公开(公告)号：US20160027427A1

公开(公告)日：2016-01-28

申请号：US14772968

申请日：2014-03-12

Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Zhiyu YANG ,  Ping SHENG ,  Guancong MA ,  Min YANG ,  Yong LI

IPC: G10K11/175

CPC classification number: G10K11/175 ,  G10K11/172

Abstract: A sound attenuation panel is configured with a substantially acoustically transparent planar, rigid frame divided into a plurality of individual, substantially two-dimensional cells. A sheet of a flexible material is fixed to the rigid frame, and a plurality of platelets fixed to the sheet of flexible material such that each individual cell of the plurality of cells is provided with a respective platelet to establish a resonant frequency, the resonant frequency defined by the planar geometry of the individual cells, the flexibility of the flexible material and the platelets. The cells are divided into at least two different types of the individual cells, configured so that sound waves emitted by a first type of said different types of individual cells establishes a sound cancellation pattern with sound waves emitted by a second type of said different individual cells or an aggregation of different types of the individual cells.

Abstract translation: 声衰减面板被构造成具有分为多个单独的基本二维单元的基本上声学透明的平面刚性框架。 柔性材料片被固定在刚性框架上，并且固定在柔性材料片上的多个血小板使得多个单元中的每个单元具有相应的血小板以建立谐振频率，谐振频率 由单个细胞的平面几何形状限定，柔性材料和血小板的柔性。 细胞被分成至少两种不同类型的单个细胞，其被配置为使得由第一类型的所述不同类型的单个细胞发射的声波建立具有由第二类型的所述不同个体细胞发射的声波的声音消除模式 或不同类型的单个细胞的聚集。

公开(公告)号：US20140116802A1

公开(公告)日：2014-05-01

申请号：US14065563

申请日：2013-10-29

Applicant: The Hong Kong University of Science and Technology

Inventor： Guancong MA ,  Min YANG ,  Ping SHENG ,  Zhiyu YANG

IPC: G10K11/00

CPC classification number: G10K11/18

Abstract: A device with simultaneous negative effective mass density and bulk modulus has at least one tubular section and front and back membranes sealing the tubular section. The front and back membranes sealing the tubular sections seal the tubular section sufficiently to establish a sealed or restricted enclosed fluid space defined by the tubular section and the membranes, and restrict escape or intake of fluid resulting from acoustic vibrations. A pair of platelets are mounted to the membranes, with the individual platelets substantially centered on respective ones of the front and back membranes.

Abstract translation: 具有同时负的有效质量密度和体积弹性模量的装置具有至少一个管状部分，并且前后膜密封管状部分。 密封管状部分的前部和后部膜片足以密封管状部分以建立由管状部分和膜限定的密封或限制的封闭流体空间，并且限制由声音振动引起的流体的逃逸或摄入。 一对血小板被安装到膜上，其中各个血小板基本上位于前膜和后膜中的相应的片上。

公开(公告)号：US20160168501A1

公开(公告)日：2016-06-16

申请号：US14590533

申请日：2015-01-06

Applicant: The Hong Kong University of Science and Technology

Inventor： Ping SHENG ,  Maijia LIAO ,  Weijia WEN ,  Ya Ying HONG

IPC: C10M135/10 ,  C10M133/20 ,  C10M141/08 ,  C10M125/18

CPC classification number: C10M135/10 ,  C10M125/18 ,  C10M133/20 ,  C10M141/08 ,  C10M171/001 ,  C10M2201/14 ,  C10M2203/1006 ,  C10M2207/289 ,  C10M2207/401 ,  C10M2209/104 ,  C10M2209/109 ,  C10M2215/04 ,  C10M2215/042 ,  C10M2215/102 ,  C10M2215/223 ,  C10M2219/042 ,  C10M2219/044 ,  C10M2229/025 ,  C10N2210/02 ,  C10N2230/02 ,  C10N2230/04 ,  C10N2230/60 ,  C10N2240/04 ,  C10N2240/08 ,  C10N2240/10

Abstract: GER fluids are improved by the addition of a polar molecule additive. By addition of a polar molecule additive, yield stresses under electric field are improved by over 50% while the current density is reduced to less than a quarter of the original GER. The reversible response time still remains the same, and the sedimentation stability is greatly enhanced. The zero field viscosity of the modified GER fluid remains the same as that of the original GER fluid without the additive. The improved GER characteristics improve general functionality as an electrical-mechanical interface, attendant with applications to car clutches, fluid brakes, and vehicle shock absorbers.

Abstract translation: 通过添加极性分子添加剂来改善GER流体。 通过添加极性分子添加剂，电场下的屈服应力提高超过50％，而电流密度降低到原始GER的四分之一。 可逆反应时间仍然相同，沉降稳定性大大提高。 改性GER流体的零场粘度与没有添加剂的原始GER流体相同。 改进的GER特性提高了作为机电接口的一般功能，伴随着应用于汽车离合器，流体制动器和车辆减震器。

公开(公告)号：US20210317896A1

公开(公告)日：2021-10-14

申请号：US17270218

申请日：2019-08-21

Applicant: The Hong Kong University of Science and Technology

Inventor： Ping SHENG ,  Zhen DONG

IPC: F16F15/14 ,  H02K7/02

Abstract: Rotational translation of an inertial mass rotor is used for providing damping of low frequency noise and vibration. An axial component is mounted so as to translate axial movement of an inertial linearly-displaceable member to rotational movement of an inertial mass rotor. The translation to rotational movement of the inertial mass rotor provides inertial amplification in the form of translational-rotational coupling. This enables the construction of a compact assembly, which allows light ultra-low frequency resonances to be concentrated, and which absorbs such low frequency noise energy.

公开(公告)号：US20160293154A1

公开(公告)日：2016-10-06

申请号：US15022456

申请日：2014-09-19

Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Zhiyu YANG ,  Ping SHENG ,  Min YANG ,  Suet To TANG ,  Guancong MA ,  Songwen XIAO

IPC: G10K11/172 ,  G10K11/178

CPC classification number: G10K11/172 ,  G10K11/178 ,  G10K2210/3212 ,  G10K2210/32271

Abstract: Sound attenuation is performed using a sound attenuation panel using an electromagnetic or electrostatic response unit to modify resonance. The sound attenuation panel has an acoustically transparent planar, rigid frame divided into a plurality of individual cells configured for attenuating sound. In one configuration, each cell has a weight fixed to the membrane. The planar geometry of each said individual cell, the flexibility of the membrane, and the weight establish a base resonant frequency for sound attenuation. The electromagnetic or electrostatic response unit is configured to modify the resonant frequency of the cell.

Abstract translation: 使用声音衰减面板使用电磁或静电响应单元来进行声音衰减，以改变共振。 声音衰减面板具有被分成被配置为衰减声音的多个单独单元的声学透明平面刚性框架。 在一个配置中，每个单元具有固定在膜上的重量。 每个所述单个电池的平面几何形状，膜的柔性和重量建立了用于声音衰减的基本共振频率。 电磁或静电响应单元被配置为修改电池的谐振频率。

公开(公告)号：US20160078857A1

公开(公告)日：2016-03-17

申请号：US14889151

申请日：2014-07-17

Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Ping SHENG ,  Zhiyu YANG ,  Guancong MA ,  Min YANG ,  Songwen XIAO

IPC: G10K11/172 ,  H02K35/00 ,  G10K11/02

CPC classification number: G10K11/172 ,  G10K11/02 ,  G10K11/162 ,  H02K35/00

Abstract: A sound absorbing metamaterial comprises an acoustic impedance-matched surface configured to minimize reflection from an incident acoustic wave. The surface is comprised of an elastic or flexible membrane and a substantially rigid mass mounted on the membrane. A relatively solid surface is provided as a reflective surface and is positioned behind the membrane. The reflective surface is separated by a predetermined distance from the elastic or flexible membrane and forms a fluid space between the membrane and the solid surface. The mass mounted on the membrane, in combination with the elastic membrane establish a plurality of eigenfrequencies.

Abstract translation: 吸音超材料包括被配置为使来自入射声波的反射最小化的声阻抗匹配表面。 表面由弹性或柔性膜和安装在膜上的基本上刚性的质量组成。 提供相对实心的表面作为反射表面并且位于膜后面。 反射表面与弹性或柔性膜隔开预定距离，并在膜和固体表面之间形成流体空间。 安装在膜上的质量与弹性膜结合形成多个本征频率。

公开(公告)号：US20170116976A1

公开(公告)日：2017-04-27

申请号：US15402470

申请日：2017-01-10

Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Zhiyu YANG ,  Ping SHENG ,  Min YANG ,  Liang SUN ,  Guancong MA

IPC: G10K11/172

CPC classification number: G10K11/172 ,  B32B3/085 ,  B32B27/08 ,  G10K11/162 ,  G10K11/165 ,  G10K11/168

Abstract: A sound absorption panel (201) is constructed on an acoustically thin sheet (203) to provide an acoustic/vibrational energy absorption metamaterial structure. A plurality of dampers (101) are fixed to the acoustically thin sheet (203), and at least a subset of said dampers (101) comprise a support (103) and a flexible membrane (105) supported by the support. The flexible membrane (105) has one or more masses or platelets (107) attached. The dampers (101) in combination with the sheet (203) result in absorption of energy of movement of the sheet (203) resulting from sound transmission or vibrations across the sheet.

公开(公告)号：US20160104472A1

公开(公告)日：2016-04-14

申请号：US14892213

申请日：2014-05-27

Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Ping SHENG ,  Zhiyu YANG ,  Min YANG ,  Liang SUN ,  Guancong MA ,  Songwen XIAO

IPC: G10K11/172 ,  B32B3/28 ,  B32B3/08 ,  G10K11/20 ,  G10K11/168

CPC classification number: G10K11/172 ,  B32B3/08 ,  B32B3/28 ,  B32B2255/10 ,  B32B2255/205 ,  B32B2307/102 ,  B32B2307/546 ,  B32B2419/00 ,  B32B2605/00 ,  B32B2607/00 ,  G10K11/168 ,  G10K11/20

Abstract: A substantially acoustically transparent planar, rigid frame divided into a plurality of individual, substantially two-dimensional cells is used to construct a sound absorption panel. A sheet of a flexible material is fixed to the rigid frame, and a plurality of platelets fixed to the sheet of flexible material such that each cell is provided with a respective platelet, thereby establishing a resonant frequency, establishing an increase in an absorption coefficient of the panel. The flexible material has a wrinkle or corrugation to permit distortion with reduced material elasticity. The wrinkle or corrugation permits the flexible material to distort beyond that afforded by a planar material of the same type, while retaining mechanical strength in supporting the plurality of platelets.

Abstract translation: 使用分为多个独立的，基本上为二维的单元的基本上声学透明的平面刚性框架来构造吸声板。 将柔性材料片固定到刚性框架上，并且将多个血小板固定到柔性材料片上，使得每个单元设置有相应的血小板，从而建立共振频率，从而建立吸收系数的增加 面板。 柔性材料具有皱纹或波纹，以允许变形，具有降低的材料弹性。 褶皱或波纹允许柔性材料变形超过相同类型的平面材料提供的柔性材料，同时保持支撑多个血小板的机械强度。

公开(公告)号：US20140060962A1

公开(公告)日：2014-03-06

申请号：US14075046

申请日：2013-11-08

Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Ping SHENG ,  Zhiyu YANG ,  Min YANG ,  Liang SUN ,  Guancong MA ,  Songwen XIAO

IPC: G10K11/16

CPC classification number: G10K11/16 ,  G10K11/172

Abstract: An acoustic/vibrational energy absorption metamaterial includes at least one enclosed planar frame with an elastic membrane attached having one or more rigid plates are attached. The rigid plates have asymmetric shapes, with a substantially straight edge at the attachment to said elastic membrane, so that the rigid plate establishes a cell having a predetermined mass. Vibrational motions of the structure contain a number of resonant modes with tunable resonant frequencies.

Abstract translation: 声学/振动能量吸收超材料包括至少一个具有连接有一个或多个刚性板的弹性膜的封闭平面框架。 刚性板具有不对称形状，在与所述弹性膜的连接处具有基本上直的边缘，使得刚性板建立具有预定质量的电池。 该结构的振动运动包含许多具有可调共振频率的谐振模式。

公开(公告)号：US20240185822A1

公开(公告)日：2024-06-06

申请号：US18287760

申请日：2022-04-21

Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Ping SHENG ,  Ho Yiu MAK ,  Xiaonan ZHANG ,  Zhen DONG

IPC: G10K11/162 ,  B32B15/02 ,  G10K11/172

CPC classification number: G10K11/162 ,  B32B15/02 ,  G10K11/172

Abstract: The ultra-low frequency acoustic absorber (10) includes a hollow housing (12) having opposed first and second open ends (22, 24), and a plurality of metallic mesh layers (16) stacked within the housing (12). In order to secure the plurality of metallic mesh layers (16) within the hollow housing (12), first and second mesh covers (18, 20) may cover the first and second open ends (22, 24) of the hollow housing (12), respectively. At least one spacer (14) may be provided to form a gap between the housing (12) and a support surface, such as a hard wall (W) or the like. The at least one spacer (14) may have a length sufficient to space the ultra-low frequency acoustic absorber (10) at the position of optimal absorption based on an acoustic soft 10 boundary condition (ASBC).