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Modelling of non-symmetrical side-extrusion in preparation of steering knuckle preform
Numerical modelling Extrusion Die-forging Steering knuckle
2010/1/11
The conventional forging of steering knuckle makes many problems such as: creation of material defects, high force of process, low charge yield. The aim of research was optimization of preform shape f...
注射成型和注射压缩成型角窗的残余应力比较
注射成型 注射压缩成型 残余应力 角窗
2013/9/30
基于粘性流体力学基本方程和粘度模型,建立了注射成型和注射压缩成型的残余应力计算模型,然后对角窗的注射成型和注射压缩成型进行了计算模拟,结果表明,注射成型角窗的残余应力大,且分布范围宽;注射压缩成型角窗的残余应力相对较小,且分布范围较窄,这种特征与注射压缩成型时熔体流动阻力小、型腔压力和体积温度分布均匀有关。最后采用偏振光法对实际注射成型和注射压缩成型角窗的应力分布进行了测试,进一步验证了注射压缩成...
以稳定期的浸矿细菌菌液为研究对象，探讨苯酚-硫酸法测定浸矿细菌胞外聚合层中多糖含量的最佳条件，并用红外光谱检测浸矿细菌胞外聚合层中多糖的结构组成。研究结果表明，苯酚-硫酸法测定浸矿细菌胞外聚合层中多糖含量的最佳条件为：最大吸收波长490 nm，浓硫酸用量5 mL，苯酚溶液质量分数5%；在最佳条件下测得的浸矿细菌胞外多聚合层中的多糖质量浓度为12 mg/L；由红外光谱分析浸矿细菌胞外聚合层中的多糖，...
The management of accidents
Accidents Causes Results Management
2009/12/14
Purpose: This author’s experiences in investigating well over a hundred accident occurrences has led to questioning how such events can be managed - - - while immediately recognising that the idea of ...
Calculation of the cooling condition in the phase change problem
Solidification Inverse Stefan Problems Genetic algorithm
2009/12/14
Purpose: The purpose of the paper is to present the method of calculation of the cooling condition in the phase change problem. The considered problem consists of the reconstruction of a function desc...
Integration of management systems on the chosen example
Quality management Environmental management Occupational health and safety management
2009/12/14
Purpose: The paper presents effects of integrated management systems implementation. Integration of these systems makes possible organization image and working efficiency improvement.
Design/methodol...
Reverse task of passive and active mechanical system in torsional vibrations
Process systems design Polar graphs Structural numbers
2009/12/14
Purpose: The main aim of this paper is to develop a method for finding structure and parameters, i.e. a structural and parameter synthesis, of an active model of a viscous damper mechanical system in ...
The Poka-Yoke method as an improving quality tool of operations in the process
Quality management Mistake proofing Poka-Yoke method
2009/12/14
Purpose: A new approach for the implementation of quality philosophy Zero Quality Defects with usage of the Poka-Yoke method in the polish organization has been presented.
Design/methodology/approach...
Hybrid ANFIS-ants system based optimisation of turning parameters
Machining Turning optimization ANFIS-Ants technique
2009/12/14
Purpose: The paper presents a new hybrid multi-objective optimization technique, based on ant colony optimization algorithm (ACO), to optimize the machining parameters in turning processes.
Design/me...
Assessment of the didactic measurement results using FCM type networks
E-learning Computer aided teaching Course management system
2009/12/3
Purpose: The paper presents students egzamination system developer for the scaleable e-learning system. Organisation of the teaching and examination processes, as well as the implementation details ar...
Analysis of structural properties of aluminium skeleton castings regarding the crystallization kinetics
Casting Skeleton casting Solidification
2009/12/3
Purpose: The aim of this research was the definition of technological parameters influence and modification treatment on structural properties of closed skeleton castings. Approach obtained maximal re...
Criteria of microstructural assessment of the conventional and new TBC layers
Metallic alloys Thin & thick coatings TBC
2009/12/3
Purpose: The purpose of this paper is to present principles and criteria of microstructural assessment of thermal barrier coatings (TBCs). The conventional layers are described in expert papers, where...
Powder pneumatic injection as a tool for wastes utilization
Cleaner production Industrial application of cleaner production methods Casting
2009/12/3
Purpose: Metallurgical process generates many solid, gaseous and liquid wastes. Nowadays when environmental protection is one of the most important problems and when pollution limits are very tight as...
FEM analysis of drills used in bone surgery
Numerical techniques Finite Elements Methods Metallic materials
2009/12/3
Purpose: The aim of the work was determination of biomechanical analysis of a surgical drill – bone system in simulated conditions of drilling in a bone.
Design/methodology/approach: Geometrical mode...
Effects of particle size distribution on the refractory properties and corrosion ultra-low cement castables
Ultra-low cement castables (ULC) Particle size distribution Rheolology Slag penetration
2009/12/2
Design/methodology/approach: In this study the effect of particle size distribution on refractory properties of
ultra-low cement castables was investigated. Secar 71 cement was used as a binder. The ...
