This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Design of Windshields with New PVB Interlayer for Enhanced Noise Reduction and Weight Savings
Technical Paper
2003-01-2858
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Several windshield constructions are designed and tested for the objectives of weight savings and improved vehicle wind noise. They include standard windshield constructions representing typical production windshields installed on most vehicles today, and acoustic windshield constructions of different glass thickness with weight saving and NVH improvement as the design objectives. The acoustic windshields contain an acoustically enhanced polyvinyl butyral (PVB) interlayer, Vanceva™ Quiet. The windshield constructions are tested for transmission of external airborne noise in laboratory and wind noise and road noise on high-speed test tracks. Laboratory study shows significant opportunities for both improved acoustics in 1500 Hz to 6000 Hz frequency region - a key range for wind noise and airborne noise transmission - and weight savings. Full scale NVH testing on high-speed tracks at 80 to 160 kmph shows that acoustic windshields made with the same production glass as the standard windshields reduce vehicle wind noise by as much as 6 dB. Testings with a thinner and lighter acoustic windshield reveal that the windshield improves vehicle wind noise by as much as 3-4 dB, at a 15% weight saving.
While thinner and lighter windshield has recently been the trend in automotive glazing for significant weight savings, it has also been the NVH limitation to designing quieter car interior. The present study indicates that the windshield can be designed and made quieter with the acoustically enhanced PVB interlayer.
Recommended Content
| Technical Paper | Glazing for Vehicle Interior Noise Reduction |
| Technical Paper | Enhanced Windshield CAE NVH Model for Interior Cabin Noise |
| Technical Paper | SEA Wind Noise Load Case for Ranking Vehicle Form Changes |
Authors
Citation
Lu, J., "Design of Windshields with New PVB Interlayer for Enhanced Noise Reduction and Weight Savings," SAE Technical Paper 2003-01-2858, 2003, https://doi.org/10.4271/2003-01-2858.Also In
References
- Callister J. R. et al. Aerodynamic and Acoustic Testing of Automobile Side Windows SAE NVH Conference 1996 paper No. 960902
- Lu J. Designing PVB Interlayer for Laminated Glass with Enhanced Sound Reduction International Noise Control Conference , Internoise 2002 Dearborn 2002 INCE paper No. IN02-581
- Lu J. Passenger Vehicle Interior Noise Reduction by Laminated Side Glass International Noise Control Conference , Internoise 2002 Dearborn 2002 INCE paper No. IN02-582
- Pyper J. L. Use of PVB in Laminated Side Glass for Passenger Vehicle Interior Noise Reduction International Body and Engineering Conference Detroit 2000 SAE paper No. 2000-01-2728
- Lu J. Pyper J. Weber R. Fisk J. Windshields with new Acoustical PVB Interlayer for Vehicle Interior Noise Reduction and Sound Quality Improvement SAE NVC 2003 SAE paper No. 2003-01-1587
- Khaleel M. A. et al. Effect of Glazing System Parameters on Glazing System Contribution to a Lightweight Vehicle's Torsional Stiffness and Weight International Body and Engineering Conference Detroit 2000 SAE paper No. 2000-01-2719
- Modeling Studies for Impact Resistance and Structural Rigidity of Lightweight Laminated Windshields International Glass Review 2001 2 78 81