CAJ | 학술논문

应用分形几何学方法，研究了不同路径间距条件下的堆焊再制造层表面形貌，用表面分形维数对堆焊再制造层表面质量进行了表征。结果表明：堆焊再制造层表面在一定尺度范围内具有分形特性，分形维数很好地表征了材料表界面的粗糙和复杂、不规则程度，是一个能够反映出表面内禀特性的特征参数，可以用分形维数来表征堆焊再制造层的表面质量；不同路径间距条件下的堆焊再制造层表面分形维数不同，路径间距越接近理论最佳值，堆焊再制造层表面分形维数越大，表面质量也越高。该方法可为进一步研究堆焊再制造层表面质量，以及优化堆焊熔敷成形再制造工艺参数提供定量依据。
응용분형궤하학방법，연구료불동로경간거조건하적퇴한재제조층표면형모，용표면분형유수대퇴한재제조층표면질량진행료표정。결과표명：퇴한재제조층표면재일정척도범위내구유분형특성，분형유수흔호지표정료재료표계면적조조화복잡、불규칙정도，시일개능구반영출표면내품특성적특정삼수，가이용분형유수래표정퇴한재제조층적표면질량；불동로경간거조건하적퇴한재제조층표면분형유수불동，로경간거월접근이론최가치，퇴한재제조층표면분형유수월대，표면질량야월고。해방법가위진일보연구퇴한재제조층표면질량，이급우화퇴한용부성형재제조공예삼수제공정량의거。
Fractal geometry method is adopted to study surfacing remanufacturing layer’s surface morphol-ogy under different path spaces condition,and surface fractal dimension is used to quantitatively charac-terize the surface quality of surfacing remanufacturing layers in this paper.Results show that the surface of surfacing remanufacturing layer is a fractal structure during a fixed measure range.Fractal dimension characterizes the roughness,complexity and irregularity of material surface or interface very well,so it is a characteristic parameter which can reveal the internal characteristic of the surface,and can be used to characterize the surface quality of surfacing remanufacturing layer.The fractal dimensions are different of the layers’surface when the path spaces are different during the surfacing remanufacturing process.The more closing to the theory optimal value of the path space,the larger of the surface fractal dimension val-ue,the higher the surface quality is.This method can provide quantitative basis for further researching the surface quality of surfacing remanufacturing layers and optimizing the parameters of surfacing remanu-facturing process.