Strojniški vestnik最新文献_第2页

An Improved MSCNN and GRU Model for Rolling Bearing Fault Diagnosis 一种改进的MSCNN和GRU滚动轴承故障诊断模型

Strojniški vestnik Pub Date : 2023-05-30 DOI: 10.5545/sv-jme.2022.459

Teng Wang, Youfu Tang, Tao Wang, Na Lei

引用次数: 1

Prioritizing the Key Actors of an Organization for Business Excellence Using the Efficient Interpretive Ranking Process 利用有效的解释性排名过程对企业卓越组织的关键角色进行优先排序

Strojniški vestnik Pub Date : 2023-05-30 DOI: 10.5545/sv-jme.2023.543

Sumit Kumar, Pardeep Gupta

{"title":"Prioritizing the Key Actors of an Organization for Business Excellence Using the Efficient Interpretive Ranking Process","authors":"Sumit Kumar, Pardeep Gupta","doi":"10.5545/sv-jme.2023.543","DOIUrl":"https://doi.org/10.5545/sv-jme.2023.543","url":null,"abstract":"Flexibilities are involved in the process of decision-making. They offer much freedom of choice in terms of the selection of suitable actors who interact with the dynamic environment of the organization. This paper presents a systematic and holistic approach to ranking key actors responsible for the business excellence of an organization. The study highlights the area where the actors of the organization should focus on achieving desired business excellence. It portrays the outcome in the form that top management is the most influential actor since it is responsible for the formulation of the vision/mission of the organization along with the setting of plant quality targets, cost-saving targets, manpower planning, and policy formulation for energy-saving. Top management is followed by cross-function teams (CFTs) and the government of India (GOI) in terms of interaction with the various processes. The novelty of this case study is that it utilizes qualitative and interpretive tools for the analysis, which does not require much statistical knowledge to produce outcomes, and the results are easy to understand. The reported results are in consensus with the results reported by various studies that are conducted using quantitative tools like Analytic Hierarchy Process (AHP), Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS), total interpretive structural modelling (TISM), etc. that require statistical excellence for the calculation, interpretation, and dissemination of results to the general public and shopfloor employees.","PeriodicalId":237575,"journal":{"name":"Strojniški vestnik","volume":"312 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135690621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Study Using the Hybrid Fuzzy AHP&TOPSIS Method in the Conversion of a LEED-Certified Education Building into a Nearly Zero-Energy Building in a Cold Climate 混合模糊AHP&amp TOPSIS法在寒冷气候条件下leed认证教育建筑近零能耗改造中的应用研究

Strojniški vestnik Pub Date : 2023-05-30 DOI: 10.5545/sv-jme.2023.529

Ali Celik, Bayram Sahin, Eyüphan Manay, Abit Balin

{"title":"A Study Using the Hybrid Fuzzy AHP&TOPSIS Method in the Conversion of a LEED-Certified Education Building into a Nearly Zero-Energy Building in a Cold Climate","authors":"Ali Celik, Bayram Sahin, Eyüphan Manay, Abit Balin","doi":"10.5545/sv-jme.2023.529","DOIUrl":"https://doi.org/10.5545/sv-jme.2023.529","url":null,"abstract":"In cold climate regions, it is essential to design and manufacture energy-efficient buildings for both economic benefits and the reduction of environmental effects by controlling energy consumption. This study aimed to increase the cost-effective energy performance and approach the nearly zero energy building (nZEB) by taking the leadership in energy and environmental design (LEED) in the cold climate region of Turkey as a model. The results of single and mixed scenarios that increase energy efficiency were determined by making energy modelling of the building. By applying single and mixed energy efficiency scenarios, a maximum saving of 85.60 % per year in terms of primary energy, an improvement of 83.6 % in terms of global costs and a reduction of 86.4 % in CO2 emissions were obtained compared to the reference building. The payback period of the scenarios is between 3.8 years and 14.53 years. The most suitable single and mixed scenario was determined by a systematic hybrid model, in which the fuzzy analytical hierarchy process (FAHP) and technique for order of preference by similarity to ideal solution (TOPSIS) methods among multi-criteria decision-making methods are used together. The results showed that economic criteria were decisive in determining the most suitable scenario for cold climate regions. The results of this study revealed that there can be a realistic decision-support model for the creation of energy-efficient buildings for countries without the need for foreign certification.","PeriodicalId":237575,"journal":{"name":"Strojniški vestnik","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135642949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental Study and Numerical Analysis on Windage Power Loss Characteristics of Aviation Spiral Bevel Gear with Oil Injection Lubrication 喷油润滑航空螺旋锥齿轮气动功率损失特性的实验研究与数值分析

Strojniški vestnik Pub Date : 2023-05-30 DOI: 10.5545/sv-jme.2023.558

Linlin Li, Sanmin Wang

{"title":"Experimental Study and Numerical Analysis on Windage Power Loss Characteristics of Aviation Spiral Bevel Gear with Oil Injection Lubrication","authors":"Linlin Li, Sanmin Wang","doi":"10.5545/sv-jme.2023.558","DOIUrl":"https://doi.org/10.5545/sv-jme.2023.558","url":null,"abstract":"With the increasing speed of aviation spiral bevel gears, the load-independent windage power losses caused by hydrodynamic have increasingly more influence on gear transmission efficiency. Firstly, a test rig for the windage power loss of spiral bevel gear under oil-jet lubrication is established, and on this basis, a method for measuring windage torque is proposed. Next, the interactive effects of different injection lubrication parameters on the windage power loss were studied by orthogonal experiment, and the formula for calculating the windage loss was obtained by fitting the experimental data. Then, the fluid distribution, velocity field and pressure field around the gear were analysed by using a computational fluid dynamics (CFD) numerical model, and the mechanical and energy characteristics of the gear windage power loss were obtained. Finally, the dimensionless processing of the windage moment was carried out, and the variation of the dimensionless windage moment coefficient with the rotational Reynolds number is obtained. The comparison between the dimensionless windage moment coefficient of experimental data and simulation results shows that the CFD values are in good agreement with the measured data. This study provides experimental and methodological guidance for the calculation of windage power loss and windage reduction design of aviation gear pair under oil injection lubrication.","PeriodicalId":237575,"journal":{"name":"Strojniški vestnik","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135642959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-Objective Optimization of the Chebyshev Lambda Mechanism Chebyshev Lambda机构的多目标优化

Strojniški vestnik Pub Date : 2023-01-04 DOI: 10.5545/sv-jme.2022.349

Daniel Miler, Dominik Birt, Matija Hoić

引用次数: 0

Predictions of Mechanical Properties of Quenched and Tempered Steel 调质钢力学性能的预测

Strojniški vestnik Pub Date : 2011-02-15 DOI: 10.5545/86_DOI_NOT_ASSIGNED

B. Smoljan, D. Iljkić, Furio Traven

{"title":"Predictions of Mechanical Properties of Quenched and Tempered Steel","authors":"B. Smoljan, D. Iljkić, Furio Traven","doi":"10.5545/86_DOI_NOT_ASSIGNED","DOIUrl":"https://doi.org/10.5545/86_DOI_NOT_ASSIGNED","url":null,"abstract":"Mechanical properties of quenched steel directly depend on the degree of quenched steel hardening. Fracture toughness and fatigue limit depend on microstructural constituents, and distribution of the usual intermetallic particles and non-metallic inclusions. Fatigue resistance of quenched and tempered steel is achieved by eliminating coarse alloy carbides present in steel. Properties of matrix may also have an important influence on fracture and fatigue proper behaviour. Most high-strength materials are fracture and fatigue limited. Fatigue strength is directly proportional to the difficulty of dislocation cross slip. Grain size has its greatest effect on fatigue life in the low-stress, high-cycle regime. In this paper, fatigue crack initiation threshold of quenched and tempered steel is predicted. The method of computer simulation of mechanical properties was applied for a workpiece of complex form made of quenched and tempered steel. Distribution of as-quenched hardness within workpiece of complex form was predicted by computer simulation of steel quenching using the finite volume method. Microstructure composition and hardness of tempered steel were predicted based on as-quenched hardness. Fatigue crack initiation threshold of quenched and tempered steel were predicted based on microstructure composition and hardness. It was found that the proposed method can be successfully applied in calculating fatigue crack initiation threshold of quenched and tempered steel.","PeriodicalId":237575,"journal":{"name":"Strojniški vestnik","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132913142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Analysis of Innovation Concepts in Slovenian Manufacturing Companies 斯洛文尼亚制造企业的创新理念分析

Strojniški vestnik Pub Date : 2010-12-15 DOI: 10.5545/158_DOI_NOT_ASSIGNED

I. Palčič, B. Buchmeister, A. Polajnar

引用次数: 33

Entropy generation and exergy efficiency in adiabatic mixing of nitrogen and oxygen streams of different temperatures and environmental pressures 不同温度和环境压力的氮氧流绝热混合的熵产和火用效率

Strojniški vestnik Pub Date : 2010-11-15 DOI: 10.5545/160_DOI_NOT_ASSIGNED

A. Galovic, Nenad Ferdelji, Saša Mudrinić

{"title":"Entropy generation and exergy efficiency in adiabatic mixing of nitrogen and oxygen streams of different temperatures and environmental pressures","authors":"A. Galovic, Nenad Ferdelji, Saša Mudrinić","doi":"10.5545/160_DOI_NOT_ASSIGNED","DOIUrl":"https://doi.org/10.5545/160_DOI_NOT_ASSIGNED","url":null,"abstract":"The paper presents a non-dimensional model of entropy generation and exergy efficiency in the \u0000adiabatic mixing of a nitrogen stream and oxygen stream with different temperatures and environmental \u0000pressure. The resulting mixture has the same, i.e. environmental, pressure. Non-dimensional variables in \u0000the model represent the ratio of thermodynamic stream temperatures u, the ratio between the \u0000thermodynamic temperature of one stream and the environmental temperature u1, and the mole fraction \u0000y1 of one of the streams. The model comprises irreversibility due to different temperatures of streams \u0000because of the mixing of different gases, while exergies of streams also comprise their mole fractions in \u0000the ambient air (atmosphere). In this respect, the model takes the standard values of mole fractions of \u0000oxygen and nitrogen of yO2 = 0.21 and yN2 = 0.79. The values of stream mole fractions at which maximum \u0000values of entropy generation and minimum values of exergy efficiencies occur are given. Calculation \u0000results are given in respective diagrams.","PeriodicalId":237575,"journal":{"name":"Strojniški vestnik","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129925608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Practical Applications of Set-Based Concurrent Engineering in Industry 基于集合的并行工程在工业中的实际应用

Strojniški vestnik Pub Date : 2010-11-15 DOI: 10.5545/149_DOI_NOT_ASSIGNED

D. Raudberget

引用次数: 76

Alternative to the Conventional Heating and Cooling Systems in Public Buildings 公共建筑中传统供暖和制冷系统的替代方案

Strojniški vestnik Pub Date : 2010-09-15 DOI: 10.5545/139_DOI_NOT_ASSIGNED

M. Košir, A. Krainer, M. Dovjak, Rudi Perdan, Ž. Kristl

引用次数: 23