This paper defines structural and dynamic analysis of a crane used for electric passenger vehicle fire scenarios. The crane model used in the study has a working radius of 9 meters, and under extreme conditions measured with real-world usage in mind, the load at the boom tip is 24.5kN. The boom is assumed to be made of ATOS80, and the pads are assumed to be made of Monomer Casting Nylon. Structural analysis was conducted based on the crane's materials and configuration, and dynamic analysis was performed by dividing the grab method into gripper and hinge types. In the structural analysis, the maximum stress increased as the telescopic boom faced upwards. In the dynamic analysis, the gripper type facing downward showed more stable stress. For the model with an added badge, the structural analysis showed an increase in maximum stress, but the value was negligible, and the maximum stress of the telescopic boom decreased in the dynamic analysis. Based on the analysis results, the suitable materials for the crane are ATOS80 for the lower articulated boom and the telescopic boom, and DOMEX1300 for the upper articulated boom. The gripper type grab method is more stable than the hinge type.

PURPOSES : This study is conducted to evaluate the development of materials for extinguishing ESS(Energy Storage System) fires in electric vehicles using industrial byproducts. METHODS : Grout containing an appropriate amount of fly ash, silica fume, blast furnace slag powder, and ferronikel slag, which are industrial byproducts, was prepared. The fluidity, stress, and mechanical properties were evaluated in accordance with standard test methods. RESULTS : The fluidity of the materials used for the evolution of ESS fires differed depending on the material of the industrial byproducts. In the case of blast furnace slag, its fluidity is low owing to viscosity even when it content is high, and the use of ferronikelsrag is shown to be suitable for the evolution of ESS fires in fluidity and curing tests. CONCLUSIONS : Fire-extinguishing materials using industrial byproducts require a long curing time but exhibit the fluidity required for ESS fire extinguishment. In particular, the curing and fluidity of Peronikel slag and fly ash are suitable for ESS fire extinguishing.