Weapon Equipment Research Articles

Trade-off of Tactical Technical Indicators Based on Improved Branch and Bound Method

In view of the relative lack of research on the method of determining the Tactical Technical Indicators requirements through the typical indexes trade-off model in the domestic combat technology index demonstration, based on the non-convex quadratic programming problem widely used in engineering design and economies of scale, a new linear relaxation is proposed with the help of the characteristics of the quadratic function The method uses the new ultra-rectangular reduction and pruning techniques according to the differential median theorem, and uses the branch and bound method to solve, which provides a quantified and efficient method for determining the technical parameters of the weapon equipment design.

Research on Effectiveness Evaluation Method of Weapon Equipment

Due to the wide application of high and new technology in weapons and equipment, modern weapons present the characteristics of complexity and systematization, and their effectiveness analysis and evaluation are paid more and more attention, which has become an arduous and urgent task in the research of weapon equipment system. Only by using scientific methods and technology to evaluate the effectiveness of various types of weapons and equipment, can we have a profound understanding of the characteristics and application value of weapons and equipment, ensure that the army can give full play to the operational potential of weapons and equipment, improve the operational efficiency, and explore the correct direction of the construction and development of weapons and equipment. Therefore, systematic research on weapon equipment effectiveness evaluation method is a necessary way for every military equipment effectiveness researcher to seek effective and accurate quantitative analysis of weapon equipment effectiveness method.

Effect of no-pressure curing temperature on bending property of 2D-T700/E44 composite

Carbon-fiber-reinforced polymer (CFRP) composites have received extensive attention in aerospace, weapon equipment, communication electronics, transportation and other fields. The improved compression-molding process is one of the most advantageous processes for preparing CFRP composites. It is important to understand the effects of molding process parameters, in particular temperature parameters, on the preparation of an ideal composite. This paper addresses the effect of the no-pressure curing temperature on the two-dimensional woven CFRP (2D-CFRP) bending property of the improved compression-molding process. 2D-T700/E44 composites were prepared under no-pressure curing temperatures of 80, 90, 100, 110, 120 and 130°C. The effect law and influence mechanism of the temperature parameter on the microstructure and bending property of composites were summarized. The results show that excessively high or low no-pressure curing temperatures are unfavorable for the preparation of 2D-T700/E44 composites. When the temperature is 110°C, the impregnation effect of the resin is ideal, and the defects are effectively controlled. The fracture morphology is reasonable, and the performance is greatly improved, so the bending strength reaches 860 MPa.

Research on Weapon Equipment Purchase Performance Evaluation Based on Support Vector Machine

In this paper, we present an efficient performance evaluation method of weapon equipment purchase based on support vector machine. Firstly, the concept of weapon equipment purchase performance evaluation was explained and the existing problems of weapon equipment purchase performance evaluation were analysed. Then, a 12-dimension performance evaluation indicator system was constructed (these dimensions are: budget progress, cost-benefit ratio, expenditures reduction rate, supplier satisfaction, purchaser satisfaction, customer satisfaction, purchase cycle rationality, qualification rate, price rationality, competition, success rate, and policy completeness). And lastly, a weapon equipment purchase performance evaluation model based on support vector machine was established, and a case analysis was conducted. The result provides a reference for building the indicator system and model for weapon equipment purchase performance evaluation and the research conclusion can help complete and improve the evaluation method.

Building of Longitudinal Ultrasonic Assisted Turning System and Its Cutting Simulation Study on Bulk Metallic Glass.

Bulk metallic glass (BMG) is a new kind of material which is made by rapid condensation of alloy. With excellent properties like high strength, high hardness, corrosion resistance, BMG is increasingly applied in mold manufacturing, weapon equipment and other fields. However, BMG is also one of hard-to-machine materials, which is arduous to be processed precisely and efficiently by the means of conventional cutting. Compared with conventional cutting, ultrasonic machining has a multitude of technological advantages such as reducing the cutting force, extending the tool life, etc. In ultrasonic machining, the ultrasonic electric signal is transformed into high frequency mechanical vibration on the tool, which changes the relationship between the tool and the workpiece in the process of machining. In this study, the longitudinal ultrasonic assisted turning (LUAT) system is established for processing BMG. Its resonant frequency and vibration characteristics are first simulated by modal analysis and harmonic response analysis, and then tested by displacement testing experiments, so that the suitable frequency and the amplitude for BMG turning can be selected and verified. On this basis, the two-dimensional turning finite element model is established to study the effect of ultrasonic vibration on cutting force under different cutting speeds. The research manifest that during the BMG turning, the assistance of longitudinal ultrasonic vibration can significantly reduce the average cutting force as well as the von Mises stress when the turning speed is below the critical turning speed. In addition, the tip of the tool contacts the workpiece discontinuously during cutting process which makes the instantaneous turning force in LUAT more periodic than that in conventional turning (CT).

Design of Fault Diagnosis System Based on Fuzzy Inference for a New Type Equipment

Aimed at the puzzle of non-bijection between cause and symptom of the fault for a new type equipment system, the paper built the mathematical model of fuzzy inference by means of inference mecha- nism of fuzzy relation. In the paper, it designed the overall scheme of fault diagnosis system, and realized the function of system fault diagnosis by means of VC + + programming language according to the diagnosis flow of system. Through actual example validation, it shows that it satisfies the accuracy of fault diagnosis for a new type equipment system. The fault diagnosis of weapon equipment has always been an important topic for military research. With the change of war mode, higher requirements have been put forward for weapon equipment support technology. A new type of equipment is widely used in the land war, so some faults also appear one after another. In the long-term research, it is found that there is a fuzzy relationship between these fault phenomena and the causes. A fault does not correspond to a fault cause in modern mathematics, fuzzy mathematics can clarify the relationship between fault symptoms and fault causes in the equipment system. In this paper, the fuzzy fault diagnosis method is used to build a general fault diagnosis system to realize the fast and accurate analysis and diagnosis of faults.

Sensitivity analysis of radial defect detection of gun barrel based on ultrasonic guided wave

In this paper, aiming at the low efficiency of defect detection of weapon equipment, ultrasonic guided wave non-destructive testing technology is proposed to detect the radial wear defects in gun barrel which have a great impact on its combat effectiveness. At the same time, the sensitivity of different modes of L0,2 and t0,1 ultrasonic guided waves to the detection of such defects is analyzed in this paper, so as to provide theoretical guidance for the mode selection of ultrasonic guided waves in the next practical detection of gun barrel.

Flexible and durable cellulose/MXene nanocomposite paper for efficient electromagnetic interference shielding

Flexible and multifunctional electromagnetic shielding (EMI) materials have attracted tremendous attention in the field of electromagnetic compatibility and civilian protection. However, these materials encounter an intrinsic contradiction between effective integration of multiple functions and simple, low-cost manufacture process. Herein, a highly electrically/thermally conductive MXene/cellulose nanocomposite paper was fabricated via a simple dip-coating method. Benefiting from the three-dimensional interconnected MXene (Ti3C2Tx) network, the resultant paper exhibits a marvelous electrical conductivity of 2756 S/m at a nanosheet loading of 1.89 vol%. Followed by a polydimethylsiloxane (PDMS) coating, the as-prepared freestanding nanocomposites with 0.2 mm thickness can reach an exceptional EMI shielding effectiveness of over 43 dB in the X and Ku band at the Ti3C2Tx loading of 1.07 vol%, and no apparent decline is observed after 2000 bending-releasing cycles in the durability test. In addition, an in-plane thermal conductivity of 3.89 W/(m⋅K) is achieved, which is 540% higher than that of PDMS coated neat filter paper. This work provides facile strategy to large-scale and green production of flexible and multifunctional EMI materials. Considering the prominent performance, the obtained nanocomposite paper has promising applications in aerospace, stealth weapon equipment, smart electronics and flexible devices.

Demand Forecast of Weapon Equipment Spare Parts Based on Improved Gray-Markov Model

Abstract The demand for spare parts of weapons and equipment is time-varying and random. It is difficult to predict the demand for spare parts. Therefore, on the basis of gray GM(1,1), a state transition probability matrix based on improved state division is used to establish a demand forecast model for weapon equipment and spare parts. The model not only considers the characteristics of the GM(1,1) model’s strong handling of monotonic sequences, but also extracts the characteristics of random fluctuation response of data through the transformation of the state transition probability matrix, avoiding the phenomenon of the worst prediction results when the maximum probability state is not the actual state. It is proved through experiments that the prediction result based on the improved gray-Markov model is superior to the traditional model and the classic gray-Markov prediction model, and the accuracy of the improved model is about 1.46 times higher than that of the gray model.

Design and analysis of a kind of engineering information security protection system

This paper firstly briefly analyzes the general design principles and special requirements of a certain type of engineering information security protection system. This paper focuses on the analysis of information security technology prevention system design. This paper is based on modern information technology and fully adopts the latest development and concepts of information security protection technology; The design analysis process makes extensive use of computer, network security, automation, industrial control, and other technologies. The purpose of this paper is to make a certain engineering and weapon equipment information security protection system adapt to the special environment of information security, reliability, and confidentiality. Another purpose is to realize the particularity, advancement, practicability, and expansibility and of a certain type of engineering information security protection system.

Analysis on the influence factors of operational test effectiveness

Operational test is the concrete embodiment of actual combat guidance in the field of weapon equipment test and evaluation. Based on the analysis of the operational test process, this paper summarizes the operational test requirements and components. Based on the interaction between them, 18 factors of 5 categories affecting the effectiveness of operational tests were analysed, provides a reference for promoting the follow-up operational test to be carried out more scientifically.

Electrochromic coloration of single-layer ITO:Nb oxides thin film

Electrochromic (EC) materials have a wide range of applications such as intelligent energy-saving windows, low-energy display, automotive anti-pull rearview mirror and infrared stealth of satellite and weapon equipment, which is of great significance for research. The Nb-ITO with electrochromic property thin films are deposited by Pulse Laser Deposition (PLD) at different pressure of 1 Pa, 3 Pa and 5 Pa via changing oxygen. Crystal texture of the film prepared under 1 Pa and 5 Pa is confirmed by x-ray diffraction as well as amorphous structure in 3 Pa. Bonding vibration information of Nb doped with other elements such as O, In and Sn was detected by Raman spectroscopy. The electrical properties of materials satisfied the basic conditions of electrochromic are proved by Hall effect test. The transmission spectra under different voltage from 0 V to 20 V of films prepared at different pressure is measured. Finally, three type materials with flexible and adjustable electrochromic properties, including change with wavelength (the film prepared at 1 Pa), voltage (the film prepared at 5 Pa) and stable chromatic transmittance difference (the film prepared at 3 Pa) are successfully obtained by this work.

Weapon equipment management cost prediction based on forgetting factor recursive GM (1,1) model

PurposeThe purpose of this paper is to provide a new recursive GM (1,1) model based on forgetting factor and apply it to the modern weapon and equipment system.Design/methodology/approachIn order to distinguish the contribution of new and old data to the grey prediction model with new information, the authors add forgetting factor to the objective function. The purpose of the above is to realize the dynamic weighting of new and old modeling data, and to gradually forget the old information. Second, the recursive estimation algorithm of grey prediction model parameters is given, and the new information is added in real time to improve the prediction accuracy of the model.FindingsIt is shown that the recursive GM (1,1) model based on forgetting factor can achieve both high effectiveness and high efficiency.Originality/valueThe paper succeeds in proposing a recursive GM (1,1) model based on forgetting factor, which has high accuracy. The model is applied to the field of modern weapon and equipment system and the result the model is better than the GM(1,1) model. The experimental results show the effectiveness and the efficiency of the prosed method.

Research on Construction of Intelligent Operational Simulation Test Environment

With the development of simulation technologies, simulation test has become an important means of weapon equipment demonstration, finalization and operational test and evaluation, but the simulation test system built for the performance evaluation cannot meet the requirements of system of systems (SoS) operational test and evaluation. This paper analyzes the requirements of the operational simulation test for the intelligent simulation test system and puts forward an intelligent simulation framework of the complex simulation test system and its main elements, which realizes the simulation of the operational activities with uncertain confrontation process and can support the demonstration, construction and evaluation of the weapon equipment system. The research results have been applied to the construction of a certain simulation system and provided support for the test and evaluation of equipment SoS tests.

The 3D-simulation design of interactive action based on the magnetoresistive sensor

The project based on virtual maintenance technology is derived from the virtual maintenance platform of weapon equipment, and designed action acquisition module which used the magneto resistive sensor to collect body movements condition from the training person. The body movements condition was transmited to the 3d view field of the upper machine, and then drived the virtual character to do what the the training person did synchronously. Model of body movements, program framework of the sync action between virtual and real, and the design of ant geomagnetic interference by the module of magneto resistive sensor are given by Orger engine in the 3d view field. The resultes of application displays that the design realized target demand of real-time interactive between virtual and real, and the design has characteristics as stable circuit response, accurate transmission and good antiinterferance.

Research on Information Collection Method Based on Equipment Serial Bus

Equipment status and operation information acquisition are the basis of information technology support. The distributed design of serial bus is widely used in modern weapon equipment. Based on the equipment control bus, it is more economical and convenient to realize the equipment status and operation information collection. The equipment status and operation information acquisition method based on equipment control bus is studied and two kinds of information acquisition mode are explored particularly in this paper. That application and existing problems are also analyzed. The future development of equipment status and operation information acquisition based on equipment control bus is summarized in the last.

Design and Implementation of Rule Inference Engine in ESTSWEU

According to the characteristics and requirements of the teaching simulation expert system for weapon equipment utilization, the expert system inference module designs a rule-based reasoning engine technology, the separation of equipment using expert knowledge and control strategy is realized, and the administrator can edit expert knowledge, enhances the expansibility and flexibility of the system. Firstly, this paper introduces the structure, function and equipment rule type of ESTSWEU, and then expounds the general framework and working principle of rule reasoning engine in weapon equipment teaching simulation expert system, and finally the implementation of rules in the rule inference engine framework, the XML-based storage technology, the rule base interface, the equipment database and access interface, the object-oriented rules engine call interface, the rule execution engine processing flow and the establishment of the rule base are introduced in detail.

Operational capability evaluation based on improved generalized grey incidence analysis model

To solve the problem of operational capability evaluation of weapon equipment system-of-systems (WESoS), a capability-based method is proposed based on an improved generalized grey incidence analysis (GGIA) model. A hierarchy description framework is proposed, which establishes a mapping relationship between weapons and operational capabilities. Four types of capability requirement functions are proposed to assess the performance of weapons on tactical indicators. The deficiencies of the traditional GGIA model are analyzed, and the improvement is proposed to calculate the satisfaction degree of weapon equipment to a certain operational capability. Then, regardless of other subjective factors, the contribution degree of a certain operational capability to WESoS is determined combined with the maximum entropy model and genetic algorithm. Finally, the feasibility and effectiveness of the proposed algorithm are verified by experimental comparison.

Lightweight and flexible MXene/CNF/silver composite membranes with a brick-like structure and high-performance electromagnetic-interference shielding.

With the increasing global electromagnetic pollution, it is more and more important to develop lightweight, flexible, and high electromagnetic shielding materials. Two-dimensional (2D) transition metal material MXenes have good conductivity and excellent electromagnetic shielding performance. Herein, a facile and effective method is reported to synthesize lightweight and flexible MXene/CNF/silver (MCS) composite membranes with a brick-like structure and high-performance electromagnetic interference shielding. MCS composite membranes have an electromagnetic shielding performance of ≈50.7 dB due to MXene self-reduction of silver nanoparticles and the brick-like structure, compared with that of MXene/CNF (MC) membranes (≈14.98 dB). In addition, the MCS composite membranes exhibit super-thin thickness (46 μm) and good tensile strength (up to 32.1 MPa), and their good mechanical properties are attributed to the addition of CNFs. Moreover, the MCS composite membranes show good electrical conductivity (588.2 S m−1). Therefore, MCS composite membranes that are lightweight and flexible and have high electromagnetic shielding performance can replace other electromagnetic shielding materials and be used in aerospace, weapon equipment, and wearable smart materials.

新型武器装备作战流程设计与验证技术研究

新型武器装备作战流程设计与验证技术研究