Comparison of Electronic Component Durability Under Uniaxial and Multiaxial Random VibrationsSource: Journal of Electronic Packaging:;2015:;volume( 137 ):;issue: 001::page 11009Author:Ernst, Matthew
,
Habtour, Ed
,
Dasgupta, Abhijit
,
Pohland, Michael
,
Robeson, Mark
,
Paulus, Mark
DOI: 10.1115/1.4028516Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Multiaxial and uniaxial vibration experiments were conducted in order to study the differences in failure modes and fatigue life for the two types of excitation. An electrodynamic (ED) shaker capable of controlled vibration in six degrees of freedom (DOF) was employed for the experiments. The test specimen consisted of six large inductors insertion mounted on a printed wiring board (PWB). Average damage accumulation rate (DAR) in the inductor leads was measured for random excitations inplane, outofplane, and both directions simultaneously. Under simultaneous multiaxial excitation, the average DAR was found to be 2.2 times greater than the sum of the inplane and outofplane DARs. The conclusion was that multiplestep sequential uniaxial testing may significantly overestimate the durability of large/heavy structures with high center of mass in a multiaxial dynamic environment. Additionally, a test method utilizing uniaxial vibration along a direction other than the principal directions of the structure was examined. This method was found to have significant limitations, but showed better agreement with simultaneous multiaxial vibration experiments.
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contributor author | Ernst, Matthew | |
contributor author | Habtour, Ed | |
contributor author | Dasgupta, Abhijit | |
contributor author | Pohland, Michael | |
contributor author | Robeson, Mark | |
contributor author | Paulus, Mark | |
date accessioned | 2017-05-09T01:16:54Z | |
date available | 2017-05-09T01:16:54Z | |
date issued | 2015 | |
identifier issn | 1528-9044 | |
identifier other | ep_137_01_011009.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/157666 | |
description abstract | Multiaxial and uniaxial vibration experiments were conducted in order to study the differences in failure modes and fatigue life for the two types of excitation. An electrodynamic (ED) shaker capable of controlled vibration in six degrees of freedom (DOF) was employed for the experiments. The test specimen consisted of six large inductors insertion mounted on a printed wiring board (PWB). Average damage accumulation rate (DAR) in the inductor leads was measured for random excitations inplane, outofplane, and both directions simultaneously. Under simultaneous multiaxial excitation, the average DAR was found to be 2.2 times greater than the sum of the inplane and outofplane DARs. The conclusion was that multiplestep sequential uniaxial testing may significantly overestimate the durability of large/heavy structures with high center of mass in a multiaxial dynamic environment. Additionally, a test method utilizing uniaxial vibration along a direction other than the principal directions of the structure was examined. This method was found to have significant limitations, but showed better agreement with simultaneous multiaxial vibration experiments. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Comparison of Electronic Component Durability Under Uniaxial and Multiaxial Random Vibrations | |
type | Journal Paper | |
journal volume | 137 | |
journal issue | 1 | |
journal title | Journal of Electronic Packaging | |
identifier doi | 10.1115/1.4028516 | |
journal fristpage | 11009 | |
journal lastpage | 11009 | |
identifier eissn | 1043-7398 | |
tree | Journal of Electronic Packaging:;2015:;volume( 137 ):;issue: 001 | |
contenttype | Fulltext |