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Project Options Tab

Figure 3 - . Project File Properties, Product Options Tab

The Project Options tab provides you with the ability to enable and disable specific features or modules of Relex. A check mark beside the associated module signifies that the module is selected for the current Project file. No check mark signifies that the associated module is disabled for the current Project file.

Prediction/General Files Tab

Figure 3 - . Project File Properties, Prediction/General Files Tab

The Prediction/General Files tab provides you with the ability to activate customized files to be used with a Project file. These special files are associated with the general and prediction data in a Project file. The <Browse> button to the right of each field can be used to select the file to be activated for the Project file. The options are:

File Description

Defaults Selects the User-Defined Defaults file to be used for the System. Relex has its own Defaults file that is always active. The information in the user Defaults file overrides the Relex defaults if you leave part parameters blank during data entry.

User Defined Values User Defined Values file provides you with the ability to create user defined quality levels and environments.

Mission Profile A Mission Profile provides you with the ability to segment the calculations into separate mission phases. Each mission phase can have a different environment and temperature associated with it.

Derating The Derating file allows you to specify your own derating criteria for the various stress parameters. During calculations Relex checks to see which parts are over your derating requirements. Relex has a built-in set of derating parameters that are always checked.

Derating Calculations If a Derating file is selected, you can also choose between nominal or worst case analysis. If nominal is selected, the nominal values in the Derating file are used for derating purposes. If worst case is selected, the worst case values in the Derating file are used for derating purposes.

FMEA Files Tab

Figure 3 - . Project File Properties, FMEA Files Tab

The FMEA Files tab provides you with the ability to activate customized files to be used with a Project file. These special files are associated with the FMEA data in a Project file. The <Browse> button to the right of each field can be used to select the file to be activated for the Project file. The files available for selection are:

File Description

Modes The Modes file contains failure modes and the percentage of time that each mode of failure will occur for various part types. The Modes file may also contain corresponding causes for each failure mode.

FIN Definition The FIN Definition file allows you to define various Fault Identification Numbers (FINS) and associated data for use in a FMEA. FINS allow you to group failure modes into fault equivalence groups.

Phrases The Phrases file contains common phrases that are used throughout a Relex FMEA. The Phrases file makes it possible to select common phrases from a choice list while performing data entry rather than having to type the data manually.

Automatically add new phrases to Phrases file

When enabled, Relex automatically adds all new text entries into the Phrases file. If disabled, Relex tracks all text entries, and if a text entry is not found in the active Phrases file, Relex asks if you wish to add the new text to the Phrases file.

Maintainability Files Tab

Figure 3 - . Project File Properties, Maintainability Files Tab

The Maintainability Files tab provides you with the ability to activate customized files to be used with a Project file. These special files are associated with the maintainability data in a Project file. The

<Browse> button to the right of each field can be used to select the file to be activated for the Project file. The files available for selection are:

File Description

Tasks Tasks files are used to store the basic and supertasks and associated times.

The repair times stored in the Tasks file are used as the basis for all of the maintainability calculations.

FD&I Outputs FD&I Outputs files are used to store Fault Detection and Isolation (FD&I) Outputs that are to be used with a Project file. Each FD&I Output definition also includes the list of associated tasks.

Maintainability

Groups Maintainability Group files are used to store maintainability groups that are used with a Project file. Maintainability groups are only used when

maintainability calculations are to be based on MIL-HDBK-472 Procedure 5A. MIL-HDBK-472 Procedure 5B calculations do not use Maintainability Groups.

Fault Tree Files Tab

Figure 3 - . Project File Properties, Fault Tree Files Tab

The Fault Tree Files tab provides you with the ability to activate customized files to be used with a Project file. These special files are associated with the Fault Tree portion of a Project file. The

<Browse> button to the right of each field can be used to select the file to be activated for the Project file. The files available for selection are:

File Description

CCF Groups Common Cause Failure Groups files allow you to include fault tree events in multiple common cause failure groups.

Event Parameters Event Parameters files are a storage area for commonly used events and associated event parameters for constant probability, failure rate/MTBF, frequency, failure with repair or failure with periodic inspection.

Format Files Tab

Figure 3 - . Project File Properties, Format Files Tab

The Format Files tab provides the ability to activate customized files to be used with a Project file.

These special files are associated with the format of both input windows and output reports. The

<Browse> button to the right of each field can be used to select the file to be activated for the Project file. The files available for selection are: