Graphic: A Trenton Systems 2U rugged blade server in motion. MIL-STD-810 vibration testing may be worth looking into if your rugged computer is expected to experience general vibration or transport vibration during its life cycle.
Note: Trenton Systems is not a compliance testing facility. We manufacture rugged servers and workstations that conform to military and industrial standards, such as MIL-STD-810 and DO-160, and we can ensure that our systems comply with these standards using our in-house testing equipment, or by sending our systems to a third-party compliance testing laboratory for validation, but our facility does not offer compliance testing services for products manufactured outside of Trenton Systems. For a list of laboratories that can assist you with your testing needs, please read this blog post, which lists the best compliance testing laboratories in the world.
This is Part 2 in a series of the different test methods in MIL-STD-810H, the successor to MIL-STD-810G. View Part 1: Temperature Testing.
We know that rugged servers and workstations can experience quite a bit of vibration during transport and operation, and unfortunately, suffer damage or impairment as a result.
Test Method 514.8 of MIL-STD-810, which covers both general and transport vibration, can help with that.
According to MIL-STD-810H, the purpose of vibration testing, also known as Test Method 514.8, is to assess the functionality and durability of a system during and after its exposure to intense shaking and juddering.
The goal, of course, is for the system to pass tailored MIL-STD-810 vibration tests to ensure continued operation in the event of an exposure. Testing is typically performed using vibration testing equipment, such as a vibration exciter or vibration testing table.
Exposure to a harsh vibrational environment can severely damage or altogether destroy computers and their components unless they're ruggedized in accordance with MIL-STD-810.
Certifying your server or workstation to the testing procedures in Method 514.8 ensures protection in the field by assessing and validating the resistance of a system to varying levels of vibration.
This translates directly to dollars saved on repairs or replacements resulting from physical damage and a short life cycle.
MIL-STD-810H provides the following examples of problems that can result from general or transport vibration:
As you can see, there’s no shortage of damage that can occur when a system endures an exposure.
This is why it’s so important to equip your program or application with MIL-STD-810-certified rugged servers and workstations that are certified to the procedures in MIL-STD-810H-514.8.
There are four procedures in Method 514.8, each of which are unique to the eventual use and application of a particular system:
MIL-STD-810H also provides a vibration environment categories table to help test engineers determine which procedures to perform based on the product’s life cycle phase and application.
Screenshot: Vibration environment categories table courtesy of MIL-STD-810H
Judders and jouncing, oh my!
A cargo truck is delivering four 2U rugged servers to a military installation, where they’ll provide much-needed data insights and file storage to the many soldiers stationed there.
The truck is traversing through the desert across rocky, bumpy, rugged terrain. It’s a lot coarser than the driver expected, and unfortunately, he's unaware that the servers, along with the other cargo in the trailer, have become unsecured as a result.
Shaking violently in place, the servers are now enduring a constant torrent of vibrations, forceful enough to detach fasteners and components and even crack the chassis.
And when the truck driver travels over a particularly steep bump or a cavernous dip in the path, the servers either collide with the other cargo or crash against the side of the trailer.
The driver arrives at the installation and realizes what has happened.
He meets with one of the information technology specialists there and expresses his concerns.
“It was a pretty bumpy drive, and the servers, unbeknownst to me, became unsecured about 10 miles from here,” he says. “To be honest, sir, I wouldn’t be surprised if they’re severely damaged or completely toast.”
At the gesture of the IT specialist, the driver opens the door to the trailer, and there the servers lie.
The look on the IT specialist’s face says it all.
Gazing into the military cargo truck’s trailer, his eyes lit up.
“There’s nothing to worry about,” he told the worried driver. “We knew the computers would experience a bit of vibration during transport, so we prepared for that by having them MIL-STD-810-certified.”
“No kidding.”
“Yep, and from the looks of the other broken items in the trailer, I’d say it’s a good thing we did.”
Collage: A 1U Trenton Systems rugged server being tested on our in-house vibration testing table, used to test the vibrational resilience of our MIL-STD-810 servers and workstations
At Trenton Systems, we conduct our very own vibration testing using our in-house shock and vibration testing table, which allows us to certify your system to MIL-STD-810 vibration requirements.
Vibration testing services are typically requested directly by customers or listed as a requirement during the bidding process.
We can perform vibration and shock testing in-house at Trenton Systems up to certain limits and thresholds. Beyond that, we have testing labs we work with locally that can accommodate testing requirements beyond our capabilities. We can also provide customers with our shock and vibration test reports, which demonstrate just how resilient their customized rugged server or workstation is.
- Gary Ziadeh, compliance coordinator at Trenton Systems
Visit our Compliance Page to learn more about testing standards and how we ensure your program or application is equipped with a durable, reliable server or workstation that meets MIL-STD-810 and other testing requirements.
