|1. Mechanical damage due
to rope movement over sharp edge projection while under load.
|2. Localized wear due to
abrasion on supporting structure. Vibration of rope between drum
and job head sheave.
|3. Narrow path of wear resulting
in fatigue fractures, caused by working in a grossly oversize
groove or over small support rollers.
|4. Two parallel paths of
broken wires indicative of bending through an undersize groove in the sheave.
|5. Severe wear, associated
with high tread pressure. Protusion of fibre main core.
|6. Severe wear in Lang Lay,
caused by abrasion of cross-over points on multi-layer coiling
|7. Corrosion of severe degree
caused by immersion of rope in chemically treated water.
|8. Typical wire fractures
as a result of bend fatigue.
|9. Wire fractures at the
strand, or core interface, as direct from ‘crown’ fractures,
caused by failure of core support.
|10. Break of IWRC resulting
from high stress application. Note nicking of wires in outer
|11. Strand core protusion
as a result of torsional unbalance created by ‘drop ball’ application
(i.e. shock loading).
|12. Typical example of localized
wear and deformation created at a previously kinked portion of
|13. Multi-strand rope ‘bird-caged’
due to torsional unbalance. Typical of build-up seen at anchorage
end of multi-fall crane application.
|14. Protusion of IWRC resuting
from shock loading.