-
公开(公告)号：US20140339014A1
公开(公告)日：2014-11-20
申请号：US14281408
申请日：2014-05-19
Applicant: Purdue Research Foundation
Inventor： Satya Surya Srinivas Varanasi , Somesh Khandelwal , Thomas Siegmund , John Stuart Bolton , Raymond J. Cipra
IPC: E04B1/84
CPC classification number: E04B1/86 , E04B2001/748 , G10K11/168
Abstract: A cellular material barrier system for reducing sound transmission. The cellular material system includes a planar cellular metamaterial arrangement which includes at least one unit cell, the unit cell includes a sound normalizing arrangement, and a planar metamaterial arrangement coupled to the sound normalizing arrangement on a first side, the planar metamaterial arrangement includes a plate, and a frame affixed to the plate, the sound normalizing arrangement configured to normalize incident sound received at non-normal angle to thereby convey sound at normal angles to the planar metamaterial arrangement, the unit cell further comprising a back layer that is coupled to the sound normalizing arrangement on a second side, opposite the first side, the back layer is made from a porous material, including at least one of a fibrous layer, polymeric foams, ceramic foams, and metallic foams.
Abstract translation: 用于减少声音传播的蜂窝材料屏障系统。 蜂窝材料系统包括平面细胞超材料装置，其包括至少一个单元，单元包括声归一化装置和耦合到第一侧上的声归一化装置的平面超材料布置，所述平面超材料装置包括板 以及固定到所述板的框架，所述声音归一化装置被配置成对以非正常角度接收的入射声进行归一化，从而以与所述平面超材料装置平行的角度传达声音，所述单元还包括耦合到 第二侧的第一侧的声音归一化装置，后层由多孔材料制成，包括纤维层，聚合物泡沫，陶瓷泡沫和金属泡沫中的至少一种。
-
公开(公告)号：US09163398B2
公开(公告)日：2015-10-20
申请号：US14281408
申请日：2014-05-19
Applicant: Purdue Research Foundation
Inventor： Satya Surya Srinivas Varanasi , Somesh Khandelwal , Thomas Siegmund , John Stuart Bolton , Raymond J. Cipra
IPC: G10K11/172 , E04B1/86 , G10K11/168 , E04B1/74
CPC classification number: E04B1/86 , E04B2001/748 , G10K11/168
Abstract: A cellular material barrier system for reducing sound transmission. The cellular material system includes a planar cellular metamaterial arrangement which includes at least one unit cell, the unit cell includes a sound normalizing arrangement, and a planar metamaterial arrangement coupled to the sound normalizing arrangement on a first side, the planar metamaterial arrangement includes a plate, and a frame affixed to the plate, the sound normalizing arrangement configured to normalize incident sound received at non-normal angle to thereby convey sound at normal angles to the planar metamaterial arrangement, the unit cell further comprising a back layer that is coupled to the sound normalizing arrangement on a second side, opposite the first side, the back layer is made from a porous material, including at least one of a fibrous layer, polymeric foams, ceramic foams, and metallic foams.
Abstract translation: 用于减少声音传播的蜂窝材料屏障系统。 蜂窝材料系统包括平面细胞超材料装置，其包括至少一个单元，单元包括声归一化装置和耦合到第一侧上的声归一化装置的平面超材料布置，所述平面超材料装置包括板 以及固定到所述板的框架，所述声音归一化装置被配置成对以非正常角度接收的入射声进行归一化，从而以与所述平面超材料装置平行的角度传送声音，所述单元还包括耦合到所述平面超材料布置的背层 第二侧的第一侧的声音归一化装置，后层由多孔材料制成，包括纤维层，聚合物泡沫，陶瓷泡沫和金属泡沫中的至少一种。
-
公开(公告)号：US20150143913A1
公开(公告)日：2015-05-28
申请号：US13747005
申请日：2013-01-22
Applicant: Purdue Research Foundation
Inventor： Douglas Edward Adams , John Stuart Bolton , Edward J. Delp, III
CPC classification number: G01N33/227 , G01H1/00 , G01H9/00 , G06K9/00771 , G06K2209/09
Abstract: Apparatuses and methods for detecting hidden or modified objects in a vehicle are disclosed. Embodiments include detection of vehicle irregularities, such as irregularities in the acoustical response of a vehicle tire as the tire rolls over a surface, irregularities in the orientation of the vehicle body, the response of a vehicle component (such as an axle, wheel, tire, etc.) to the vehicle moving over a surface, and the response of a vehicle component to vehicle generated vibrations. In alternate embodiments subsystems detecting different irregularities communicate with one another.
Abstract translation: 公开了用于检测车辆中的隐藏或修改的物体的装置和方法。 实施例包括车轮不规则的检测，例如当轮胎在表面上滚动时车辆轮胎的声响应的不规则性，车体的取向不均匀，车辆部件（例如车轴，车轮，轮胎 等）到车辆在表面上移动，以及车辆部件对车辆产生的振动的响应。 在替代实施例中，检测不同不规则性的子系统彼此通信。
-
-
Search Results
3
records
(took 0.014 seconds)
