• Title, Summary, Keyword: 3D Inspection Equipment

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Flip Chip Bump 3D Inspection Equipment using White Light Interferometer with Large F.O.V. (대시야 백색광 간섭계를 이용한 Flip Chip Bump 3차원 검사 장치)

  • Koo, Young Mo;Lee, Kyu Ho
    • Journal of the Korean Institute of Intelligent Systems
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    • v.23 no.4
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    • pp.286-291
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    • 2013
  • In this paper, in-line type flip chip bump 3D inspection equipment, using white light interferometer with large F.O.V., which is aimed to be used in flip chip bump test process is developed. Results of flip chip bump height measurement in many substrates and repeatability test results for the bumps in fixed location of each substrate are shown. Test results from test bench and those from developed flip chip bump 3D inspection equipment are compared and as a result repeatability is improved by reducing the impact of system vibration. A valuation basis for the testing quality of flip chip bump 3D inspection equipment is proposed.

Development of 3D Inspection Equipment using White Light Interferometer with Large F.O.V. (대시야 백색광 간섭계를 이용한 3차원 검사 장치 개발)

  • Koo, Young Mo;Lee, Kyu Ho
    • Journal of the Korean Institute of Intelligent Systems
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    • v.22 no.6
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    • pp.694-699
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    • 2012
  • In this paper, semiconductor package inspection results using white light interferometer with large F.O.V., in order to apply semiconductor product inspection process, are shown. Experimental 3D data repeatability test results for the same special bumps of each substrate are shown. Experimental 3D data repeatability test results for all the bumps in each substrate are also shown. Semiconductor package inspection using white light interferometer with large F.O.V. is very important for the fast 3D data inspection in semiconductor product inspection process. This paper is surely helpful for the development of in-line type fast 3D data inspection machine.

Structure and Fatigue Analyses of the Inspection Equipment Frame of a Semiconductor Test Handler Picker (반도체 테스트 핸들러 픽커 검사장비 프레임에 대한 구조 및 피로해석)

  • Kim, Young-Choon;Kim, Young-Jin;Kook, Jeong-Han;Cho, Jae-Ung
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.15 no.10
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    • pp.5906-5911
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    • 2014
  • Currently, there are many processes of package assembly and inspections of real fields that examine whether a manufactured semiconductor can be operated regularly and can endure low humidity or high temperatures. As the inspection equipment of a semiconductor test handler picker has been used at the inspection process, these inspection equipment frames were modelled in 3D and these models were analyzed using 3 kinds of fatigue loadings. As the analysis result, maximum deformation occurred at the midparts of the frames at cases 1 and 2. Among the cases of nonuniform fatigue loads, the 'SAE bracket history' with the severest change in load became the most unstable but the 'Sample history' became the most stable. Fatigue analysis result can be used effectively with the design of an inspecting equipment frame of a semiconductor test handler picker to examine the prevention and durability against damage.

Development of Remote Visual Inspection Technology for Calandria & Internal of CANDU NPP (중수로 칼란드리아 내장품 원격 육안검사 기술 개발)

  • Lee, Sang-Hoon;Jin, Seuk-Hong;Moon, Gyoon-Young
    • Transactions of the Korean Society of Pressure Vessels and Piping
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    • v.6 no.1
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    • pp.72-77
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    • 2010
  • During the period of reinforcement work for the licensing renewal of CANDU NPP, the fuel channels, Calandria tubes and feeders of CANDU Reactor are replaced. The remote visual inspection of Calandria internal is also performed during the period of reinforcement work. This period is a unique opportunity to inspect the inside of the Calandria. The visual inspection for the Calandria vessel and its internals of Wolsong NPP Unit 1 was performed by Nuclear Engineering & Technology Institute(NETEC) of KHNP. To perform this inspection, NETEC developed equipment applied new technology such as the synchronization of 3D CAD, automatic alignment and control system. The inspection confirmed that the Calandria integrity of Wolsong NPP Unit 1 is perfect.

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Internal Defects Inspection of Die-cast Parts via the Comparison of X-ray CT Image and CAD Data (CAD 데이터 및 엑스레이 CT이미지 비교를 통한 다이캐스팅 부품의 내부 결함 검사방법)

  • Hong, Gyeong Taek;Shim, Jae Hong
    • Journal of the Semiconductor & Display Technology
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    • v.17 no.1
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    • pp.27-34
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    • 2018
  • Industrially, die-casting products are formed through casting, and so the methods to inspect the defects inside them are very restrictive. External inspection methods including visual inspection, sampling judgment, etc. enables researchers to inspect possible external defects, but x-ray inspection equipment has been generally used to inspect internal ones. Recently, they have been also applying three-dimensional internal inspections using CT equipment. However, they have their own limitations in applying to the use of industrial inspection due to limited detection size and long calculation time. To overcome the above problems, this paper has suggested a method to inspect internal defects by comparing the CAD data of the product to be inspected with the 3D data of the CT image. In this paper, we proposed a method for fast and accurate inspection in three dimensions by applying x-ray inspection to find internal defects in industrial parts such as aluminum die casting products. To show the effectiveness of the proposed method, a series of experiments have been carried out.

A Design and Fabrication of Test Equipment for Airborne Tracking Radar Test (항공기용 추적레이더 시험을 위한 시험장비의 설계 및 제작)

  • Yoon, Seung-Gu;Park, Seung-wook;Kwon, Jun-Bum;Jung, Man-Seek
    • Journal of the Korea Institute of Military Science and Technology
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    • v.20 no.3
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    • pp.352-361
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    • 2017
  • This paper proposes a design and fabrication of the test equipment that is implemented as a part of the airborne tracking radar inspection under the environment of indoor simulation. This test equipment provides controlling the operation status of airborne tracking radar and replicating the velocity and range information of target by generating a variety of target signal. This is mainly composed of radar operation controller, target signal generator, horn antenna driving devices. Radar operation controller is able to perform the controlling of radar operation mode and monitoring in real time by serial communication. Target signal generator is generated doppler signal and range delayed signal using virtual target of RF-band. Horn antenna driving devices perform a role of target simulating exercise. In the end, the performance is demonstrated using experiment results of test equipment for airborne tracking radar.

Institutional Improvement of Construction-Related Laws for Practical Application of 3D Printing (3D 프린팅 실무 적용을 위한 건설 관련법 제도적 개선 방향)

  • Lee, Sung-Min;Park, Sang-Hoon
    • Journal of Korean Association for Spatial Structures
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    • v.19 no.4
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    • pp.85-94
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    • 2019
  • Then 3D printing is used practically at construction sites, there is a serious lack of studies on the conflict with construction-related laws and expected operational problems. Accordingly, the purpose of this study is to present obstacles and directions for improvement in construction-related laws (Building Act, Construction Technology Promotion Act, Housing Act, Construction Machinery Management Act, etc.) for practical operation of 3D printing. The important results are as follows. Amending existing construction-related laws for 3D printing is irrational and inefficient in terms of structure and material. This study proposed a method of satisfying performance required by laws or standards based on the performance design method presented in existing laws and systems through structure and material performance certification procedure. In addition, inclusion of 3D printing equipment in the Construction Machinery Management Act results in various restrictions such as equipment inspection and certification of machine parts. As such restrictions can block vitalization of 3D printing, a long-term and step-wise approach was suggested.

Development of electric vehicle maintenance education ability using digital twin technology and VR

  • Lee, Sang-Hyun;Jung, Byeong-Soo
    • International Journal of Advanced Culture Technology
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    • v.8 no.2
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    • pp.58-67
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    • 2020
  • In this paper, the maintenance training manual of EV vehicle was produced by utilizing digital twin technology and various sensors such as IR-based light house tracking and head tracker. In addition, through digital twin technology and VR to provide high immersiveness to users, sensory content creation technology was secured through animation and effect realization suitable for EV vehicle maintenance situation. EV vehicle maintenance training manual is 3D engine programming and real-time creation of 3D objects and minimization of screen obstacles and selection of specific menus in virtual space in the form of training simulation. In addition, automatic output from the Head Mount Display (HUD), EV vehicle maintenance and inspection, etc., user can easily operate content was produced. This technology development can enhance immersion to users through implementation of detailed scenarios for maintenance / inspection of EV vehicles" and 3D parts display by procedure, realization of animations and effects for maintenance situations. Through this study, familiarity with improving the quality of education and safety accidents and correct maintenance process and the experienced person was very helpful in learning how to use equipment naturally and how to maintain EV vehicles.