The Hardness Change Due to High-Speed Impact on A36 Steel on Penetration Testing of School Barrier Systems

Abstract

Impact Doors and Windows are increasingly on demand for safety and security. They already existed, standardized in in continual improvement. Several tough materials have been in use, in Schools, Government buildings, Banks and else. Here, we are interested in a specific steel alloy that is readily available, globally used in both in military and commercial use in numerous applications. Namely A36 steel alloy. We became specifically familiar with its properties, characteristics and behavior under impacts to molecular and crystalline structure level. ln addition to its toughness, it’s weldability and machinability makes it an appealing candidate to consider testing its suitability to withstand and resist shock loading impacts to meet the standards to use in high security entry doors. Although, for the level of security demand, a Ballistic, or bullet-proof material that is totally penetration preventer or forbidder does not yet exist. However, our own experience with A36 steel in previous studies has motivated us to consider this steel alloy for the purpose of designing doors with the characteristics of reasonable impact resistance feature expecting to meet or exceed the existing toughness standards with the advantage of commercial availability and wide spread.