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Until recently, vertical vibration systems were commonly used for testing packages. But with stricter regulations now in place, there’s a need for more comprehensive testing that mimics various types of movements. As a result, modern machines are being modified to include simulations of pitch and roll movements in the transportation of packages. An example of this is Safe Load’s Pitch&Roll module. This module can be integrated with vertical vibration systems, enabling them not only to execute vertical movements but also to replicate the pitching and rolling experienced in cargo transport, similar to a multi-axis vibration test system.

What is multi-axis vibration testing?

Multi-axis vibration testing is a sophisticated method where a sample is vibrated along multiple axes. This involves shaking the sample in the X, Y, and Z directions using a linear shaker, and rotating it for each test phase.

This approach, which simulates real-world conditions more accurately, cuts down traditional testing time significantly. Unlike traditional single-axis tests that shake the sample in one direction at a time, multi-axis testing uses either real-world data or a randomized vibration pattern for a more comprehensive analysis.

As such, some examples of single-axis tests include:

  • Stress tests (static tests)
  • Vertical vibration tests (dynamic tests)
  • Suspension vibration tests in automotive. In this case, the test uses 4 vibrators, but all of them vibrate along the same axis: the vertical one.

Research shows that real-life vibrations involve movements in multiple directions. Multi-axis vibration testing, which shakes a sample in various directions, addresses this by more accurately simulating these conditions.

This method is more intricate due to its multi-directional approach and the complexity of its setup. As a result, it provides results that more closely mirror actual environmental conditions.

Types of multi-axis vibration testing

When applied to the transportation environment and the simulation of product + packaging systems, there are two types of multi-axis vibration testing:

Three-axis testing
In this case, three shakers are used to vibrate a sample along the X, Y and Z axes simultaneously, using random vibrations.

This is a more realistic multi-axis vibration testing than the vibrations in single-axis systems, and it is mainly used to test components and secondary systems.

Six Degrees of Freedom
The Six Degrees of Freedom or 6-DoF system  employs three axis to operate simultaneously to provide six degrees of freedom.

This allows for several configurations, more closely replicating motions in real settings.

What benefits does a company obtain by having a multi-axis vibration test system with vertical + pitch&roll?

During transport, goods experience many types of efforts that may affect their contents and their integrity. Some of the most common effects suffered by goods during transport are the following:

  • Loading and unloading of the goods.
  • Vehicle vibrations.
  • The accelerations and decelerations caused during road or railroad transportation.

Therefore, for the companies it is very important in order to be able to predict a load’s behavior during transport, thereby guaranteeing the arrival of the goods in perfect conditions, which is why for years now, the packaging has been subjected to various simulation tests that predict these kinds of problems.

Multi-axis vibration

The ISTA association is tasked with establishing the main testing protocols in that regard, and it expects to update its procedures soon to include pitch & roll motions into its transportation simulation standards. This is why companies should update their machinery in this regard, to be able to have systems that, in addition to performing the vertical vibration, also contemplate the pitch and roll of transportation methods.

How does  Pitch&Roll work?

The innWave, Safe Load’s pitch&roll module turns a vertical vibration system into a multi-axis vibration test system with vertical + pitch & roll. It is an independent servo-hydraulic vibration unit that performs pitch and roll simulation motions by coupling with a vertical vibration system, and has the following technical specifications:

  • P&R Rotation ± 5⁰.
  • P&R frequency range of up to 20Hz.
  • 1-G air dumpers for supporting static loads.
  • Three testing table sizes are available: 800×800, 1000×1000, and 1500×1500 mm.
  • Can reproduce the PSD recorder (innRecord).
  • Standard testing PSD.
  • Control software developed by Real Vibrations, standalone and user-friendly.

Thanks to its patented technology, the Vertical Vibration System + Pitch & Roll can simulate vertical vibrations and pitch and roll movements with high precision, produced by various handling and transport means.

What benefits does a company obtain by having a multi-axis vibration test system with vertical + pitch&roll?

  • It is cheaper than acquiring a complete vertical + pitch&roll system.
  • Does not require an extra base or seismic mass.
  • Has a fully independent module controller.
  • Has an independent HPU.
  • Its design can be customized to fit any machine.
  • Offers a simulation that is much closer to reality
  • Can reproduce the PSD recorder

At Safe Load Testing, we offer a variety of vibration testing solutions tailored to your needs. You can choose from our vertical vibration machine, the machine that combines vertical vibration with pitch and roll module, or simply add the pitch and roll module to your existing vibration equipment.

Each of these options will provide you with reliable and accurate results. With this data, you can thoroughly analyze the vibrations that your package undergoes during the distribution process. This information is crucial for optimizing your load, ensuring that your products arrive in perfect condition at their destination. At Safe Load Testing, we are committed to providing you with the best tools to ensure the integrity and efficiency of your supply chain.

Furthermore, if you’re still curious about this method, our comprehensive ebook can clear up any doubts and offer numerous insights to enhance your packaging process. It’s a great resource for understanding the intricacies of vibration testing and how it can be applied to improve your packaging strategies.

Ready to enhance your testing capabilities? Contact us today to discuss your specific needs and find the perfect solution for your business.


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