Publications by Moustapha Hafez

Study of the beam path distortion profiles generated by a two-axis tilt single-mirror laser scanner

René Salathé, Thomas Sidler, Moustapha Hafez

Beam distortion profiles are studied for scanning devices that have a single mirror with two rotational degrees of freedom (DOF), also named tip/tilt scanners. The case of a fast steering scanner used for high power material processing applications is stud ...

2003

Compact multisensor laser scanning head for processing and monitoring microspot welding

René Salathé, Thomas Sidler, Moustapha Hafez

In order to improve the reliability of micro-spot welding of metal parts in production such as e.g. in electron guns for TV picture tubes, real-time information about the evolution of the welding process should be available to allow on-line modification of ...

SPIE-Int. Soc. Opt. Eng2000

Design, simulations and experimental investigations of a compact single mirror tip/tilt laser scanner

René Salathé, Thomas Sidler, Moustapha Hafez

In this paper, we present the design aspects of a compact tip/tilt, fast steering laser scanner. The scanner is composed of one single mirror with a large active area, driven by linear electromagnetic actuators. The suspension of the mirror is based on a c ...

2000

Local annealing of shape memory alloys using laser scanning and computer vision

René Salathé, Yves Bellouard, Reymond Clavel, Thomas Sidler, Moustapha Hafez

A complete set-up for local annealing of Shape Memory Alloys (SMA) is proposed. Such alloys, when plastically deformed at a given low temperature, have the ability to recover a previously memorised shape simply by heating up to a higher temperature. They f ...

2000

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Moustapha Hafez

Study of the beam path distortion profiles generated by a two-axis tilt single-mirror laser scanner

Compact fast-steering tip/tilt laser scanner for high power material processing applications

Compact multisensor laser scanning head for processing and monitoring microspot welding

Design, simulations and experimental investigations of a compact single mirror tip/tilt laser scanner

Local annealing of shape memory alloys using laser scanning and computer vision

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Chat with Graph Search

Study of the beam path distortion profiles generated by a two-axis tilt single-mirror laser scanner

Local annealing of shape memory alloys using laser scanning and computer vision

Compact multisensor laser scanning head for processing and monitoring microspot welding

Design, simulations and experimental investigations of a compact single mirror tip/tilt laser scanner

Compact fast-steering tip/tilt laser scanner for high power material processing applications