PhD Researcher in Advanced Laser Metrology

6 dagen geleden

Enschede, Overijssel, Nederland University of Twente Voltijd

Position Overview

We are seeking a dedicated PhD researcher to enhance our dynamic and interdisciplinary research group, focusing on the observation and analysis of fundamental physical phenomena during laser-material interactions. The goal is to refine laser-material processing techniques for advanced manufacturing applications, such as laser cladding.

Research Context

High power laser systems are increasingly utilized not only for their commercial availability but also for their capacity to deliver concentrated energy to specific areas, enabling the achievement of desired material characteristics. This photonics-driven manufacturing approach encompasses various processes, including but not limited to laser cladding, welding, implantation, ablation, and etching. Large-scale metal additive manufacturing, particularly laser cladding, is a well-established method for cost-effectively repairing or regenerating damaged industrial components across multiple sectors, including energy, transportation, waste management, construction, and manufacturing. Compared to traditional coating methods such as plasma and thermal spray coatings, laser cladding offers superior metallurgical bonding, precision, and minimal distortion, providing significant sustainability advantages in terms of resource efficiency and product longevity.

Your Research Challenge

As a PhD candidate, you will explore Laser-based Direct Energy Deposition (DED), an additive manufacturing technique that involves melting feedstock on a substrate, resulting in rapid cooling rates and complex material properties at elevated temperatures. The quality of the cladded product is largely influenced by parameters such as temperature, thermal gradients, and the geometry of the melt pool. While measurement techniques for temperature, clad geometry, pressure, stress, and flow rates can be challenging at lower temperatures or during post-processing, gaining real-time insights into the melt pool at high temperatures remains a significant challenge. You will develop a more precise, real-time multi-sensor monitoring system to characterize the melt pool both spatially and temporally, as well as spectro-thermally. To enhance sensor accuracy and integrate various sensor modalities, you will create algorithms for sensor fusion, leveraging Artificial Intelligence and Machine Learning concepts to optimize data processing and decision-making for consistent, high-quality production of metallic components using laser-based additive manufacturing. This sensing solution will be adaptable across different scales of time and length.

Qualifications

  • A Master's degree with distinction (or international equivalent) in Optical Engineering, Applied Physics, Photonics, Materials Science, or a related field.
  • Experience in real-time imaging and/or spectroscopy is essential.
  • Familiarity with sensor fusion and AI/ML concepts is preferred.
  • Knowledge of laser-material processing fundamentals and applied techniques is advantageous.
  • Experience with surface characterization technologies (e.g., SEM, EDX, AFM) is a plus.
  • Ability to conduct experimental research in a laboratory setting.
  • Strong analytical skills and effective communication abilities, both written and verbal.
  • Proficiency in English is required; candidates from non-English speaking countries must demonstrate proficiency through IELTS or TOEFL scores.
  • We value independence and responsibility while fostering collaboration with colleagues and researchers.

Additional Information

This position is exclusively open to female scientists as part of the University of Twente's initiative to enhance female representation in its faculty and promote a diverse and inclusive research environment.

What We Offer

  • A four-year full-time PhD position.
  • A stimulating and modern research environment with access to world-class facilities.
  • Competitive starting salary with annual increases.
  • Annual holiday allowance and year-end bonus.
  • A robust pension scheme.
  • A minimum of 40 leave days for full-time employment.
  • Access to a training program through the Twente Graduate School, tailored to your educational and supervisory needs.

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