Ralf Hellmann

According to our database, Ralf Hellmann authored at least 16 papers between 2012 and 2022.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2022

Image Processing Algorithm for In Situ Monitoring Fiber Laser Remote Cutting by a High-Speed Camera.

Max Schleier, Benedikt Adelmann, Cemal Esen, Ralf Hellmann

Sensors, 2022

Edge effects in radial porosity profiles from CT measurements and melt pool signal intensities for laser powder bed fusion.

Jorrit Voigt, Thomas Bock, Uwe Hilpert, Ralf Hellmann, Michael Möckel

CoRR, 2022

2021

Deep UV Formation of Long-Term Stable Optical Bragg Gratings in Epoxy Waveguides and Their Biomedical Sensing Potentials.

Steffen Hessler, Marieke Rüth, Horst-Dieter Lemke, Bernhard Schmauss, Ralf Hellmann

Sensors, 2021

Laser Cut Interruption Detection from Small Images by Using Convolutional Neural Network.

Benedikt Adelmann, Max Schleier, Ralf Hellmann

Sensors, 2021

Simultaneous Burr and Cut Interruption Detection during Laser Cutting with Neural Networks.

Benedikt Adelmann, Ralf Hellmann

Sensors, 2021

2020

Microstructure-Based Fiber-To-Chip Coupling of Polymer Planar Bragg Gratings for Harsh Environment Applications.

Stefan Kefer, Theresia Sauer, Steffen Hessler, Michael Kaloudis, Ralf Hellmann

Sensors, 2020

2019

Multipurpose Polymer Bragg Grating-Based Optomechanical Sensor Pad.

Steffen Hessler, Patrick Bott, Stefan Kefer, Bernhard Schmauss, Ralf Hellmann

Sensors, 2019

Optical Sensor for Real-Time Detection of Trichlorofluoromethane.

Maiko Girschikofsky, Dimitrij Ryvlin, Siegfried R. Waldvogel, Ralf Hellmann

Sensors, 2019

2018

Investigation on shear and tensile strength of laser welded electrical sheet stacks.

Benedikt Adelmann, Christian Lutz, Ralf Hellmann

Proceedings of the 14th IEEE International Conference on Automation Science and Engineering, 2018

2017

UV-Writing of a Superstructure Waveguide Bragg Grating in a Planar Polymer Substrate.

Manuel Rosenberger, Bernhard Schmauss, Ralf Hellmann

Sensors, 2017

Waveguide Bragg Gratings in Ormocer^®s for Temperature Sensing.

Maiko Girschikofsky, Manuel Rosenberger, Michael Förthner, Mathias Rommel, Lothar Frey, Ralf Hellmann

Sensors, 2017

2016

Towards 1-component Bragg-grating based shape sensing.

Hendrikje Pauer, Manuel Rosenberger, Maiko Girschikofsky, Ralf Hellmann, Wilderich Tuschmann, Heinz Wörn

Proceedings of the 19th International Conference on Information Fusion, 2016

2015

Simultaneous 2D Strain Sensing Using Polymer Planar Bragg Gratings.

Manuel Rosenberger, Waltraud Eisenbeil, Bernhard Schmauss, Ralf Hellmann

Sensors, 2015

2014

Characterization of Laser Beam Shaping Optics Based on Their Ablation Geometry of Thin Films.

Stefan Rung, Johannes Barth, Ralf Hellmann

Micromachines, 2014

Micromachining of AlN and Al₂O₃ Using Fiber Laser.

Florian Preusch, Benedikt Adelmann, Ralf Hellmann

Micromachines, 2014

2012

Highly Sensitive Detection of Naphthalene in Solvent Vapor Using a Functionalized PBG Refractive Index Sensor.

Maiko Girschikofsky, Manuel Rosenberger, Stefan Belle, Malte Brutschy, Siegfried R. Waldvogel, Ralf Hellmann

Sensors, 2012