Full range of modal and inertial shakers with integrated and easy-to-use amplifiers. Our permanent magnet shakers are compact, lightweight, and powerful general-purpose shakers that can be used for modal and vibration testing. They have a high DUT capacity despite their small sizes.
 
Permanent magnet shakers
Dewesoft permanent magnet shakers are compact, lightweight, and powerful general-purpose shakers that can be used for modal and vibration testing. They have high DUT capacity despite their small sizes. PM-20 and PM-100 have an integrated amplifier and a sine wave signal generator where the frequency can be adjusted from 1 Hz to 15,000Hz.
 
Advantages
Lightweight, durable, portable, and easy to use
An adjustable trunnion base provides a high degree of flexibility
Broad frequency range
Embedded power amplifier and signal generator for PM-20 and PM-100
 
Applications for permanent magnet shakers
Permanent Magnet shakers are used for Vibration testing and Shock testing:
Vibration testing of micro parts, assemblies, and electronics Modal testing
Shock testing
Sensor calibration
Separation and compacting of powders
Fatigue and resonance testing
Velocity transducer or high-speed actuator
Mechanical impedance measurement
Education and research
 
Modal shakers
Modal testing can be performed with modal hammers or shakers. If high-frequency excitation content or signal-controlled testing is desired, then modal shakers are the only excitation solution. Dewesoft modal shakers are lightweight and powerful modal shakers that can go up to 15,000 Hz and provide force levels up to 440N with a maximum 25mm stroke.
 
Advantages
 
Modal stinger can be easily adjusted by the through-hole armature
Lightweight, durable, portable, and easy to use
The adjustable trunnion base provides high flexibility
Up to 25mm stroke and broad frequency range
 
Applications for modal shakers
Modal shakers can be used for Modal testing and Structural Dynamics. 
The series of Dewesoft modal shakers covers a wide range of structures for dynamic characterisation from electronic boards and sub-components to machinery, vehicles and aircraft, and even constructions.
 
Components, Machinery, Vehicles, Aircraft, and constructions
Aerospace and
Automotive
 
Modal Testing is a prerequisite for design and product validation in aerospace and automotive industries as well as many others.
 
Inertial shakers
The shakers used in modal testing and in-flight tests of aircraft are usually electrodynamic shakers. However, the traditional shakers are not very portable and the attachment process takes time. Dewesoft inertial shakers are easily mounted and have great mobility. It can be used as a handheld.
 
Advantages
Compact and lightweight design
Superior low-frequency performance
Any angle mounting
Low friction bearing guided
 
Applications for inertial shakers
Inertial shakers are used for Vibration and Modal testing. Inertial shakers are used for testing car chassis, squeaks, and rattle testing in cars, civil engineering prototype testing, building structures, floor loading resonances, ships’ flight decks, and helicopters rotor simulation, submarines, geophysical surveys, and vibration cancellation systems.
Shaker amplifier included
All our vibration shakers come included with an amplifier out of the box.
 
MS-20 and MS-100 vibration shakers have integrated amplifiers. With this integrated amplifier, it is very easy to use the shaker. You only need to plug the electric cable and the shaker is ready to run.
 
DS-MS-250 and DS-MS-440 come with a dedicated external amplifier. Specifications can be found on the tech specs page.
 
 
Perfect data acquisition system companion
We offer very high dynamic data acquisition systems to accompany our vibration shakers and offer a total all-in-one tool for vibration testing and vibration analysis. We recommend SIRIUS modular data acquisition systems with analog outputs for the best combination.
 
Systems include direct IEPE sensor inputs with 160dB dynamic range. That's not all. Signal amplifiers are available for virtually any sensor or signal. TEDS IEEE 1451.4 technology makes sure that your TEDS sensors are connected, recognised, and configured in the software automatically.
 
Award-winning data acquisition software makes it easy to set up measurement under a minute. A software license is included in every system. Free lifetime software upgrades included. No yearly maintenance or upgrade fees, free online training courses.
 
Our data acquisition systems are modular and expandable. Can you imagine an FFT analyzer with thousands of channels? We can... Systems can be gradually expanded from one to an unlimited number.
 
Modal testing and modal analysis
In real-life applications, machine parts and mechanical systems are rarely under static loading. Most of the time they are excited by dynamic loads. The structure responds to these dynamic loads according to its dynamic parameters such as natural frequencies and mode shapes. Therefore, an engineer has to have a solid insight into the dynamic behaviour of the structure which has been designed. The process of finding the dynamic behaviour of a structure is called structural system identification.
 
Structural system identification consists of finding the transfer function of the system which is established by finding the modal parameters of the structure such as natural frequencies, damping, modal vectors, and residues.
 
The transfer functions of a structure can be obtained by mathematical modelling or by experimental methods. The experimental way to obtain the transfer function of a structure is achieved by measuring the response of the structure to a measured input. The responses are generally acceleration and the inputs or excitations are generally impulses or random/sine signals.