公开(公告)号：US20250067698A1

公开(公告)日：2025-02-27

申请号：US18949456

申请日：2024-11-15

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Jung Hoon LEE ,  Su Taek JUNG ,  Seok Jin KIM ,  Ji Hoon LEE ,  Sang Hyun KOO

IPC: G01N27/20 ,  B23K31/12 ,  B23K101/36 ,  G01N27/04 ,  G01N33/207 ,  H01M10/052 ,  H01M10/42 ,  H01M10/48 ,  H01M50/536

Abstract: The present invention provides an apparatus for inspecting a welding state in a welded portion for an electronic or mechanical coupling in a lithium secondary battery, the apparatus including: a measuring unit configured to obtain data for deriving a resistance value of the welded portion by allowing a resistance measuring probe to contact the welded portion; and a controller configured to communicate with the measuring unit, determine the resistance value of the welded portion by receiving the data obtained from the measuring unit, and determine whether a weak welding was performed by comparing the determined resistance value with a threshold resistance value, in which the measuring unit is configured to allow the resistance measuring probe to contact one end and the other end of the welded portion.

公开(公告)号：US20240418631A1

公开(公告)日：2024-12-19

申请号：US18744134

申请日：2024-06-14

Applicant: DAIHEN CORPORATION ,  OSAKA UNIVERSITY

Inventor： Seiya Nitta ,  Keiji Kadota ,  Toshiyuki Tanaka ,  Satoru Asai ,  Kazufumi Nomura

IPC: G01N21/17 ,  B23K31/12 ,  G01N33/2045 ,  G01N33/207

Abstract: A welding inspection method includes a step S102 of removing an impurity at a surface of a weld with a surface treatment apparatus, a step S110 of irradiating the surface of the weld from which the impurity has been removed with transmission laser light, a step S120 of detecting reflected ultrasound reflected by a lower surface of a base material, and a step S150 of determining whether or not there is an internal defect in the weld based on a result of detection of reflected ultrasound.

公开(公告)号：US20240353387A1

公开(公告)日：2024-10-24

申请号：US18632429

申请日：2024-04-11

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yosuke TAMADA ,  Tomoko OGASAHARA ,  Tomohiko SEKIGUCHI

IPC: G01N33/207 ,  B23K11/11 ,  B23K11/16

CPC classification number: G01N33/207 ,  B23K11/16 ,  B23K11/115

Abstract: A spatter detection method in which the accuracy of detection of an occurrence of sputter is high, and a method for manufacturing a welded member are provided. A spatter detection method according to the present disclosure is a spatter detection method for detecting an occurrence of sputter in resistance spot welding, the resistance spot welding being welding in which a material to be welded, obtained by stacking a plurality of metal members on one another, is joined by sandwiching the material to be welded between a pair of electrodes and feeding an electric current therethrough, in which the occurrence of sputter is detected based on a change in a volume of a molten part of the material to be welded.

公开(公告)号：US20240337604A1

公开(公告)日：2024-10-10

申请号：US18745134

申请日：2024-06-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Toru SAKAI ,  Masashi YOSHIDA ,  Michio SAKURAI ,  Daichi HIGASHI

IPC: G01N21/88 ,  B23K31/12 ,  B23K37/02 ,  G01N33/207 ,  G06T1/00 ,  G06T7/00 ,  G06T7/50 ,  G06V10/20 ,  G06V10/764

CPC classification number: G01N21/8851 ,  B23K31/125 ,  B23K37/0229 ,  G01N33/207 ,  G06T1/0014 ,  G06T7/0006 ,  G06T7/50 ,  G06V10/255 ,  G06V10/764 ,  G01N2021/8887 ,  G06T2207/20081 ,  G06T2207/30136 ,  G06T2207/30164 ,  G06V2201/06

Abstract: An appearance inspection apparatus includes a shape measurement unit configured to measure the three-dimensional shape of a weld and a data processor configured to process shape data acquired by the shape measurement unit. The data processor includes a shape data processor configured to correct a resolution of the shape data, a learning data set generator configured to generate a plurality of learning data sets by performing data augmentation on multiple pieces of sample shape data acquired in advance, a determination model generator configured to generate a determination model using the plurality of learning data sets, and a first determination unit configured to determine whether the shape of the weld is good or bad based on the shape data having the corrected resolution and the determination model.

公开(公告)号：US12042877B2

公开(公告)日：2024-07-23

申请号：US16640636

申请日：2018-03-30

Applicant: HITACHI, LTD.

Inventor： Ryoji Nakagawa ,  Hisashi Endou ,  Hiroshi Yoshikawa ,  Toshihiro Yamada ,  Nobuhiro Kakeno ,  Hideya Isaka

IPC: B23K11/25 ,  B23K11/16 ,  B23K31/12 ,  B23K101/36 ,  G01N27/82 ,  G01N33/207

CPC classification number: B23K11/252 ,  B23K11/16 ,  B23K31/125 ,  G01N27/82 ,  G01N33/207 ,  B23K2101/36

Abstract: Provided is a welding management system that appropriately manages welding. The welding management system (100) includes a plurality of local magnetic sensors (10a to 10f) provided around a target joining position (K) and a correction magnetic sensor (20) curved to surround the target joining position (K). A data processing unit (30) generates information of a joining state of the target joining position (K) based on a difference between a detection value of each of the plurality of the local magnetic sensors (10a to 10f) and a detection value of the correction magnetic sensor (20).

公开(公告)号：US11898923B2

公开(公告)日：2024-02-13

申请号：US17274696

申请日：2019-08-22

Applicant: UNIVERSITY PUBLIC CORPORATION OSAKA

Inventor： Masakazu Shibahara ,  Kazuki Ikushima ,  Atsushi Kawahara ,  Yoshitaka Kawajiri ,  Yui Okimi

IPC: G01N33/207 ,  G01L5/00 ,  G06F30/23

CPC classification number: G01L5/0047 ,  G01N33/207 ,  G06F30/23

Abstract: A residual stress distribution measuring method of the present invention is characterized by comprising:



by using an analytical model in which a cut-surface is interpolated to a cross section of a metal member, the step of calculating a residual force vector that is a sum of a load vector acting on a first metal piece at the cut-surface and a load vector acting on a second metal piece at the cut-surface;
the step of calculating, as a modified displacement vector, an amount of movement at the cross section by interpolating the residual force vector as a forced load to the cross section of an analytical model of the metal member;
by using an analytical model having the shape of a cut-surface of a measured first or second metal piece, the step of modifying the shape of the cut-surface of the first or the second metal piece on the basis of the calculated modified displacement vector; and
by using the analytical model in which the shape of the cut-surface of the first or the second metal piece is modified, the step of calculating a residual stress distribution at the cross section by interpolating a forced displacement to the analytical model.

公开(公告)号：US20240044792A1

公开(公告)日：2024-02-08

申请号：US18379312

申请日：2023-10-12

Applicant: ASM IP Holding B.V.

Inventor： Shiva K.T. Rajavelu Muralidhar ,  Youness Alvandi-Tabrizi ,  John DiSanto ,  Sam Kim

IPC: G01N21/59 ,  G01N21/958 ,  G01B11/02 ,  G01N33/207

CPC classification number: G01N21/59 ,  G01N21/958 ,  G01B11/028 ,  G01N33/207 ,  G01N2201/021

Abstract: Methods and apparatus for measuring light intensity are disclosed. The methods and apparatus can be used to verify an article, such as a reaction chamber. Exemplary apparatus include a first arm, a light source coupled to the first arm, a second arm, and a sensor coupled to the second arm. The sensor can receive light from the light source that is transmitted through at least a portion of the article.

公开(公告)号：US11852620B2

公开(公告)日：2023-12-26

申请号：US17451290

申请日：2021-10-18

Applicant: The Boeing Company

Inventor： Morteza Safai

IPC: G01N33/207 ,  G01N29/04 ,  H05H1/24

CPC classification number: G01N33/207 ,  G01N29/043 ,  H05H1/2406 ,  G01N2291/267

Abstract: A system for evaluating a bond includes a first electrode and a second electrode that are spaced apart from one another. The system also includes a sacrificial material layer positioned proximate to a surface of a bonded structure that includes the bond. The system also includes a power source configured to cause the first and second electrodes to generate an electrical arc that at least partially ablates the sacrificial material layer as part of a non-destructive inspection of the bond.

公开(公告)号：US11740168B2

公开(公告)日：2023-08-29

申请号：US16871100

申请日：2020-05-11

Applicant: Volvo Car Corporation

Inventor： Martin Currie ,  Leif Winberg ,  Hans Lundberg

IPC: G01N3/307 ,  G01N3/02 ,  G01N33/207 ,  G01N3/62

CPC classification number: G01N3/307 ,  G01N3/02 ,  G01N3/62 ,  G01N33/207 ,  G01N2203/001 ,  G01N2203/0014 ,  G01N2203/0035

Abstract: A handheld quality inspection tool for projection welded components and method for utilizing the same is disclosed. The handheld quality inspection tool includes an elongated hollow tube, a spring support, a spring member, a plunger, and a handle. The elongated hollow tube defines a slot. The spring support is connected to an end portion of the elongated tube. The spring member is disposed within the elongated hollow tube and connected to the spring support. The plunger is disposed in the elongated hollow tube and connected to the spring member opposite the spring support. The handle is connected to the plunger and protrudes from the elongated hollow tube through the slot and is translatable along the slot to move the plunger and compress the spring member. Upon release of the handle, the compressed spring member propels the plunger to apply an impact force to a projection welded component.

公开(公告)号：US20230083207A1

公开(公告)日：2023-03-16

申请号：US17758751

申请日：2021-01-07

Applicant: SHANGHAI JIAOTONG UNIVERSITY

Inventor： Yujun XIA ,  Yan SHEN ,  Yongbing LI ,  Haiyang LEI

IPC: B23K11/25 ,  G01N33/207

Abstract: An intrinsic process signal-based online expulsion detection method for resistance spot welding process, which comprises: acquiring the intrinsic process signal and current signal output by sensors installed at two electrodes in real-time during the welding process and establishing a relationship graph; performing expulsion judgement based on the relationship graph to obtain expulsion frequency, single intrinsic process signal feature and an accumulated feature; calculating expulsion metal volume according to the accumulated feature and electrode profile features to obtain a prediction expulsion metal amount. The method performs online prediction of the expulsion metal amount according to the intrinsic process signal for resistance spot welding process, thereby achieving online quantitative estimation of the expulsion intensity, overcoming the defect of the traditional technology which relies on manual detection, and improving detection efficiency and accuracy.