Failure Mode and Fatigue Behavior of Ultrasonic Spot Welds with Adhesive in Lap-Shear Specimens of Magnesium and Steel Sheets

2013 ◽  
Vol 6 (2) ◽  
pp. 279-285 ◽  
Author(s):  
Wei-Jen Lai ◽  
Jwo Pan ◽  
Zhili Feng ◽  
Michael Santella ◽  
Tsung-Yu Pan
Keyword(s):  
Failure Mode ◽  
Fatigue Behavior ◽  
Spot Welds ◽  
Steel Sheets ◽  
Lap Shear

Fatigue Behavior of Dissimilar Ultrasonic Spot Welds in Lap-Shear Specimens of Magnesium and Steel Sheets

2011 ◽  
Vol 4 (1) ◽  
pp. 581-588 ◽  
Author(s):  
Teresa J. Franklin ◽  
Jwo Pan ◽  
Michael Santella ◽  
Tsung-Yu Pan
Keyword(s):  
Fatigue Behavior ◽  
Spot Welds ◽  
Steel Sheets ◽  
Lap Shear

Fatigue Behavior of Magnesium AZ31 in Friction Stir Spot Welds

2009 ◽  
Author(s):  
J. B. Jordon ◽  
M. F. Horstemeyer ◽  
H. Badarinarayan ◽  
J. Grantham
Keyword(s):  
Fatigue Life ◽  
Crack Growth ◽  
Fatigue Behavior ◽  
Spot Welds ◽  
Friction Stir ◽  
Lap Shear ◽  
Magnesium Az31 ◽  
Electron Microscopes ◽  
Scanning Electron Microscopes ◽  
Crack Growth Modeling

In this study, the fatigue behavior of AZ31 magnesium friction stir spot welded joints is experimentally investigated. The friction stir spot welds employed here are representative of preliminary welds made in developing the joining process for potential use in automobile manufacturing. Load control cyclic tests were conducted on single weld lap-shear coupons and were fatigued until failure to determine stress-life properties. The fractured coupons were examined under optical and scanning electron microscopes with the intent to determine fatigue crack characteristics. Fractography analysis suggests that long crack growth accounts for a majority of the fatigue life. To predict the fatigue life of the lap-joint coupons, a long crack growth modeling approach, based on a kinked crack stress intensity solution, was employed. The fatigue model predictions compared well to the experimental stress-life results.

Investigation of Failure Mode and Fatigue Behavior of Flow Drill Screw Joints in Lap-Shear Specimens of Aluminum 6082-T6 Sheets

2016 ◽  
Vol 9 (3) ◽  
pp. 746-750 ◽  
Author(s):  
Seung Hoon Hong ◽  
Frank Yan ◽  
Shin-Jang Sung ◽  
Jwo Pan ◽  
Xuming Su ◽  
...  
Keyword(s):  
Failure Mode ◽  
Fatigue Behavior ◽  
Lap Shear

Fatigue behavior of friction spot welds in lap shear specimens of AA5754 and Ti6Al4V alloys

2016 ◽  
Vol 91 ◽  
pp. 149-157 ◽  
Author(s):  
A.H. Plaine ◽  
U.F.H. Suhuddin ◽  
N.G. Alcântara ◽  
J.F. dos Santos
Keyword(s):  
Fatigue Behavior ◽  
Spot Welds ◽  
Lap Shear
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