• Title/Summary/Keyword: casting

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Effects of the Food Web Casting on College Student's Viewing Happiness and Attitude Towards Obesity (인터넷 개인방송 먹방 시청이 한국 대학생들의 시청행복감과 비만 인식에 미치는 영향)

  • Jin, Jiang Xue;Hwang, HaSung
    • Journal of Internet Computing and Services
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    • v.20 no.4
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    • pp.103-111
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    • 2019

  • Due tothe popularity of personal web-casting 'Food Web Casting' program, the present study aims to examine its effects on real life. The study conducted a survey with Korean college students. Results from a survey of 256 participants showed that first, the most salient reason for watching 'Food Web Casting' was gratification for killing time and gratifications for food entertainment, information, vicarious, and para social interaction are followed. Second, vicarious gratification, killing time gratification, and vicarious gourmandism gratification had a positive effect on Food Wed Casting programs viewing time, while it is not found for effects of gratifications for information and pro-social interaction. Third, it is found that Food Wed Casting programs viewing had effects on viewing happiness and negative perception of fat people. However, it did not have an effect on frequency of food delivery service. Based on these findings,implication, limitations, and topics for future research are discussed.

  • https://doi.org/10.7472/jksii.2019.20.4.103 인용 PDF KSCI HTML

Machine Learning-based Process Condition Selection Method to Prevent Defects in Korean Traditional Brass Casting (한국 전통 유기 제작에서 결함을 방지하기 위한 기계 학습 기반의 공정 조건 선택 방안)

  • Lee, Seungcheol;Han, Dosuck;Yi, Hyuck;Kim, Naksoo
    • Journal of Korea Foundry Society
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    • v.42 no.4
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    • pp.209-217
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    • 2022

  • In the present study, in order to prevent the misrun defects that occur during traditional brass casting, a method for selecting the proper casting process conditions is proposed. A learning model was developed and demonstrated to be able to learn the presence or absence of defects according to the casting process conditions and to predict the occurrence of defects depending on the certain process given. Appropriate process conditions were determined by applying the proposed method, and the determined conditions were verified through a comparison of different simulation results with additional conditions. With this method, it is possible to determine the casting process conditions that will prevent defects in the desired sand model. This technology is expected to contribute to realization of smart traditional brass farming workshops.

  • https://doi.org/10.7777/jkfs.2022.42.4.209 인용 PDF KSCI HTML

Investigation of Gas Evolution in Shell Cores during Casting Processes of Aluminum Alloys (알루미늄 합금 주조공정의 쉘 코아 가스 발생 전산모사 연구)

  • In-Sung Cho;Jeong-Ho Nam;Hee-Soo Kim
    • Journal of Korea Foundry Society
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    • v.43 no.4
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    • pp.187-193
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    • 2023

  • Shell core making is an excellent process in terms of formability and desanding, but when the molten aluminum comes into con- tact with the shell core, gas generation by pyrolysis of the resin is inevitable. In addition, when the ventilation is inadequate, pores will remain inside the casting, which can directly lead to defects of the casting. While studies on the gas generation behavior of shell core making have been reported, the modeling of gas generation has not been extensively investigated. We will develop a gas evolution analysis method that considers the relationship between temperature and gas quantity for the core to be developed. We then use the developed method to analyze the flow and solidification behavior of metal molten metal during core mold design and low-pressure casting of cylinder head products, and predict the occurrence of casting defects to derive a casting method that min- imizes the occurrence of defects.

  • https://doi.org/10.7777/jkfs.2023.43.4.187 인용 PDF HTML