Analysis of powertrain noise and vibration using interferometry

Christopher T. Griffen; Slawomir T. Fryska; Paul R. Bernier

doi:10.1117/12.57463

1 December 1991 Analysis of powertrain noise and vibration using interferometry

Christopher T. Griffen, Slawomir T. Fryska, Paul R. Bernier

Proceedings Volume 1554, Second International Conference on Photomechanics and Speckle Metrology; (1991) https://doi.org/10.1117/12.57463
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

Competitiveness in the worldwide automotive market has increased significantly in the last ten years. Driven by technology proliferation of new designs coupled with increased product expectations, the engineering edge between manufacturers has become quite narrow. Noise and vibration has emerged as a primary criteria in assessing vehicle performance second only to manufacturing / process quality control. Design and development programs today have shifted prior vehicle focus toward powertrain noise and vibration characteristics. Vibration emanating from the powertrain generates structure borne noise and vibration in the body cavity via the body structure transmission paths as well as radiated noise from the powertrain surface. Control and elimination of complex vibration signatures demands sophisticated designs combined with advanced methods of testing for development and validation. Optical imaging by interferometric methods is an effective tool to achieve this when supplemented with conventional methods (i.e. modal analysis, sound intensity, signature analysis, finite and boundary element methods). Presented in this paper are continuous and pulsed interferometry project applications at the General Motors noise and vibration laboratory in Warren Michigan.

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Christopher T. Griffen, Slawomir T. Fryska, and Paul R. Bernier "Analysis of powertrain noise and vibration using interferometry", Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); https://doi.org/10.1117/12.57463

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KEYWORDS

Interferometry

Holographic interferometry

Mechanics

Acoustics

Modal analysis

Teeth

Nondestructive evaluation

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