Vibration Shaker System for Sine Burst Test, Random and Sine Vibration Testing
Brand Name:PRECISION
Certification:CE
Model Number:VTS-20
Minimum Order Quantity:1
Delivery Time:15 working days
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Vibration Shaker System for Sine Burst Test, Random and Sine Vibration Testing
In the ever - evolving landscape of product development and quality
assurance, vibration testing has emerged as an indispensable tool
across a wide range of industries. From aerospace and automotive to
electronics and consumer goods, ensuring the reliability and
durability of products under various vibration conditions is
crucial. A vibration shaker system capable of performing sine burst
tests, as well as random and sine vibration testing, offers a
comprehensive solution for evaluating the performance of products
in real - world scenarios.
1. The Significance of Different Vibration Tests
Sine Burst Testing
Sine burst testing involves subjecting a product to a series of
short - duration, high - amplitude sine wave vibrations. This type
of testing is particularly useful for identifying resonance
frequencies in products. Resonance occurs when the natural
frequency of a product matches the frequency of the applied
vibration, leading to a significant increase in the amplitude of
vibration. In aerospace applications, for example, components such
as aircraft engine parts need to be tested for resonance. If a part
resonates during flight, it can experience excessive stress,
leading to premature failure. By performing sine burst tests using
a vibration shaker system, manufacturers can pinpoint these
resonance frequencies and make design modifications to avoid
resonance - related issues.
Random Vibration Testing
Random vibration testing aims to simulate the complex and
unpredictable vibrations that products encounter in real - world
environments. Products are exposed to vibrations from multiple
sources, such as engine vibrations in a vehicle, vibrations from
machinery in an industrial setting, or vibrations during
transportation. These vibrations have a wide range of frequencies
and amplitudes. Random vibration testing helps in assessing how a
product will perform under such chaotic vibration conditions. For
instance, in the electronics industry, smartphones and laptops are
tested for random vibrations to ensure that their internal
components, like circuit boards and hard drives, can withstand the
vibrations during normal use and transportation. This testing
method allows manufacturers to identify potential weaknesses in the
product's design, such as loose connections or fragile components.
Sine Vibration Testing
Sine vibration testing involves applying a single - frequency sine
wave vibration to a product. It is used to evaluate the response of
a product to a specific frequency over a period of time. This type
of testing is useful for understanding how a product will perform
under periodic vibrations. For example, in the automotive industry,
engine mounts are tested with sine vibrations to determine their
ability to isolate engine vibrations from the vehicle's body. By
controlling the frequency and amplitude of the sine vibration,
manufacturers can assess the effectiveness of the engine mount
design in reducing vibrations and improving the overall comfort of
the vehicle.
2. Understanding the Vibration Shaker System
Working Principle
The vibration shaker system operates on either an electrodynamic or
hydraulic principle. In an electrodynamic system, an electrical
current is applied to a moving coil suspended in a magnetic field.
According to Fleming's left - hand rule, this creates a force that
causes the coil to move. The movement of the coil is transferred to
the shaker table, on which the product or test specimen is placed.
To generate different types of vibrations, the electrical current
supplied to the coil is precisely controlled. For sine burst tests,
the current is adjusted to produce short - duration, high -
amplitude sine waves. For random vibration testing, a random signal
generator is used to control the current, creating a complex
pattern of vibrations. In a hydraulic system, hydraulic fluid is
used to generate the force that causes the shaker table to vibrate.
The flow and pressure of the hydraulic fluid are regulated to
achieve the desired vibration profiles.
Components of the Vibration Shaker System
The vibration shaker system consists of several key components. The
power amplifier is responsible for supplying the necessary power to
drive the shaker. In an electrodynamic system, it amplifies the
electrical signal to a level sufficient to generate significant
vibrations. The controller is the brain of the system. Operators
can input specific vibration parameters into the controller, such
as the frequency range, amplitude, and the type of vibration test
(sine burst, random, or sine). The controller then generates the
appropriate control signals to the power amplifier. The shaker
table is designed to be a rigid and flat platform to ensure uniform
vibration transfer to the test specimen. Additionally, sensors such
as accelerometers are placed on the shaker table and the test
specimen to measure the actual vibration levels. These sensors
provide feedback to the controller, enabling real - time
adjustments to maintain the desired vibration profile.
3. How the Vibration Shaker System Performs Different Tests
Sine Burst Testing Procedure
For sine burst testing, the operator first sets the parameters in
the controller, including the frequency of the sine burst, the
amplitude, and the number of bursts. The controller then sends a
signal to the power amplifier, which in turn drives the shaker to
produce the specified sine burst vibrations. The test specimen is
placed on the shaker table, and the accelerometers measure the
response of the specimen to the sine bursts. If the specimen shows
signs of excessive vibration or resonance, the data collected by
the accelerometers can be used to analyze the problem. For example,
if a component in a satellite experiences resonance during a sine
burst test, engineers can use the data to modify the component's
design or add damping materials to reduce the resonance effect.
Random Vibration Testing Process
In random vibration testing, the controller uses a random signal
generator to create a random electrical signal. This signal is then
amplified by the power amplifier and sent to the shaker. The shaker
table vibrates in a random pattern, simulating real - world
vibrations. The accelerometers continuously measure the vibration
levels of the shaker table and the test specimen. The controller
compares the measured vibration levels with the desired random
vibration profile and makes adjustments to the power amplifier if
necessary. For instance, when testing a medical device for random
vibrations, the vibration shaker system can ensure that the device
can withstand the vibrations it may encounter during transportation
and normal use.
Sine Vibration Testing Execution
During sine vibration testing, the operator sets the frequency and
amplitude of the sine wave in the controller. The controller then
generates a sine - wave signal that is amplified by the power
amplifier and sent to the shaker. The shaker table vibrates at the
specified frequency and amplitude, and the accelerometers monitor
the response of the test specimen. This data can be used to
evaluate the performance of the specimen at that particular
frequency. For example, when testing the suspension system of a
vehicle, sine vibration testing can help determine the optimal
design parameters to reduce vibrations at specific frequencies,
such as those caused by the vehicle's engine or road
irregularities.
| Rated Sine/ Random/ Shock Force | 3,000 kgf/3,000kgf/6,000 kgf | Armature Mass | 30 kg |
| Frequency Range | 5-3,000 Hz | Inserts Size (Standard) | M10 |
| Max./ Continuous Displacement p-p | 51 mm/51 mm | Load Attachment Points (Standard) | 17 |
| Max.Velocity | 2.0 m/s | Natural Frequency-Thrust Axis | <3Hz |
| Max.Sine/ Random Acceleration | 100/60g | Max. Vertical Load Support | 500 kg |
| Armature Diameter | 440 mm | Stray field @152 mm above table | ≤1mT (10 gauss) |
| Fundamental Resonance Frequency | 2t500Hz(nom.)±5% | Dimension LxWxH | 1,270 mmx980mmx1,135mm |
| Allowable Armature Overturning Moment | 500 Nm | Weight (Uncrated) | 2,500 kg |
4. Performance Features of the Vibration Shaker System
High - Precision Vibration Control
The vibration shaker system offers high - precision control over
the vibration parameters. The frequency accuracy is typically
within ±0.1% of the set value, ensuring that the vibrations are
generated at the exact frequencies required for each test. The
amplitude accuracy is also highly reliable, with an accuracy of
around ±1% of the set acceleration value. This level of precision
is crucial for obtaining accurate and repeatable test results. For
example, when testing a high - performance audio speaker for sine
vibrations, the vibration shaker system needs to precisely
reproduce the frequencies and amplitudes to accurately assess the
speaker's performance.
Wide Dynamic Range
The ability to cover a wide dynamic range is another important
feature. The system can generate vibrations with very low
amplitudes, suitable for testing sensitive products such as
microelectronics, and high - amplitude vibrations for products that
need to withstand harsh conditions, like construction equipment.
The wide dynamic range allows for the testing of a diverse range of
products across different industries. Whether it's a delicate
sensor in a medical device or a heavy - duty engine component, the
vibration shaker system can simulate the appropriate vibration
levels.
Robust and Reliable Construction
Given the repetitive and demanding nature of vibration testing, the
vibration shaker system is built with robust and reliable
construction. The shaker table and other mechanical components are
made of high - strength materials such as steel to withstand the
high forces generated during vibration testing. The electrical and
hydraulic components, including the power amplifier and controller,
are designed to operate continuously under high - stress conditions
without degradation. The system is also equipped with safety
features, such as overload protection and emergency stop
mechanisms, to protect the test specimen, operators, and the
equipment itself. This robust construction ensures that the
vibration shaker system can perform a large number of tests over
its lifespan without significant maintenance, reducing downtime and
increasing the efficiency of the testing process.
5. Applications of the Vibration Shaker System in Different
Industries
Aerospace Industry
In the aerospace industry, the vibration shaker system is used
extensively for testing aircraft components. From engine parts to
avionics systems, these components need to be highly reliable. Sine
burst testing helps in identifying resonance frequencies in engine
blades, while random and sine vibration testing ensure that the
components can withstand the vibrations during flight. For example,
the landing gear of an aircraft is tested with random vibrations to
simulate the impact and vibrations during landing. This helps in
ensuring the safety and reliability of the aircraft during takeoff
and landing.
Automotive Industry
The automotive industry benefits greatly from the vibration shaker
system. Engine components, suspension systems, and interior
components are tested using different vibration tests. Sine
vibration testing is used to optimize the design of engine mounts,
while random vibration testing helps in ensuring that the interior
components, such as dashboards and seats, do not produce annoying
vibrations during normal driving. For example, the audio system in
a car is tested with sine and random vibrations to ensure that it
functions properly and does not produce any distortion or damage
under vibration.
Electronics Industry
In the electronics industry, the vibration shaker system is used to
test a wide range of products, from smartphones and tablets to
industrial control systems. Random vibration testing is crucial for
ensuring that the internal components of these devices can
withstand the vibrations during transportation and normal use. Sine
burst testing can be used to identify any resonance issues in the
device's housing or internal components. For example, a laptop's
hard drive is tested with random vibrations to ensure that the data
stored on it remains secure even when the laptop is subjected to
vibrations.
6. Conclusion
The vibration shaker system for sine burst test, random and sine
vibration testing is an essential tool for product development and
quality assurance across multiple industries. By accurately
simulating different types of vibrations, it enables manufacturers
to evaluate and improve the performance and reliability of their
products. With its high - precision vibration control, wide dynamic
range, and robust construction, this system plays a crucial role in
ensuring that products meet the high - quality standards required
in today's competitive market. If your industry requires reliable
vibration testing to enhance the performance of your products,
investing in a high - quality vibration shaker system can be a
strategic decision. Consider reaching out to our team of experts to
explore how our vibration shaker systems can be tailored to your
specific testing needs.
Vibration Shaker System for Sine Burst Test, Random and Sine Vibration Testing
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