High Definition Modal Testing

High Definition Modal Testing Is it all it’s Tapped Up to be? The Challenge Impact testing is one of the oldest and most versatile methods of experimental modal testing around.  It’s quick to setup, needs only basic instrumentation and can be done by one person.   So when challenged with even the most complicated structure the Read more about High Definition Modal Testing[…]

Ding Dong Measurement on High

It’s beginning to SOUND a lot like… Bells are amongst some of the earliest known musical instruments, using mechanical resonance to produce a powerful harmonious sound. The art of bell founding has been present in Europe since the 4th or 5th century. In 17th century Britain, the rise of ‘change ringing’, where mathematical patterns are Read more about Ding Dong Measurement on High[…]

When life gives you toast, make cheese on toast

CHEESE ON TOAST!! Typically the automotive industry makes extensive use of viscoelastic damping materials to address structure-borne vibration and radiated noise from body panels. Such damping materials are bonded to the base metal. To fully characterise the performance of such composite systems one would traditionally measure the bending properties of a carrier sample plate and Read more about When life gives you toast, make cheese on toast[…]

Laser vibrometry case study: Chladni plate

The Chladni plate experiment is an excellent instrument for illustrating the capabilities of laser Doppler vibrometry (LDV) compared with conventional accelerometer sensor methods. Ernst Chladni, a German physicist born in the 18th century, is often labelled the “father of acoustics” and is credited with the invention of the Chladni plate, from whom it takes its Read more about Laser vibrometry case study: Chladni plate[…]