Road load vibration test rig at
Vibration testing is essential during design and product development of motor vehicles to ensure the reliability and structural integrity not only of the vehicle but also its components. Road load data provide a realistic, 'real world' control stimulus for a vibration test facility.
Calsonic Kansei is a Tier 1 global automotive component manufacturer. The European test facility, based in Llanelli, Wales, was recently asked to carry out vibration tests using road load data on an automotive cooling pack assembly. The facility is equipped with four electrodynamic shakers, each controlled by m+p VibControl software and m+p VibPilot front-ends.
Using m+p's road load software, engineers at Calsonic Kansei were able to create a 15-minute profile from the data supplied by their customer. The full test consisted of 700 repetitions of the profile, using a single control point at the top of the cooling pack assembly. m+p VibControl software provides unlimited time data replication with real-time, closed-loop control.
To learn more about m+p international's solution for vibration testing using road load data, please read the article "Vibration case study" in the November 2014 issue of the "Automotive Testing International" magazine.
Ground vibration testing
In Ground Vibration Testing of aerospace structures sine excitation is very popular due to its good signal to noise ratio. The main drawback of this technique is the high coherence between different excitation channels if more than one shaker is used. In this case it is not possible to calculate the frequency response functions (FRFs) directly.
m+p international have now solved this limitation by using data
Curiosity's high-gain antenna
NASA runs a number of spectacular current missions. Its Curiosity rover, for example, studies climate and geology on Mars and investigates its habitability. The high-gain antenna located on the rover equipment deck is used to receive commands for the mission team back on Earth.
Airbus Defence and Space (formerly: EADS CASA) in Madrid/Spain was responsible for design, analysis and full qualification and acceptance testing of Curiosity's high-gain communication antenna. They performed comprehensive vibration tests using a 96-channel m+p VibControl system and a 90 kN shaker. Vibration controllers by m+p international are renowned for their high quality, performance and reliability – hence, characteristics that are crucial for successful testing in aerospace applications.
Well, that brings to a close this edition of the m+p international Newsletter. If there are items of information you would like to see here or if you have useful tips for the rest of the environmental test world, then please send us your pointers and we'll include them in the next edition.
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