Recent Testing Projects

We had many interesting test projects at Delserro Engineering Solutions this past month:

  • We completed a Pyroshock test on our Mechanical Impact Pyroshock Simulator (MIPS) on equipment that will fly into outer space.
  • On the other end of the altitude spectrum, we completed environmental testing of components that will be used in submarines to MIL-E-917.  MIL-E-917 is a military specification for Naval shipboard electric power equipment.
  • In the middle of the altitude range, we performed combined temperature and vibration testing on sensors that will be used in automobile engines to specification GMW 3172.  GMW 3172 is a General Motors Specification for electronic component durability.

The following is a sample of some additional testing projects we have completed recently:

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.

Continue reading Sinusoidal and Random Vibration Testing Primer

An Informational Guide to HALT and HASS

Product reliability is essential to success in today’s competitive global market.  HALT and HASS are intensive methods used to expose and then improve design and process weaknesses.  HALT and HASS are faster, less expensive and more accurate than traditional testing techniques.  HALT and HASS are proven processes used to lower product development and manufacturing costs, compress time to market, reduce warranty costs, improve customer satisfaction, gain market share and increase profits. Some companies have reported savings in the millions after using HALT and HASS.

HALT and HASS can accelerate a product’s aging process from actual months into test minutes much faster than traditional testing!

Continue reading An Informational Guide to HALT and HASS

Lead Free Solder Reliability Issues and Test Methods

This article discusses the reliability challenges of switching over to lead-free solder and the test methods used to demonstrate reliability, written by Gary Delserro and published in Evaluation Engineering Magazine.  Click on the link to download the article in PDF, Lead Free Solder Reliability Issues & Test Methods.

Environmentally friendly is a term rapidly invading the electronics industry.

The electronic industry will be facing great challenges over the next few years as the solder used in electronic products is migrating toward lead-free.  This is being driven by mandates in Europe such as Waste Electrical and Electronic Equipment (WEEE) and Restrictions of Hazardous Substances (RoHS) and similar ones in Japan.  There also is a great deal of pressure in the US to do the same.

Continue reading Lead Free Solder Reliability Issues and Test Methods

Exposing Hard to Find Defects

This article discusses an abbreviated technique that uses the tools of HALT to expose hard-to-find defects in products returned by customers, written by Gary Delserro and published in Evaluation Engineering Magazine.  Click on the link to view the article in PDF, Exposing Hard to Find Defects.

How many times have your customers returned products or circuit boards with reported defects that you can’t find?  Every manufacturer experiences this situation at some time.  Your customer reports a problem in your product and sends it back to you.  You test the faulty product in your lab and the problem doesn’t occur. Sometimes you try to bend it or tap it against the table.  You may even try heating it in a chamber or with a heat gun or using a freeze spray.  Still the problem does not expose itself.

Continue reading Exposing Hard to Find Defects

Welcome to our new Website!

Welcome to DES’s new Website and Blog!  This blog will feature news and technical discussions about reliability testing, environmental testing and DES’s services.  We look forward to you visiting our Website and participating in the Blog.  As the blog develops interest, we hope to have good discussions about our testing services.  Feel free to comment in our blog space.