Session 3.1: FMEA

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Session 3.1: FMEA

SESSION 3.1 OUTLINE

3.1.1: Failure Mode & Effects Analysis Definition 3.1.2: FMEA Analysis in MADE 3.1.3: Generating a FMEA Report 3.1.4: Override Failure Diagrams � Functional Failure Settings

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Session 3.1: FMEA

DISCUSSION 3.1.1 FAILURE MODES & EFFECTS ANALYSIS DEFINITION

MIL-STD-1629A Analyse each failure mode Determine their effects on the system Classify failure modes according to severity

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Session 3.1: FMEA

DISCUSSION 3.1.1 FAILURE MODE DEFINITION

MIL-STD-1629A Failure Mode = MADE Failure Mode (Functional Failures only)

How are physical failures captured in a MADE FMEA?

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Session 3.1: FMEA

DISCUSSION 3.1.1 FAILURE MODE DEFINITION (CONTINUED)

A Failure Mode in a MADE model can have multiple Failure Paths (Physical Failures)

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Session 3.1: FMEA

DISCUSSION 3.1.2 FMEA ANALYSIS IN MADE

MADE generates a FMEA report based on the MADE system model created Each row represents one failure path and failure mode (including local, next & end effects) Severity Classification of each row is calculated from the Failure Mode Severity of the End effect Item

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Session 3.1: FMEA

EXERCISE 3.1.2 SETTING AN END EFFECT IN THE SYSTEM MODEL

Method 1:

Right-click the Fuel Tank' item in the Project Explorer Select End Effect Item from the menu Result: End effect is now the Fuel Tank' item (upward-pointing arrow )

Method 2:

Right-click the Power Generation' system on the System canvas Select End Effect Item from the menu Result: End effect will be set to the Power Generation' System

Set the `Vehicle System' to the End Effect using either method

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Session 3.1: FMEA

EXERCISE 3.1.2 EDIT THE END EFFECT ITEM SEVERITY

To change the Severity factor:

Locate the `Power Generation' subsystem in the Project Explorer Expand the System Tree until Mechanical � rotational Torque is visible then select this item From the Properties viewer select the Criticality tab

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Session 3.1: FMEA

EXERCISE 3.1.2 EDIT THE END EFFECT ITEM SEVERITY (CONTINUED)

Verify that the Failure Mode response (top tab) is set to: Low Change the Severity value to: 6.0 Change the Failure Mode response (top tab) to: High Change the Severity value to: 9.0

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Session 3.1: FMEA

DISCUSSION 3.1.3 FMEA (MIL-STD-1629A) REPORT

There are 2 different FMEA reports available in MADE:

Component/Subsystem FMEA

   Component/Subsystem FMEA report is generated from any source and any selected end effect
   This report is a condensed report that can be used to report only on select component / subsystem

System FMEA

   The system FMEA report is generated on all components for the entirety of the system
   This report is a full report which captures all component and subsystem effects on the end effect

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Session 3.1: FMEA

EXERCISE 3.1.3 GENERATE A FMEA (MIL-STD-1629A) REPORT

To generate a FMEA (MIL-STD-1629A) Report:

Select Reports Report Wizard from the main menu

Under Failure Mode Effects Analysis select FMEA (MIL-STD-1629A)

Select to proceed to next page

Set the Level of Analysis to System

Ensure Propagation Method is set to FCM

Select to generate the report

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Session 3.1: FMEA

EXERCISE 3.1.3 GENERATE A FMEA (MIL-STD-1629A) REPORT (CONTINUED)

Select Reports Report Wizard from the main menu

Under Failure Mode Effects Analysis select FMEA (MIL-STD-1629A)

Select to proceed to next page

Set the Level of Analysis to Component/Subsystem

Select the `Vehicle System' item from the System Model list and select to set as end effect

Select the Air Filter' component from the Diesel Engine' Subsystem and select

   This will report on the `Air Filter' component

Select to generate the report

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Session 3.1: FMEA

EXERCISE 3.1.3 GENERATE A FMEA (MIL-STD-1629A) REPORT

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Session 3.1: FMEA

EXERCISE 3.1.3 FMEA SEVERITY CLASSIFICATION

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Session 3.1: FMEA

DISCUSSION 3.1.4 OVERRIDE FAILURE DIAGRAMS � FUNCTIONAL FAILURE SETTINGS

Override failure diagram option is available for items with Failure Diagrams

Override is selected: FMEA/FMECA does not report Failure Paths, only Failure Mode responses Override is not selected: FMEA/FMECA reports Failure Paths AND Failure Mode responses (additional rows)

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Session 3.1: FMEA

SESSION 3.1 SUMMARY

3.1.1: Failure Mode & Effects Definition 3.1.2: FMEA Analysis in MADE 3.1.3: Generating a FMEA Report 3.1.4: Override a Failure Diagram