PhD Researcher in Advanced Laser Metrology

2 maanden 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 applicable to advanced manufacturing, such as laser cladding.

Research Context

High-power laser systems are increasingly utilized not only for their commercial viability but also for their capacity to deliver concentrated energy to specific areas with adjustable energy rates, thus achieving targeted 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, has become a well-established method for cost-effective repair and regeneration of industrial components across multiple sectors, including energy, transportation, waste management, construction, and manufacturing. Compared to traditional coating methods such as plasma or thermal spray coatings and arc welding, laser cladding offers superior metallurgical bonding, precision, and minimal distortion, resulting in significant sustainability advantages in terms of resource efficiency and product longevity.

Your Research Challenge

As a PhD candidate, you will investigate Laser-based Direct Energy Deposition (DED), an additive manufacturing method that involves melting feedstock onto a substrate, leading to rapid cooling rates, complex material properties at elevated temperatures, and differential shrinkage. The quality of the cladded product is largely influenced by parameters such as temperature, thermal gradients, and the geometry of the melt pool. While traditional measurement techniques can be inadequate at lower temperatures or during post-processing, gaining real-time insights into the melt pool at high temperatures presents significant challenges. You will develop a more precise, real-time (multi-) sensor-based monitoring system to characterize the melt pool both spatially and temporally, as well as spectro-thermally. To enhance sensor accuracy and leverage various sensor modalities, you will create algorithms for sensor fusion utilizing Artificial Intelligence and Machine Learning concepts, aimed at optimizing strategies and providing real-time feedback for the consistent, high-quality production of metallic components through laser-based additive manufacturing. This sensing solution will be adaptable across different scales of time and length.

Candidate Profile

  • A Master's degree, preferably with distinction (or 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 concepts in Artificial Intelligence/Machine Learning/Deep Learning is advantageous.
  • Knowledge of laser-material processing fundamentals and applied techniques is beneficial.
  • Experience with various surface characterization technologies, such as SEM, EDX, AFM, etc., is a plus.
  • Ability to conduct experimental research in a laboratory setting.
  • Strong analytical skills and a methodical mindset, along with excellent 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.

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

Our Offer

  • A four-year full-time PhD position.
  • A stimulating and modern research environment equipped with world-class facilities and exceptional mentorship to support your professional and personal development.
  • A competitive starting salary, with annual increases.
  • An annual holiday allowance and year-end bonus.
  • A robust pension scheme.
  • A minimum of 40 leave days for full-time employment.
  • A vibrant campus environment with numerous facilities for sports and activities.
  • A tailored training program as part of the Twente Graduate School, developed collaboratively with your supervisors.

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