Random vibration amplitude third-class highway bump test bench equipment

As a manufacturer, we specialize in providing high-performance random vibration testing equipment.

1、 Core concept analysis: Random vibration and amplitude

To understand your needs, we first need to clarify two key concepts:

1. random vibration：

• What is itUnlike the "sinusoidal vibration" with fixed frequency and amplitude, random vibration is a type of vibrationVibration with uncertain instantaneous values following probability and statistical lawsIts frequency and amplitude are constantly changing, making it impossible to predict the next second's motion state.

• Why is it importantThe actual road transportation environment is formed by the random superposition of countless vibrations of different frequencies and amplitudes. Therefore,Random vibration can most accurately simulate the actual comprehensive stress experienced by products inside truck compartmentsInternational standards such as ISTA 3A and ASTM D4169 generally recommend using random vibration for transportation testing.

2. amplitude：

• In random vibration, a single 'amplitude' value loses its meaning. We usepower spectral densityDefine it.

• GRMS valueThis is a statistical significanceEffective acceleration value, representing random vibrationsOverall intensity or severity levelThe higher the GRMS value, the greater the vibration energy and the more rigorous the test.

A test equipment that can simulate the overall vibration intensity (GRMS) and impact characteristics of third-class highway through random vibration mode.

2、 How can the device achieve accurate random vibration simulation?

Our equipment completes tasks through a complete system:

1. High performance hardware platform：

• High thrust servo motorProvide precise and stable power output, able to quickly respond to control signals and reproduce complex random waveforms.

• High rigidity platform and guide railEnsure that the device itself does not resonate or deform under strong random excitation forces, ensuring accurate transmission of vibration energy to the sample.

• Large displacement cylinder barrel: third-class highway is full of large pits, and the equipment is required to haveLarge displacement (such as ± 50mm or more)Output capability to reproduce large fluctuations and impacts.

2. Core control system and software：

• Random vibration control softwareThis is the brain of the device. It is built-in with a summary based on a large amount of measured dataRandom vibration spectrum of third-class highway(PSD curve as shown in the diagram below). You can also customize the vibration spectrum.

• Real time monitoring and closed-loop controlThe system monitors the vibration of the table in real time through an acceleration sensor, compares it with the set target spectrum, and adjusts the output instantly to ensureThe actual vibration spectrum always closely follows the target spectrumEnsure the accuracy of the testing.

• data managementAutomatically record all test data and generate a professional report with time-domain waveforms and spectral comparison graphs.

IIIRandom vibration amplitude third-class highway bump test bench equipmentFeatures and Advantages

• High authenticity of testingThe results have good correlation with actual transportation and can detect faults that cannot be excited by sinusoidal vibration.

• High testing efficiencyEquivalent simulation of cumulative damage effects during long-distance transportation within a relatively short testing time.

• Good repeatabilityThe laboratory conditions can be precisely controlled, and the test results are reliable and reproducible.

• Complies with international standards: SatisfiedISTA 3A、ASTM D4169、GB/T 4857.23Waiting for standard requirements.

4、 Typical application process

1. Select vibration spectrum: Select the standard random vibration spectrum of "third-class highway" from the software library, or import the user-defined spectrum.

2. Set testing timeAccording to standard requirements or equivalent calculations, set the testing duration (such as ISTA 3A, which usually recommends 180 minutes).

3. Install sampleFix the packaging on the countertop.

4. execute testsStart the device, and the system will automatically run and control.

5. Result AnalysisAfter testing, inspect the packaging and product, and analyze the report generated by the software.

Random vibration amplitude third-class highway bump test bench equipmentNext cooperation suggestion

To provide you with the most suitableScheme and quotation for random vibration test benchPlease provide the following information:

1. test sample: Type, maximum size (length)wideHigh), maximum weight.

2. Test StandardInternational/national/corporate standards that must be followed (such as ISTA 3A, ASTM D4169, GB/T 4857.23, etc.).

3. Performance expectationsWhat you hope to achievemaximum displacement(such as ≥ 50mm) andmaximum accelerationWhat is (such as ≥ 10g)?

4. budget rangeFacilitate us to recommend cost-effective configurations for you.

What we provide is a set ofTesting system, it can provide you withaccurateThe test data is used to improve the reliability of product transportationTools. Please feel free to contact us anytime for detailed technical solutions and quotations