日本av电影网站The Modal exciters is useful for Experimental modal analysis on most mechanical structures where input (force) measurement is one of the most critical aspects of a successful modal test. Errors originating here will not only effect each and every frequency response function measurement, but also, the errors will typically be “hidden” and, unlike the output (vibration) measurements, difficult to detect visually.Modal exciters is help in obtaining accurate and reliable force measurements.To get accurate and reliable force measurements test set up require following

Choosing the best exciter location
Minimising exciter/test structure interaction
Distributing and minimising dynamic force levels
日本av电影网站 Ensuring sufficient low frequency energy input

A complete range of dedicated accessories is available, providing an unsurpassed high degree of measurement precision and ease of setup. This range includes force transducers, impedance heads, exciter stands for easy horizontal positioning, as well as a family of stingers. Push/pull and various tension wire types are available with different attachment methods, including a novel “snap on” accessory for fast mounting and dismounting of push/pull types of stingers.

The Brüel & Kjær range of modal exciters include:
Force range from 100 N to 1000 N (sine)
Complete line of perfectly matched, heavy duty power amplifiers
Low weight, high rigidity, precision machined magnesium moving element
Superior force-to-weight ratio due to unique rare earth magnet technology
Possibility to use tension wire technology
Up to 2-inch peak-to-peak displacement for enhanced low frequency performance
日本av电影网站 Complete line of accessories, crucial for a successful modal test – stingers (push/pull and piano wire), standard trunnions, rugged horizontal exciter stands and piano wire with electrical pre-tensioning system

Uses

General mechanical mobility measurement,
Experimental modal analysis on most mechanical structures,
SISO, MISO, SIMO, MIMO modal test applications,
Advanced structural dynamics investigations,
Structural damage detection
日本av电影网站 Finite element model correlation

Modal-Exciters

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