An Experimental Investigation of Fretting Fatigue with Spherical Contact in 7075-T6 Aluminum Alloy

2008 ◽  
pp. 213-213-15 ◽  
Author(s):  
BU Wittkowsky ◽  
PR Birch ◽  
J Domínguez ◽  
S Suresh
Keyword(s):  
Experimental Investigation ◽  
Aluminum Alloy ◽  
Fretting Fatigue ◽  
Spherical Contact

Experimental Investigation on Hydromechanical Deep Drawing of Aluminum Alloy with Heated Media

2012 ◽  
Vol 83 (3) ◽  
pp. 230-237 ◽  
Author(s):  
Lihui Lang ◽  
Baosheng Liu ◽  
Tao Li ◽  
Xiangni Zhao ◽  
Yuansong Zeng
Keyword(s):  
Experimental Investigation ◽  
Aluminum Alloy ◽  
Deep Drawing ◽  
Hydromechanical Deep Drawing

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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