creator: Robert J. Connor date: 2015
Total is 5 Results
Active Out-of-Plane Distortion Cracking at a Girder Web Gap
10.4231/R7125QKV
Julie Whitehead, Luke Snyder, Robert J. Connor
06/03/2015
This video illustrates out-of-plane distortion cracking at a transverse stiffener detail in the laboratory. The applied displacements shown are much greater than would be expected in an actual bridge; however, the cracking is identical to what would be...
Civil Engineering fatigue cracking out-of-plane distortion cracking
Brittle Fracture and Propagation of Crack in a Box Girder
10.4231/R78K7710
Robert J. Connor Teresa Washeleski
06/03/2015
This video illustrates a brittle fracture which occurs in a laboratory test of a bridge girder from a retired railroad flat car. The girder was notched and cooled using liquid nitrogen to well below -100F to ensure the steel was on the lower shelf. Loa...
Brittle Fracture in Cover Plate of Riveted Built-up Bridge Girder Illustrating Member Redundancy
10.4231/R7MS3QPZ
Cem Korkmas, Matt Hebdon, Robert J. Connor
06/12/2015
This video shows a test in the laboratory in which a 1-inch-thick cover plate was fractured. During the test, the specimen was cooled to -80F to ensure that all materials were on the lower shelf. Then, load was applied to a stress of 0.55Fy, but no fra...
brittle fracture Civil Engineering girder fracture member-level redundancy
Out-of-Plane Distortion Crack Growth at a Girder Web Gap (Time-Lapse)
10.4231/R7W9573Z
Julie Whitehead, Luke Snyder, Robert J. Connor
06/03/2015
This video illustrates the growth of a fatigue crack at a detail susceptible to out-of-plane distortion cracking. (Note: Cracking is not observed until after 70,000 cycles are applied.) As expected, once cracking is initiated, growth is relatively fast...
Civil Engineering fatigue crack growth fatigue cracking out-of-plane distortion cracking
Rivet Removal in a Built-up Girder Using an Air Chisel
10.4231/R7RJ4GC7
06/03/2015
This video shows the process of removing a rivet using an air hammer chisel.
Civil Engineering rivet removal riveting steel bridge retrofit
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