公开(公告)号：US20240053301A1

公开(公告)日：2024-02-15

申请号：US18254466

申请日：2021-11-09

Applicant: EVATEC AG

Inventor： Peter HORN ,  Edmund SCHÜNGEL ,  Adrian HERDE

IPC: G01N29/12 ,  G01N29/34 ,  H01J37/32 ,  C23C16/50 ,  C23C16/455

CPC classification number: G01N29/12 ,  G01N29/348 ,  G01N29/346 ,  H01J37/3244 ,  H01J37/32935 ,  C23C16/50 ,  C23C16/45536 ,  C23C16/45544 ,  G01N2291/0237 ,  H01J2237/332 ,  H01J2237/3323 ,  H01J2237/24578

Abstract: A measuring device for measuring parameters of a piezoelectric crystal onto which a thin film of material is deposited (under vacuum). The crystal includes two spaced-apart electrodes. A frequency generator is adapted to generate an oscillator signal at a specified output frequency. A measuring amplifier is adapted to apply the oscillator signal as a drive signal to one of the electrodes of the crystal and to provide a crystal output signal in response to the drive signal. A quadrature demodulator is adapted to down convert the crystal output signal and to provide an in-phase output signal and a quadrature output signal. A computation unit is adapted to determine one or more parameters of the crystal based on the in-phase output signal and the quadrature output signal. Furthermore, there is provided a corresponding measuring method as well as to thin-film deposition systems (including a vacuum chamber) with such a device and methods for controlling such systems.

公开(公告)号：US11879869B2

公开(公告)日：2024-01-23

申请号：US18352263

申请日：2023-07-14

Applicant: ZHEJIANG UNIVERSITY OF TECHNOLOGY

Inventor： Cong Ding ,  Shiqing Feng ,  Zhongyu Piao ,  Zhipeng Yuan ,  Jing Liu

IPC: G01N29/12 ,  G06N20/10

CPC classification number: G01N29/12 ,  G06N20/10

Abstract: Disclosed is a method for predicting surface quality of a burnishing workpiece. The method includes the steps: using vibration sensors and signal acquisition instrument to acquire vibration signals generated on a surface of the burnishing workpiece during machining, evaluating the surface quality of the burnishing workpiece based on a coupling coordination degree model, processing signals by using an ensemble empirical mode decomposition method, identifying power spectral density, kurtosis and form factor as signal characteristics, identifying a support vector machine as a decision-making model, optimizing penalty parameters and kernel function parameters by using the Bayesian optimization method, and establishing the relationship between the signal characteristics and the surface quality. The method can quickly identify the signal characteristics for evaluating the workpiece surface quality, thereby improving the workpiece surface quality by intervening in process parameters, making up for the technical defect that condition monitoring cannot be performed during the machining process.

公开(公告)号：US11852610B2

公开(公告)日：2023-12-26

申请号：US18025403

申请日：2021-03-19

Applicant: HARBIN INSTITUTE OF TECHNOLOGY, SHENZHEN

Inventor： Donglai Zhang ,  Wei Gao ,  Xueli Zhu

IPC: G01N29/12 ,  G01N29/04

CPC classification number: G01N29/12 ,  G01N29/048 ,  G01N2291/0234

Abstract: A method for detecting a tension force defect of a steel cable includes the following steps: step S10: providing an excitation sensor on a first position of a steel cable to be detected and providing a detection sensor on a second position of the steel cable; step S20: obtaining a value of a tension force on the steel cable and obtaining a first display diagram corresponding to the value of the tension force; step S30: loading a white noise signal on the excitation sensor through a power amplifier; step S40: acquiring a detection signal collected by the detection sensor; step S50: uploading the detection signal to a personal computer (PC) and performing a Fast Fourier Transform (FFT) process on the detection signal; step S60: determining whether there is a defect in the steel cable, and if so, performing step S70; step S70: determining a defect position of the steel cable.

公开(公告)号：US11826823B1

公开(公告)日：2023-11-28

申请号：US17390862

申请日：2021-07-30

Applicant: United States of America as Represented by the Secretary of the Navy

Inventor： Charles Nguyen ,  Scott Ziv

IPC: B29C64/386 ,  G01N29/12 ,  B22F10/28 ,  B22F10/38 ,  B23K9/12 ,  B23K26/342 ,  B22F12/30 ,  B33Y40/00 ,  B22F12/50 ,  B22F12/90 ,  B33Y30/00 ,  B22F12/41

CPC classification number: B22F10/38 ,  B22F12/30 ,  B22F12/41 ,  B22F12/50 ,  B22F12/90 ,  B23K9/124 ,  B23K26/342 ,  B33Y30/00 ,  B33Y40/00

Abstract: The invention is a system for the in-situ monitoring of additive manufacturing. The system, without pre-calibration of a test sample, utilizes ultrasonic waves to conduct a layer-by-layer analysis of a three-dimensional component as it is being developed on a build plate. Resonant frequencies for each layer is measured and the difference between the resonant frequencies of consecutive layers are calculated to define a baseline frequency. Similarities or differences in baseline frequencies are used to validate the integrity of the layers of the component, and also to determine if structural inconsistencies exists. Based on these determinations, the system decides whether to continue printing or to halt printing.

公开(公告)号：US11815490B2

公开(公告)日：2023-11-14

申请号：US17821069

申请日：2022-08-19

Applicant: JANA Corporation

Inventor： Dalton Crosswell ,  Patrick Vibien ,  Wayne Bryce

IPC: G01N29/12 ,  G01N29/44

CPC classification number: G01N29/12 ,  G01N29/4427 ,  G01N2291/267

Abstract: A method and apparatus for inspecting a fusion joint is provided. The apparatus includes a processor, an ultrasound (“US”) probe in communication with the processor, and a database comprising classification rules. The processor is configured to generate an initial set of US scanning positions about the fusion joint based on information of at least one of the US probe and the fusion joint; measure, via the US probe, a US pulse-echo spectrum from at least two of the initial US scanning positions; compare each measured US pulse-echo spectrum with one or more known US pulse-echo spectrums; classify each measured US pulse-echo spectrum according to the classification rules; and evaluate an aggregate of measured US pulse-echo spectrums to determine if the fusion joint is defective.

公开(公告)号：US20230359116A1

公开(公告)日：2023-11-09

申请号：US17738024

申请日：2022-05-06

Applicant: Intel Corporation

Inventor： Safak SAYAN ,  Jae Young KANG ,  Abdolreza JAVADI ,  Srinath SATYANARAYANA ,  Herbert HSU ,  Christopher KAPLAN

IPC: G03F1/64 ,  H04R1/02 ,  B08B7/02 ,  B08B11/02 ,  B08B13/00 ,  G01N29/12

CPC classification number: G03F1/64 ,  H04R1/028 ,  B08B7/026 ,  B08B11/02 ,  B08B13/00 ,  G01N29/12 ,  G03F1/22

Abstract: The present disclosure is directed to a membrane cleaning system and a membrane cleaning process, the membrane cleaning system including: a membrane; a membrane holder accommodating the membrane in a cut-out section within the membrane holder, wherein the cut-out section allows access to the membrane from two opposing sides; and a speaker configured to emit sound waves of a resonant frequency of the membrane for a predetermined duration and at a predetermined amplitude, wherein the sound waves are directed to one side of the membrane.

公开(公告)号：US20230258606A1

公开(公告)日：2023-08-17

申请号：US17822253

申请日：2022-08-25

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Akihiko ENAMITO ,  Tatsuhiko GOTO ,  Osamu NISHIMURA

IPC: G01N29/12 ,  G01N29/04 ,  G01N29/44 ,  H04R1/08 ,  H04R3/00

CPC classification number: G01N29/12 ,  G01N29/045 ,  G01N29/4463 ,  H04R1/08 ,  H04R3/00 ,  G01N2291/023 ,  G01N2291/0289

Abstract: According to one embodiment, an inspection apparatus includes a vibration sensor, a microphone, and a processor. The vibration sensor detects a vibration of an inspection target object to which the vibration is excited. The microphone arranged near the inspection target object and collects a radiated sound from the inspection target object. The processor calculates an impulse response between the vibration sensor and the microphone. The processor denoises an unnecessary component from the impulse response. The processor converts the impulse response into a frequency characteristic. The processor calculates acoustic energy between the vibration sensor and the microphone based on the frequency characteristic. The processor determine the presence/absence of an abnormal state of the inspection target object.

公开(公告)号：US20230228384A1

公开(公告)日：2023-07-20

申请号：US17928898

申请日：2020-06-03

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Masaru OKUTSU ,  Akira ITO

IPC: F17D5/06 ,  G01N29/12 ,  G01N29/04

CPC classification number: F17D5/06 ,  G01N29/12 ,  G01N29/048

Abstract: A detection device (100) for detecting damage to a conduit (300) buried in ground includes: a sensor (10) for detecting breaking sound at the time of conduit damage; a processing unit (20) for determining a relation of magnitude between a characteristic value of the breaking sound and a threshold; and an indication unit (30) for indicating that the conduit is damaged when the relation of magnitude satisfies a predetermined condition.

公开(公告)号：US20230213484A1

公开(公告)日：2023-07-06

申请号：US17568847

申请日：2022-01-05

Applicant: The Boeing Company

Inventor： David W. Arnold ,  Samuel R. Goertz

IPC: G01N29/12 ,  G01N29/44 ,  G01N29/48

CPC classification number: G01N29/12 ,  G01N29/4427 ,  G01N29/48 ,  G01N2291/014

Abstract: A method for inspecting a fastened structure, the fastened structure having at least one structural member defining a bore therein and a mechanical fastener received in the bore, includes applying acoustic energy to the fastened structure, the acoustic energy being applied over a plurality of frequencies, measuring a response of the fastened structure across at least two frequencies of the plurality of frequencies, and comparing the response of the fastened structure at the at least two frequencies of the plurality of frequencies to predefined values for the at least two frequencies of the plurality of frequencies to determine whether an out-of-tolerance condition is present.

公开(公告)号：US20230194477A1

公开(公告)日：2023-06-22

申请号：US18080510

申请日：2022-12-13

Applicant: EBARA CORPORATION

Inventor： Yuta SUZUKI ,  Taro TAKAHASHI

IPC: G01N29/12 ,  G01H1/06 ,  G01N29/30 ,  B24B37/34 ,  B24B49/00

CPC classification number: G01N29/12 ,  G01H1/06 ,  G01N29/30 ,  B24B37/34 ,  B24B49/003

Abstract: A method in which an acoustic sensor disposed in a polishing apparatus can be accurately calibrated is disclosed. In this method, polishing sounds of a substrate are acquired using an acoustic sensor; and then at least two distinctive sounds, having distinctive frequencies respectively, are selected from the acquired polishing sounds. Further, the at least two distinctive sounds are output from a sound source coupled to any of a polishing table, the acoustic sensor, and a substrate holder to cause the at least two distinctive sounds to be input to the acoustic sensor. Next, output values of the acoustic sensor are calibrated, such that the output values of the acoustic sensor relative to the at least two distinctive sounds come within an allowable range.