The following sections are about the tab widgets as you find them in 3D Mode, although most are also available as cards in the List Mode.
The item overview shows all entities in your project in separate groups. The groups are expandable/collapsible, which is advised to use for larger projects. Whenever the groups start overflowing their containers, scrollbars become visible.
All items have a right-click context menu, with options to edit the item (which opens the properties pane), delete the selected item(s), focus on the item in the 3D viewer, and some context-dependent options.
The following groups are available:
All items within a group can be rearranged by dragging and dropping with the mouse. For any changes in the list of sensors, excitation points, and Virtual Points, DIRAC will update the associated FRF data, measurement matrix, and other related components to reflect your changes. You are free to define a sensor sorting that is different than how the DAQ system will be configured. Also, you can rearrange all items after your measurements: the relation to previously mapped sensors will remain intact.
This widget shows detailed properties of a selected item. Although multiple selections are possible, the properties widget is mainly used to fine-tune individual sensors, impacts, and Virtual Points. The properties pane is automatically opened whenever you request an edit item action in, for instance, the 3D viewer or item overview.
Comments can be added to the project using the Comments tab. This is useful, for example, when the project will be handed off to a different test engineer and specific notes about the test preparation can be included (e.g. attach the sensors using wax).
Within the Measurement info tab, information about the project and measurement settings are defined. Since DIRAC version 2.1, this tab has been extended with fields that are often used in real engineering cases. The Project Title can use these fields to generate its content dynamically. Here’s how it works in practice.
Let us take the example of an Electric Power Steering (EPS) system. The component would be called an “EPS”, which is a short indicator. This can be filled in the Component row in the first column. The second column can be used for a longer descriptive name, which could be “Electric Power Steering”.
The component is part of a specific platform, internally often referenced using a short designator. This shortcode goes into the first column of Platform; the market name can be put in the second. The Stage row can be used if a particular year or edition is meant, or perhaps a development stage.
Crucial in component modeling is the so-called test assembly. Following the example of the EPS, relevant test assemblies could, for instance, be:
Here, we decided to define 3 test assemblies, which are combinations of the EPS component, the vehicle and/or a component test bench. For the vehicle, we further distinguish two variants, namely one with and one without cover plates. Following the procedure as before, we can now fill in the fields for the row Test Assembly and Variant.
Finally, the measurement campaign itself can be described using the fields Test Series and Version. Here you can, for instance, indicate whenever it is a partial measurement, specific additional impacts after a first full run, etcetera.
Now that all fields are set, you can make a dynamic project title using for instance the following string:
<Organization> <Platform> <TestAssembly><Variant>: <Component> <TestAssemblyName> – <TestSeries> (<Version>)
By right-clicking on the Project Title field, some built-in templates are available to use. This particular string evaluates to the following “parsed” project title:
VIBES Demo TA1p1: EPS Free-free – Full VP (V1)
This project title is shown as the title for your DIRAC file on the home screen and is used as default value for any exports. Moreover, the fields are exported as dataset parameters in the MATLAB MAT-file export, which is tremendously useful when used in conjunction with the VIBES Toolbox for MATLAB.
The last tab has the Virtual Point Transformation widget. This can be used to assess and optimize the placement of sensors and excitation points for the purpose of Virtual Point FRF measurement. See 4.6 Virtual Point Transformation for detailed instructions.
In List Mode, all widgets become docked cards. The Item Overview of the 3D Mode is not available here, but instead, a larger panel is shown with tabular overviews of all entities.
Item overview in List Mode
The following item categories are available:
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