[ Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 30, No. 3, pp.190-196

ISSN: 2508-5107 (Online)

Print publication date 15 Jun 2021

Received 25 Mar 2021 Revised 20 Apr 2021 Accepted 26 Apr 2021

DOI: https://doi.org/10.7735/ksmte.2021.30.3.190

고경도 장갑판재의 TACOM 규격 평가를 통한 다양한 용접재료의 특성분석에 관한 연구

손휘준^a ; 정영철^b ; 박태원^c ; 김석^a ; 조영태^a^{, *}

Characteristics Analysis of Various Welding Materials through TACOM Standard Evaluation of High-Hardness Armor Plates

Hwi Jun Son^a ; Young Cheol Jeong^b ; Tae Won Park^c ; Seok Kim^a ; Young Tae Cho^a^{, *}

aDepartment of Mechanical Engineering, Changwon National University
bKorea Textile Machinery Convergence Research Institute
cAgency for Defense Development

Correspondence to: ^*Tel.: +82-55-213-3608 E-mail address: youngtae11@gmail.com (Young Tae Cho).

Abstract

A very thick single-armor material is generally used for bulletproof performance in combat vehicles; as a result, the combat capability is greatly reduced by the heavy weight. The armor plate of a combat vehicle is manufactured by applying a welding process to the joints of high-hardness steel. However, when applying the welding process to the high-hardness armor plate, the hardness decreases owing to hot softening in the heat-affected area, resulting in deterioration of the bulletproof performance. In this study, three different welding materials were selected, and their weld strengths were evaluated according to the TACOM standard. The mechanical properties and microstructures of the welded parts of the three materials were analyzed through tensile, bending, impact, and hardness tests. Finally, the most suitable welding material was selected for the high-hardness armor plate.

Keywords:

High hardness armor, Welding consumable, Gas metal arc welding, TACOM standard, Mechanical evaluation

Acknowledgments

본 연구는 과학기술정보통신부 및 정보통신기획평가원의 Grand ICT연구센터지원사업(IITP-2021-2016-0-00318) 및 한국연구재단의 지원을 받아 수행된 연구임(No. NRF-2019R1A5A8083201).

본 연구는 교육부(한국연구재단)의 지자체-대학 협력기반 지역혁신 사업(경상남도지역혁신플랫폼 스마트제조엔지니어링)으로 수행된 연구임.

본 연구의 시편을 제작하는데 도움을 주신 KISWEL 및 (주)풍산의 관계자 분들에게 감사드립니다.

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Hwi Jun Son

Master's program graduate students in the Department of Mechanical Engineering, Changwon National University.His research interest is Machine, Additive Manufacturing.

E-mail: gnlwns8902@naver.com

Young Cheol Jeong

Senior Researcher in Advanced Parts Equipment Research Center, Korea Textile Machinery Convergence Research Institute.His research interests are Optimization of Arc Welding Process and Smart Welding System.

E-mail : ycjeong@kotmi.re.kr

Tae Won Park

Principal Researcher in the Department of Defense Materials and Energy, Agency for Defense Development, Korea.His research interest is Development of New Materials.

E-mail: parktw9@nate.com

Seok Kim

Assistant Professor in the Department of Mechanical Engineering in Changwon National University.His research interests are Multiscale Manufacturing with functional materials for Energy, Environmental, and Biological Applications.

E-mail: kimseok@changwon.ac.kr

Young Tae Cho

Professor in the Department of Mechanical Engineering in Changwon National University.His research interests are Welding/Joining, Additive Manufacturing, Laser applied Material Processing, Nano-Micro Fabrication, Imprint Process, Super-Hydrophobic Surface Fabrication, Printed Electronics, and Precision Manufacturing System.

E-mail: youngtae11@gmail.com