公开(公告)号：US09251778B2

公开(公告)日：2016-02-02

申请号：US14583204

申请日：2014-12-26

Applicant: Industrial Technology Research Institute

Inventor： Shang-Chih Wang ,  Shen Tsao ,  Yu-Tsung Chiu ,  Chun-Ti Chen ,  Yu-Yang Su ,  Mu-Hsi Sung

IPC: F02K1/38 ,  G10K11/00

CPC classification number: B32B3/26 ,  B32B3/06 ,  B32B7/005 ,  B32B15/043 ,  B32B15/18 ,  B32B15/20 ,  B32B2307/102 ,  C22C9/00 ,  C22C14/00 ,  C22C21/00 ,  C22C38/00 ,  G10K11/162 ,  Y10T428/12361

Abstract: A method of manufacturing a metal foil with microcracks includes placing a metal foil between a first material sheet and a second material sheet and then rolling them to form a plurality of microcracks in the metal foil. The microcracks are penetrating, and a sidewall of each of the microcracks is an irregular rough surface. Two ends of each of the microcracks are acute angles. A sound-absorbing structure includes at least one metal foil and a base plate kept at a distance from the metal foil, wherein at least one resonant cavity air layer is formed between the metal foil and the base plate by the distance, and the metal foil has microcracks.

Abstract translation: 制造具有微裂纹的金属箔的方法包括将金属箔放置在第一材料片和第二材料片之间，然后滚动它们以在金属箔中形成多个微裂纹。 微裂纹是穿透的，每个微裂纹的侧壁是不规则的粗糙表面。 每个微裂纹的两端是锐角。 吸声结构包括至少一个金属箔和保持与金属箔一定距离的基板，其中至少一个谐振腔空气层在金属箔和基板之间形成一定距离，金属箔 有微裂纹。