Fatigue growth of small corner cracks in aluminum 6061-T651

Carlson, R. L.; Steadman, D.; Dancila, Dragos; Kardomateas, G. A.

doi:10.1016/s0142-1123(97)00033-9

Cited by 13 publications

(3 citation statements)

References 17 publications

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“…Heat treatment and orientation effects on fatigue crack growth have been studied [9]. Small crack effects, which result in lower threshold values and higher crack growth rates for the same ΔK values, have been investigated [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effects of microstructure on the fatigue crack growth behavior of light metals and design considerations

Gavras

Chenelle

2010

Matéria (Rio J.)

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Fatigue crack growth mechanisms of long and small cracks were investigated in cast and wrought aluminum and titanium alloys with various microstructures (as-cast A535, 6061-T61, and mill-and beta annealed Ti-6Al-4V). In addition, friction stir welded and cold spray processed 6061-T61 were also investigated. The effects of microstructure on the fatigue crack growth response of each material were evaluated. Long crack growth data were generated on compact tension specimens at low and high stress ratios R=0.1 and 0.7, respectively. Small crack growth testing was performed on corner and surface flaw tension specimens at low stress ratio, R=0.1. Fatigue crack growth mechanisms at the microstructural scale of the materials were identified and will be discussed. Closure corrections were applied to long crack growth data, and the results were compared to experimental small crack growth data. Models for small crack growth predictions from long crack growth data will also be presented and discussed.

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Section: Introductionmentioning

confidence: 99%

Effects of microstructure on the fatigue crack growth behavior of light metals and design considerations

Gavras

Chenelle

2010

Matéria (Rio J.)

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“…The fatigue module in MSC uses the three fatigue life prediction methods: total life, crack initiation, and crack propagation. Stress-life method Indentation test Yildiz et al [87] Stress-life method Fretting fatigue test Carlson et al [101] Strain-life method Material properties Navarro et al [102] Linear Fracture Mechanism Fretting fatigue test Alzoubi et al [68] Linear Fracture Mechanism Bending test Sangkla et al [103] Stress-life method Grippers Kolesnikov et al [104] Stress-life method Rails Sliwa et al [105,106] Stress-life method Coatings on steel Dobrzanski et al [107] Stress-life method Coatings on steel Wu et al [64] Stress-life method Ceramic coated steel Tasdemirci and Apalak [108] Stress-life method Indentation test Wei and James [82] Linear Fracture Mechanism Composite materials Sridhar et al [94] Temperature Piston Basecu et al [83] Stress-life method Wheel to wheel contact Bouzaki et al [88][89][90] Strain-life method Indentation test Kanber and Demirhan [93] Contact mechanics Thin to medium coating Majzoobi et al [109] Stress-life method fasteners Strain-life method Rolling and sliding contact Baregetti et al [110] Linear Fracture Mechanism PVD coating Baregetti [111] Linear Fracture Mechanism Coated spur gears Baragetti and Tordini [86] Strain-life method Rotating fatigue test Baragetti and Tordini [112] Strain-life method Spur gears Basecu et al [83] Stress-life method Wear at interface Ma et al [113] Stress-life method Coated carbide drill Miao et al [114] Hardness analysis Indentation test Ronkainen et al [115] Stress-life method Diamond-coated drills Mount [116] Linear Fracture Mechanism Thin-film coating Sheng [78] Contact mechanics Thin polymer films FEMLAB Lakkaraju et al [85] Stress-life method Indentation test Solid Works/Comos M Mituletu et al…”

Section: Fea Software Packages For Fatigue Analysismentioning

confidence: 99%

Fatigue Analysis of Actuators with Teflon Impregnated Coating—Challenges in Numerical Simulation

Kang

Ouyang

2021

Actuators

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Actuators are essential components for motion in machines, and warranty service lives are basic specifications of actuators. However, fatigue damage or wear of actuators are very complex and related to many design factors, such as materials properties, surface conditions, loads, and operating temperature. Actuator manufacturers still rely heavily on physical experiments to determine the fatigue lives of actuators. This paper investigates the state-of-the-art of using numerical simulations for fatigue analysis of mechanical actuators. Failure criteria of machine elements are discussed extensively; existing works on using finite element methods for machine element designs are examined to (1) explore the feasibility of using a numerical simulation for fatigue analysis and (2) discuss the technical challenges in practice. Moreover, a systematic procedure is suggested to predict fatigue lives of mechanical actuators with Teflon impregnated hard coatings. A virtual fatigue analysis allows for optimizing a mechanical structure, reducing design verification costs, and shortening the development time of actuators.

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“…Effective factors on damping for aluminium are frequency, 1,2 amplitude of strain or stress 3,4 and temperature 5 . In addition, damping is affected by corrosion fatigue, 6,7 grain size 8,9 and porosity 2,8 . Damping also depends on number of fatigue cycles in aluminium 10 .…”

Section: Introductionmentioning

confidence: 99%

Material damping in 6061‐T6511 aluminium to assess fatigue damage

Colakoglu

Jerina

2002

Fatigue Fract Eng Mat Struct

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Studies in fatigue can be summarized into two stages, fatigue crack initiation and crack propagation. Fatigue damage may increase the risk of failure under cyclic load. Energy dissipation, termed damping, occurs in engineering metals and is a function of the cyclic loading history. Damping behaviour of materials has been estimated using many different experimental techniques, and parameters i.e. the loss factor vs. strain amplitude, frequency range, etc. However, micro‐structural changes in the form of fatigue damage are also contributors to damping in engineering materials. In order to measure energy dissipation, a damping monitoring method has been used. Under a constant cyclic load up to the point of fatigue crack initiation, the effects of fatigue on damping factor were studied for 6061‐T6511 aluminium alloy. In the experiments, the stress levels were below yield point, 50% and 70% of ultimate strength. Experimental results showed that the damping factor changes with the number of fatigue cycles. Percentage increase in damping energy was calculated using experimental data.

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Fatigue growth of small corner cracks in aluminum 6061-T651

Cited by 13 publications

References 17 publications

Effects of microstructure on the fatigue crack growth behavior of light metals and design considerations

Effects of microstructure on the fatigue crack growth behavior of light metals and design considerations

Fatigue Analysis of Actuators with Teflon Impregnated Coating—Challenges in Numerical Simulation

Material damping in 6061‐T6511 aluminium to assess fatigue damage

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