Melt ejection during single pulse drilling and percussion drilling of micro holes in stainless steel and nickel-based superalloy by pulsed Nd:yag laser radiation

Proceedings of SPIE - The International Society for Optical Engineering

Volumn 5662, Issue , 2004, Pages 609-615

  Trippe, L ^a   Willach, J ^a   Kreutz, E W ^a,b   Schulz, W ^b   Petereit, J ^a   Kaierle, S ^b   Poprawe, R ^a,b  

^a RWTH AACHEN UNIVERSITY   (Germany)

^b FRAUNHOFER INSTITUTE FOR LASER TECHNOLOGY   (Germany)

Author keywords

Closure; Heat transfer; High speed photography; Melt expulsion; Percussion drilling; Recast; Single pulse drilling; Vapourisation

Indexed keywords

COMPUTER SIMULATION; DRILLING; HEAT TRANSFER; HIGH SPEED PHOTOGRAPHY; LASER BEAM EFFECTS; MATHEMATICAL MODELS; MELTING; NEODYMIUM LASERS; NICKEL ALLOYS; NUMERICAL ANALYSIS; OPTICAL MICROSCOPY; REFLECTION; STAINLESS STEEL; SUPERALLOYS; VAPORIZATION; YTTRIUM COMPOUNDS;

CLOSURE; MELT EXPULSION; PERCUSSION DRILLING; RECAST; SINGLE PULSE DRILLING;

LASER PULSES;

EID: 20344374732     PISSN: 0277786X     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1117/12.596578     Document Type: Conference Paper

References (5)

1. J. Michel, S. Pfeiffer, W. Schulz, M. Niessen, V. Kostrykin, C. Maier: Proc. Sec. Int. WLT-Conf. Lasers in Manufacturing, Munich, 2003, pp. 321
2. W. Schulz, V. Kostrykin, H. Zefferer, D. Petring, R. Poprawe: Int. J. Heat and Mass Transfer, 40 12, 1997, pp. 2913.
3. th Int. Conf. on Laser Ablation COLA, Crete, 2003, Appl. Phys. A (accepted for publication)
4. J. Willach, PhD thesis, RWTH Aachen, in preparation.
5. J. Crank: Free and moving boundaries problems, Oxford University Press, Oxford, 1984.