LMS Test.Lab MIL-STD Testing provides a complete solution for military standards (MIL-STD, GAM-EG.13) qualification testing on structures, using a shaker installation in a closed loop fashion. The solution supports swept sine, random, shock, SRS, combined modes and time replay-based qualification. In every qualification test phase and control mode, the system offers a wealth of safety precautions to protect the test article and test area.
Test result documentation is key. A fully automatic logging mechanism makes reporting easy and complete. Automatic setup and test data archiving, transducer annotation on stored spectra, visually appealing formatting of run event log files and digital picture support are some examples. All information is available in a very intuitive browser tree so that a first draft can be drawn up by anyone. The LMS Test.Lab Random, Sine, Shock and Single Axis Waveform Replication Control applications support safe, accurate and productive component qualification testing. All applications have been designed with long duration, multiple-operator shift testing in mind.
The modularly organized solution helps users mix and match sweeping and fixed sine tones and narrowband in all possible ways so they can set up the most demanding combined modes tests imaginable.
For SRS testing, LMS Test.Lab Shock Response Synthesis supports damped sine or wavelet use to create a target time history that complies with the target SRS. A fully automated process provides a default waveform. If the waveform violates shaker limits, individual parameters can be modified in a fully interactive optimization process. A multi-level undo/re-do buffer helps users evaluate different parameter changes, while viewing the resulting waveform, refreshed with every alteration. Each updated waveform is checked against shaker performance limits. This means that tests with higher SRS levels can be run on the existing installation.
For precise replication of operational loads, LMS Test.Lab Single Axis Waveform Replication provides measured signal replay directly on the shaker. It extends current testing techniques from classical sine, tracked sine, random and shock control to long-duration time waveform replication.
To support the test tailoring approach as described in LMS Test.Lab MIL-STD, LMS Test.Lab Mission Synthesis defines test specifications for single axis random and swept sine vibration testing from measured load data. Resulting test specifications are equal in damage and are accelerated because of faster run times. Multiple acceleration loading environments are analyzed for fatigue potential by calculating MRS (maximum response spectrum) and FDS (fatigue damage spectrum).
