Invention Grant
US09251778B2 Metal foil with microcracks, method of manufacturing the same, and sound-absorbing structure having the same
有权
具有微裂纹的金属箔，其制造方法和具有该金属箔的吸音结构
- Patent Title: Metal foil with microcracks, method of manufacturing the same, and sound-absorbing structure having the same
- Patent Title (中): 具有微裂纹的金属箔，其制造方法和具有该金属箔的吸音结构
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Application No.: US14583204Application Date: 2014-12-26
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Publication No.: US09251778B2Publication Date: 2016-02-02
- Inventor: Shang-Chih Wang , Shen Tsao , Yu-Tsung Chiu , Chun-Ti Chen , Yu-Yang Su , Mu-Hsi Sung
- Applicant: Industrial Technology Research Institute
- Applicant Address: TW Hsinchu
- Assignee: Industrial Technology Research Institute
- Current Assignee: Industrial Technology Research Institute
- Current Assignee Address: TW Hsinchu
- Agency: Jianq Chyun IP Office
- Priority: TW103119773A 20140606; TW103143503A 20141212
- Main IPC: F02K1/38
- IPC: F02K1/38 ; G10K11/00
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.
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