In this thesis, several machining strategies to remove axially symmetric form error with small wavelength by Hydrodynamic Polishing process (abbreviated as HDP) were proposed. Three strategies were proposed progressively in the study so as to remove axially symmetric form error with small wavelength. The first and second tactics were based on a basic algorithm, say, directly solving of a set of simultaneous equations. In the first strategy, a set of simultaneous equations was constructed by relating the total machining action of each dwelling point to the corresponding initial error. Subsequently, a set of dwelling time was obtained by directly solving the simultaneous equations. The second strategy evaluates solutions in a similar way like the first one but more restrictions were concerned in solution evaluation. The third strategy is an optimal based method. A set of dwelling time was obtained by minimizing an objective function with given constraints. A series of computer simulations were conducted to estimate the residual error and examine the validity of the strategies. From the computer simulation, the first and second strategies were confronted with negative-time problem, so that merely limited improving of form precision was obtained. The proposed optimal strategy was shown to have high potential for improving the machining precision by the HDP process. Based on the proposed strategies, a better form precision of the work surface with small wavelength can be obtained.

Envisagé d'un point de vue qualitatif, le choix de la réparation intéresse peu la doctrine française, priorité étant donnée aux difficultés relatives à l'étendue, au quantum, de la réparation. A l'exemple du thème du coût de la réparation ou encore, de la question de la réparation indirecte, qui mènent à porter la focale sur les mesures agissant sur la source du préjudice ou tendant à financer la réparation en nature de celui-ci, nombre de problèmes afférents au choix de l'aspect de la réparation sont injustement délaissés. Le constat apparaît d'autant plus regrettable que les enjeux, qui ne se limitent pas à la nécessité de préserver l'intérêt de la victime, sont souvent d'une importance majeure. Riche, complexe, la question de la détermination de la forme de la réparation, qui place naturellement le juge au centre de la réflexion, peut être appréhendée sous deux angles distincts articulant chacun théorie et pratique : celui du choix d'une mesure effectivement apte, de par sa forme, à réparer ; celui du choix de la meilleure mesure, soit, ici, de la mesure qualitativement la plus adaptée. / When examined from a qualitative standpoint, French doctrine places a priority on issues relative to the scope and quantum of compensation, and has little, if anything, to say about the form of compensation. Several issues affecting how to choose the exact form or type of compensation, such as questions involving the cost of compensation or the possibility of indirect compensation, which would bring into focus measures affecting the origin of the prejudice or tending to support damages in kind, are wrongly neglected. This finding appears all the more regrettable when it is taken into consideration that the issues surrounding a settlement, not limited merely to the need to preserve the interests of the victim, are often of major importance. Rich and complex, the question of how to determine the form of compensation, which obviously places the judge at the center of such the thinking process, can be understood from two distinct perspectives, each articulated by its own theory and practice : the choice of a measure which, by form, is effectively capable of compensating; the choice of the best measure, one that is the most adapted in qualitative terms.