再制造产品性能调控中的基础科学问题

再制造产品性能优于原型新品，这是再制造必须坚持的质量标准，也是再制造必须正面回答却仍未得到回答的一个重大基础命题。本项目以重载发动机关键零件曲轴和缸盖为研究载体，针对涂覆层多元异质材料成形匹配设计不当的难题，研究再制造毛坯/涂敷层成形界面的“形、性”调控行为，阐述异质材料结合的微观机制，实现对再制造产品性能优于原型新品的材料学基础的揭示；针对涂覆层应力诱导缺陷演变规律把握不准的难题，阐述复杂应力状态下的涂覆层结构完整性演变规律，实现对再制造产品性能优于原型新品的力学基础的揭示；针对再制造产品全生命周期中庞大数据痕迹追踪不足、变化规律未得到挖掘提炼的难题，研究再制造产品全生命周期信息追踪与数据挖掘基础，建立再制造产品质量主控因子的表达模型，实现对再制造产品性能优于原型新品的信息学基础的揭示。最终实现用科学的语言阐述再制造产品性能优于原型新品本质规律的重大科学目的。

Not only is the standard that the qualities of remanufactured products are superior to the new products, but also it is an important basic proposition which must be solved by remanufacturing engineering. .The mechanism that remanufactured products possess superior properties will be proclaimed from the perspective of material science, mechanics and informatics, respectively.The target products of the project are crankshaft and cylinder head which are two key components of heavy load motor..In terms of materials science, the problem of materials compatibility and the micro adhesive mechanism of the heterogeneous material interface between remanufacturing semi-finished products/repairing layers composed of multiple elements during the process of the formation of the repairing layers will be researched, so that the forms and properties of the interfaces can be controlled..From the angle of mechanics, the problem of the evolution law of defects and structural integrity of repairing layers in complex stresses conditions, which are still uncertain to characterize, will be explored. .From the aspect of informatics, with the problem of the incomplete trace and the insufficient excavation of the change rule of the huge data which reflect the whole lifecycle of remanufactured products, the foundation of information tracking and data mining will be researched, and the model of themain control factor of remanufactured products will be established. .Ultimately, the important scientific purpose why the remanufactured products possess more excellent properties compared with new products will be attained, and the essential mechanism will be elaborated accurately and comprehensively in scientific ways.