Crack detection on sheared-edge of ultra-high strength steel sheet by using acid immersion

Azzmer, S. and Jaafar, H. and Tajul, Liyana and Sulaiman, Mohd Hafis and Zainal Abidin, Zailani (2020) Crack detection on sheared-edge of ultra-high strength steel sheet by using acid immersion. In: 2nd Joint Conference on Green Engineering Technology & Applied Computing 2020, 4th - 5th February 2020, Bangkok, Thailand.

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Abstract

t. In trimming of ultra-high strength steel (UHSS) sheet, the high strength of the sheet usually results in large fracture and low burnish surfaces on the sheared-edge. For metal stamping industries, large fracture surfaces are unwanted, as it not only deteriorates shearededge quality but also leads to delayed-crack. In this study, crack detection by using acid immersion on the sheared-edge of ultra-high strength steel sheet caused by the trimming process was investigated. The ultra-high strength steel sheet of JSC780YN, JSC980YN, and JSC1180YN having different strengths were trimmed and immersed in 35% hydrochloric acid under a controlled time interval. The steel sheet with higher strength was found to produce larger fracture surface after trimming, i.e. more than 50% of the entire sheared-edge is fracture surface. Besides, the larger fracture surface of the steel sheet results in higher crack exposure and higher crack propagation, which in the long run, it can cause failure to the part manufactured using UHSS.

Item Type:	Conference or Workshop Item (Plenary Papers)
Additional Information:	9398/83712
Uncontrolled Keywords:	Crack detection, sheared-edge, ultra-high strength steel sheet, acid immersion
Subjects:	T Technology > T Technology (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr Mohd Hafis Sulaiman
Date Deposited:	15 Oct 2020 12:37
Last Modified:	07 Jan 2021 16:44
URI:	http://irep.iium.edu.my/id/eprint/83712

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