Isolating shipboard electronic equipment
An
Equipment Reliability Institute product story
Edited by the Engineeringtalk editorial team
May 29, 2008
Training course will acquaint inexperienced electrical and mechanical engineers with shipboard vibration and shock environments.
A new three-day course on "Isolating shipboard electronic equipment" will be held for the first time at Shock Tech in Tallman, New York, from 23rd to 25th September 2008.
The course is intended to acquaint inexperienced electrical and mechanical engineers with the shipboard (particularly various US Navy ships) vibration and shock environments, which can be harmful to installed electronic and other vital and necessary instruments and equipments.
Only rarely can such equipment be rigidly attached to the ship.
Soft attachments, often called "mounts" or "isolators" are needed.
They are the focus of this short course, which provides proven details of: how to select isolators; shock and vibration analysis methods; equipment fragility, and applications to MIL-S-901G and MIL-STD-167 tests; a description of the tests; a review of shock and vibration conditions; and test data from decks with natural frequencies at 8, 14, 25Hz etc.
Successfully meeting the tests and qualifying equipment the first time through is a principal objective of this course.
The Navy's MIL-STD-901D barge test is especially severe.
COTS equipment often cannot meet the shock conditions unless protected in properly designed enclosures.
Isolation of equipment and how the isolation mounts and enclosure are selected and designed are extremely important.
Selecting the wrong isolator can be worse than hard mounting.
Shock and vibration tests are very expensive.
Failure may require extensive modifications to equipment and then retest in order to validate design and equipment.
Delays to the program are inevitable, costs increase rapidly and schedules can be badly affected.
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