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Browse Prior Art Database

STRAIN GAGES IMBEDDED IN PC BOARD

IP.com Disclosure Number: IPCOM000007600D
Original Publication Date: 1996-May-01
Included in the Prior Art Database: 2002-Apr-09
Document File: 2 page(s) / 82K

Publishing Venue

Motorola

Related People

Authors:
Larry Marvet David Reiff Robert Darveaux Chong Kok Huat

Abstract

Electronic circuit board strain due to bending determination. Strain gages are comprised of thin in manufacturing and handling contributes directly copper foil tracing a serpentine path along a pri- to surface mount solder joint failure and the result- mary axis as shown in Figure 1. They work on the ant reduction in quality. Strain gages are an impor- principal of increasing resistance ofthe copper traces tant measurement tool for printed circuit board deflec- as they are stretched or strained. The resistance tion and surface mount component reliability change is measured and calibrated in units ofstrain.