On the laser beam cutting of metallic hollow sphere structures

H. Riegel; J. Fruhstuck; M. Merkel; R. Winkler; A. Öchsner

doi:10.1117/12.2007378

22 February 2013 On the laser beam cutting of metallic hollow sphere structures

H. Riegel, J. Fruhstuck, M. Merkel, R. Winkler, A. Öchsner

Proceedings Volume 8603, High-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications II; 86030V (2013) https://doi.org/10.1117/12.2007378
Event: SPIE LASE, 2013, San Francisco, California, United States

Abstract

Metal hollow sphere structures (MHSS) represent a group of advanced composite materials. A high geometric reproducibility leads to relatively constant mechanical and physical properties. Therefore MHSS combine the advantages of cellular metals without a big scattering of the material properties. Several joining technologies can be used to assemble single metallic hollow spheres to a interdependent structure like sintering, soldering and adhering. This allows adjusting of variable macroscopic attitudes. A cutting process for MHSS needs to reflect the special characteristic of the composite material. In this paper laser beam cutting is presented as an efficient technology. The small amount of heat being involved during the process results in a small heat affected zone. All investigations were done with MHSS having different macroscopic dimensions (length, width, thickness, joining technology). The experimental work was done by a CO₂-laser. The cut depth is governed by the heat input per unit length and the MHSS density. Finite element analysis was used to predict heat flux and temperature level for different geometric parameters of the spheres (diameter, wall thickness). The numerical simulation allows a detailed analysis of the physical process in the zone that is influenced by the laser beam and which can hardly be analysed by measuring technique. The models for the static and transient finite element analysis consider heat conduction and convection.

Citation Download Citation

H. Riegel, J. Fruhstuck, M. Merkel, R. Winkler, and A. Öchsner "On the laser beam cutting of metallic hollow sphere structures", Proc. SPIE 8603, High-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications II, 86030V (22 February 2013); https://doi.org/10.1117/12.2007378

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available