Explanipedia

3-D-printed smart screw: functionalization during additive fabrication Open

Daniel Gräbner, Simon Dödtmann, Gerrit Dumstorff, Frieder Lucklum · 2018

Integrating sensors into machine parts is a necessary step for the development of smart or intelligent components. Sensors integrated into materials such as concrete, fiber compounds, or metals are already used to measure strain, temperatu…

Challenges and Opportunities of RFID Sensortags Integration by Fibre-Reinforced Plastic Components Production Open

Michael Brink, Frank Berkemeyer, Jan-Hendrik Ohlendorf, Gerrit Dumstorff, Klaus‐Dieter Thoben , et al. · 2018

In the past decade the use of Radio Frequency Identifcation (RFID) technology has become a substantial part in our daily live. Applications such as supply chain management, inventory tracking and access control has been influenced by this …

Simultaneous Measurement of Strain and Temperature with two Resistive Strain Gauges made from Different Materials Open

Daniel Gräbner, Gerrit Dumstorff, Walter Lang · 2018

We present a novel approach for the differentiation between temperature and strain influence on resistive strain gauges. Two strain gauges are placed in a nested shape. The strain gauges are made from different materials. Due to the differ…

Experimental and Numerical Investigations in Shallow Cut Grinding by Workpiece Integrated Infrared Thermopile Array Open

Marcel Reimers, Walter Lang, Gerrit Dumstorff · 2017

The purpose of our study is to investigate the heat distribution and the occurring temperatures during grinding. Therefore, we did both experimental and numerical investigations. In the first part, we present the integration of an infrared…

Measuring strain during a cylindrical grinding process using embedded sensors in a workpiece Open

Mridusmita Sarma, Florian Borchers, Gerrit Dumstorff, Carsten Heinzel, Walter Lang · 2017

This paper presents the results of using a sensor-integrated workpiece for in situ measurement of strain during an outer-diameter cylindrical grinding process. The motivation of this work is to measure in situ process parameters using inte…

Low-Cost Thin and Flexible Screen-Printed Pressure Sensor Open

Daniel Gräbner, Marcel Tintelott, Gerrit Dumstorff, Walter Lang · 2017

Commercial pressure sensors are often fabricated using well-established silicon micromachining technologies. The thickness and stiffness of silicon-based sensors make them in most cases unsuitable for the integration into materials and sur…

Surface Integrated Printed Interdigital Structure for Process Monitoring the Curing of an Adhesive Joint Open

Martina Hübner, Walter Lang, Gerrit Dumstorff · 2017

We present a printable interdigital structure, integrated into the surface of a component, to monitor the curing of two adhesively joint components during the fabrication process. In the factory of the future there is a need of new sensor …

Printed Sensors for Material Integrated Sensing: Functionalization of Semi-Finished Parts Open

Gerrit Dumstorff, Walter Lang · 2017

A new and innovative approach is presented to integrate sensors in materials and set up “smart materials”. Semi-finished parts are functionalized by printed sensors and printed interconnects. These functionalized parts are then further pro…

Sensor Integration in Castings Made of Aluminum - New Approaches for Direct Sensor Integration in Aluminum High Pressure Die Casting Open

Rico Tiedemann, Christoph Pille, Gerrit Dumstorff, Walter Lang · 2017

The use of sensors for detection, measurement and evaluation of mechanical and thermal loads is well known and essential for the implementation of »Structural Health Monitoring« (SHM). For this, sensors are mainly used for condition monito…

D1.4 - 3D printed machine parts: functionalization during additive fabrication Open

Daniel Gräbner, Gerrit Dumstorff, Frieder Lucklum · 2017

Functionalization of machine parts by integrating sensors into the surface or bulk is necessary when we think about smart or intelligent components.So far different sensors measuring strain, temperature or e.g.corrosion have been integrate…

P4.4 - Investigations on Noise Level in AC- and DC-Bridge Circuits for Sensor Measurement Systems Open

M. Asif Khan, Gerrit Dumstorff, Charles Winkelmann, W. Lang · 2016

Reducing noise in measurement is an important challenge in resistive sensing.This paper presents a system based on AC-excitation and lock-in amplification.In order to evaluate the circuit ability to perform precise measurement, noise level…

Steel Integrated IR Thermopile Array for Characterizing Grinding Processes Open

Marcel Reimers, B. Kolkwitz, David Beck, Mridusmita Sarma, Carsten Heinzel , et al. · 2016

We present an infrared sensor array integrated in a steel workpiece to measure the local temperature distribution during a grinding process. The sensor is mounted in the workpiece in a way that the field of vision is 1mm next to grinding s…

Investigations into packaging technology for membrane-based thermal flow sensors Open

Gerrit Dumstorff, E. Brauns, Walter Lang · 2015

A new packaging method to mount a membrane-based thermal flow sensor, flush with the surface, is presented. Therefore, a specific design for the housing is shown, which is also adaptable to other conditions. It has been experimentally show…

Investigations on the Impact of Material-Integrated Sensors with the Help of FEM-Based Modeling Open

Gerrit Dumstorff, Walter Lang · 2015

We present investigations on the impact of material-integrated sensors with the help of finite element-based modeling. A sensor (inlay) integrated with a material (matrix) is always a foreign body in the material, which can lead to a “woun…

D4.4 - Printed Sensor for Integrating in Aluminum during Casting Open

Gerrit Dumstorff, Walter Lang · 2015

We present a sensor with resistive structure integrated in aluminum.The sensor structures are realized on an aluminum substrate by screen printing.They are integrated in aluminum during casting.After fabrication the sensors were characteri…

Modellierung und experimentelle Untersuchung von materialintegrierten Sensoren Open

Gerrit Dumstorff · 2015

The thesis is divided in a theoretical and an experimental part. In the theoretical part investigations on the foreign body effect of a sensor in a material in terms of mechanical, thermal and thermo-mechanical loads are done. The second p…

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