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Leak Testing 101—Part 1

What every quality engineer needs to know

Jacques Hoffmann
Thu, 05/20/2010 - 06:00
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Not too long ago, when you wanted a product to be leak-proof, you simply put it under water, made sure it didn’t bubble, and thereby concluded there were no leaks. Such “bubble testing” takes time and depends on the operator’s ability, making it totally inappropriate for the modern production environment. Also, it doesn’t generate the quantitative measurements that are the lifeblood of quality assurance engineering.

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Dry-air leak testing methods—some of which can detect leaks as small as 0.01 standard cubic centimeters per minute (sccm)—are the methods most commonly used today by a wide range of industries—from medical devices, to automotive, to appliances, and aerospace, among others. These dry air methods enable quality managers to define leaks quantitatively. “No leaks allowed” standards are concepts of the past.

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Comments

Submitted by Alicia Lidtke on Fri, 05/21/2010 - 09:08

leak testing 101

In a furture article please discuss how to test for leaks on a FFS blister/backer card configuration.

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Submitted by Jacques Hoffmann on Sun, 05/23/2010 - 10:50

Additional Topics

Thak you for your request.
I will cover this topic and related "packaging" oriented subjects at a later date.

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Submitted by Pascal Lavoie on Tue, 05/25/2010 - 10:47

Dynamic/static and low/high pressure automated leak testing

Would it be possible to cover how to automatically count drops from units during hydraulic "proof" test with moving parts (i.e. one drop allowed per 25 cycles of an actuator)

Thanks!

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