What is a Vibration Resonance?

A vibration resonance occurs when equipment or a product is exposed to an external forced vibration occurring at one or more of its natural frequencies.  The resulting product response vibration is amplified and can be huge!  Vibration resonances can cause severe damage to products and significantly shorten their life.  Examples of vibration resonances can be seen below and in our video page.

A natural frequency is the frequency at which a system will oscillate after an external force is applied and then removed.  All objects have a natural frequency at which they vibrate.  Most products have many natural frequencies.

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Sinusoidal Vibration Basics

F22 Raptor Plane - Sinusoidal Vibration BasicsThe brilliant scholars at CalPolyTech have diligently evaluated and assessed the Fundamentals of Vibration Measurement and Analysis in a way that even lay persons can get a grip on the fundamentality of measuring vibrations for differing purposes and projects.  This reference for comprehending the physics behind the elemental vibration measurement and analysis will prove invaluable to the product managerial departments, industrial engineers, developers, and all with decision making power in the testing or product development field.

See Sinusoidal and Random Vibration Testing Primer for a more technical explanation of sinusoidal vibration testing.

See Sinusoidal Vibration Testing to learn more about the different types of sinusoidal vibration testing.

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DES Adds New Unholtz-Dickie Vibration Test System

Vibration Testing Bed

Our new Unholtz-Dickie vibration and shock testing platform.

To keep up with increasing vibration and shock testing demand, DES added a brand new Unholtz-Dickie Electro Dynamic (ED) Shaker Test System. The shaker is a model SAI30F-S452/ST system with slip table to perform vibration and shock testing along 3 axes. This gives DES additional vibration and shock testing capability and also will help us turn your projects around faster. Continue Reading DES Adds New Unholtz-Dickie Vibration Test System

Vibration Testing: A Questionnaire for Clients

Figure 3.  Vibration Testing using a Cube Fixture

Vibration testing can be a complicated process. We have created this questionnaire to help make communication between the vibration test lab and customer more efficient. The questionnaire allows us to capture all the pertinent facts about your test requirements. Providing the information below will help us provide an accurate quotation and to perform a successful vibration test. We can help you with answering the questions if needed. Many engineers, not familiar with vibration and shock testing, a subject not taught by universities, may wish to further their education.  May we respectfully suggest that you visit http://equipment-reliability.com/training-calendar/vibration-and-shock-testing/  for vibration and shock training courses. Continue Reading Vibration Testing: A Questionnaire for Clients

Sinusoidal Vibration Testing

Sinusoidal or Sine Vibration Testing is one of the more common types of vibration testing services performed by vibration test labs. See Sinusoidal Vibration Basics to learn more about vibration fundamentals. A primer containing a more technical explanation on sinusoidal vibration testing can be found in our blog article Sinusoidal and Random Vibration Testing Primer. The types of Sinusoidal Vibration Testing are Sine Sweep Vibration Testing, Sine Dwell Vibration Testing, and Sine-on-Random Vibration Testing.

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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.
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