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Reliability Engineering

Course Day 1

Introductions

  • Reliability history and objectives.
  • Basic principles.
  • The nature of engineering design versus reliability analysis.
  • Group activity.

Reliability Mathematics

  •  Reliability distributions, including exponential and binomial distributions.
  • Probability and the Bayes Theorem.
  • Reliability equations.
  •  Reliability block diagrams.
  •  Excel applications.
  •  Group activity.

Failure Rate, MTBF, and Other Reliability Metrics

  • Failure rate sources.
  • MIL-HDBK-217F.
  • NPRD-2011.
  • Supplier data.
  • MTBF, MTBUR, URR, and other calculations.
  • Excel applications.
  • Group activity.

Hardware, Firmware, and Software Reliability

  • Hardware, firmware, and software definitions.
  • The nature of firmware and software “failures.”
  • Software test approaches and objectives.
  • Improving software reliability.
  • Group activity.

Reliability Testing and Growth

  • MIL-STD-785.
  • Reliability demonstration testing.
  • Test, analysis, and fix (TAAF) approaches.
  • Reliability growth models.
  • The Duane growth model.
  • Excel applications.
  • Group activity.

 

Course Day 2

 Failure Modes and Effects Analysis

  • FMEA history, applications, and objectives
  • MIL-STD-1629, SAE J1739, and other FMEA standards.
  • Design and Process FMEA.
  • Risk Priority Number calculations.
  • Corrective and preventive actions.
  • Using Excel to streamline the FMEA process.
  • Failure mode effects summaries (FMES).
  • Excel applications.
  • Group activity.

Design of Experiments

  • Hypothesis testing.
  • z-tests, t-tests, f-tests, and others.
  • ANOVA considerations.
  • Taguchi and fractional factorial experimental approaches.
  • Excel applications.
  • Group activity.

Process Capability

  • Process capability definitions.
  • The normal curve.
  • Design and process tolerances versus process capability.
  • Cp and Cpk.
  • Sampling plans.
  • Operating characteristic curves.
  • Statistical process control.
  • Using Excel for Cp and Cpk calculations.
  • Predicting rejection probabilities based on process capability.
  • Group activity.

 

Course Day 3

 Root Cause Failure Analysis

  • The four-step problem solving process.
  • Ishikawa diagrams, mind mapping, 5-Whys, and flow charting.
  • Fault tree analysis.
  • Managing the failure analysis.
  • FMA&A matrices.
  • Corrective and preventive action.
  • Group activity.

Reliability of Single-Shot Devices

  • Munitions, ammunition, airbags, and other energetic material devices.
  • Bruceton testing.
  • The Butterfield model.
  • Space ordnance considerations.
  • Excel applications.
  • Group activity.

Product and Process Reliability

  • Applying reliability engineering concepts to process analysis.
  • Typical process reliability challenges.
  • Poka-Yoke techniques and applications for preventing design and process mistakes.
  • Excel applications.
  • Group activity.

Warranty Considerations

  • The nature of product warranties.
  • Defining warranty requirements.
  • Predicting long term reliability from a warranty perspective.
  • Identifying and correcting reliability degradation drivers.
  • Warranty financial considerations.
  • Developing a warranty testing approach.
  • Warranty remedy considerations.
  • Excel applications.
  • Group activity.

System Safety Considerations

  • System safety history.
  • MIL-STD-882.
  • Preliminary hazard analyses.
  • Operating hazard analyses.
  • Subsystem hazard analysis.
  • Fault tree analysis.
  • Excel applications.
  • Group activity.

Course Review and Critique

  • Course review.
  • Developing a go-forward plan.
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