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The main sections of the museum are listed below;
Metal Fatigue
Manufacturing Faults
Bicycle Components
Corrosion
Polymers
Composite Materials
Tools of the trade, some ways to investigate problems;
Photoelasticity
Dye penetrant testing
Glossary
of materials engineering terms
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Bicycle Components - Cycle rim problems
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This polished aluminium rim was left
over Christmas with road salt and mud on the rim. Galvanic corrosion
has started between the chromium plated brass spoke nipple and the
aluminium rim.
See
larger image |
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This extruded section cycle
rim contains an extrusion defect that created a plane of weakness.
When the wheel was being rebuilt with new spokes the increased tension
ruptured the rim.
See
larger image |
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This galvanic corrosion can be even worse
underneath the tyre in cycles used all winter. Here the corrosion
is so advanced it has penetrated the rim thickness.
See
larger image |
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