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ATA Engineering Announces the Release of IMAT v8.1.0

Enhancements include the addition of MMIF to the MIFODS app, a new function for calculating fixed base modes, and the ability to import time-domain data from Data Physics.

SAN DIEGO, Calif., April 11, 2023 – ATA is excited to announce the release of version 8.1.0 of the IMAT family of software products. IMAT is a MATLAB toolbox designed for test and analysis engineers who process data from a variety of sources. This release brings a number of useful new enhancements to the powerful functionality available in IMAT.

ATA is committed to providing new IMAT releases in conjunction with new MATLAB releases. ATA Engineering designed IMAT v8.1.0 to work with MATLAB R2023a as well as previous releases back to R2020a. IMAT v8.1.0 also supports Abaqus 2022 and Femap 2022.2.

Notable IMAT Upgrades:

Find fixed base modes even with flexible boundaries

IMAT’s MTK has been enhanced with the new function SMURF (Structural Modification Using FRFs), which makes it easy to calculate fixed base modes from structures mounted on flexible boundaries. SMURF performs a partial inversion of the FRF matrix, moving your selected references to responses and vice versa, allowing you to calculate modes from FRFs with accelerations as references so you can make the most of your test data.

Access the power of IMAT for Data Physics hardware

If you use Data Physics hardware to acquire time histories, IMAT’s new read_dpmat function now allows you to read in MATLAB .mat files of time-domain data from Data Physics so you can apply IMAT’s sophisticated capabilities in your data processing.

Notable IMAT+Modal Upgrades:

Identify closely spaced modes with interpolated MMIF

MIFODS is an IMAT+Modal graphical user interface application for producing operating deflection shapes for peaks selected from mode indicator functions (MIFs). With this version, the multivariate MIF (MMIF) has been added to the available MIFs, along with a supplementary option to compute the MMIF from interpolated frequency response functions (FRFs) to better identify closely spaced modes, such as those shown below. Additionally, MIFODS now supports multiple-reference acceleration-denominator as well as mixed force- and acceleration-denominator FRFs (as utilized in ATA’s unique fixed base correction method), providing another option for your parameter estimation needs.

MMIF from interpolated FRFs.

Download IMAT v8.1.0

IMAT v8.1.0 is available to any IMAT user who is current with maintenance, enhance­ments, and support (ME&S). There is no cost for upgrading to v8.1.0. Customers can download the latest version here. Please note that this version, like other recent versions, requires Sentinel RMS 9.7.0 or higher.

To upgrade your IMAT to version 8.1.0 or to learn more about these new features, please send an email to [email protected].