• Title, Summary, Keyword: Machinery inspection

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The Importance of Self-Inspection in Accident Prevention (자체검사제도가 갖는 재해예방 효과)

  • 백종배
    • Journal of the Korean Society of Safety
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    • v.16 no.4
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    • pp.175-181
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    • 2001
  • In compliance with the Industrial Safely and Health Acts, the owners/users have performed self-inspection at regular intervals to secure safety in the use of hazardous machinery, equipment and facilities However, securing safety, which is the goal of self-inspection, has not been thoroughly understood in most small businesses and factories. The objective of this research is to analyze the importance and effects of self-inspection in preventing accidents in businesses and factories that use hazardous machinery and facilities. The result shows that self-inspection has made a good contribution to the prevention of accidents. Most businesses and factories that responded the survey answered they have improved safety in the use of machinery and facilities through self-inspection, though the ways of self-inspection were not all the same. However, the result also reveals that there are rooms for further improvement in the areas of self-inspection intervals, self-inspection methods and the selection of self-inspection objects. This improvement is necessary to improve the effect of self-inspection and to minimize regulations of the government on business activities.

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Basic research, according to the inspection of crane equipment (크레인 설비의 검사에 따른 기초연구)

  • An, Tae-Keon;Shim, Kyu-Hyung;Rie, Dong-Ho
    • Journal of the Korea Safety Management and Science
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    • v.14 no.4
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    • pp.169-175
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    • 2012
  • Self-Inspection is being used in the workplace hazardous, dangerous machinery and equipment to build capacity for the voluntary safety risks due to use of machinery and prevention of industrial accidents that inspect facilities for safety issues, is to check. However, December 31, 2008 as part of Article 36 of the Occupational Safety and Health Act (safety inspection), the financial vanish as the self-test, Safety inspection program has been changed., In each individual workplace that creates its own standards and regulations to use the existing inspection system is in some cases. This study is located in the southeast industrial complex as a risk reducer manufacturer, machine-based target zones in S Corp owns most of the crane based on the results of the tests is to analyze the problem. Then check the results - to bring its measures and information you need to know for sure is to propose.

Development of Defect Inspection System for PDP ITO Patterned Glass

  • Song Jun-Yeob;Park Hwa-Young;Kim Hyun-Jong;Jung Yeon-Wook
    • International Journal of Precision Engineering and Manufacturing
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    • v.7 no.3
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    • pp.18-23
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    • 2006
  • The formation degree of sustain (ITO pattern) determines the quality of a PDP (Plasma Display Panel). Thus, in the present study, we attempt to detect 100% of the defects that are larger than $30{\mu}m$. Currently, the inspection method in the PDP manufacturing process is dependent upon the naked eye or a microscope in off-line mode. In this study, a prototype inspection system for PDP ITO patterned glass is developed. The developed system, which is based on a line-scan mechanism, obtains information on the defects and sorts the defects by type automatically. The developed inspection system adopts a multi-vision method using slit-beam formation for minimum inspection time and the detection algorithm is embodied in the detection ability. Characteristic defects such as pin holes, substances, and protrusions are extracted using the blob analysis method. Defects such as open, short, spots and others are distinguished by the line type inspection algorithm. It was experimentally verified that the developed inspection system can detect defects with reliability of up to 95% in about 60 seconds for the 42-inch PDP panel.

A study on automatic testing of powder metallurgy process using the visual inspection system (시각감시장치를 이용한 분말야금 공정의 검사자동화 기술개발에 관한 연구)

  • Kwon, Ki-Ryong;Choi, Jae-Youn;Choi, Sung-Lark
    • Journal of Institute of Control, Robotics and Systems
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    • v.3 no.1
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    • pp.89-93
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    • 1997
  • This paper describes the automatic testing system developed for powder metallurgy process using the visual inspection, and its some internal algorithms. The system consists of one unit from each of the five types of units; feeding, slot, vision inspection, volumn counter, and inferior good extractor units. Some applications of the system to powder metallurgy process has shown the possibility of reducing the rework and increasing the efficiency of operation.

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Factors and Developments in Grading Cut Flowers

  • Bae, Yeong-Hwan;Koo, Hyun-Mo
    • Proceedings of the Korean Society for Agricultural Machinery Conference
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    • pp.746-754
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    • 1996
  • Grading and sorting fresh cut flowers are time consuming process. In Korea, cut flowers are sorted mostly by human inspection due to the lack of adequate machinery. In this paper, quality evaluation factors of cut flowers are discussed, and types of sorting machines existing in the market are introduced . Aspects of computer image processing in evaluation the quality of cut flowers are also discussed.

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Fabrication of Mechanical fatigue flawed Specimen and Evaluation of Flaw Size (기계적 피로결함 시험편 제조 및 결함 크기 평가)

  • Hong, Jae-Keun;Kim, Woo-Sung;Son, Young-Ho;Park, Ban-Uk
    • Journal of the Korean Society for Nondestructive Testing
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    • v.23 no.1
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    • pp.38-44
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    • 2003
  • Performance demonstration with real flawed specimens has been strongly required for nondestructive evaluation of safety class components in nuclear power plant. Mechanical or thermal fatigue crack and intergranular stress corrosion cracking could be occured in the in-service nuclear power plant and mechanical fatigue crack was selected to study in this paper. Specimen was designed to produce mechanical fatigue flaw under tensile stress. The number of cycles and the level of stress were controlled to obtain the desired flaw roughness. After the accurate physical measurement of the flaw size and location, fracture surface was seal-welded in place to ensure the designed location and site. The remaining weld groove was then filled by using gas-tungsten are welding(GTAW) and flux-cored arc welding(FCAW). Results of radio graphic and ultrasonic testing showed that fatigue cracks were consistent with the designed size and location in the final specimens.

Computer-Aided Vibration Signal Processing and Fault Monitoring System of Electrical-Fan Motors (컴퓨터를 이용한 선풍기모터의 진동신호처리 및 이상진단에 관한 연구)

  • Sin, Jung-Ho;Hwang, Gi-Hyeon;Choe, Yeong-Hyu;Park, Ju-Hyeok
    • 한국기계연구소 소보
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    • pp.61-68
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    • 1987
  • The main objective of this paper is to develop the computer-aided vibrational signal processing and monitoring system of rotating machinery. This system has an automatic data acquisition capability and analyze for machine fault diagnosis. By spectrum analysis, machine’s failure can be identified. The monitoring system enables diagnosis of the fault in rotating machinery. In this study, the conventional electrical fans are selected as a model case. The date processing and fault monitoring system proposed here can be applied to the automation of the inspection process in assembling motor-shaft systems. The automatic inspection can enhance the product quality and keep it stable. Since the proposed system is developed for personal computers, it might be cheap in cost and easy in installation.

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STATUS AND PROSPECTS OF AGRICULTURAL MECHANIZATION IN KOREA

  • Chung, Chang-Joo
    • Proceedings of the Korean Society for Agricultural Machinery Conference
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    • pp.1-20
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    • 1996
  • This paper is to review the progress and the present status of mechanization in Korean agriculture and to introduce the development of the various sectors related to developing agricultural mechanization such as production, inspection , marketing , research and development , professional education , after-sales-service and adminstration. In addition, prospect of farm mechanization is also briefly discussed.

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