Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Almir Heralic is active.

Publication


Featured researches published by Almir Heralic.


IFAC Proceedings Volumes | 2008

Control Design for Automation of Robotized Laser Metal-wire Deposition

Almir Heralic; Anna-Karin Christiansson; Kjell Hurtig; Mattias Ottosson; Bengt Lennartson

In this paper a novel approach towards automation of robotized laser metal-wire deposition (RLMwD) is described. The RLMwD technique is being developed at University West in cooperation with Swedis ...


conference on automation science and engineering | 2015

Automation of a laser welding system for additive manufacturing

Petter Hagqvist; Anna-Karin Christiansson; Almir Heralic

This paper presents the benefits and challenges of using a standard robotised laser welding cell for additive manufacturing (AM). Additive manufacturing, sometimes denoted 3D-printing or rapid prototyping, has lately met strong interest in several areas of society, and a variety of technologies and materials have been in focus. The current paper summarises automation efforts for AM of advanced aero engine components using high power laser with welding optics as power source for melting metal wire and using an industrial robot for obtaining a 3-dimensional feature shape. The challenges are related to the process itself encountering high and repeated temperatures with melting and solidification of the metal as the main players. The major research solutions discussed in this paper are related to automation issues for obtaining a stable process and to have control of the temperatures and temperature changes that the metals encounter during the process. The solutions are successfully implemented in an industrial laser welding cell.


International Congress on Applications of Lasers & Electro-Optics | 2011

Automatic in-process control of laser metal-wire deposition based on sensor feedback

Almir Heralic; Anna-Karin Christiansson

This paper describes alasermetaldepositionsystem that isbasedon robotizedlaserwelding andwirefiller material. The system has been found suitable for the manufacture of simple but large shapes with high metallurgical requirements such as bosses or flanges found on aero engine components. Several benefits have been identified with the usage ofwirefiller compared to powderized feedstock, such as betterprocessefficiency, higherdepositionrates, and cleaner working environment. Thewirebaseddepositionprocessis however sensitive to disturbances and thus requires continuous monitoring and adjustments.Inthis work a 3D scanning system is described forautomaticin-processcontrolof thedeposition. The goal is to obtain a flat surface for each deposited layerinorder to ensure stabledeposition. The deviationsinthe layer height are compensated by controlling thewirefeed rate. The system is tested throughdepositionof small cylindrical bosses and the results show that the proposedcontrolapproach is suitable forautomaticdepositionof such structures. The material consideredinthis paper is Ti-6Al-4V deposited on plates of same material. The paper presents the equipment and thecontrolstrategy and discusses practical issues regarding thesensorused.


Optics and Lasers in Engineering | 2012

Height control of laser metal-wire deposition based on iterative learning control and 3D scanning

Almir Heralic; Anna-Karin Christiansson; Bengt Lennartson


Optics and Lasers in Engineering | 2010

Increased stability in laser metal wire deposition through feedback from optical measurements

Almir Heralic; Anna-Karin Christiansson; Mattias Ottosson; Bengt Lennartson


Mechatronics | 2015

Resistance based iterative learning control of additive manufacturing with wire

Petter Hagqvist; Almir Heralic; Anna-Karin Christiansson; Bengt Lennartson


Optics and Lasers in Engineering | 2014

Resistance measurements for control of laser metal wire deposition

Petter Hagqvist; Almir Heralic; Anna-Karin Christiansson; Bengt Lennartson


Archive | 2008

Automation of a robotised metal deposition system using laser melting of wire

Anna-Karin Christiansson; Fredrik Danielsson; Almir Heralic; Mattias Ottosson; Kjell Hurtig


World Conference on Titanium : 16/08/2015 - 20/08/2015 | 2015

Modeling and Experimental Measurement with Synchrotron Radiation of Residual Stresses in Laser Metal Deposited Ti-6Al-4V

Andreas Lundbäck; Robert Pederson; Magnus Hörnqvist Colliander; Craig A. Brice; Axel Steuwer; Almir Heralic; T. Buslaps; Lars-Erik Lindgren


international conference on control applications | 2007

Automation of robotized laser metal-wire deposition

Almir Heralic; Anna-Karin Christiansson; Mattias Ottosson; Kjell Hurtig; Bengt Lennartson

Collaboration


Dive into the Almir Heralic's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar

Bengt Lennartson

Chalmers University of Technology

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Kjell Hurtig

University College West

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Andreas Lundbäck

Luleå University of Technology

View shared research outputs
Top Co-Authors

Avatar

Lars-Erik Lindgren

Luleå University of Technology

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Axel Steuwer

Nelson Mandela Metropolitan University

View shared research outputs
Top Co-Authors

Avatar

T. Buslaps

European Synchrotron Radiation Facility

View shared research outputs
Researchain Logo
Decentralizing Knowledge