Development and Experimental Characterization of Metallic Spring Isolators for Electronic Packages of Air Borne Vehicles

Forfattere

  • P. Anil Kumar Department of Mechanical Engineering, SDAT Division, Directorate of ENTEST, Research Centre Imarat, Defence Research Development Organization, Hyderabad, Telangana, India
  • P. Bangaru Babu Department of Mechanical Engineering, National Institute of Technology, Warangal, Telangana, India

Nøgleord:

Electronic packaging, finite element analysis-PCB, spring isolator, spring spacers, rigid spacer

Resumé

During flight, electronic packages in air borne vehicles will experience aerodynamic induced loads like random vibration and shock. PCBs mounted in these packages either malfunction or fail due to high vibration which is due to the stacked mounting of PCBs. Desired gap between any two adjacent PCBs will be maintained with the help of rigid spacers in this mounting. It is understood that the solution for reducing this high vibration response is to relax the rigidity imposed by rigid spacers by some means without affecting the overall mounting stiffness. This requirement demands for one to one replacement of rigid spacer with vibration isolator. Commercial rubber isolators are not fit for electronic packages as shelf life of rubber is not on par with anticipated storage time of air borne vehicles. Keeping this constraint into consideration, it is being proposed in this research project to develop and experimentally evaluate metallic spring isolator. Challenging part of this task is achieving isolation both in random vibration and shock with intended metallic spring isolator against a common problem of general isolator. This paper brings out the details of this particular invention along with experimental characterization followed by isolation effectiveness.Cite this ArticleAnil Kumar P, Bangaru Babu P.Development and ExperimentalCharacterization of Metallic SpringIsolators for Electronic Packages of AirBorne Vehicles. Journal ofExperimental & Applied Mechanics. 2016; 7(2): 9–18p 

Forfatterbiografi

  • P. Anil Kumar, Department of Mechanical Engineering, SDAT Division, Directorate of ENTEST, Research Centre Imarat, Defence Research Development Organization, Hyderabad, Telangana, India
    Scientist 'E', Head-SDAT & COCOA, Environmental Testing (ENTEST), Research Centre Imarat (RCI)- Defence Research Development Organisation (DRDO)

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Publiceret

2016-06-27

Nummer

Årg. 7 Nr. 2 (2016)

Sektion

Research Articles

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