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1. 发明授权

US09791014B1 Enhanced damping materials using negative stiffness inserts 有权
公开(公告)号：US09791014B1
公开(公告)日：2017-10-17
申请号：US13837957
申请日：2013-03-15
申请人： HRL Laboratories, LLC
发明人： Geoffrey P. McKnight , Chia-Ming Chang , Andrew C. Keefe , William Carter
IPC分类号： F16F3/02 , F16F7/00
CPC分类号： F16F7/00 , F16F3/026 , F16F2228/063
摘要： In one embodiment, a vibration control apparatus is provided having a pair of face sheets with a core material in between. The core material comprising a positive stiffness material. A stack comprising a positive stiffness structure in series with a negative stiffness structure is located between the pair of face sheets, in parallel with the core material. The stack may be embedded in the core material. Various embodiments may include multiple stacks in parallel with each other. In some embodiments, the stack may include multiple positive stiffness structures in series with multiple negative stiffness structures. The multiple positive stiffness structures and negative stiffness structures may be interleaved.

2. 发明授权

US09618396B1 Thermomagnetic resonator-based temperature sensing 有权
公开(公告)号：US09618396B1
公开(公告)日：2017-04-11
申请号：US14176020
申请日：2014-02-07
申请人： HRL Laboratories, LLC
发明人： Hyok J Song , Chia-Ming Chang
IPC分类号： G01K11/00 , G01K7/00 , G01K7/36
CPC分类号： G01K7/36 , G01K13/08
摘要： A thermomagnetic temperature sensor, a temperature measurement system and a method of measuring temperature employ a temperature-dependent resonant frequency of a thermomagnetic resonator to measure temperature. The thermomagnetic temperature sensor includes a thermomagnetic inductor and a capacitor connector to form the thermomagnetic resonator. The thermomagnetic inductor includes a ferromagnetic material having a temperature-dependent magnetic permeability to determine the temperature-dependent resonant frequency. A predetermined relationship between the temperature-dependent resonant frequency and temperature in a range between a maximum magnetic permeability value and a Curie temperature provides the measurement of temperature.

3. 发明申请

US20130087407A1 High Bandwidth Antiresonant Membrane 有权
标题翻译：高带宽反谐振膜
公开(公告)号：US20130087407A1
公开(公告)日：2013-04-11
申请号：US13645250
申请日：2012-10-04
申请人： HRL Laboratories LLC
发明人： Geoffrey P. McKnight , Chia-Ming Chang
IPC分类号： G10K11/16
CPC分类号： G10K11/172
摘要： A membrane is disclosed. The membrane contains a first weight disposed at a center portion of the membrane, and a first hinge structure disposed away from the center portion of the membrane.
摘要翻译：公开了一种膜。膜包含设置在膜的中心部分的第一重量，以及远离膜的中心部分设置的第一铰链结构。

4. 发明授权

US11371823B1 Magnetoelastic strain sensor and radio-frequency identification tag including the same 有权
公开(公告)号：US11371823B1
公开(公告)日：2022-06-28
申请号：US16829859
申请日：2020-03-25
申请人： HRL LABORATORIES, LLC
发明人： Chia-Ming Chang , Hyok J. Song , David Shahan , Geoffrey McKnight
IPC分类号： G01L1/12 , G01B7/24
摘要： A wireless radio-frequency identification (RFID) strain sensor including: a substrate; an antenna on the substrate; and an integrated circuit on the substrate and electrically connected to the antenna. At least one of the substrate and the antenna includes a magnetoelastic material.

5. 发明授权

US11024278B1 Acoustic absorber 有权
公开(公告)号：US11024278B1
公开(公告)日：2021-06-01
申请号：US15177637
申请日：2016-06-09
申请人： HRL LABORATORIES LLC
发明人： Adour V. Kabakian , Chia-Ming Chang , John J. Ottusch , John L. Visher , Geoffrey P. McKnight
IPC分类号： G10K11/168
摘要： An acoustic absorber is disclosed. The acoustic absorber contains a plurality of adjacent passages defined by walls configured to generate alternating high and low pressure zones as an acoustic energy travels though the acoustic absorber.

6. 发明授权

US09719863B1 Thermomagnetic temperature sensing 有权
公开(公告)号：US09719863B1
公开(公告)日：2017-08-01
申请号：US14194724
申请日：2014-03-01
申请人： HRL Laboratories, LLC
发明人： Chia-Ming Chang , John Wang , Geoffrey P McKnight , Ping Liu
IPC分类号： G01K7/36 , G01R31/36
CPC分类号： G01K7/38 , G01K13/08
摘要： A thermomagnetic sensor, measurement system and a method of measuring temperature employ a thermomagnetic probe to measure temperature of a device using a thermomagnetic effect. The thermomagnetic sensor includes a plurality of coils configured to provide a mutual inductance measurement between a selected pair of coils of the plurality and the thermomagnetic probe between the selected pair. The thermomagnetic probe includes a ferromagnetic material having a temperature-dependent magnetic permeability determined from the mutual inductance measurement. A predetermined relationship between the temperature-dependent magnetic permeability and temperature in a range between a maximum magnetic permeability value and a Curie temperature provides a measurement of a temperature local to the thermomagnetic probe.

7. 发明授权

US09222229B1 Tunable sandwich-structured acoustic barriers 有权
标题翻译：可调三明治结构声屏障
公开(公告)号：US09222229B1
公开(公告)日：2015-12-29
申请号：US14298858
申请日：2014-06-06
申请人： HRL Laboratories, LLC
发明人： Chia-Ming Chang , Geoffrey P. McKnight , William Carter , Alan J. Jacobsen , Tobias A. Schaedler , Adour V. Kabakian
IPC分类号： E04B1/82 , E01F8/00
CPC分类号： G10K11/172 , G10K11/168
摘要： In one embodiment, provided is a sound attenuating barrier having a core structure between face sheets with a mass attached to at least one face sheet, and having a spatially varied stiffness distribution and/or a spatially varied density. The sound attenuating barrier may include at least one face sheet and/or core having a spatially varied stiffness distribution and/or a spatially varied mass distribution. In one embodiment, a sound attenuating barrier is provided having a core structure between face sheets with a mass structure attached to at least one face sheet, with the core/and or face sheet(s) being constructed to design an effective vibration length as well as enable a variable local stiffness and mass across the sound attenuating barrier such that the sandwich structure provides variable resonance frequency responses and broadband coverage.
摘要翻译：在一个实施例中，提供了一种声衰减屏障，其具有在具有附接到至少一个面板的质量的面板之间的芯结构，并且具有空间变化的刚度分布和/或空间变化的密度。声音衰减屏障可以包括具有空间变化的刚度分布和/或空间上变化的质量分布的至少一个面片和/或芯。在一个实施例中，提供了一种声衰减屏障，其具有在具有连接到至少一个面板的质量结构的面板之间的芯结构，其中芯片和/或面板被构造成设计有效的振动长度使得能够在声音衰减屏障之间实现可变的局部刚度和质量，使得夹层结构提供可变谐振频率响应和宽带覆盖。

8. 发明授权

US11021870B1 Sound blocking enclosures with antiresonant membranes 有权
公开(公告)号：US11021870B1
公开(公告)日：2021-06-01
申请号：US14213465
申请日：2014-03-14
申请人： HRL LABORATORIES LLC
发明人： Geoffrey P. McKnight , Chia-Ming Chang
IPC分类号： G10K11/172 , E04B1/84
摘要： An enclosure is disclosed. The enclosure contains a plurality of walls coupled together and configured to al least partially cover one or more components, wherein at least one of the walls comprises a first plurality of antiresonant membranes configured to at least partially block acoustic emission from the one or more components.

9. 发明授权

US09004226B1 Actively tunable lightweight acoustic barrier materials 有权
标题翻译：主动调谐轻便隔音材料
公开(公告)号：US09004226B1
公开(公告)日：2015-04-14
申请号：US14084604
申请日：2013-11-19
申请人： HRL Laboratories, LLC
发明人： Geoffrey P. McKnight , Christopher P. Henry , Chia-Ming Chang , Andrew C. Keefe
IPC分类号： E04B1/86 , G10K11/16
CPC分类号： G10K11/16 , B60R13/08 , G10K11/04 , G10K11/172
摘要： In one embodiment, provided is an actively tunable acoustic attenuator having a frame, a membrane within the frame, and a mass secured to the membrane. In another embodiment, provided is an actively tunable acoustic attenuator having a frame, a membrane within the frame, and a mass secured to the membrane. The membrane is coupled, either indirectly or directly, to the frame via a variable stiffness coupler. In another embodiment, provided is an actively tunable acoustic attenuator having a frame and a plurality of membrane layers within the frame. An active material is between at least two of the plurality of membrane layers. A mass is secured to at least one of the plurality of membrane layers.
摘要翻译：在一个实施例中，提供了一种主动可调谐的声衰减器，其具有框架，框架内的膜和固定到膜的质量。在另一个实施例中，提供了一种主动可调谐的声衰减器，其具有框架，框架内的膜和固定到膜的质量。膜通过可变刚度耦合器间接或直接耦合到框架。在另一实施例中，提供了一种主动可调谐的声衰减器，其具有框架和框架内的多个膜层。活性材料在多个膜层中的至少两个之间。质量被固定到多个膜层中的至少一个膜层。

10. 发明授权

US08752667B2 High bandwidth antiresonant membrane 有权
标题翻译：高带宽反谐振膜
公开(公告)号：US08752667B2
公开(公告)日：2014-06-17
申请号：US13645250
申请日：2012-10-04
申请人： HRL Laboratories LLC
发明人： Geoffrey P. McKnight , Chia-Ming Chang
IPC分类号： E04B1/343
CPC分类号： G10K11/172
摘要： A membrane is disclosed. The membrane contains a first weight disposed at a center portion of the membrane, and a first hinge structure disposed away from the center portion of the membrane.
摘要翻译：公开了一种膜。膜包含设置在膜的中心部分的第一重量，以及远离膜的中心部分设置的第一铰链结构。

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