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Case Study 2.7 Load-Haul-Dump (LHD) Hydraulic System Reliability

Case Study 2.7 Load-Haul-Dump (LHD) Hydraulic System Reliability. SMRE – Instructor: Prof. Ernesto Author: Ryan Whittemore Date: August, 11 2008. LHD1. LHD3. LHD9. LHD11. LHD17. LHD20. Overview. Load-Haul-Dump Machines Hydraulic Failure Time between Failure Machine Distribution

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Case Study 2.7 Load-Haul-Dump (LHD) Hydraulic System Reliability

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  1. Case Study 2.7 Load-Haul-Dump (LHD) Hydraulic System Reliability SMRE – Instructor: Prof. Ernesto Author: Ryan Whittemore Date: August, 11 2008

  2. LHD1 LHD3 LHD9 LHD11 LHD17 LHD20 Overview • Load-Haul-Dump Machines • Hydraulic Failure • Time between Failure • Machine Distribution • System Equation • MTTF & MRL

  3. Methodologies Rs := 1-(1-R1)*(1-R3)*(1-R9)*(1-R11)*(1-R17)*(1-R20) Rs, Reliability of the System R1, Reliability of LHD1 R3, Reliability of LHD3 R9, Reliability of LHD9 R11, Reliability of LHD11 R17, Reliability of LHD17 R20, Reliability of LHD20

  4. Results • Reliability Curves for each machine • LHD1, LHD3, LHD9, LHD11, LHD17, LHD20 • System Reliability Curve • System Failure Curve

  5. Conclusion • The MTTF for the system is 380.82 hours. • Parallel System • Extend Reliability • Allow for Maintenance • Machine Distribution • Lognormal • Weibull MRL of System

  6. Questions

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