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Statistical characterisation of end milling of AISI 52100 annealed bearing steel
Benghersallah, Mohieddine,Benchiheub, Slimane,Amirat, Abdelaziz Techno-Press 2018 Advances in materials research Vol.7 No.2
The present paper is a contribution in characterising end milling process of AISI 52100 ball bearing steel through statistical analyses of variance (ANOVA). The latter has been performed to identify the effect of the cutting parameters on the machined surface roughness and the cutting tool life. Wear measurements have been carried on multilayer coated carbide inserts and the respective surface roughness has been recorded. Taguchi's technique has been adapted to conduct the design experiments in terms of orthogonal arrays according to the cutting parameters (cutting speed, feed rate and depth of cut), the type of coating (TiN, TiCN, TiAlN) and lubricating condition. Regression analyses have conducted to the development of simplified empirical models that can be effectively used to predict surface roughness and tool wear in the present milling process.
Airy Wave Packet for a Particle in a Time-Dependent Linear Potential
Mounira Berrehail,Nadjet Benchiheub 한국물리학회 2017 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.70 No.2
We studied the quantum motion of a particle in the presence of a time-dependent linear potential by using an operator invariant that is quadratic in p and linear in x within the framework of the Lewis-Riesenfeld invariant. The special invariant operator in this work is demonstrated to be Hermitian operator that has an Airy wave packet as its eigenfunctions.