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Shakers
create vibrations of various frequencies and intensities.
See Also: Vibration Test, Vibration Controllers
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MESA Vibration Control
MESA tests are specifically required when the unit under test is too heavy or too big and exceeds the capabilities of a single shaker. In a MESA application, multiple shakers provide excitation to the test specimen in a single axis. Different relations like same magnitude and phase for drives, different phase for drives, different magnitude and phase for drives, can be set for this MESA test.
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High Temperature ICP® Accelerometers
PCB® offers specially designed and tested ICP® accelerometers for conducting vibration and shock measurements under demanding environmental conditions of up to 356 °F (180 °C). These sensors combine proven quartz and ceramic shear sensing technology with specialized, built-in microelectronic signal conditioning circuitry to achieve dependable operation in extreme temperatures and through repetitive temperature cycling. Laser-welded, hermetically sealed, lightweight titanium or stainless steel housings offer further protection from the environment. Prior to shipment, each sensor undergoes a battery of tests to ensure survivability for its intended use. Such tests include temperature soak at elevated temperatures, temperature cycling, and exposure to highly accelerated screening procedures with hydraulically actuated shakers.
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Slip Table Assembly
CSTA Series
Unholtz-Dickie introduced the Combined Slip Table Assembly (CSTA) in the late 1960''s to meet the demand for positive mechanical alignment between the shaker and its companion horizontal slip table. The challenge was to achieve this positive, permanent alignment feature without requiring an expensive seismic mass in the vibration lab floor. The original CSTA design has been continuously improved over the years and has now become the industry standard for permanently aligned, integral reaction mass slip tables.
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MIMO Vibration Control Overview
MIMO Testing has gained a huge momentum in the past decade with the development of multiple shaker table systems, the availability of Multiple-Input Multiple-Output (MIMO) controllers, and the readiness of the standards (e.g., Mil STD 810G method 527 and IEST DTE 022 working group recommendation). The Multiple-Input Multiple-Output (MIMO) Control System includes the following:
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Electrodynamic shakers
EV232
Labtone Test Equipment Co., LTD
Labtone EV series of electromagnetic vibration testing system simulate the vibration environment under the laboratory condition, and test the impact strength as well as reliability of various vibration test applications. In the laboratory, with the aid of vibration testing system, simulations of reproduction of sinusoidal, random, resonant search and dwell, classical shock and road models, etc. can be achieved. It is essential for product quality assurance, new product research and development.
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Dual Purpose Shakers
The Modal Shop’s dual purpose shakers are ideal for both vibration testing of small components and modal analysis. Small and lightweight, yet powerful electrodynamic shakers, the dual purpose line provides up to 110 lbf (489 N) pk sine force across a wide frequency range.
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General Purpose Single Axis Accelerometers
Motion of a rigid body can be characterized within six degrees of freedom. Providing mechanical excitation to simulate this motion as may be encountered in the real world can entail a variety of test machines. There are various pound/force vibration shakers for structural testing. Regardless of the apparatus, the goal is always to ensure that the product under test can adequately perform, and reliably survive, in the environment in which it will be deployed, or to which it will be exposed during transport. PCB® accelerometers provide the measurement signals needed to control the vibratory input and to analyze the product’s reaction to such testing.
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Measurement Power Amplifier
Qam
The amplifier is DSP controlled, with a very straightforward operation. Included is a white/pink noise signal generator. The internal signal module provides low crest noise signals to be able to reach high power levels from sound sources or electromagnetic shaker. External input of signal is equally possible, with spectral linearisation or without. This can be used for music, RASTI or any other signal
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Modal tests
Modal Testing and Modal Analysis - SIMO, MIMO, and ODSEffective and affordable modal testing and analysis solution for SIMO, MIMO, and ODS testing methods. The modal test is an indispensable tool to determine natural frequencies and mode shapes of any structure. With our solution, you are able to excite the structure with an impact hammer or modal vibration shakers and easily measure the responses. Import or draw your geometry for rich visualization and animation of your structures.
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Sine Reduction Test
Sine Reduction Test - Sine Processing With COLA SignalIntegrate and synchronize the data acquisition system seamlessly with your vibration shaker COLA signal and perform a powerful evaluation of structural properties on unlimited channels in real-time. The Dewesoft sine processing solution is easy to set up and will get you measuring right away.
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Vibration Chambers
ETV-SERIES
Environmental Chamber with Vibration Shaker Interface provision consists of Environmental Test Chamber, Vibration Shaker Interface Provision, HMI/PC PLC based Control System etc., This chamber is designed with unique features to meet the control parameters like Temperature, Humidity (optional) and 3 Axis Vibration Controls which are specified in the specification.
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Data Acquisition and Reduction
STI offers custom virtual instrument design with LABVIEW software and National Instruments data aquisition cards. Calibration systems include shock accelerometer calibration based on Hopkinson bar, transverse sensitivity, calibration of accelerometers at various temperatures (includes environmental chamber temperature control, shaker motion control, data acquisition and processing) as well as data aquisition and processing systems for turbomachinery and general vibration applications.
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Modal Testing
We pioneered the use of random excitation for modal testing and extended the method to include multishaker random testing and polyreference data processing. We have unsurpassed experience in modal testing of aerospace and industrial systems, including large scale testing for aerospace systems with over 400 accelerometers and eight shakers.
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vibration test system
Labtone Test Equipment Co., LTD
Labtone EV series of electrodynamic shaker vibration test System simulate the vibration environment under the laboratory condition, and test the impact strength as well as reliability of various vibration test applications.Labtone EV series of electromagnetic vibration testing system simulate the vibration environment under the laboratory condition, and test the impact strength as well as reliability of various vibration test applications. In the laboratory, with the aid of vibration testing system, simulations of reproduction of sinusoidal, random, resonant search and dwell, classical shock and road models, etc. can be achieved. It is essential for product quality assurance, new product research and development.Labtone EV series of electromagnetic vibration testing system is specially designed to meet the need for long time operation. Vertical and horizontal vibrations can be achieved by the installation of vibration resistant base. The standard platform is equipped with high efficiency airbag shock isolation device, so that the vibration transmitted to the building can be minimized. There is no need for additional foundation in most of the cases.A complete set of vibration testing system is composed of shaker, power amplifier and vibration measuring control system, in accordance with the relevant national and international standards (such as: MIL-STD, DIN, ISO, ASTM, IEC, ISTA, GB, GJB, JIS, BS, etc.) to provide technical support for establishing product quality inspection.
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Shaker Systems
Vibration Research Corporation
Small force vibration testing equipment and shakers for product and modal analysis testing. Each system consists of a shaker and a matching linear direct-coupled power amplifier. Additional components may be added to the basic system to tailor it to your specific needs.
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Vibration Shaker
Guangdong ALI Testing Equipment Co,. Ltd
JOEO electrodynamic shaker used to simulate vibration, shock Test, also provides turn-key solutions including combined environmental chambers JOEO Agree chambers drop, temperature, humidity, pressure, and other comprehensive environmental conditions in the production reliability test.
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Special Purpose Instruments
The Mechanical Impedance Sensor simultaneously measures an applied, driving-point force and response acceleration of a test structure for determining parameters such as mechanical mobility and mechanical impedance. The unit consists of a precision, shear mode accelerometer and a quartz force sensor in a common housing. Installation is primarily facilitated at the structural excitation points, in series with a stinger and vibration shaker.
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Vibration Shakers
Vibration Shakers and Modal ExcitersFull 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.
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Voltage and Continuity Testers
Amprobe voltage and continuity testers have built-in shakers for fast, easy troubleshooting with CAT IV 600V/CAT III 1000V input protection. To safely detect voltages up to 122kV without contact to the current carrying conductor, choose an Amprobe high-voltage tester. These intrinsically safe tools are ideal for industrial, utility, and mine applications.
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Vibration Shaker and Control Amplifier
The performance of this Vibration System supports a wide variety of Vibration and Impact Shock capabilities, at g levels and weight-handling levels not previously available at Pacific. Applications include product development, design conformance, qualification, certification, and production screening to Military, Aerospace, Automotive, and Medical specifications.
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Screw Presenters
It’s frustrating when you waste precious time fumbling for screws, but you can solve the problem by replacing an open bin or shaker tray with a Mountz screw presenter. These tools deliver up to two screws per second to a fixed point where a human or robotic operator picks them up, cutting production time in half. Mountz screw presenters are engineered to stay online without jamming or needing repair. Small enough to fit onto crowded benchtops, Mountz screw presenters provide all the function of high-priced custom screw feeder systems at a percentage of the price.
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Modal Shakers
The Modal Shop’s modal shakers are a proven solution in test laboratories around the world. With force ratings from 4.5 to 100 lbf (20 to 440 N), these shakers are suitable for a wide range of modal analysis applications. When performing experimental modal analysis and structural testing, the choice of excitation function and system will make the difference between a good measurement and a poor one. For many applications, an electrodynamic shaker system is the ideal choice. The Modal Shop’s line of modal shakers is designed to be highly portable, rugged and easy to set up in order to facilitate the best testing results. The exciter size allows a diversity of placement locations relative to the test structure, while minimizing any unwanted interaction between the exciter and test structure.
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Vibration Calibrator
SV 111
SV 111 vibration calibrator is the State of the Art instrument designed for human vibration measurements according to ISO 8041. The design of the calibrator is based on the triaxial reference accelerometer and microprocessor controlled shaker. These both features assure excellent stability of the calibration levels and their frequency independently from mass of the testing object, like also indicate improper test object fixing by monitoring of shaker vibration in all three axis simultaneously.
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Shaker Control Complex
K-5201
n the course of vibration tests of finished products or prototypes, a number of steps are carried out that require certain, often very complex, algorithms for the operation of bench equipment and the processing of measurement results. Automation of the test process allows to reduce time costs, improve the accuracy of the task, the reliability of measurements, the visibility of information and minimize the impact of the human factor.
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Hydraulic Vibration Shaker
KRD70 series
KRD70 series hydraulic vibration shaker converts the energy of high-pressure liquid into the power of the reciprocating motion of the cylinder through the electro-hydraulic servo valve. Especially suitable for vibration tests requiring low frequency and high force. It can realize sine, random, multi-point excitation and shock test (sine, random, sine on random, random on random, or resonant search & dwell). It’s applied for reproducing the vibrations of transportation vehicles, bulk packaging products, machinery, electrical and electronic products in the actual environment, thereby optimizing the product structure and saving costs.
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Environmental Simulation Testing
MET's Environmental Simulation Labs, on both coasts, employ numerous environmental chambers, including several large walk-in chambers. Hydraulic and electro-dynamic shakers are used for a wide range of vibration testing, from ISTA packaging to seismic compliance testing. MET's hydraulic vibration systems are capable of full level (Zone 4) seismic simulation.
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Fiber Shaker
MPX-SR3
Arden’s MPX Modal Explorer makes measurement of Encircled Flux easy, and accurate, and it complies with international standards. But if you are measuring laser-based transmission light sources for multimode systems you may need to use a test jumper assembly and fiber shaker in order to avoid “speckle”. Industry standards (for example IEEE 802.3aq and FOTP– 203) call for the use of a mechanical fiber shaker.
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Open Air Shakers
Providing Consistent, Repeatable Reciprocating Shaking Action for a Variety of Applications
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Vibration Test Technology
These vibration exciters (also called shakers) use permanent magnets and are available as portable and stationary systems for simulating ambient vibration conditions. Robust design ensures a long service life, and typical applications include structure analysis and testing smaller subassemblies. These shakers are characterized by high lateral and axial stiffness and come in lightweight construction as specified by industrial users.
