نشریه پژوهش در مهندسی نگهداشت دفاعی
پیاپی 5 (بهار و تابستان 1400)

Designing and manufacturing anti-mine boots insoles is important in the military defense industry to reduce explosion damage.

In this research, first, several types of anti-mine boots are examined and then, the proposed models are designed and analyzed by Autodein finite element software. The data presented by the reference research were used to validate the results of the numerical analysis.

The simulation results of the present study with the reference research had acceptable accuracy. In the proposed models, the reliability coefficient for each model was calculated and compared to a base model.

The proposed models are designed with a combination of metals and composite materials with different thicknesses. Among the studied samples, a design with lateral surfaces of steel sheet with a thickness of 1 mm and two insoles of three layers of steel, Kevlar-epoxy fabric and glass-epoxy with thicknesses of 1, 1 and 2 mm were used, respectively. , Can improve reliability by up to 60%. Also, the structure of this type of boot is proposed in such a way that the sole of the foot moves 15 cm away from the center of the explosion, which reduces the destructive effects by up to 5 times.

The purpose of this study is to outline the interactions within and outside the organization of the standardization system in the equipping cycle of a military organization that deals with its pillars, models and principles.In this article, in order to create a system in the proposed models, a series of definitions, roles and responsibilities in different stages of model implementation are defined. By implementing the proposed models and strategies, it is possible to help reduce the concerns of managers, especially managers in the field of readiness and support of a military organization.This research has been written in a real experimental method and special attention has been paid to its executive aspects. Given the importance and necessity of fully establishing the standardization system in the procurement processes of a military organization, it is necessary to follow the recommendations.The achievements of this paper provide a large and comprehensive picture of the concept of standardization in the equipping cycle of a military organization in which its structural, process, executive management and value concepts are examined and the feedback received on the opposite sides of the models. Keeps the proposal active and finally complete and basic strategies will be introduced based on the opinions of organizational experts.

Nowadays, the construction industry progress is one of the indicators of the countries development. On the other hand, with the population growth and, accordingly, the increase in the desire for urbanization, the need for housing has become more crucial and more than ever. In recent years, the construction of high-rise buildings has been considered with the aim of saving expensive land consumption. Certainly, the effect of structural design in these buildings is more significant than usual and shorter buildings. In high-rise structures, the structural system is one of the most important and decisive parts of the design. So, the key aim of this study is to evaluate and prioritize concrete appropriate for use in high-rise buildings. To analyze the data, first, the types of important and usable concretes in this type of buildings were identified using library studies and in the analysis process, the opinions of experts including 4 employers, 3 contractors, 2 consulting companies, and 12 university professors were used. In the current study, 6 concretes were selected that had the highest degree of repeatability in the implementation of high-rise structures. Then, to use the fuzzy DEMATEL method, each of the concretes was scored, and finally, the effectiveness of each of them was determined. The research results reveal that High Strength Self Compacting Concrete (B3) is the most effective factor and ordinary concrete (B5) is the most effective concrete for use in high-rise buildings.

The civil engineering document is a documentary building that contains technical building information and is issued by the building engineering organization. If the quality information provided in this identification document is in fact and in fact documented and sufficiently adequate, it will reasonably result in a quality building certificate. It should be noted that how to comply with national building regulations and standards and urban planning standards for its efficiency as a quality building certificate is required. From a global perspective in many advanced countries, this design has been implemented and used for many years. This role plays an important role when it comes to extracting the quality certification of the building accurately and, as in most of the advanced construction countries, it has achieved a qualitative classification of the buildings to varying degrees, Be quality. Regarding the above mentioned issues, this study will attempt to first investigate and identify the most important challenges in transforming the technical certificate of the real estate of the building into a quality certificate and then, using statistical methods and multi-criteria decision making, to prioritize Identified factors should be taken. The results show that enough attention paid to the quality of the building occupants such as the project manager and responsible for quality control can have a significant positive effect on obtaining a quality building certificate.