Titanic
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Rivets Implicated in 'Titanic' Disaster.
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Timothy Foecke of the U.S. National Institute of
Standards and
Technology February 10 reported that brittle rivets
in the hull of the
Titanic ocean liner might have contributed to the
ship's sinking after
colliding with an iceberg off the coast of
Newfoundland, Canada, in
1912. Foecke said that a microscopic analysis of
wrought-iron rivets
recovered from the British ship's wreckage found that
they contained an
unusually high amount of slag. Excessive slag, a
byproduct of the
smelting process, could weaken wrought iron.
Paul K. Matthias of Polaris Imaging Inc. in 1996 had
used sonar to find
six openings in the Titanic's hull that appeared to
be located on the
boundaries between metal plates fastened together by
rivets. The
discovery drew researchers' attention to the rivets
as a potential
source of weakness in the hull.