@article {Sorenson:2025:0736-2935:18, title = "Metamaterial application to reduce noise transmission through glass", journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings", parent_itemid = "infobike://ince/incecp", publishercode ="ince", year = "2025", volume = "271", number = "2", publication date ="2025-07-25T00:00:00", pages = "18-29", itemtype = "ARTICLE", issn = "0736-2935", url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/2025/00000271/00000002/art00003", doi = "doi:10.3397/NC_2025_0008", author = "Sorenson, Steve and Li, Xiaopeng", abstract = "There are a number of ways to reduce noise transmission through automotive glass. These methods are reviewed, and noise reduction results of a method involving a metamaterial attached to the glass edge will be discussed in the most detail. This metamaterial is developed using topology optimization to provide a broadband beam or panel flexural wave absorber which is effective at a wide range of incidence angles. Transmission loss measurements comparing laminated glass, tempered glass and tempered glass plus metamaterial show the acoustic TL performanceat -20C, +20C and +40C of 0.3 m x 0.3 m flat panels. Further work will include TL evaluation of metamaterial-treated glass in a fully trimmed automotive door assembly and on-road measurements to capture the noise reduction performance for both acoustic and turbulent sources.", }