Controlling Panel Noise and Vibration Using Non-Contacting Test Methodologies 931339
Non-contacting test methodology studies of automotive body components have become a very useful, high resolution and sensitive test technique to engineering personnel. Continuous wave laser holometry, computer aided holometry (CAH), pulsed laser holometry and a scanning laser system were used to image vibration patterns. These methods were selected because of improved data turn-around time in the test development process while having no mass-loading effects on the sheet metal panels.
An analysis of the vehicle body structure was conducted to improve the interior body structure sound quality and to reduce road noise presence. An interrogation of the interior noise spectrum identified critical frequencies affecting vehicle NVH. This paper addresses the results of using the aforementioned non-contacting test methods to reduce panel responses by developing an optimum rib section and pattern, and the addition of adhered stiffening materials.
Citation: Snyder, D. and Marchi, M., "Controlling Panel Noise and Vibration Using Non-Contacting Test Methodologies," SAE Technical Paper 931339, 1993, https://doi.org/10.4271/931339. Download Citation
Author(s):
David S. Snyder, Mitchell M. Marchi
Affiliated:
Ford Motor Co.
Pages: 6
Event:
Noise & Vibration Conference & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Proceedings of the 1993 Noise and Vibration Conference-P-264
Related Topics:
Sound quality
Interior noise
Body structures
Test procedures
Vibration
Noise
Lasers
Noise, vibration, and harshness standards and regulations
Personnel
Imaging and visualization
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »
