On the Effect of Contact Geometry on Fretting Fatigue Life Under Cyclic Contact Loading

2017 ◽  
Vol 65 (4) ◽  
Author(s):  
G. H. Majzoobi ◽  
F. Abbasi
Keyword(s):  
Fatigue Life ◽  
Contact Geometry ◽  
Fretting Fatigue ◽  
Contact Loading

EFFECT OF CONTACT PRESSURE ON FRETTING FATIGUE BEHAVIOR UNDER CYCLIC CONTACT LOADING

2017 ◽  
Vol 24 (Supp02) ◽  
pp. 1850032
Author(s):  
F. ABBASI ◽  
G. H. MAJZOOBI
Keyword(s):  
Fatigue Life ◽  
Contact Pressure ◽  
High Cycle Fatigue ◽  
Fe Simulation ◽  
Fatigue Behavior ◽  
Fretting Fatigue ◽  
Contact Load ◽  
Normal Contact ◽  
Contact Loading ◽  
Crack Initiation Life

In this study, the effect of contact pressure on fretting fatigue behavior of Al7075-T6 under cyclic normal contact loading is investigated. It is found that fretting fatigue life for the case of cyclic contact load was significantly less than that for constant contact load at the same axial and contact load levels, particularly for High Cycle Fatigue (HCF) conditions. The results showed that the fretting fatigue life decreased monotonically with the increase in normal contact load for all axial stresses. Examination of the fretting scars was performed using optical microscopy and numerical simulation was carried out using commercial finite element (FE) codes ABAQUS[Formula: see text] and FRANC2D/L[Formula: see text] to calculate the crack propagation life. The crack initiation life was calculated by a combination of numerical and experimental results. Finally, the FE simulation was validated by a comparison between the numerical crack growth rate and the experimental measurement using replica.

Fretting fatigue of single crystal/polycrystalline nickel subjected to blade/disk contact loading

2005 ◽  
Vol 57 (1) ◽  
pp. 1-9 ◽  
Author(s):  
H. Murthy ◽  
Daniel B. Garcia ◽  
John F. Matlik ◽  
Thomas N. Farris
Keyword(s):  
Single Crystal ◽  
Fretting Fatigue ◽  
Polycrystalline Nickel ◽  
Contact Loading ◽  
Disk Contact

Influence of Wear Properties on Fretting Fatigue Life of a CK45 Alloy and the Al7175 Alloy

2008 ◽  
Vol 587-588 ◽  
pp. 971-975 ◽  
Author(s):  
M. Buciumeanu ◽  
A.S. Miranda ◽  
F.S. Silva
Keyword(s):  
Wear Resistance ◽  
Fatigue Life ◽  
Material Properties ◽  
Fatigue Behavior ◽  
Synergetic Effect ◽  
Fretting Fatigue ◽  
Reduction Factor ◽  
Strength Reduction ◽  
Strength Reduction Factor ◽  
Wear Properties

The main objective of this work was to study the influence of the wear properties of two commercial alloys (CK45 and Al7175) on their fretting fatigue behavior. It is verified the effect of material local degradation by wear on a fatigue strength reduction factor, namely the stress concentration factor, and on the overall fretting fatigue life of these materials. The fretting fatigue phenomenon is a synergetic effect between wear and fatigue. It is dependent on both the fatigue and the wear properties of the materials. Material properties promoting an increase in wear resistance should enhance fretting fatigue life.

Probabilistic fretting fatigue life prediction of Ti–6Al–4V

2010 ◽  
Vol 32 (12) ◽  
pp. 1937-1947 ◽  
Author(s):  
Patrick J. Golden ◽  
Harry R. Millwater ◽  
Xiaobin Yang
Keyword(s):  
Fatigue Life ◽  
Life Prediction ◽  
Fretting Fatigue ◽  
Fatigue Life Prediction

The Effects of Periodic High Loads on Fretting Fatigue

1981 ◽  
Vol 103 (3) ◽  
pp. 223-228 ◽  
Author(s):  
A. Kantimathi ◽  
J. A. Alic
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Life ◽  
Growth Retardation ◽  
Fretting Fatigue ◽  
Fatigue Tests ◽  
Constant Amplitude ◽  
Axial Loads ◽  
Prolonged Fatigue ◽  
Stress Ratios ◽  
Crack Growth Retardation

Fretting fatigue tests have been conducted on 7075-T7351 aluminum alloy coupons with fretting pads of the same material. Three different stress ratios were used, the otherwise constant amplitude axial loads being interrupted every 1000 cycles by either tensile overloads to 400 MPa or compressive underloads to −200 MPa. Tensile overloads greatly prolonged fatigue life for low stresses where the overload ratios were 1.6 and above; compressive underloads had comparatively little effect. The results are discussed in terms of crack growth retardation phenomena.

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