We design and build a full range of universal testing machines (UTMs) and specialized lab equipment for rigorous quality control, research, and development.
Mechanical and Dynamic Test Equipment
Compare vibration testing machines for packaging transport simulation, controlled sine or random excitation, high-frequency testing and other documented vibration profiles. The correct system is defined by the test method, specimen and fixture mass, frequency range, displacement, velocity, acceleration, force and control requirements—not by a model name alone.
Define the test before selecting the system
01 · TEST PROFILE
Identify the current procedure and whether the required input is fixed-displacement transport vibration, sine, random, shock or another defined profile.
02 · TEST ARTICLE
Provide specimen dimensions and mass together with fixture, head-expander or table requirements and the intended test direction.
03 · SYSTEM ENVELOPE
Confirm frequency, displacement, velocity, acceleration, force or payload, controller channels, facility utilities and safety requirements.
Need to translate a vibration specification into a system configuration?
Send the procedure and edition, test profile, specimen and fixture mass, mounting dimensions, frequency range, displacement, velocity, acceleration, required test direction, controller channels, facility utilities and destination country.
System Selection
Start with the required vibration profile and test article—not with maximum force or frequency alone. Compare each system by supported test type, specimen and fixture mass, frequency range, displacement, velocity, acceleration, force or payload, test direction, controller and facility requirements. Open the product page for its verified performance envelope before requesting a configuration.
System Type Comparison
The correct vibration testing machine depends first on the required input motion and test objective. Mechanical, electrodynamic and servo-hydraulic systems use different drive and control principles; one type should not be assumed to reproduce every vibration profile.
Use the current procedure and the complete performance envelope—not one headline specification—to compare systems.
Packaging and Repetitive Shock
Best suited to: packaged-product fixed-displacement vibration or repetitive-shock procedures when supported by the machine configuration.
Verify: drive motion, table size, rated package load, fixed displacement, CPM or Hz range, restraint method, timer and procedure compatibility. It is not a substitute for controlled random vibration.
Controlled Dynamic Excitation
Best suited to: controlled sine, random or compatible shock profiles for components and assemblies when the shaker, amplifier and controller are rated for the requested test.
Verify: separate sine, random and shock force ratings; frequency, displacement, velocity and acceleration limits; moving mass, payload, fixture, test direction, controller channels and cooling.
Low Frequency and Large Motion
Best suited to: low-frequency, high-force or large-displacement dynamic loading of heavy specimens and structures when supported by a fatigue-rated actuator and load train.
Verify: dynamic force, frequency, stroke, velocity, waveform and amplitude limits; servo valve, hydraulic power supply, controller, fixtures, sensors, floor loading, utilities and safety provisions.
Select by the required profile—not by the technology name alone.
Send the procedure, specimen and fixture mass, mounting dimensions, frequency range, displacement, velocity, acceleration, force or payload, direction and controller requirements for review.
Choose the system from the required vibration profile, test article and facility conditions—not from maximum frequency or force alone. Use these five checks to define the motion, payload, controller, measurement and verification requirements before requesting a configuration.
Start with the required test profile—not with a shaker technology. A transport simulation table, electrodynamic shaker and servo-hydraulic system create different motion and are not interchangeable.
State whether the goal is package transport simulation, resonance search, sine dwell, random vibration, repetitive shock, durability cycling or another defined procedure.
Provide the applicable ASTM, IEC, ISO, ISTA, MIL-STD, customer or internal procedure, its edition and the exact method or profile to be performed.
List frequency, displacement, velocity, acceleration, duration, sweep or spectrum details, tolerances, control strategy and required test directions.
A vibration test system applies a defined mechanical motion to a package, product, component or assembly under controlled laboratory conditions. Depending on the selected technology, it may reproduce repetitive transport motion, controlled sine vibration, random vibration, shock-compatible profiles or low-frequency high-displacement loading.
The complete system is more than the vibration generator. It includes the drive source, moving table or interface, fixture, controller or operating controls, sensors and—when required—data acquisition. The applicable test procedure and verified system configuration determine what can actually be performed and reported.
Mechanical, electrodynamic or servo-hydraulic hardware generates the required motion within its rated envelope.
The mounting interface transfers motion to the specimen and supports the required direction and load.
Controls define speed, frequency, profile, duration, limits and sequencing supported by the configured system.
Accelerometers and acquisition channels are required when motion or specimen response must be controlled, measured or recorded.
May document operating frequency or cycles per minute, fixed displacement or table motion, exposure time and observed package or product condition. It should not be described as controlled random vibration unless the actual system provides that capability.
When equipped with the required controller and sensors, the system can control and record acceleration profiles and may measure response, resonance or transmissibility. Supported sine, random and shock modes must be confirmed from the configured ratings.
A suitably rated dynamic system may control and record force, displacement, velocity or acceleration for low-frequency, high-force or large-displacement tests. Capability depends on the actuator, servo valve, controller, sensors and hydraulic power unit.
Results must be interpreted with the test procedure, specimen and fixture, mounting direction, profile, controller settings, sensor locations, tolerances, duration and inspection criteria. A vibration exposure alone does not prove performance under drop, impact, compression, climatic or every real distribution condition.
A vibration test system applies a documented motion profile to a specimen under controlled laboratory conditions. The exact workflow depends on the system type, but the sequence is always defined by the test profile, mounting method, control mode, measurement chain and pass/fail criteria.
Transport simulation tables, electrodynamic shakers and servo-hydraulic systems all follow the same logic: prepare the article, configure the envelope, run the profile, monitor the response and document the result against the procedure.
Start with the specimen, the failure mode you are trying to evaluate and the required profile. Record the product mass, fixture mass, mounting direction, frequency range, acceleration or displacement target, duration and any standards or customer method that govern the test.
Secure the device under test, package or assembly to the table, slip table or other interface using a fixture that matches the actual geometry and loading direction. A correct fixture preserves the intended response instead of introducing unwanted resonance, looseness or secondary motion.
Select the control strategy that fits the system type and test objective, then confirm the usable frequency, displacement, velocity or force range. For transport simulation, that may mean table motion and repeatability; for electrodynamic shakers, sine, random or shock control; for servo-hydraulic systems, low-frequency high-force or large-displacement motion.
Execute the programmed profile while the controller and sensors track the actual response. Depending on the setup, the system may record acceleration, displacement, force, transmissibility or other response channels and stop automatically if the defined limits are reached.
Compare the recorded response with the acceptance criteria, then document the specimen condition, operating settings, sensor locations and any observed damage or performance change. The final result should always be tied back to the documented method, sample, fixture and operating envelope rather than the machine name alone.
A vibration result is valid only for the stated specimen, fixture, profile, duration, control mode and measurement setup. If you need to compare system types or size the correct platform, start with the test article and the required profile, then request a configuration review.
Different vibration systems answer different engineering questions. Match the test objective, specimen and required motion profile to the correct platform before comparing frequency, displacement, acceleration, force or payload ratings.
Use a controlled sine sweep to identify resonant frequencies, then apply a documented dwell or endurance profile where the procedure requires it. The system must provide suitable frequency, force, displacement and closed-loop control for the combined specimen and fixture.
Apply a specified power spectral density profile to assess structural integrity, connections and functional performance under broadband excitation. Duration should follow the governing method or a justified acceleration model; it should not automatically be treated as an equivalent number of service years.
Use fixed-displacement, repetitive-shock or random vibration methods according to the selected packaging procedure. Table motion, payload, restraints and sequence depend on the packaged product and the applicable ISTA, ASTM or customer-defined method.
Where simultaneous stresses are required, a compatible shaker can be integrated with a climatic chamber. Confirm chamber access, thermal range, fixture design, sealing, cooling, sensors and controller compatibility as part of the complete configuration.
Send the specimen and fixture mass, dimensions, test direction, profile type, frequency range, displacement, velocity, acceleration or force requirement, duration, procedure and installation conditions.
Still unsure which system is right for your validation challenges? Our engineering team specializes in translating product requirements into precise test specifications.
Use F = m × a only as the starting estimate. A valid shaker selection must include every moving mass and then check the complete sine, random or shock profile against the system’s applicable force, displacement, velocity, acceleration and frequency limits.
TOTAL MOVING MASS
Include the specimen, fixture, adapters, head expander or slip-table components that move during the test, together with the shaker armature or other moving elements required by the manufacturer’s sizing method.
PROFILE AND UNITS
For a sine profile, use the required peak acceleration with consistent units. Random and shock sizing require the actual spectrum or pulse, duration and bandwidth; a single GRMS or peak-g value does not describe every limiting condition.
PERFORMANCE ENVELOPE
Compare the complete loaded profile with the proposed system curves and separate sine, random and shock ratings. Confirm low-frequency displacement, velocity, acceleration, thermal limits, test direction and any manufacturer derating before selection.
Send the complete profile plus the specimen, fixture and moving-interface masses. DERUI can identify the inputs needed for a loaded performance review.
Sometimes—but the presence of a digital controller does not prove that the shaker, amplifier and mechanical interfaces can reproduce every requested profile. Each mode must fit within the verified operating envelope of the complete loaded system.
CONTROL CAPABILITY
Identify sine sweep or dwell, random PSD, classical shock pulse and any combined-mode requirements. Confirm controller software, input channels, control strategy, abort limits, data recording and licensing for the actual methods.
MODE-SPECIFIC RATINGS
Check the applicable force rating, frequency, displacement, velocity, acceleration and duration for each waveform. Shock performance may be limited by pulse shape, duration, payload and available displacement even when sine and random profiles fit.
LOADED CONFIGURATION
Include the specimen, fixture, armature, head expander, slip table and other moving components. Verify the mounting direction, cooling, amplifier and mechanical interfaces for every profile rather than assuming one bare-table rating covers all tests.
The fixture and measurement points determine how commanded motion reaches the test article. Excess mass, insufficient stiffness, loose joints, poor geometry or an unsuitable control location can distort the profile and make the recorded result difficult to interpret.
FIXTURE DYNAMICS
Design the fixture for the specimen, direction, frequency range and force level. Review material, joints, fasteners, mounting pattern, natural frequencies and cross-axis response instead of assuming the stiffest or lightest-looking design is adequate.
LOAD TRANSFER
The fixture should transmit the required motion while limiting looseness, rocking, distortion and local damage at mounting points. Torque, contact surfaces and installation sequence should be documented and repeated.
MEASUREMENT POINTS
Place control accelerometers according to the procedure and control strategy; use response sensors where product behavior must be measured. Confirm orientation, attachment method, cable routing, mass loading, channel range and calibration status.
Send specimen and fixture drawings, mounting pattern, mass, center of gravity, test axes, frequency range and proposed sensor locations.
An accurate quotation must define the complete system—not only a shaker or table model. Provide the information below so the vibration source, amplifier or drive, controller, table interfaces, fixture, sensors, cooling, installation and acceptance scope can be reviewed together.
TEST ARTICLE
Send specimen and fixture masses, dimensions, center of gravity, mounting drawing, table-interface requirement, test directions and any head expander, slip table, restraint or environmental-chamber requirement.
TEST PROFILE
Provide the current procedure and every required sine, random, shock or transport profile with frequency, displacement, velocity, acceleration, force or payload, duration, axes, tolerances and sequence.
CONTROL AND DATA
List control and response channels, accelerometers, sensor locations, functional monitoring, abort limits, data acquisition, software methods, export formats and required report fields.
SITE AND DELIVERY
State available electrical power, cooling, compressed air or hydraulic utilities, floor loading, room access, noise or exhaust constraints, destination country, installation scope, training needs, acceptance tests and required calibration or verification documents.
Attach the test procedure, profile files, specimen and fixture drawings, site utility information and a sample report where available. DERUI can then identify missing inputs before issuing a technical configuration.
Start with the exact procedure and current edition, then extract the required profiles and acceptance conditions. A machine name or broad statement of “compliance” does not prove that the proposed configuration can perform every method within IEC, ISO, ASTM, ISTA, MIL-STD or a customer specification.
DOCUMENT
Provide the standard, method, procedure number, edition, test category and any customer amendments. Different procedures under the same standards family can specify different specimens, axes, severities, durations and reporting.
PROFILE
List sine, random, shock, repetitive-shock or other profiles; frequency range; PSD or acceleration levels; displacement; velocity; pulse shape; duration; axes; tolerances; control strategy and sequence.
ACCEPTANCE
State required control and response channels, sensor locations, pre- and post-test checks, functional monitoring, abort limits, inspection criteria, data retention and report fields.
Attach the relevant method pages or customer specification so the system envelope, controller, sensors, fixtures and documentation can be reviewed together.
A test can be performed in more than one direction, but vertical, horizontal and simultaneous multi-axis operation are not the same configuration. Rotating the specimen or adding a slip table normally enables sequential single-axis tests; it does not automatically create a coordinated multi-axis system.
VERTICAL AXIS
Confirm table size, mounting pattern, payload support, fixture height, center of gravity and access. The loaded vertical profile must remain within force, displacement, velocity and acceleration limits.
HORIZONTAL AXIS
A trunnion and slip table may support horizontal excitation on suitable electrodynamic systems. Review bearing and drive-bar mass, alignment, lubrication or utilities, floor space and the reduced loaded performance of the horizontal configuration.
MULTI-AXIS TESTING
Sequential testing applies each axis separately by reorientation or different interfaces. Simultaneous multi-axis testing requires purpose-built actuators, tables, controls, sensors and coordination; upgrade feasibility must be evaluated from the original system architecture.
Choose the system from the required vibration profile, test article, fixture and test direction—not from a technology name or maximum rating alone. Transport simulation tables, electrodynamic shakers and servo-hydraulic systems operate in different frequency, motion and load ranges and are not interchangeable by default.
PACKAGED-PRODUCT TESTING
Choose this route when the test article is a package, shipping container or unit load and the procedure specifies fixed-displacement, repetitive-shock or random transport vibration. Confirm the exact motion type, table size, payload, restraint method, test duration and current ISTA, ASTM or customer procedure before selecting the equipment.
CONTROLLED DYNAMIC EXCITATION
An electrodynamic system is commonly considered for components and assemblies requiring controlled sine, random or compatible classical-shock testing. Verify the separate force ratings for each mode together with total moving mass, frequency, displacement, velocity, acceleration, fixture, controller, cooling and vertical or horizontal test requirements.
LOW-FREQUENCY HIGH-LOAD MOTION
A servo-hydraulic configuration may be appropriate for heavy specimens, structures and low-frequency tests requiring high dynamic force or large displacement. Review actuator force, usable stroke, velocity, waveform, frequency, load train, hydraulic power supply, cooling, foundation, sensors, controls and safety requirements as one system.
Send the procedure and edition, specimen and fixture mass, dimensions, mounting interface, test direction, profile type, frequency range, displacement, velocity, acceleration, force or payload requirement, duration, controller channels, available utilities and destination country.
These limits describe different parts of the vibration system’s usable motion envelope. A test can remain below maximum frequency and force yet still exceed the available displacement, velocity or acceleration at another point in the profile.
LOW FREQUENCY
Low-frequency motion often requires greater travel to reach the specified acceleration. Confirm whether displacement is stated as peak, peak-to-peak or another convention, and compare it with the system’s usable rating for the selected mode.
MID-RANGE MOTION
Velocity can become the limiting factor between the displacement-controlled and acceleration-controlled regions. Review peak or RMS conventions, profile duration, cooling and any reduced-field or duty-cycle conditions.
HIGH FREQUENCY
At higher frequencies, available acceleration and force may limit the loaded test. Fixture resonance, control stability, sensor mounting and the specimen response must also be considered; the published maximum frequency alone does not establish suitability.
Send the frequency breakpoints and required displacement, velocity, acceleration and force values with their units and peak, RMS or peak-to-peak conventions.
The shaker moves a complete assembly, not the specimen alone. Added mass, fixture dynamics, mounting interface, center of gravity and test direction can reduce usable acceleration or introduce loads that are not visible in a simple payload figure.
MOVING MASS
Record the specimen, fixture, adapters, fasteners, head expander, slip-table drive components and other moving masses required by the proposed setup. Use these values in the manufacturer’s loaded performance review.
GEOMETRY AND MOMENTS
Provide overall dimensions, mounting pattern, center-of-gravity location and any offset or overhang. A tall or eccentric article can create overturning moments and cross-axis forces even when its mass is below the nominal payload.
TEST DIRECTION
State every required axis and whether the specimen can be reoriented. Vertical armature, horizontal slip table and purpose-built multi-axis configurations have different moving interfaces, support conditions and usable performance.
It can be done when the shaker, climatic chamber, interfaces, fixtures, sensors and controls are designed to operate together. Combined testing is an engineered configuration—not a default capability of every vibration system or environmental chamber.
MECHANICAL INTERFACE
Review chamber opening, table or armature interface, thermal barrier, flexible sealing, fixture height, specimen access and relative movement. The connection must preserve the required motion without compromising the chamber environment.
OPERATING ENVELOPE
Define temperature and humidity ranges, transition rates, dwell periods, vibration profile, duration and simultaneous sequence. Verify cooling, heat transfer, condensation control and any derating of the shaker, sensors or fixtures.
CONTROL AND SAFETY
Confirm accelerometer and cable temperature ratings, feedthroughs, chamber sensors, control channels, interlocks, abort limits, grounding and emergency procedures. Document which system controls each part of the combined sequence.
Derui Test Equipment
We are a dedicated manufacturer of precision material testing equipment, committed to supporting global industries with reliable testing solutions.
Our Core Product Lines:
Universal Testing Machines (Tensile/Bend/Compression)
Environmental Simulation Chambers (Climatic, Thermal Shock)
Specialized Testing Equipment for Packaging, Furniture & Materials
