Fatigue and Fracture of Engineering Materials and Structures

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NUMERICAL MODELLING OF A 3D RAIL RCF ‘SQUAT’‐TYPE CRACK UNDER OPERATING LOAD
Fatigue and Fracture of Engineering Materials and Structures - Tập 21 Số 8 - Trang 923-935 - 1998
Stanisław Bogdański, M. Olzak, Jacek Stupnicki
The analysis is based on the 3D FE model of the rail Rolling‐Contact‐Fatigue (RCF) ‘squat’‐type crack, which tends to be common in tracks with high‐speed passengers and mixed traffic. The model incorporates the section of rail and a wheel of real geometry, in which the wheel is rolling over the running band of rail containing the ‘squat’‐type crack. The state of stress in the vicinity of t...... hiện toàn bộ
Mechanism modelling of shot peening effect on fatigue life prediction
Fatigue and Fracture of Engineering Materials and Structures - Tập 33 Số 2 - Trang 116-125 - 2010
Yibing Xiang, Y. Liu
ABSTRACTA new mechanism modelling is proposed in this paper to explain the shot peening effect on fatigue life predictions of mechanical components. The proposed methodology is based on the crack growth analysis of shot peened specimens, which are affected by the interaction of surface roughness and residual stress produced during the shot peening process. An asymp...... hiện toàn bộ
Fatigue design of structures under thermomechanical loadings
Fatigue and Fracture of Engineering Materials and Structures - Tập 25 Số 12 - Trang 1199-1206 - 2002
Éric Charkaluk, A. Bignonnet, Andréï Constantinescu, K. Dang Van
ABSTRACTThis paper presents a global approach to the design of structures that experience thermomechanical fatigue loading, which has been applied successfully in the case of cast‐iron exhaust manifolds. After a presentation of the design context in the automotive industry, the important hypotheses and choices of this approach, based on a thermal 3D computation, an...... hiện toàn bộ
A new energy‐based isothermal and thermo‐mechanical fatigue lifetime prediction model for aluminium–silicon–magnesium alloy
Fatigue and Fracture of Engineering Materials and Structures - Tập 36 Số 12 - Trang 1323-1335 - 2013
G.H. Farrahi, Mohammad Azadi, George Winter, Wilfried Eichlseder
ABSTRACTIn this paper, a new fatigue lifetime prediction model is presented for the aluminium–silicon–magnesium alloy, A356.0. This model is based on the plastic strain energy density per cycle including two correction factors in order to consider the effect of the mean stress and the maximum temperature. The thermal term considers creep and oxidation damages in A3...... hiện toàn bộ
CASTING DEFECTS AND THE FATIGUE BEHAVIOUR OF AN ALUMINIUM CASTING ALLOY
Fatigue and Fracture of Engineering Materials and Structures - Tập 13 Số 3 - Trang 213-227 - 1990
Malcolm J. Couper, A. E. Neeson, John R. Griffiths
Abstract— The fatigue properties of un‐notched polished specimens of an aluminium casting alloy have been measured for various heat‐treatment conditions and at various mean stresses. The relation between fatigue life and alternating stress is insensitive to heat‐treatment and, apparently, to mean stress. It was observed that failure initiated at interdendritic shrink...... hiện toàn bộ
A NON‐LINEAR CONTINUOUS FATIGUE DAMAGE MODEL
Fatigue and Fracture of Engineering Materials and Structures - Tập 11 Số 1 - Trang 1-17 - 1988
Jean‐Louis Chaboche, Priscille Lesne
Abstract— ‐A non‐linear cumulative fatigue damage model proposed previously is applied to different steels and various loading situations, including two‐level tests and block‐programs. Its ability to describe all the main features of fatigue damage and the ease of its practical use for engineers are discussed and several examples cited. The relationship with other fo...... hiện toàn bộ
AN UNDERSTANDING OF FATIGUE THRESHOLDS THROUGH THE INFLUENCE OF NON‐METALLIC INCLUSIONS IN STEEL
Fatigue and Fracture of Engineering Materials and Structures - Tập 4 Số 1 - Trang 79-95 - 1981
I.C. Mayes, T. J. Baker
Abstract —In recent years the low fatigue growth rate regime has been the subject of extensive study revealing its complex and often seemingly inconsistent nature. The value of alternating stress intensity at threshold ΔKTh) is sensitive to a range of variables which include mean stress, stress history, monotonie and cy...... hiện toàn bộ
A FATIGUE CRACK CLOSURE MECHANISM IN TITANIUM
Fatigue and Fracture of Engineering Materials and Structures - Tập 1 Số 1 - Trang 135-148 - 1979
N. Walker, C.J. Beevers
Abstract— Fatigue crack closure in commercial titanium has been investigated by examining the crack profile using a two‐stage replica technique and by monitoring the crack raouth opening displacement. The replicas show that when closure occurs the crack does not close back from the crack tip but at discrete contact points along the crack faces. The observed closure m...... hiện toàn bộ
Fatigue performance of metallic reverse‐bent joints
Fatigue and Fracture of Engineering Materials and Structures - Tập 32 Số 9 - Trang 704-712 - 2009
Guido Fessel, James Broughton, N.A. Fellows, J.F. Durodola, A. R. Hutchinson
ABSTRACTAdhesively bonded lap shear joints have been investigated widely and several ideas have been proposed for improving joint strength by reducing bondline stress concentrations. These include application of adhesive fillets at the overlap ends and use of adhesive with graded properties in the overlap area. Another, less common, approach is to deform the substr...... hiện toàn bộ
Fatigue performance of a bonded wavy composite lap joint
Fatigue and Fracture of Engineering Materials and Structures - Tập 27 Số 5 - Trang 413-422 - 2004
Qicheng Zeng, C.T. Sun
ABSTRACTA novel wavy lap joint design was further studied. Our previous studies using cross‐ply composite adherends showed that the new design was indeed much stronger than the conventional flat joint. In order to fully demonstrate advantage of the new wavy lap joint over the conventional single lap joint, comparative fatigue tests were performed to determine the d...... hiện toàn bộ
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