MIL-STD-810 Vibration Compliance Testing
As a MIL-STD-810 certified lab, we realize the importance of military standard vibration testing. Meeting the MIL-810 vibration test method requirements can be difficult. We understand the challenges and guide companies through the process.
When products do not meet the requirements, we assist with finding solutions. We have a reputation of helping customers achieve their MIL-STD product certifications. Keystone takes a consultative approach throughout the entire test program. Our pricing is competitive and we offer volume discounts.
Request a quote to learn why we are one of the fastest-growing compliance test labs in the country. Have a question about vibration regulatory compliance testing? Contact us or call (724) 657-9940 and we will determine the best course of action.
Summary of MIL-810 Vibration Testing
Vibration testing is essential to determining the ability of a product to withstand the conditions it might experience during its lifetime. The testing simulates the conditions that occur in operations and transit and stretches across many industries. This testing assists in finding potential issues before they arise.
Without shaker testing, car seats would squeak with every change in the road surface. Airplanes would require significant repair after every flight. Consumer electronics would have shorter lifespans. Vibration testing is essential to maximizing the use and life of nearly every product.
Overview of Vibration Types:
There are two primary types of vibration testing. Random vibrations are vibrations that involve multiple frequencies at once. Sine vibrations are conducted one frequency at a time. From those two basic types, there are several specific tests including the following:
Random Vibration Testing – A random vibration test provides all frequencies simultaneously. This is considered to simulate real-world movement and is the more realistic of the two primary types of vibrations. Random vibration tests can simulate vibration caused by different events such as operation, transportation, and seismic.
Products can have multiple resonant frequencies. Random testing applies multiple frequencies at the same time. This process can expedite the analysis of the product providing valuable product life information in a short period. This saves significant time and money by reducing the need for repairs, maintenance, and recalls.
Sine Vibration Testing – This test sweeps across a frequency spectrum. This determines and identifies any test article resonant frequencies. Sine sweeps are also called sinusoidal sweeps. Sine sweeps can identify the frequencies that generate the largest responses.
During product validation, a sine test can be used to maintain the shaker on the product’s resonance frequency. This is referred to as a Sine Dwell Vibration Test. This will essentially fatigue the product and either expedite a failure or show proof of the product’s ability to survive.
As a regulatory compliance test lab, we use sine sweeps to validate our shakers and fixtures. Shakers can develop issues such as cracked armatures and loose connections. Fixtures can have resonance frequencies as well. A fixture should never have a resonance in the frequency range of the test plan.
In addition to just Random and Sine, there are also combination vibration profiles that can be used. These are called Mixed-Mode Vibration Tests.
One example of a mixed-mode test is Sine on Random Vibration Testing. These tests provide further insight into the ability of a product to survive. The testing combines the underlying energy of a random vibration test with the resonance dwells of the sine test. The sine component of these mixed-mode tests can either be sweeping or fixed for the device under test.
An excellent example of a mixed-mode event is a helicopter. The helicopter incurs random vibration during flight. Add a missile launch or gunfire to it and an intense sinusoidal vibration is introduced. This combination of vibration events can impact the operations of the aircraft and its components.
Mixed-mode testing such as sinusoidal on random is not required for all products. Specific testing requirements are often determined by a product’s industry.
We have significant vibration test equipment including five shaker tables. Our electrodynamic shakers allow us to accommodate short lead times on scheduling. Our shakers range in size and capability.
Our vibration controllers and vibration test systems offer many capabilities. These include tracked resonance dwell and automated response limiting to any profile. We also provide classical and SRS shock testing.
Industries Requiring Vibration Testing
Aerospace Vibration Testing
In aerospace, the launch environment can be nearly two minutes of extreme vibration, pressure, and acceleration. The load placed on systems and components can reach close to 20 g’s. Reentry, landing, and recovery can be treacherous as well. Testing a product’s ability to withstand these events is mandatory to the success of the component and possibly the mission.
In aerospace testing, RTCA-DO-160 is one of the most common test standards used. For military aerospace testing, the most common test standards are MIL-STD 202 and MIL-STD 810. There are also several commercial aerospace test standards as well.
Automotive Vibration Testing
Automobiles do not typically experience the same extreme terrain as military vehicles, but some roads are pretty bad. Road vibrations are best simulated through the use of random vibration profiles. These profiles simulate normal road conditions, potholes, ramps, speed bumps, and braking. Even the closing of a door, hood, or trunk creates a vibration.
One of the challenges of automobile testing is noise. No one wants to hear a rattle in their car, so the industry developed squeak and rattle vibration testing. This shaker testing identifies components that require adjustments to maintain low decibels and our sanity while operating the vehicle. Of all of the components in a car, the seats undergo some of the most intense squeak and rattle testing.
Aviation Vibration Testing
Similar to aerospace, aviation products must be able to survive extremely harsh environments. The takeoff and landing of a plane generate vibration throughout the aircraft. Turbulence can also cause vibrations.
It is crucial that systems not be impacted by vibrations. Unwanted wing movements and other shock pulses can be catastrophic. Even a momentary loss of controls, communication, or navigation can be devastating.
Consumer Products Vibration Testing
The every-day events or home and office life can create vibration stress on products. For many units, to achieve product certification like a CE Mark, vibration testing must be completed.
Every consumer product is subject to vibration during transportation to your home or office. As a certified package testing lab, we can provide all of the package testing needed to certify products and their packaging. We are an ISTA-certified test lab and Amazon test facility. We also provide ASTM testing.
Military Vibration Testing
Vibrations can be equally detrimental in the air, on the water, and the ground. As previously covered, the operations of these units create vibrations throughout the units. There are also mechanical vibrations prevalent during operations. Add in additional events such as gunfire, missile launches, torpedo launches, and the presence of intense sine resonances can appear.
There are several military vibration standards with the most common being MIL-STD-810. Part One of this standard calls for testing at a vibration frequency of 25 HZ and above. This standard also covers the impacts of multiple events that can occur at the same time. These include temperature, humidity, and altitude in combination with vibration.
Expert Vibration Regulatory Compliance Testing
Selecting the right shock and vibration testing facility to work with is important. Keystone Compliance is a unique vibration test lab because of our focus on the customer experience. From quote to report, our process is exactly what our customers need.
Vibration testing is just one of the dynamics test services we offer. In addition to this, we also offer EMC testing and product safety testing. Contact us to receive short lead times on schedules, thorough reports, and unprecedented guidance. We offer the best vibration testing lab experience in the industry.
For more detailed information on specific vibration testing standards, please follow the links below:
- ANSI C136.31 Vibration of Roadway & Lighting
- ASTM D999 Vibration Testing of Shipping Containers
- ASTM D5112 Horizontal Linear Motion Vibration Testing
- ASTM D5416 Abrasion Resistance by Vibration Testing
- ASTM D999-08: Vibration Testing of Shipping Containers
- ASTM D5416: Abrasion Resistance by Vibration Testing
- EN 61373 Vibration of Railway Equipment
- IEC 60068-2-64 Vibration Testing
- ISO 13355 Vertical Random Vibration Testing