Failure Modes

The failure mode determines the consequence of the failure for the business objective. If failure modes have been specified, they can be selected at failure causes. These options allow for selecting a different failure mode for each failure cause, as a result of which each failure cause has a different consequence for a system's business objectives. Failure modes can be added at part level. Parts can be allocated several failure modes.

There are four ways to manage Failure Modes:

• Edit Failure Mode in a FM-Library

• Edit Failure Mode (FMECA) using the FMECA Grid

• Edit Failure Mode (FMECA) using the Property Grid

• Edit Failure Mode (FMECA) using the Properties screen

Failure modes within the FM Library

To add a failure mode to a part in the FM Library, you can right-click the relevant part. This opens a context menu, in which you should select 'Failure Modes'. This opens the following window. You can use the New button to create new failure modes. Undesired failure modes can be removed using the Delete button.

Adding failure modes in the FM Library

Failure Mode (FMECA) in the FMECA Grid

Adding a failure mode to a FMECA System in the FMECA Systems screen, can be done using the FMECA Grid. Right-click on an element in the FMECA-tree and choose FMECA Grid in the context menu. This will open the FMECA Grid for the selected object.

If there are already failure modes defined for this object, they will be displayed and can be edited here.

Editing a failure mode can be done as follows:

1. Open a model in the FMECA tree ad open the FlexGrid (right-click an object in the model and choose FMECA Grid).

2. Choosing an existing failure mode: see step 2 of Failure Mode (FMECA) in the Property Grid below.

3. Defining a new failure mode: in the FMECA Grid, [1] first select the Part for which you wish to define a new failure mode: [2] click the   button and [3] type a new value under column Failure Mode; [4] optionally add a linked business objective ; [5] click Apply to save the value;
   
   
   

4. Changing the name of a failure mode: in the FMECA Grid, [1] click somewhere in the column Failmode in the field you wish to change; you may now change the text; [2] Click the OK or Apply button to save the changes.
   
   

Failure Mode (FMECA) in the Property Grid

You may also manage (FMECA) failure modes with the Property Grid. Follow these steps:

5. Open a model in the FMECA tree and select a failure cause

6. Choosing an existing Failure Mode: In the Property Grid, choose an existing value in the field Failure Mode in the section Failure Mode
   
   

7. Defining a new Failure Mode: in the Property Grid, click the button Edit . In the popup screen that appears click the button Add. Then type the name of the new Failure Mode; click the OK button to save the value. Press Assign to immediately use the new value.
   
   
   
   
    

8. Changing the name of a failure mode: in the Property Grid, for a chosen Failure Mode, click in the button Edit in the section Failure Mode. You may now select a value and change the value of the field using the button Edit. Click the OK button to save the new value.
   
   

Important: When you change a failure mode description in the Property Grid, as shown above, then you will change the description for all occurrences of this failure mode for this Model.
The change will effect a value in a list, that may be used in different places!

Failure Mode (FMECA) in the Property Screen

You may also choose or create Failure Modes in the Property Screen. Follow these steps:

9. Open a model in the FMECA tree and select a Failure Cause by double clicking it

10. Choosing an existing Failure Mode: In the pull-down list of the field Failure Mode, select one of the values, and click OK to save your change.
    
    
    

11. Creating a new failure mode: in the Properties Screen, choose the value << New >> from the pull-down menu in field Failure Mode; now type a new value in the now empty field Failure Mode; click OK to save; The list has now been expanded with the newly added value, which can be selected immediately.
    
    
    

12. Changing the description of a failure mode: in the Properties Screen, it is not possible to change the description of a Failure Mode. Use the Property Grid instead, or apply the steps provided in Failure Mode (FMECA) in the FMECA Grid.