Test and Analysis

Quite often, it wouldn't be prudent to design something and put it into production without having first performed some sort of analysis to ensure the design will perform as expected under worst-case scenarios

This is particularly important in the space industry where a failure of one component could result in the loss of a very expensive spacecraft that hundreds of people have spent years to bring to fruition.

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Stress Analysis

The main objective of performing a stress analysis is to determine whether a component will permanently deform under loading.

I have performed stress analysis using SolidWorks Simulation and Seimens FEMAP, which is a front-end for NASTRAN.

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Modal Analysis

For any assembly that is subjected to vibration, it could be argued that Modal analysis is the most important analysis performed.

Excite any component at its natural frequency, and you set up a resonance. If two components are located next to each other that have very similar natural frequencies, and then subject them to high levels of random vibration, and you could experience a failure.

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Vibration testing

A very important test regime performed on components and assemblies going into space, as the acoustic vibrations witnessed during a rocket launch can be very damaging.

Performed following a modal analysis, it takes a lot of knowledge to perform the test correctly, and also to analyse the results correctly. For spacecraft, failure is not an option!

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Shock testing

The shock testing I have managed has taken place on a ringing plate, designed by us, built by us, and tested by us.

When the nosecone on a rocket is separated using pyrotechnic charges, a shock wave reaching 1,000g at 1,000Hz could propagate through the spacecraft. This sort of shock can be very damaging to small components, such as on a curcuit board.