Model of the final borehole geometry for helical laser drilling

被引：6

作者：

Kroschel, Alexander ^{[1
,2
]}

Michalowski, Andreas ^{[1
]}

Graf, Thomas ^{[3
]}

机构：

[1] Robert Bosch GmbH, Zentrum Forsch & Vorausentwicklung, Renningen, Germany

[2] Univ Stuttgart, Grad Sch Excellence Adv Mfg Engn GSaME, Stuttgart, Germany

[3] Univ Stuttgart, Inst Strahlwerkzeuge, Stuttgart, Germany

来源：

ADVANCED OPTICAL TECHNOLOGIES | 2018年 / 7卷 / 03期

关键词：

ablation threshold; helical drilling; laser materials processing; simulation; ultrafast lasers;

D O I：

10.1515/aot-2018-0006

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A model for predicting the borehole geometry for laser drilling is presented based on the calculation of a surface of constant absorbed fluence. It is applicable to helical drilling of through-holes with ultrashort laser pulses. The threshold fluence describing the borehole surface is fitted for best agreement with experimental data in the form of cross-sections of through-holes of different shapes and sizes in stainless steel samples. The fitted value is similar to ablation threshold fluence values reported for laser ablation models.

引用

页码：183 / 188

页数：6

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