CRANE TYPE
Quay Container Crane
Quay Container Crane
DAMAGE
Boom Plastic Deformation
Boom Plastic Deformation
ASSESSMENT
Damage Cause Investigation
Damage Cause Investigation
METHODS
Strain Gauge Measurements & Structural Analysis
Strain Gauge Measurements & Structural Analysis
PROJECT OVERVIEW
The Challenges
Plastic deformations were detected in the boom structure while the crane was still under warranty. The manufacturer stated that the damage was caused by the maintenance staff. Strain gauge measurements and structural analysis were performed to determine the actual cause of the deformation. The investigation showed that the problem was caused by unequal distribution of the boom forestay forces
FIELD INSTRUMENTATION
Strain Gauge Measurements
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Strain gauge measurement on the crane structure.
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Quay crane investigated for boom plastic deformation.
STRUCTURAL ANALYSIS
Boom Forestay Force Analysis
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Structural analysis was performed to investigate the cause of the boom plastic deformation.
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The analysis showed that the problem was caused by unequal distribution of the boom forestay forces.
PROJECT OUTCOME
Engineering Basis for the Cause of Damage
Using strain gauge measurements and structural analysis, it was demonstrated that the boom plastic deformation was caused by unequal distribution of the boom forestay forces. The assessment provided an engineering basis for identifying the actual cause of the damage and for further technical and warranty discussions