How Do Extreme Shock Environments Impact Aerospace Components?
Discover how extreme shock environments affect aerospace components and why thorough shock testing is crucial for mission success. Learn how Delserro Engineering Solutions (DES) uses advanced testing techniques and state-of-the-art facilities to ensure aerospace components perform reliably in the harshest conditions. Contact DES for tailored solutions to protect your aerospace projects.
IEC 60068 Vibration Testing
Learn about IEC 60068 and IEC 60068-2-6 compliant vibration testing for product reliability and durability. Contact DES today.
ISTA Series 1 Package Testing Standards
Gain insights on ISTA 1 Package Testing Standards, designed to evaluate product and packaging integrity.
ISTA Series 1 Package Testing Standards
Gain insights on ISTA 1 Package Testing Standards, designed to evaluate product and packaging integrity.
Shock Testing: Long Duration Half Sine Shock
Shock testing with long durations can be a challenging endeavor. DES recently had to perform a 35G peak, half sine shock with a 50 millisecond duration. The video below shows this shock test being performed. This sounds like an easy shock to carry out because a peak of 35G is low compared to many shocks. However, this is a difficult shock to perform because 50 milliseconds is a long duration. Most typical shock durations are less than 20 milliseconds. A half sine shock impulse has the shape of a half sine wave. More details can be found elsewhere on our…
Temperature Cycling Testing: Coffin-Manson Equation
Temperature cycling testing is another method of accelerated life testing for products that are exposed to temperature variations during use in normal operation. The temperature variations can be a result of self heating for products that are repeatedly turned on and off, or can be the result of cyclic environmental changes — such as temperature variations from day to night — or other causes. These repeated temperature changes can result in thermal fatigue and lead to eventual failure after many thermal cycles. Accelerated life testing can be performed by cycling the product to high and low temperatures that exceed its normal use temperatures….
What is Pyroshock Testing?
First we should answer, what is a pyroshock or a pyrotechnic shock? Both pyroshocks and pyrotechnic shocks are the same thing. A pyroshock occurs when explosive events are used to separate the stages of rockets or missiles, or from a ballistic impact to a structure by a projectile. When a pyroshock occurs, a stress or shock wave propagates through the structure and into the electronic equipment contained within the structure. Pyroshocks are unique shocks that have high G-level, high frequency content with very little velocity and displacement change during the shock. The frequency range of a pyroshock is usually 100…
How a HALT Test Shows The Future
Highly Accelerated Life Testing Procedures Speeding up the process of device or circuit failure requires extreme inputs, those that are unlikely to occur during real-world use by customers regardless of the environment. Three common testing inputs are high and low temperatures, rapid cycling of the same and vibration along six-axes. In some cases, a highly accelerated life test (HALT) will incorporate combined temperature and vibration stresses. These inputs can result in component failure in the span of days, hours, or even minutes compared to months or years of typical usage. Benefits of HALT Testing While the percentages of failure…
Random Vibration Testing
Random Vibration Testing is one of the more common types of vibration testing services performed by vibration test labs. A primer containing a technical explanation on random vibration testing can be found in our blog article Sinusoidal and Random Vibration Testing Primer. Real world vibrations are usually of the random type. Vibrations from automobiles, aircraft, rockets are all random. A random vibration test can be correlated to a service life if the field vibrations are known. Since random vibration contains all frequencies simultaneously, all product resonances will be excited together which could be worse than exciting them individually as in…
Sinusoidal and Random Vibration Testing Primer
The most common types of vibration testing services conducted by vibration test labs are Sinusoidal and Random. This primer is an explanation of the typical requirements found in vibration test specifications and the parameters used to control the vibration tests. Both types of vibration tests are used to evaluate products for ruggedness, durability and to expose vibration defects. See Sinusoidal Vibration Basics to learn more about vibration fundamentals. See Sinusoidal Vibration Testing to learn more about the different types of sinusoidal vibration testing. Examples of vibration test videos can be found on our YouTube page.