All shook up; testing for shock and vibration. (includes related article)

Shock and vibration occur during the shipping of a product and during its use once it is in the possession of the customer. If the qualification tests do not anticipate all of the possible shock and vibration conditions, the resulting failures can be expensive and embarrassing to the manufacturer, a...

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Bibliographic Details
Published in:Mechanical engineering (New York, N.Y. 1919) N.Y. 1919), 1989-09, Vol.111 (9), p.68-68
Main Author: Merchant, Carol
Format: Magazinearticle
Language:English
Subjects:
Acceptance sampling
Engineering
Engineering design
Product design
Product development
Product testing
Quality control
Shock (Mechanics)
Testing
Tests
Vibration
Vibration (Physics)
Online Access:Get full text
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Summary:Shock and vibration occur during the shipping of a product and during its use once it is in the possession of the customer. If the qualification tests do not anticipate all of the possible shock and vibration conditions, the resulting failures can be expensive and embarrassing to the manufacturer, according to Art Drury, a test engineer at AT&T Bell Laboratories. There are 2 basic types of vibration tests: 1. sinusoidal tests, which vibrate the product at a single frequency that can be varied, and 2. random tests, which use multiple, randomly combined frequencies. A typical vibration test facility is a closed-loop system that includes a shaker, accelerometer, charge amplifier, controller, and power amplifier. While vibration testing seeks to simulate the effects of the environment on the product's design, environmental stress screening seeks to induce failures primarily caused by production flaws, ideally without aging the product.
ISSN:0025-6501
1943-5649