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| 1 | Mechanical and Metallurgical Characterization of HSLA X70Welded Pipeline Steel Subjected to Successive Repairs显示文摘The aim of this work is to study the influence of successive weld repairs on the microstructure and the mechanical behavior of the heat-affected zone(HAZ) of an HSLA X70 steel. Detailed microstructural examination combined to grain size measurement showed that beyond the second weld repair, the microstructure of the HAZ undergoes significant change in the grain morphology and grain growth. The results of the X-ray diffraction analyzed using MAUD software indicated an increase in the crystallite size and a decrease in the dislocation density according to the number of weld repair operations. Consequently, a loss of mechanical properties, namely the yield strength and the toughness with the number of weld repairs, was recorded. Beyond the second weld repair operation, the properties of the welded joint do not fulfill the standards applied in piping industry. | Bouzid Maamache Mabrouk Bouabdallah Abdelhalim Brahimi Youcef Yahmi Billel Cheniti Brahim Mehdi | 2016 | Acta Metallurgica Sinica(English Letters)2016，29，6： | 2 |
| 2 | Comment on 'Exact wave function of a harmonic plus an inverse harmonic potential with timedependent mass and frequency'显示文摘 | Maamache M | 2000 | Phys Rev A2000，61，02： | 1 |
| 3 | Comment on 'Wave functions of a time-dependent harmonic oscillator in a static magnetic field'显示文摘 | Maamache M Bounames A Ferkous N | 2006 | Phys Rev A2006，73，01： | 1 |
| 4 | Comment on ' Schr(o)dinger equation for the time-dependent linear potential'显示文摘 | H.Bekka r F.Benamira Maamache | | 0，，： | 1 |
| 5 | Ermakov systems, exact solution, and geometrical angles and phases 显示文摘 | Maamache M | 1995 | Phys Rev A1995，52，2： | 1 |
| 6 | Comment on 'Schrodinger equation for the time-dependent linear potential'显示文摘 | H Bekkar F Benamira Maamache | 2003 | Phys Rev A2003，68，01： | 1 |
| 7 | The antimicrobial effect of silicon nanowires decorated with silver and copper nanoparticles显示文摘 | Ouarda Fellahi Rupak K Sarma Manash R Das Ratul Saikia Lionel Marcon Yannick Coffinier Toufik Hadjersi Mustapha Maamache Rabah Boukherroub | 2013 | Nanotechnology2013，，49： | 1 |
| 8 | A new experimental way for the monitoring of the real/equivalent inservice- time of double base rocket propellant by coupling VST and PCA显示文摘The assessment of the real in-service-time(RIST)and the equivalent in-service-time(EIST)of double base rocket propellants(DBRPs)is of utmost importance for the safe storage and use of weapon systems as well as the efficiency of the accelerated aging plans.In this work,four DBRPs with similar chemical composition and different natural aging have been artificially aged at T?338.65 K for 4 months with sampling every 30 days.The unaged and artificially aged samples have been investigated by vacuum stability test(VST)at five isothermal temperatures(T?333.15 K,343.15 K,353.15 K,363.15 K,and 373.15 K).The volume of the evolved gases in VST was found to decrease with natural/artificial aging.Furthermore,the VST data were treated and subjected to principal component analysis(PCA).The results showed excellent discrimination of the DBRP samples according to their stability thermal properties.Most of the variance was described by the first principal component(PC1)whose scores were linearly correlated with the natural aging durations when PCA is applied on VST data obtained at T?363.15 K.In light of the obtained results,a new experimental way for the estimation of the real/equivalent IST was proposed,which takes into account the impact of the natural aging of the sample.The approach predicts successfully the RIST of two similar DBRPs with a relative deviation of less than 2%.At the specific heating temperature T?338.65 K,the developed model provides more conceivable EIST values,with asymptotic behavior against artificial aging duration evolution,thus overcoming some shortcomings of the common generalized van’t Hoff formula(GvH). | Salim Chelouche Djalal Trache Ilyas Maamache Ahmed Fouzi Tarchoun Kamel Khimeche Abderrahmane Mezroua | 2021 | Defence Technology(防务技术)2021，17，2： | 1 |
| 9 | Evolution of Gaussian wave Packet and Nonadiabatic Geometrical Phase for the Time - Dependent Singular Oscillator显示文摘 | Maamache M Bekkar H | 2003 | J Phys A2003，36，23： | 1 |
| 10 | Comment on 'Solution of the Schrodinger Equation for the Time- Dependent Linear Potential' 显示文摘 | Bekkar H Benamira F Maamache M | 2003 | Phys Rev A2003，68，01： | 1 |
| 11 | Solution of the Generalized Dirac Equation in a Time - Dependent Linear Potential: Relativistic Geometric Amplitude factor 显示文摘 | Maamache M Lakehal H | 2004 | Euro Physics Letters2004，67，5： | 1 |
| 12 | Generalized Coherent States of a Particle in a Time-Dependent Linear Potential显示文摘我们发源,与一个不变的操作员方法和单一的转变途径, Schr ? 有线性潜力拥有的一个时间依赖者的 dinger 方程 shape-preseving 波浪包状态 | 的无限的绳,(t) 有古典运动。不变的特征值光谱的质的性质(分离或连续) 为一个泛音振荡器的频率的不同价值独立被描述。它也被看那,为一个分离特征值系列,状态 | , n (t) 能从协调州的 | 被获得, 0 (t) 。 | L. Krache | 2009 | Chinese Physics Letters2009，26，7： | 1 |
| 13 | Influence of crystalline damage on morphological and optical properties of silicon nanowires显示文摘 | Fellahi O Hadiersi T Maamache M | 2010 | Optical Mater2010，32，： | 1 |
| 14 | Unitary Equivalence and Phase Properties of the Quantum Parametric and Generalized Harmonic Oscillators 显示文摘 | Maamache M Provost J P Vallee G | 1999 | Phys Rev A1999，59，3： | 1 |
| 15 | Quantum-classical correspondence for the inverted oscillator显示文摘While quantum-classical correspondence for a system is a very fundamental problem in modern physics,the understanding of its mechanism is often elusive,so the methods used and the results of detailed theoretical analysis have been accompanied by active debate.In this study,the differences and similarities between quantum and classical behavior for an inverted oscillator have been analyzed based on the description of a complete generalized Airy function-type quantum wave solution.The inverted oscillator model plays an important role in several branches of cosmology and particle physics.The quantum wave packet of the system is composed of many sub-packets that are localized at different positions with regular intervals between them.It is shown from illustrations of the probability density that,although the quantum trajectory of the wave propagation is somewhat different from the corresponding classical one,the difference becomes relatively small when the classical excitation is sufficiently high.We have confirmed that a quantum wave packet moving along a positive or negative direction accelerates over time like a classical wave.From these main interpretations and others in the text,we conclude that our theory exquisitely illustrates quantum and classical correspondence for the system,which is a crucial concept in quantum mechanics. | Mustapha Maamache Jeong Ryeol Choi | 2017 | Chinese Physics C2017，41，11： | 0 |
| 16 | Nonlinear description of Yang-Mills cosmology: cosmic inflation and the accompanying Hannay's angle显示文摘Hannay's angle is a classical analogue of the 'geometrical phase factor' found by Berry in his research on the quantum adiabatic theorem. This classical analogue is defined if closed curves of constant action variables return to the same curves in phase space after an adaibatic evolution. Adiabatic evolution of Yang-Mills cosmology, which is described by a time-dependent quartic oscillator, is investigated. Phase properties of the Yang-Mills fields are analyzed and the corresponding Hannay's angle is derived from a rigorous evaluation. The obtained Hannay's angle shift is represented in terms of several observable parameters associated with such an angle shift. The time evolution of Hannay's angle in Yang-Mills cosmology is examined from an illustration plotted on the basis of numerical evaluation,and its physical nature is addressed. Hannay's angle, together with its quantum counterpart Berry's phase, plays a pivotal role in conceptual understanding of several cosmological problems and indeed can be used as a supplementary probe for cosmic inflation. | Yacine Bouguerra Mustapha Maamache Jeong Ryeol Choi | 2017 | Chinese Physics C2017，41，6： | 0 |
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