Are My Hammer Impact Results Valid? (3) Time Invariance
As mentioned in our previous two articles, when performing experimental modal testing of a structure or component using impact (or ping) testing, it is important to consider and verify the…
Are My Hammer Impact Results Valid? (2) Reciprocity
As mentioned in our previous article, when performing experimental modal testing of a structure or component using impact (or ping) testing, it is important to consider and verify the validity…
Are My Hammer Impact Results Valid? (1) Linearity
When performing experimental modal testing of a structure or component using impact (or ping) testing, it is important to consider and verify the validity of any results. A modal analysis…
Hammer Testing: Free or fixed support?
A vital question to be asked before performing hammer testing is - how do I support the testing object? What fixing mechanism to use? Or technically, what are the desired…
[Video] Storing FRFs, coherence & time series
James Wren (Prosig UK) explains how to store FRFs, coherence and/or time series data in modal hammer testing using Prosig's P8000 & DATS software. http://www.youtube.com/watch?v=JLumlmoRCvM
[Video] What are nodes, components & structures in modal testing
James Wren (Prosig UK) explains how nodes, components & structures are used in modal hammer testing using Prosig's P8000 & DATS software. http://www.youtube.com/watch?v=FmNCqv7p3pc
Prosig to exhibit at Tenth International Conference on Recent Advances in Structural Dynamics (RASD)
Prosig are delighted to have been invited to attend the 10th International Conference on Recent Advances in Structural Dynamics (RASD) to be held at The Institute of Sound and Vibration Research (ISVR) at Southampton University on 12th – 14th July 2010.
Prosig engineers will be on hand to demonstrate the P8000 range of 24-bit data acquisition systems and the DATS software including some of the specialist add-ons including Modal Analysis, Structural Animation and Hammer Impact Testing.
Prosig have a long relationship with the ISVR with many staff, both past and present, having worked or studied there and so Prosig are very pleased to have been invited to exhibit at the conference.
Measuring For Success With A Hammer Impact Test
The following application note shows the steps taken to perform structural analysis using a hammer impact test on an automotive exhaust pipe structure to improve the structural damping properties of the exhaust pipe mount. This application note follows up to a previous article – “Preventing Component Failure In The Fast Lane”.
A recent signal processing application note described how the Prosig sponsored Dalmeny Racing Formula Ford Team, whilst contesting the UK Formula Ford 1600cc championship, suffered several minor structural failures on a particular part of an exhaust pipe mount. Prosig dispatched a team of engineers, and after a brief survey of the damage, the engineers made an outline assessment. They concluded that “the exhaust itself is resonating at particular engine speeds. This is causing some shear forces in the mount. This in turn is causing stresses in the material leading to cracking and eventually failure.”
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