Technology Innovation Leaders Class
Precise safety diagnosis and residual life evaluation
Over 50 years of service life for EMU with the latest technology through residual service life evaluation and life extension.
Material technology together with the manufacture and control technologies are up to date. Also, the infrastructure is optimized. It is a waste of resource and tax to scrap the EMU which has been manufactured under such conditions after running for under 50 years.
- Select vehicle
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- Design
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Carbody 3D
Modeling -
Bogie 3D
modeling
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- Analyze
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Carbody structure
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Carbody structure
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Bogie frame
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Bogie frame
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- Evaluate status
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Dimensional inspection
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Visual inspection
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- Evaluate safety
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Defect inspection
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Corrosion inspection
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Electrical characteristic
inspection -
Electrical characteristic
inspection
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- Attach S/G load weight
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Attach strain gauge
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Load weight
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- Measure stress
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Measure mean stress and dynamic stress
- Evaluate performance
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Powering test
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Braking test
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Ride comfort test
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Vibration test
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- Assess residual service life and write report
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The life extension project requires top technology, abundant experience and a responsible attitude to the end.
- Propose solution for extending residual service life
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Directly weld the
fracture area -
Reinforced welding on
weak area bracket -
Reinforced welding on
area with problem -
Reinforced welding on
area with problem -
Additional reinforced
welding on cross beam -
Additional reinforced
welding on side sill
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Assessing the remaining life and prolonging the life of the project should precede the establishment of standards and procedures.
- Establish precise safety diagnosis system
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- Write detail plan for precise safety diagnosis
- Select vehicle subject to precise safety diagnosis
- Design(3D), Modeling and analyze
- Evaluate status(Appearance, Dimension), Evaluate safety(Defect, Abrasion, Corrosion, Electric characteristic inspection)
- Attach strain gauge and load weight
- Measure average stress, measure dynamic stress and evaluate performance(powering, braking, vibration and ride comfort test)
- Evaluate residual service life and write precise safety diagnosis report
- Propose plan for extending residual service life
- Establish precise safety diagnosis
evaluation system and submit comprehensive report