What is the difference between Transfer Path Analysis (TPA) and Source Contribution Analysis (SCA)?

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Transfer Path Analysis (TPA) provides the route of the noise or vibration through the structure, not just which sources cause the response, but the route taken. This is useful for developing and improving components like engine anti-vibration mountings or suspension anti-vibration mountings.

Engineers can see which anti vibration mounts need to be improved as they can visualise which anti-vibration mountings are passing the highest level of vibration from source to response.

Source Contribution Analysis (SCA) provides the results of which sources may be causing the vibration or sound at the response position. It does not reveal which paths the vibration or sound may be travelling from sources to the response.

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James Wren

Former Sales & Marketing Manager at Prosig
James Wren was Sales & Marketing Manager for Prosig Ltd until 2019. James graduated from Portsmouth University in 2001, with a Masters degree in Electronic Engineering. He is a Chartered Engineer and a registered Eur Ing. He has been involved with motorsport from a very early age with a special interest in data acquisition. James is a founder member of the Dalmeny Racing team.

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