Petr Homola and Roman Růžek
Laser Beam MicroDrilling Effect on Ti6Al4V Titanium Alloy Sheet Properties
784 - 790
2018
12
8
International Journal of Aerospace and Mechanical Engineering
https://publications.waset.org/pdf/10009330
https://publications.waset.org/vol/140
World Academy of Science, Engineering and Technology
Laser beam microdrilling (LBMD) is one of the most important noncontact machining processes of materials that are difficult to machine by means oeqf conventional machining methods used in various industries. The paper is focused on LBMD knockdown effect on Ti6Al4V (Grade 5) titanium alloy sheets properties. Two various process configurations were verified with a focus on laser damages in backstructure parts affected by the process. The effects of the LBMD on the material properties were assessed by means of tensile and fatigue tests and fracture surface analyses. Fatigue limit of LBMD configurations reached a significantly lower value between 15 and 30 of the static strength as compared to the reference raw material with 58 value. The farther backstructure configuration gives a twofold fatigue life as compared to the closer LBMD configuration at a given stress applied.
Open Science Index 140, 2018