Failure Portrait: Beauty of a Sort

by Don Friedman on April 14, 2016

Steel deterioration, including rust-jacking and delamination, has dominated these failure portraits so far, and the trend continues today.

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That is amazing. The beam was fully exposed, so the delimitation was able to take place with nothing holding the sheets of rust in place. (And of course, no rust-jacking, since the rust had nothing to push against.)

We assume that rust occupies a volume some 6 to 8 times thicker (in the direction that the delamination is moving) than unsuited steel. In this case, it may be even bigger as the rusts sheets fanned out.

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