Diagnostyka最新文献_第8页

Preliminary assesment of ADIS16470AMLZ sensor for monitoring of seismic activity in mining area ADIS16470AMLZ传感器监测矿区地震活动的初步评价

Diagnostyka Pub Date : 2022-11-24 DOI: 10.29354/diag/152952

M. Śmieja, Jakub Banach, Tomasz Majkusiak, J. Rapiński

引用次数: 0

Utilization of magnetic signature of automotive tire for exploitational wear assessment 汽车轮胎磁特征在开发性磨损评估中的应用

Diagnostyka Pub Date : 2022-11-17 DOI: 10.29354/diag/156255

S. Brol, Jan Warczek

引用次数: 0

Intelligent fault diagnosis of power transmission line using fuzzy logic and artificial neural network 基于模糊逻辑和人工神经网络的输电线路智能故障诊断

Diagnostyka Pub Date : 2022-11-14 DOI: 10.29354/diag/156495

K. Touati, M. Boudiaf, I. Merzouk, A. Hafaifa

引用次数: 1

Enhancement of thermal efficiency of nanofluid flows in a flat solar collector using CFD 利用CFD提高平板太阳能集热器内纳米流体流动的热效率

Diagnostyka Pub Date : 2022-11-10 DOI: 10.29354/diag/156384

Falah Zarda, A. Hussein, S. Danook, Barhm Mohamad

引用次数: 2

Computer-aided diagnostics of injection and combustion processes in engines equipped with Common Rail fuel injection 共轨燃油喷射发动机喷射和燃烧过程的计算机辅助诊断

Diagnostyka Pub Date : 2022-11-09 DOI: 10.29354/diag/156388

W. Lotko

{"title":"Computer-aided diagnostics of injection and combustion processes in engines equipped with Common Rail fuel injection","authors":"W. Lotko","doi":"10.29354/diag/156388","DOIUrl":"https://doi.org/10.29354/diag/156388","url":null,"abstract":"In earlier designs, the compression-ignition engine units were controlled by means of mechanical elements. They were levers, rods, springs, pawls, cams and others. The quality of such control did not ensure the required repeatability of control parameters in the fuel injection and combustion process. After the introduction of the standards limiting engine emissions of the limited exhaust components, the aforementioned engine control systems were not able to meet the requirements. The mechanical regulation of mechanical systems has been replaced by electronic control systems. It was the development of computer techniques and software that enabled design solutions of control systems for injection and combustion process parameters in engines with sufficient accuracy and repeatability of test results. The modern EDC (Electronic Diesel Control) control system, due to the computing power of microprocessors increased in recent years, enables meeting high requirements of modern Common Rail injection systems. The article presents issues in the area of four thematic levels: the design and modernization of the engine, its operation, diagnostic problems in order to determine reasons of unit failures and bench-top methods for assessing the effectiveness of unit repairs as well as issues concerning alternative fuels .","PeriodicalId":52164,"journal":{"name":"Diagnostyka","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42445369","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

Diagnostics of stabilization modes of shape strand ropes 异形股钢丝绳稳定模式的诊断

Diagnostyka Pub Date : 2022-11-09 DOI: 10.29354/diag/156385

V. Orobey, Oleksii Nemchuk, O. Lymarenko, V. Piterska, O. Sherstiuk, I. Lehetska

引用次数: 0

Safety critical components (SCC) in the maintenance management system for railway vehicle 轨道车辆维修管理系统中的安全关键部件

Diagnostyka Pub Date : 2022-11-08 DOI: 10.29354/diag/156166

Katarzyna Gawlak

引用次数: 2

Load capacity and design parameters of ball-type safety-overrunning clutch with inclined grooves sides 斜槽边球型安全超越离合器的承载能力及设计参数

Diagnostyka Pub Date : 2022-10-19 DOI: 10.29354/diag/155837

V. Protsenko, Volodymir Malashchenko, S. Kłysz, V. Nastasenko, Mykhaylo Babiy, O. Avramenko

{"title":"Load capacity and design parameters of ball-type safety-overrunning clutch with inclined grooves sides","authors":"V. Protsenko, Volodymir Malashchenko, S. Kłysz, V. Nastasenko, Mykhaylo Babiy, O. Avramenko","doi":"10.29354/diag/155837","DOIUrl":"https://doi.org/10.29354/diag/155837","url":null,"abstract":"Article deals with safety-overrunning clutches for mechanical transmissions. Modern design of safety-overrunning clutch with grooves sides inclined to semi-coupling radius has been described and researched in the article. It has practical value for creation modular-type machines. On the basis of the theoretic studies, the expressions for obtaining the main specific operation parameters have been proposed: rating torque, beginning and ending operation torques. As the result of the studies, the equations for estimation the clutch main operation characteristics have been received - rating torque exceeding coefficient, coefficients of clutch accuracy and sensitivity. On account of modeling and comparison with clutch where grooves sides are parallel to the radius made a number of important conclusions. The analysis performed demonstrates that clutches with inclined to radius grooves sides in general have higher operation characteristics compared with clutches with parallel to radius grooves sides, particularly higher accuracy coefficient and lower rating torque exceeding coefficient. Obtained results make it possible to recommend for highly loaded large-mass systems clutches with low values of grooves to clutch axe and grooves sides to radius inclination angles, because it provides balls contact with plane sides grooves surfaces and through this allows to decrease contact stresses compared with clutches with grooves sides parallel to radius; allows to provide high load capacity with low rating torque exceeding in overload mode; in clutches with inclined to radius grooves sides friction impact manifests less in operation with high rotation frequency.","PeriodicalId":52164,"journal":{"name":"Diagnostyka","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47020829","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

The role of lightweight materials in modern transport vehicles 轻量化材料在现代运输车辆中的作用

Diagnostyka Pub Date : 2022-10-19 DOI: 10.29354/diag/155850

Ł. Wierzbicki, J. Ćwiek

引用次数: 1

A discrete model for geometrically nonlinear free and forced vibrations of stepped and continuously segmented Euler-Bernoulli AFG beams (SAFGB) carrying point masses 带点质量的阶跃和连续分段Euler-Bernoulli AFG梁（SAFGB）几何非线性自由振动和强迫振动的离散模型

Diagnostyka Pub Date : 2022-10-14 DOI: 10.29354/diag/155191

Anass Moukhliss, A. Rahmouni, Othman Bouksour, R. Benamar

{"title":"A discrete model for geometrically nonlinear free and forced vibrations of stepped and continuously segmented Euler-Bernoulli AFG beams (SAFGB) carrying point masses","authors":"Anass Moukhliss, A. Rahmouni, Othman Bouksour, R. Benamar","doi":"10.29354/diag/155191","DOIUrl":"https://doi.org/10.29354/diag/155191","url":null,"abstract":"A discrete model is applied to handle the geometrically nonlinear free and forced vibrations of beams consisting of several different segments whose mechanical characteristics vary in the length direction and contain multiple point masses located at different positions. The beam is presented by an N degree of freedom system (N-Dof). An approach based on Hamilton's principle and spectral analysis is applied, leading to a nonlinear algebraic system. A change of basis from the displacement basis to the modal basis has been performed. The mechanical behavior of the N-Dof system is described in terms of the mass tensor m ij , the linear stiffness tensor k ij , and the nonlinear stiffness tensor b ijkl . The nonlinear vibration frequencies as functions of the amplitude of the associated vibrations in the free and forced cases are predicted using the single mode approach. Once the formulation is established, several applications are considered in this study. Different parameters control the frequency-amplitude dependence curve: the laws that describe the variation of the mechanical properties along the beam length, the number of added masses, the magnitude of excitation force, and so on. Comparisons are made to show the reliability and applicability of this model to non-uniform and non-homogeneous beams in free and forced cases.","PeriodicalId":52164,"journal":{"name":"Diagnostyka","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42410572","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