15 research outputs found
Overview of Optical Digital Measuring Challenges and Technologies in Laser Welded Components in EV Battery Module Design and Manufacturing
Ensuring the precision and repeatability of component assembly in the
production of electric vehicle (EV) battery modules requires fast and
accurate measuring methods. The durability of EV battery packs depends
on the quality of welded connections, therefore exact positioning of the
module components is critical for ensuring safety in exploitation.
Laser welding is a non-contact process capable of welding dissimilar
materials with high precision, for that reason it has become the
preferred joining method in battery production. In high volume
manufacturing, one of the main production challenges is reducing the
time required for assessment of dimensional and geometrical accuracy
prior to joining. This paper reviews the challenges of EV battery design
and manufacturing and discusses commercially available scanner-based
measurement systems suitable for fabrication of battery pack components.
Versatility of novel metrological systems creates new opportunities for
increasing the production speed, quality and safety of EV battery
modules</p
Meede 1.1 raames programmperioodil 2004-2006 projekte ellu viinud organisatsioonide programmi administreerimise protsessile antava hinnangu uuring
Uuringu eesmärk on selgitada välja meede 1.1 raames projekte ellu viinud organisatsioonide hinnang programmi administreerimise protsessile. Uuringu raames on oluline välja selgitada programmperioodi 2004-2006 projektide rakendamisel esinenud raskused ja probleemid, et arvestada neid uue programmperioodi planeerimisel
Effect of Optical Parameters on Fiber Laser Welding of Ultra High Strength Steels and Weld Mechanical Properties at Sub-zero Temperatures
Effects of Sealing Run Welding with Defocused Laser Beam on the Quality of T-joint Fillet Weld
High Power Fiber Laser Welding of Single Sided T-Joint on Shipbuilding Steel with Different Processing Setups
Laser welding of thick plates in production environments is one of the main applications of high power lasers; however, the process has certain limitations. The small spot size of the focused beam produces welds with high depth-to-width aspect ratio but at times fails to provide sufficient reinforcement in certain applications because of poor gap bridging ability. The results of welding shipbuilding steel AH36 with thickness of 8 mm as a single-sided T-joint using a 10 kW fiber laser are presented and discussed in this research paper. Three optical setups with process fibers of 200 µm, 300 µm and 600 µm core diameters were used to study the possibilities and limitations set by the beam delivery system. The main parameters studied were beam inclination angle, beam offset from the joint plane and focal point position. Full penetration joints were produced and the geometry of the welds was examined. It was found that process fibers with smaller core diameter produce deeper penetration but suffer from sensitivity to beam positioning deviation. Larger fibers are less sensitive and produce wider welds but have, in turn, lower penetration at equivalent power levels
High Power Fiber Laser Welding of Single Sided T-Joint on Shipbuilding Steel with Different Processing Setups
Laser welding of thick plates in production environments is one of the main applications of high power lasers; however, the process has certain limitations. The small spot size of the focused beam produces welds with high depth-to-width aspect ratio but at times fails to provide sufficient reinforcement in certain applications because of poor gap bridging ability. The results of welding shipbuilding steel AH36 with thickness of 8 mm as a single-sided T-joint using a 10 kW fiber laser are presented and discussed in this research paper. Three optical setups with process fibers of 200 µm, 300 µm and 600 µm core diameters were used to study the possibilities and limitations set by the beam delivery system. The main parameters studied were beam inclination angle, beam offset from the joint plane and focal point position. Full penetration joints were produced and the geometry of the welds was examined. It was found that process fibers with smaller core diameter produce deeper penetration but suffer from sensitivity to beam positioning deviation. Larger fibers are less sensitive and produce wider welds but have, in turn, lower penetration at equivalent power levels