公开(公告)号：US20240344909A1

公开(公告)日：2024-10-17

申请号：US18412648

申请日：2024-01-15

Applicant: IIDA Co., Ltd.

Inventor： Shigeo MIYAKE ,  Shuichi NOWATARI ,  Hidemi HANADA

IPC: G01L1/24 ,  G01N21/3581

CPC classification number: G01L1/248 ,  G01N21/3581 ,  G01N2201/061

Abstract: An objective of the present invention is to quantitatively estimate the residual stress of an object. The present invention provides a method for estimating the residual stress of an object, the method comprising: irradiating an object with terahertz waves; measuring polarization intensity of the terahertz waves transmitted through or reflected by the object; and calculating tensile stress of the object based on the measured polarization intensity. In one embodiment, calculating the tensile stress includes calculating the tensile stress based on a relationship between polarization intensity and tensile stress derived from: a relationship between polarization intensity and tensile distance; and a relationship between tensile distance and tensile stress.

公开(公告)号：US12013225B2

公开(公告)日：2024-06-18

申请号：US17639957

申请日：2020-09-02

Applicant: IFP Energies nouvelles

Inventor： Didier Frot ,  Martin Gainville

IPC: G01B11/16 ,  G01L1/24

CPC classification number: G01B11/161 ,  G01L1/248

Abstract: The present invention is a method for measuring the deformation of a subsea pipeline (1), wherein an electromagnetic wave is emitted towards subsea pipeline (1), the electromagnetic wave being reflected by a metal layer (2) of subsea pipeline (1) and the reflected electromagnetic wave being analysed to deduce the deformation of subsea pipeline (1).

公开(公告)号：US20230314682A1

公开(公告)日：2023-10-05

申请号：US17706654

申请日：2022-03-29

Applicant: Intel Corporation

Inventor： Jacob CHESNA ,  Liang ZHANG ,  Jianyong MO ,  Fan FAN

IPC: G02B5/30 ,  G02B5/20 ,  G02B5/26 ,  G01L1/24

CPC classification number: G02B5/3066 ,  G02B5/305 ,  G02B5/208 ,  G02B5/26 ,  G01L1/248

Abstract: An apparatus includes a light source configured to emit light to a translucent material and an embedded feature disposed in the translucent material, a first linear polarizer configured to linearly polarize the emitted light, based on a first orientation of an optical axis of the first linear polarizer, and a second linear polarizer configured to filter the light that is reflected from the translucent material, from the light that is reflected from the embedded feature and the translucent material, based on a second orientation of an optical axis of the second linear polarizer. The apparatus further includes a sensor configured to receive the light reflected from the embedded feature, from which the light reflected from the translucent material is filtered, and capture an image of the embedded feature and the translucent material, based on the received light.

公开(公告)号：US20190187047A1

公开(公告)日：2019-06-20

申请号：US16221191

申请日：2018-12-14

Applicant: Aditi Chattopadhyay ,  Bonsung Koo ,  Lenore Dai ,  Ryan Gunckel ,  Jack Miller

Inventor： Aditi Chattopadhyay ,  Bonsung Koo ,  Lenore Dai ,  Ryan Gunckel ,  Jack Miller

IPC: G01N21/35 ,  G01L1/24 ,  G01N31/22

CPC classification number: G01N21/35 ,  G01L1/248 ,  G01N31/22 ,  G01N2021/3595

Abstract: Methods and systems are provided for detecting mechanophore damage in a composite material where the mechanophores are embedded in a matrix of the composite material. A mechanical load is applied to the composite material. A damage precursor signal is generated as a result of the mechanical load and is detected before yield of the mechanophore embedded composite material. Detecting the damage precursor signal may include illuminating the mechanophore embedded composite material with UV light to excite the embedded mechanophores, capturing fluorescent emissions of the embedded mechanophores with a UV camera, and filtering light received at the UV camera based on an emission wavelength of the mechanophores. Alternatively, the damage precursor signal may be detected using spectra from an evanescent wave distorted by the mechanophore embedded composite material using an attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) system.

公开(公告)号：US20170297206A1

公开(公告)日：2017-10-19

申请号：US15487463

申请日：2017-04-14

Applicant: The Regents of the University of Colorado, a body corporate

Inventor： Nikolaus Correll

IPC: B25J13/08 ,  G01L5/22 ,  G01L1/24 ,  G01S17/08

CPC classification number: B25J13/085 ,  B25J13/086 ,  B25J15/08 ,  G01L1/248 ,  G01L5/228 ,  G01S7/4813 ,  G01S17/08 ,  G01S17/87 ,  G01S17/88

Abstract: A force, distance and contact measurement system comprising at least one low-cost tactile sensor embedded in elastomer and retrofitted onto existing robotic grippers is provided. The sensor is simple to manufacture and easy to integrate with existing hardware. The sensor can be arranged in strips and arrays, facilitating manipulation tasks in uncertain environments. The elastomer protects the sensor, provides a rugged and low-friction surface, and allows performing force measurements.

公开(公告)号：US20010025917A1

公开(公告)日：2001-10-04

申请号：US09802802

申请日：2001-03-09

Inventor： Haruhiko H. Asada ,  Stephen Mascaro

IPC: G01L005/22

CPC classification number: G06F3/011 ,  G01L1/248 ,  G01L5/22 ,  G01L5/226 ,  G06F3/033 ,  G06F2203/0331

Abstract: A device for detecting the posture a finger or forces applied to a finger, the finger having a fingernail illuminated by light, comprises at least one photodetector for measuring a change in light reflected by an area of the finger beneath the fingernail in response to the posture of the finger or forces applied to the finger. The photodetector provides a signal corresponding to the change in light reflected. The device also includes a processor for receiving the signal and determining whether the change corresponds to a specified condition. The photodetector may be enclosed in a housing and coupled to the fingernail.

Abstract translation: 用于检测手指或手指施加的力的装置，所述手指具有由光照亮的指甲，所述手指包括至少一个光电检测器，用于响应于所述姿势来测量由指甲下方的手指区域反射的光的变化 的手指或力施加到手指。 光检测器提供对应于反射光的变化的信号。 该设备还包括一个处理器，用于接收信号并确定该变化是否对应于指定的条件。 光电检测器可以封闭在壳体中并且联接到指甲。

公开(公告)号：US5918283A

公开(公告)日：1999-06-29

申请号：US910051

申请日：1997-08-12

Applicant: Eann Alexander Patterson ,  Sandro Barone

Inventor： Eann Alexander Patterson ,  Sandro Barone

IPC: G01B11/16 ,  G01J5/00 ,  G01L1/24 ,  G01N3/06

CPC classification number: G01B11/18 ,  G01J5/0003 ,  G01L1/248 ,  G01N2203/0652

Abstract: A first aspect of the invention relates to an epoxy resin coating used in reflection photoelasticity, which is "black" in the infra-red part of the spectrum; another aspect to the use of an epoxy resin as a coating on at least one surface of a body to be subjected to cyclic loading and examined by thermoelasticity, and another aspect to a method of making thermoelastic measurements of a body when subjected to cyclic loading and hence measurements of stresses or strains, comprising, as an initial step, coating the surface(s) of the body to be measured with an epoxy resin whereby the surface(s) so coated represents a black body.

Abstract translation: 本发明的第一方面涉及在反射光弹性中使用的环氧树脂涂层，其在红外部分是“黑色”; 使用环氧树脂作为主体的至少一个表面上的涂层进行循环加载并通过热弹性进行检查的另一方面，以及当进行循环加载时对身体进行热弹性测量的方法的另一方面，以及 因此，应力或应变的测量包括作为初始步骤，用环氧树脂涂覆待测物体的表面，由此所涂覆的表面代表黑体。

公开(公告)号：US5591924A

公开(公告)日：1997-01-07

申请号：US52377

申请日：1993-04-23

Applicant: John A. Hilton

Inventor： John A. Hilton

IPC: G01L1/24 ,  G01L5/16 ,  G01L5/22 ,  G06F3/038 ,  G06F3/041 ,  G01L3/00

CPC classification number: G01L1/248 ,  G01L5/161 ,  G01L5/166 ,  G01L5/223 ,  G06F3/03543 ,  G06F3/038 ,  H01H2239/052 ,  Y10T74/20201

Abstract: A force and torque converter is provided which provides an electronic representation of a planarly applied force and a torque applied about an axis that is orthogonal to the plane. The converter includes a base, an actuating member which is relatively displaced in response to the applied torque and force, resilient mechanisms to provide a restoring force and torque to the actuating member, and sensing mechanisms to sense the applied torque and force and generate an electronic representation thereof. The electronic representation is characterized by a sensitivity curve in which relatively small applied forces and torques result in a relatively low scale factor and where for a range of small applied forces and torques the relation of scale factor with respect to applied torque and force has a relatively low derivative. Further, for a range of larger applied forces and torques, the sensitivity curve has a relatively large scale factor and a relatively large derivative. In one embodiment, the sensitivity curve is implemented by a processing mechanism which includes a microprocessor and firmware.

Abstract translation: 提供了力和液力变矩器，其提供平面施加的力的电子表示和围绕与该平面正交的轴施加的扭矩。 转换器包括基座，响应于所施加的扭矩和力而相对移位的致动构件，用于向致动构件提供恢复力和扭矩的弹性机构，以及感测施加的扭矩和力并产生电子的感测机构 表示。 电子表示的特征在于灵敏度曲线，其中相对小的施加力和扭矩导致相对低的比例因子，并且对于小的施加力和扭矩的范围，比例因子与施加的扭矩和力的关系具有相对的 低衍生。 此外，对于较大的施加力和扭矩的范围，灵敏度曲线具有相对较大的比例因子和相对较大的导数。 在一个实施例中，灵敏度曲线由包括微处理器和固件的处理机构实现。

公开(公告)号：US5349870A

公开(公告)日：1994-09-27

申请号：US835941

申请日：1992-02-21

Applicant: Martin J. Webber ,  Gordon R. Hopkinson

Inventor： Martin J. Webber ,  Gordon R. Hopkinson

IPC: G01L1/00 ,  G01L1/24 ,  G01L1/25 ,  G01N3/00

CPC classification number: G01L1/248

Abstract: Apparatus for measuring stress at a point on an object comprising: means for applying a cyclically varying load of period T to the object; detector means for collecting and measuring thermal radiation from said point over a sample time interval t, wherein t

Abstract translation: PCT No.PCT / GB90 / 00988 Sec。 一九九二年二月二十一日 102（e）日期1992年2月21日PCT提交1990年6月26日PCT公布。 公开号WO91 / 00504 日本1991年1月10日。用于测量物体上的点处的应力的装置，包括：用于将周期性变化的周期T的载荷施加到所述物体的装置; 检测器装置，用于在采样时间间隔t内收集和测量来自所述点的热辐射，其中t

公开(公告)号：US4798477A

公开(公告)日：1989-01-17

申请号：US865726

申请日：1986-06-24

Applicant: David S. Mountain

Inventor： David S. Mountain

IPC: G01L1/00 ,  G01L1/24 ,  G01N21/17 ,  G01N25/00

CPC classification number: G01L1/248

Abstract: Apparatus and a method for indicating static stress including residual stress in an object utilize the stress dependence of the specific heat of an object by scanning the surface of the object with a pulsed laser light source and measuring the resulting temperature changes by means of an infra red detector to provide stress information. A common scanning system including a beam splitter enables the pulsed light output to the object and the received infra red radiation to be scanned simultaneously. The optical paths of the light and infra red through the scanning system are made different so that the infra red sensor does not respond to any hot spot in the scanning system. A further laser source provides three spaced beams which are transmitted through the beam splitter so as to impinge on the surface of the object at points surrounding the instantaneous point of inspection. Reflected light from these beams is processed to give instantaneous angle of incidence information necessary to correct the infra red measurements when scanning complex objects.

Abstract translation: PCT No.PCT / GB85 / 00403 Sec。 371日期1986年6月24日第 102（e）1986年6月24日PCT 1985年9月9日PCT PCT。 公开号WO86 / 01893 日期：1986年3月27日。用于指示静态应力（包括物体中的残余应力）的方法通过用脉冲激光光源扫描物体的表面并且测量所得到的温度来利用物体的比热的应力依赖性 通过红外探测器改变以提供压力信息。 包括分束器的常见扫描系统使得能够同时扫描对物体的脉冲光输出和接收的红外辐射。 通过扫描系统的光和红外线的光路被制成不同，使得红外传感器不对扫描系统中的任何热点作出反应。 另一激光源提供三个间隔开的光束，透射通过光束分离器，以便在瞬时检测点附近的点处撞击物体的表面。 对来自这些光束的反射光进行处理，以便在扫描复杂物体时给出校正红外测量所需的瞬时入射信息。