Weight is a critical aspect of any instrument that is installed in a satellite/space application. 3D laser Doppler vibrometry (LDV) is ideal for measuring the structural dynamic properties of lightweight materials. Thin films used in detectors, optics and deployed arrays can only be tested using LDV. Satellite manufacturers need to know that their product will survive the launch into orbit where repair is not an option.
Fixed, Large or Confidential Object?
ASDEC can bring its portable system to test sites across Europe and measurements can be made from a distance and through glass to be able to work on objects in clean room environments.
Reduction in weight is especially relevant within the space industry. As materials and design advance, weight reduction can affect stiffness and strength. Traditional testing can be unsuitable for these lightweight designs. For example, the MIXS front sensor plate shown here needed to be tested and correlated against computer modelling but had a non-contact surface. 3D laser Doppler vibrometry allowed a very precise and high resolution frequency modal to be obtained for the prototype piece before final design.
ASDEC can support the testing of all aspects of instrument or satellite design to ensure it is right first time.
In addition our advanced FEA correlation tools allow ASDEC to support our customers in front loading their development cycle in the virtual domain reducing the requirements of costly physical test items.
Helium Filled Mylar Balloon
As a demonstration ASDEC has used a helium filled Mylar balloon to show we are able to test lightweight material. It was held free-free using fine elastic thread and excited on the rear face of the balloon using a micro piezo exciter. The images show a measurement taken from the front face of the balloon with 3500 points showing the effect that the creases in the fabric of the surface have in the modal response.