Reliability HotWire

Reliability HotWire

Issue 135, May 2012

Tool Tips

*How do I use analysis workbook templates in Weibull++, ALTA and BlockSim?

With the analysis workbook feature in Weibull++, ALTA and BlockSim you can use built-in spreadsheets to display data, calculate reliability metrics, perform custom analyses and show the results. Each application includes several predefined templates you can use to create a workbook that’s been designed for a specific purpose.

The predefined templates in Version 8 of Weibull++, ALTA and BlockSim can be seen on the Standard tab of the Analysis Workbook Wizard after you select the Based on Existing Template check box.

In addition to workbooks based on predefined templates, you can save any workbook as a custom template. To save an open workbook as a template, choose Workbook > Worksheet > Save Workbook as Template.

The custom templates that you have saved can be accessed on the User tab of the Analysis Workbook Wizard after you select the Based on Existing Template check box. If the template you need is displayed in the list, select it and click OK. If not, click the Open icon to browse for the desired template and add it to the list.

 

*How can I configure my Xfmea/RCM++ projects to display prevention and detection controls in separate columns of the analysis worksheet?

In failure modes and effects analysis (FMEA), a control is a method or action that is planned or currently in place to reduce or eliminate the risk associated with a particular failure cause. In most cases, controls are classified as "Prevention" or "Detection," where:

  • Prevention controls are intended to reduce the likelihood that the failure will occur.
  • Detection controls are intended to increase the likelihood that the failure will be detected before it reaches the end user.

Which control properties are available in Xfmea/RCM++ analyses depend on the interface style the project uses. In Version 8, you can choose Project > Management > Configurable Settings > Interface Style to open the interface style window and then select the FMEA > Controls page from the navigation panel. Use the Number of Controls Columns in Worksheet View area to set how many control columns to display in the FMEA worksheet view.

Select One Column if you want to put all of your controls in one column, such as when using a reporting format that is based on the 2002 revision of the SAE J1739 guidelines. The software will display the control type in a separate column. For example:

Select Two Columns if you want to display two types of controls in the FMEA worksheet view, such as when using a reporting format that is based on the 2008 revision of SAE J1739 or the AIAG FMEA-4 guidelines. For example:

Note: Since the control types are configurable, the software needs a way to determine which controls go in each column. It does so by checking to see if the control type for the record contains the text specified in the ‘Prevention’ column displays records with control type(s) containing field. For example, if you are using the default control types ("Prevention" and "Detection"), the software will put all of the records with the "Prevention" type into the first column (because "Prevention" contains "Prev"). Any controls assigned to the "Detection" type, or not assigned to a control type, will be placed in the second column. If you change the default names of the control types, you may need to change the text criteria that the software checks for. For example, if the project will be configured to use German interface labels, you might change the control types to "Prävention" and "Entdeckung," and then you would need to change the criteria from "Prev" to "Präv."