International journal of fatigue
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creator Troshchenko, V.T
Dragan, V.I
Semenyuk, S.M
description The regularities of high-cycle fatigue of aluminium (D16AT, AMg6) and titanium (VT-14) alloys are studied under regular and block program (two-step) loading conditions in the presence of a stress concentration and fretting. It is shown that, according to the linear damage rule (LDR), the magnitudes of the cumulative damage at fracture under block program loading with stress concentration and fretting are equal to or exceed those for smooth specimens. The degree of this excess is determined by the degree of the influence of the process initiated on the high block step upon the process of the fatigue damage accumulation on the low block step. No difference has been found in the damage accumulated to the nucleation of a crack and to complete failure.
doi_str_mv 10.1016/S0142-1123(98)00080-2
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ispartof International journal of fatigue, 1999-03, Vol.21 (3), p.271-279
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language eng
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source ScienceDirect Freedom Collection
subjects Aluminium and titanium alloys
Applied sciences
Block program loading
Exact sciences and technology
Fatigue
Fatigue damage accumulation
Fretting fatigue
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Stress concentration
title Fatigue damage accumulation in aluminium and titanium alloys subjected to block program loading under conditions of stress concentration and fretting
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