Jun
1
Those items fail to meet requirements all the time, yet the REASONS those items fail are limited to just six causes: a) Wrong application – not for this material, not for this temperature, not for this atmosphere b) Out of date – date codes – these things have limited shelf life. c) Bad mix – [...]
Dec
27
A Question About Humidity
December 27, 2010 | Leave a Comment
Hello Blog readers – I recently received an e-mail asking me a question about Humidity testing, and I thought the question and the response might be relevant to you. Any comments would be appreciated. Hi Steve, I attended your MIL-STD-810G course in the spring. I have a question on humidity testing. I have an analysis [...]
Sep
29
Don’t Jump Into Condensing Humidity Testing
September 29, 2010 | Leave a Comment
Most commercial and consumer products are tested and verified in non-condensing humidity environments, which verifies the ability to withstand operating in ambient atmosphere with a high moisture content. Military and Aerospace products however, are often required to operate in a climatic testing environment where moisture will condense in liquid form directly on the product. This [...]
Feb
25
In the Twilight Zone of Humidity Testing
February 25, 2010 | 2 Comments
After 25 years in the reliability field I am still a bit mystified by the humidity testing. Generally the environmental tests can be divided into two major categories: Durability tests, where some form of wear-out mechanism causes products to fail. The most common examples of durability tests are vibration and thermal cycling. The second group [...]
Feb
11
Welcome to the Climatics Testing Blog
February 11, 2009 | 2 Comments
What kind of test is a climatics test? Well the most common would be temperature testing, but a more complete list would look like this: High Temperature Low Temperature Temperature Shock Humidity – Condensing and non-condensing Altitude Temperature/Altitude Rapid Decompression/Explosive Decomp Combined Environments Solar Radiation – actinic and thermal effects Salt Fog Sand & Dust [...]
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