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Fatigue Monitoring Tool for Airline Operators (FMT)

Regulation (EU) No 83/2014 . [Online]. Available: https://www.easa.europa.eu/document-library/regulations/commission-regulation-eu-no-832014 [6] International Civil Aviation Organization, Fatigue Risk Management Systems: Manual for Regulators . Canada, Montreal, Quebec: ICAO, 2012. [Online]. Available: http://www.icao.int/safety/fatiguemanagement/frms%20tools/doc%209966%20-%20frms%20manual%20for%20regulators.pdf [Accessed: December 19, 2017]. [7] P. Gander, L. Hartley, D. Powell, P. Cabon, E. Hitchcock, A. Mills, and S. Popkin, “Fatigue Risk Management

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Finite element simulation and experimental validation of the effect of tool wear on cutting forces in turning operation

1 Introduction Tool wear influences tool life, machining cost, and most importantly the machining quality. Thus a quantitative study of cutting forces is essential for tool life estimation and tool condition monitoring. Initially, experimental methods and analytical methods were used to study cutting forces. D’Mello et al . [ 1 ] investigated the effects of flank wear, cutting parameters, and tool vibrations on the surface roughness during high-speed turning of Ti–6Al–4V. Ning et al . [ 2 ] devised a set of turning experiments with tool inserts having

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Turning operation of AISI 4340 steel in flooded, near-dry and dry conditions: a comparative study on tool-work interface temperature

1 Introduction In the present day manufacturing environment, machining operations are inevitable in producing finished products. In any machining operation involving metal cutting, the usage of lubricants plays a vital role in maintaining favourable manufacturing conditions [ 1 ]. The favourable manufacturing conditions are a combination of certain process parameters and conditions, due to which best quality machine components are produced [ 2 , 3 ]. Above 95% of gross energy sustained to the machine tool is changed over into heat, because of the relative

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Effect of Minimum Quantity Lubrication on Surface Roughness and Temperature in Milling of EN31 Steel for Die Making

on Tool Wear, Job Dimension and Finish in Turning AISI-1040 Steel”, AEESEAP Journal of Engineering Education 31 (2), pp. 15 – 22, 2017 . [4] Himanshu, P. R., Lalta, P., Mayank, P., Vineet, Ti. “An Estimating The Effect Of Process Parameters On Metal Removal Rate And Surface Roughness In Wedm Of Composite Al6063/Sic/Al2o3 By Taguchi Method“, Journal of Mechanical Engineering – Strojnícky časopis 67 (2), pp. 25 – 36, 2017 . DOI: 10.1515/scjme-2017-0015 [5] Beri, N., Maheshwari, S., Sharma, C., Kumar, A. “Machining Performance Evaluation During Electric

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Simulation Process Deep Drawing of Tailor Welded Blanks DP600 and BH220 Materials in Tool With Elastic Blankholder

Abstract

The high-strength steels and tailor welded blanks (TWB) are applied in construction of cars parts to reduction of cars weight [1, 2]. The application of these materials brings possible complicatons during the forming when it proves the considerable influence of stress-strain characteristics differences of of the individual parts of TWB what result in non-constant material flow and consequently a negative movement of the weld interface [3, 4]. One of the ways of elimination of this negative effect is to choose a suitable blankholder system with optimal distribution of blankholder forces by using elastic blankholder with adjustable distribution of blankholder forces. Within the bounds of study the experimental blankholder system with elastic blankholder with adjustable distribution of blankholder forces was used [5, 6]. Finite element methods (FEM) simulation has unsubstitutable role n the study of formability of TWB whereby it is possible to determine the values and points of application of the blankholder forces [7, 8]. The FEM simulations results carried out in simulative LS-Dyna software are presented in this article which is focused on achieving weld interface movement minimalization of tailor welded blanks from DP600 and BH220 materials by optimization of blankholder forces [9, 10].

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FSW Numerical Simulation of Aluminium Plates by SYSWELD - Part II

References [1] CHEN, C.M., KOVACEVIC, R.: Finite element modeling of friction stir welding - thermal and thermomechanical analysis, International Journal of Machine Tools & Manufacture, Vol. 43, 2003, pp. 1319-1326, ISSN 0890-6955, http://www.sciencedirect.com/science/article/pii/S0890695503001585 [2] Jančo, R., Écsi, L., Élesztős, P.: FSW Numerical Simulation of Aluminium Plates by Sysweld - Part I. Strojnícky časopis - Journal of Mechanical Engineering, Vol., 66, No. 1, pp. 47-52., 2016, ISSN 0039-2472, from doi: 10

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FSW Numerical Simulation of Aluminium Plates by Sysweld - Part I

References [1] CHEN, C.M., KOVACEVIC, R.: Finite element modeling of friction stir welding - thermal and thermomechanical analysis, International Journal of Machine Tools & Manufacture , Vol. 43 , 2003, pp. 1319-1326, ISSN 0890-6955, http://www.sciencedirect.com/science/article/pii/S0890695503001585 [2] FRIGAARD, Ø., GRONG, Ø., MIDLING, O.T.: A Process Model for Friction Stir Welding of Age Hardening Aluminium Alloys, Metallurgical and Materials Transactions A , Vol. 32A , 2001, pp. 1189-1200 [3] FEULVARCH, E., ROBIN, V., BOITOUT, F

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Numerical Simulation of Heat Transfer Behavior of Dissimilar AA5052-AA6061 Plates in Fiction Stir Welding: An Experimental Validation

”, Journal of Manufacturing Science and Engineering 125, pp. 138 – 145, 2003 . DOI: 10.1115/1.1537741 [6] Song, M., Kovacevic, R. “Thermal modeling of friction stir welding in a moving co-ordinate system and its validation”, International Journal of Machine Tools and Manufacture 43, pp. 605 – 615, 2003 . DOI: 10.1016/S0890-6955(03)00022-1 [7] Nandan, R., Roy, G.G., Debroy, T. “Numerical simulation of 3D heat transfer and plastic flow during friction stir welding”, Metallurgical and materials transactions A. 37a, 1247 – 1259, 2006 . DOI: 10.1179/174329306X

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Influence of Bypass on Thermo-Hydraulics of VVER 440 Fuel Assembly

Abstract

The paper deals with CFD modelling and simulation of coolant flow within the nuclear reactor VVER 440 fuel assembly. The influence of coolant flow in bypass on the temperature distribution at the outlet of the fuel assembly and pressure drop was investigated. Only steady-state analyses were performed. Boundary conditions are based on operating conditions. ANSYS CFX is chosen as the main CFD software tool, where all analyses are performed.

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