• Proceedings of the Korean Society of Disaster Information Conference
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• 2015.11a
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• pp.130-131
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• 2015

이 논문은 패널의 각 단층 구성 재료에 고인장, 경량화, 부착성능, 내화성능 등을 향상시켜 단층 각각의 개별적인 특수 성능과 복합패널 구성물로서의 방호방폭 성능을 극대화 할 수 있는 섬유복합패널 외피와 충전재(나노복합소재) 및 접착제에 대한 기초 연구를 수행하였다.

• Journal of the Society of Disaster Information
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• v.12 no.4
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• pp.373-380
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• 2016

In order to develop composite fiber panels that can maximize the protection and blast resistance of the existing structures by improving lightweight, high-strength and fireproof performances of the single layer material of precast panels, the basic properties of the inner and outer covers that are mixed with aramid fibers (AF) and polyester fibers (PF) were evaluated in this study. Also, a basic study was performed on the performance of composite fiber panels by testing Nano-sized composite materials that are lightweight and excellent in fire resistance for their compressive strength, bending strength and tensile strength.

• Journal of the Korea Institute of Building Construction
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• v.23 no.6
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• pp.715-726
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• 2023

This study suggested that protective panels should be installed as sacrificial members as a safety design method for structures with potential explosions such as hydrogen charging stations to minimize direct damage to the structure and have resilience. To this end, the focus of the experiment is on quantitatively evaluating the impact of the structure when the protection panel is installed closely or spaced apart from the structure in a high-speed collision situation of the projectile. The experimental design used steel plates instead of concrete structural members mainly used in the past for excellent reproducibility, and the impact of structural members was compared and analyzed through deformation differences on the back of the steel plate. In addition, the impact of changes in the physical properties of the elastic body used as a separation material for the protective member and the difference in shock wave transmission time according to the protective member and the elastic body on the structural member was investigated.

• Journal of the Society of Disaster Information
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• v.12 no.4
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• pp.432-439
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• 2016

To make a model of a Impact/Blast resistant composite material and perform the analysis, material properties of the composite material are required. In order to obtain such a property value, it is necessary to input the result obtained by performing a lot of material tests by the calculation formula of the situation, and there is a lot of difficulty in the case of a special purpose material which is not a general material. In this study, modeling and structural analysis of composite fiber panels for protection and explosion - proofing were performed in ACP(ANSYS Composite PrePost) and AUTODYN by applying the application properties of composites provided in Ansys Workbench environment.

• Journal of the Society of Disaster Information
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• v.16 no.3
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• pp.421-429
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• 2020

Purpose: The purpose of this study is to present step-by-step countermeasures to prevent fires in sandwich panel warehouses and to enhance on-site fire response capabilities. Method: Interviews of firefighters related to fire sites, advice from fire experts, and experiments on protection performance were conducted to draw up measures for each element to strengthen on-site response capabilities. Result: The fire safety management checklist for warehouse fire safety managers and the installation standards for wall protection of sandwich panel warehouses are presented. In addition, Standard Operational Procedures(SOP) for fire application of sandwich panel warehouses were established for firefighters on-site. Conclusion: Through this study, step-by-step fire safety measures were established for preventing, protecting and suppressing fires in sandwich panel warehouses.

• Journal of the Society of Disaster Information
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• v.11 no.2
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• pp.235-243
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• 2015

The methods to improve the protection and explosion-proof performance of concrete structures include the backside reinforcement or concrete material property improvement and the addition of structural members or supports to increase the resistance performance, but they are inefficient in terms of economics and structural characteristics. This study is about the basic study on the fiber composite panel cover, and the nano-composite material and adhesive as the filler, to maximize the specific performance of each layer and the protection and explosion-proof performance as the composite panel component by improving the tensile strength, light weight, adhesion and fire-proof performances. The fiber composite panel cover (aramid-polyester ratios of 6:4 and 6.5:3.5) had a 2,348 MPa maximum tensile strength and a 1.8% maximum elongation. The filler that contained the nano-composite material and adhesive had a 4 MPa maximum tensile shear adhesive strength. In addition, the nano-composite filler was 30% lighter than the normal portland cement

• Journal of the Society of Disaster Information
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• v.15 no.1
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• pp.98-108
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• 2019

Purpose: The purpose of this study is to test the sprinkler performance to protect the wall and ceiling joints of the sandwich panel warehouse in case of fire. Method: Based on the field surveys, test was setup and combustibles were prepared. The sprinkler discharge tests were performed at the corner of the wall and right under the sprinkler head. Results: It has been found that operation of the K-80 closed sprinkler head prevents the ignition of the sandwich panel and therefore no damage to the joints of sandwich panels. To prevent skipping phenomenon, it is necessary to install the sprinkler head from the corner of the wall and to keep a minimum distance of 2.4m and a maximum distance of 3m. Conclution: A Standard Operation Procedure should be prepared to suppress and rescue of fire brigade for a sandwich panel warehouse protected by perimeter sprinklers preventing a ignition of core materials and control fire.

• Journal of the Society of Disaster Information
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• v.10 no.3
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• pp.388-395
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• 2014

In this paper, usability and use force on the structure and does not have a big impact on the development of existing materials developed using materials to their full impact/blast resistant Complex configuration on the panel that can be implemented. Each material of the characteristics so that they can exert in layers of layer formed panels in layers. Structure of the general structure is to keep strength and endurance, maintenance and minimize the damage can be utilized for knee brace to do basic research, for creating the panel.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.1
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• pp.464-469
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• 2019

A remote monitoring panel and control system was developed to control various valves and access control chambers, including gas shutoff valves used in CBR(Chemical, Biological and Radiological) facilities. The remote monitoring panel consisted of a main panel installed in the NBC (Nuclear, Biological and Chemical) control room and auxiliary panel installed in the clean room, and the size was divided into pure control and control including CCTV. This system can be monitored and controlled remotely according to the situation where an explosion door and gas barrier door can occur during war and during normal times. This system is divided into normal mode and war mode. In particular, it periodically senses the operation status of various valves, sensors, and filters in the CBR facilities to determine if each apparatus and equipment is in normal operation, and remotely alerts situation workers when repair or replacement is necessary. Damage due to the abnormal operation of each device in the situation can be prevented. This enables control of the blower, supply and exhaust damper, emergency generator, and coolant pump according to the state of shutoff valve and positive pressure valve in the occurrence of NBC, and prevents damage caused by abrupt inflow of conventional weapons and nuclear explosions.

• Journal of the Korea Concrete Institute
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• v.28 no.2
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• pp.141-148
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• 2016

This paper employed finite element method (FEM) to study the dynamic response of Steel Fiber-Reinforced Concrete(SFRC) panels subjected to impact loading by spherical projectiles. The material properties and non-linear stress-strain curves of SFRC were obtained by compression test and flexural test. Various parametric studies, such as the effect of fiber volume fraction and thickness of panels, are made and numerical analyses are compared with experiments conducted. It is shown that protective performance of concrete panels will be improved by adding steel fiber. Area loss rates and weight loss rates are decreased with increasing fiber volume fraction. Also, penetration modes can be expected by FEM, showing well agreement with experiment. Results can be applied for designing the protection of military structures and other facilities against high-velocity projectiles.