Publikationen – Institut für Fertigungstechnik und Werkzeugmaschinen

Hier finden Sie die Dissertationen des IFW

Zu den Dissertationen

Hier finden Sie die Patente des IFW

Zu den Patenten

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 …

Anzahl der gefundenen Publikationen: 4816

Denkena, B., Klemme, H., Handrup, M., Schmidt, C.: (2022): Mikrostrukturen erhöhen die Effizienz von Flügelzellenpumpen, MM MaschinenMarkt (2022), online erschienen 17. August 2022, 5 Seiten. | Datei |

Denkena, B., Wichmann, M., Heide, K. M., Räker, R.: (2022): Laser Scanning Based Object Detection to Realize Digital Blank Shadows for Autonomous Process Planning in Machining, Journal of Manufacturing and Materials Processing (2022), 6, 1, 16 Seiten. | Datei |
DOI: https://doi.org/10.3390/jmmp6010001

Pape, F., Liu, H., Ellersiek, L., Krödel, A., Denkena, B., Poll, G.: (2022): Influence of Metal Working Fluids in Cutting Processes, Defect and Diffusion Forum, Vol. 414 (2022), S. 51-57. | Datei |
DOI: https://doi.org/10.4028/p-dnly6l
ISSN: 1662-9507 Beschreibung: <p>For the realization of efficient production processes, an understanding of the appropriate application of metal working fluids (MWF) is necessary. In addition to knowledge about the process-related aspect of chip transport and the macroscopic cooling effect, the characteristics and properties of the lubrication film thickness and the cooling conditions in the area of the secondary shear zone on the chip surface, i.e. in the direct vicinity of the material separation, represent a fundamental scientific issue within production technology. In particular, these areas generate a high proportion of heat during machining, so that the local friction phenomena have a significant influence on the resulting edge zone of the produced component and the thermomechanical load on the tool. Currently, there are no numerical models and methods for mapping and predicting the lubrication film thickness that can be used in the sense of a targeted design of the cooling lubricant supply. The aim is to transfer the methods from the field of tribology of machine elements, which have already led to significant knowledge gains in this discipline, to machining and couple them to approaches already established in machining. To this end, experiments on tribometers have been performed as a first step. For example, an oscillating pin-on-plate tribometer was used. In this setup, a steel plate is doing oscillating motion against a fixed ball (diameter of 6 mm) under a defined load. The frictional force is recorded during the test. A MWF in a heated tank is used for the lubricant. Additional investigations on the film thickness were performed on an optical EHL (elasto-hydrodynamic lubrication) tribometer. In this setup, a ball rolls on a glass-disc and the resulting film thickness is measured by interferometry. For comparison, the influence of the MWF on the chip formation process in metal cutting was investigated on a special test rig (machine tool). This test rig allows high speed imaging and force measurements of an orthogonal cutting process while using MWFs. The first results show a reduced contact length between chip and tool as well as lower process forces for processes with MWFs compared to dry cutting processes. In future investigations, this test rig will be applied for the identification of the local friction coefficient between chip and tool. The data gained from the cutting test are compared with the output of the tribological test rigs.  </p>

Denkena, B., Krödel-Worbes, A., Müller-Cramm, D.: (2022): Wear‑adaptive optimization of in‑process conditioning parameters during face plunge grinding of PcBN, Scientifc Reports (2022), 11 Seiten. | Datei |
DOI: https://doi.org/10.1038/s41598-022-05066-5

Heikebrügge, S., Ottermann, R., Breidenstein, B., Wurz, M. C., Dencker, F.: (2022): Residual Stresses from Incremental Hole Drilling Using Directly Deposited Thin Film Strain Gauges, Experimental Mechanics (2022), published online 14. January 2022, 13 Seiten. | Datei |
DOI: https://doi.org/10.1007/s11340-022-00822-0 Beschreibung: <p>Background Commonly, polymer foil-based strain gauges are used for the incremental hole drilling method to obtain residual stress depth profles. These polymer foil-based strain gauges are prone to errors due to application by glue. For example zero depth setting is thus often erroneous due to necessary removal of polymer foil and glue. This is resulting in wrong use of the calibration coefcients and depth resolution and thus leading to wrong calculations of the obtained residual stress depth profles. Additionally common polymer foil-based sensors are limited in their application regarding e.g. exposure to high temperatures. Objective This paper aims at a frst step into the qualifcation of directly deposited thin flm strain gauges for use with the incremental hole drilling method. With the directly deposited sensors, uncertainties regarding the determination of calibration coefcients and zero depth setting due to the absence of glue can be reduced to a minimum. Additionally, new areas of interest such as the investigation of thermally sprayed metallic layers can be addressed by the sensors due to their higher temperature resilience and their component inherent minimal thickness. Methods For the frst time, diferent layouts of directly deposited thin flm strain gauges for residual stress measurements were manufactured on a stainless steel specimen. Strain measurements during incremental hole drilling using a bespoke hole drilling device were conducted. Residual stress depth profles were calculated using the Integral method of the ASTM E837 standard. Afterwards, strain measurements with conventional polymer foil-based strain gauges during incremental hole drilling were conducted and residual stress depth profles were calculated accordingly. Finally the obtained profles were compared regarding characteristic values. Results The residual stress depth profles obtained from directly deposited strain gauges generally match the ones obtained from conventional polymer foil based strain gauges. With the novel strain gauges, zero depth setting is simplifed due to the absence of glue and polymer foil. With the direct deposition, a wide variety of rosette designs is possible, enabling a more detailed evaluation of the strain feld around the drilled hole. Conclusions The comparative analysis of the obtained residual stress depth profles shows the general feasibility of directly deposited strain gauges for residual stress measurements. Detailed investigations on uncertainty sources are still necessary.  </p>

Gerken, J. F., Klages, N., Biermann, D., Denkena, B.: (2022): Development and analysis of a mechatronic system for in-process monitoring and compensation of straightness deviation in BTA deep hole drilling, Mechanical Systems and Signal Processing 170 (2022), 19 Seiten. | Datei |
DOI: https://doi.org/10.1016/j.ymssp.2022.108838

Denkena, B., Bergmann, B., Relard, A.: (2022): Produktivitätssteigerung durch Werkzeugverschleiß, Zerspanungstechnik.de (2022), erschienen online am 18. Januar 2022, 2 Seiten. | Datei |

Denkena, B., Dittrich, M.-A., Settnik, S. J.: (2022): Similarity-based Process and Set-up Time Estimation, Proceedings of the 8th CARV 2021 and the 10th World MCPC 2021, Aalborg, Denmark, Oct/Nov 2021, S. 603-611. | Datei |
DOI: https://doi.org/10.1007/978-3-030-90700-6_68

Denkena, B., Bergmann, B., Berlin, J., Handrup, M., Maiss, O.: (2022): Sensorisches Festwalzwerkzeug für die Prozessüberwachung, mav (2022), Nr. 1, S. 66-68. | Datei |

Denkena, B., Bergmann, B., Raffalt, D.: (2022): Operational behaviour of graded diamond grinding wheels for end mill cutter machining, SN Applied Sciences (2022), 10 Seiten. | Datei |
DOI: https://doi.org/10.1007/s42452-022-04970-9

Liu, H. C., Pape, F., Zhao, Y., Ellersiek, L., Denkena, B., Poll, G.: (2022): On the Elastohydrodynamic Film‑Forming Properties of Metalworking Fluids and Oil‑in‑Water Emulsions, Tribology Letters, Vol. 71 (2023), Nr. 10, published online 07. December 2022, 13 Seiten. | Datei |
DOI: https://doi.org/10.1007/s11249-022-01684-2

Breidenstein, B., Bergmann, B., Beblein, S., Grzeschik, F.: (2022): FEM-based simulation of continuous wear of CrAlN-coated tools, 10th CIRP Global Web Conference – Material Aspects of Manufacturing Processes, Procedia CIRP, Vol. 115 (2022), online 25.-27. October 2022, S. 95-100. | Datei |
DOI: https://doi.org/10.1016/j.procir.2022.10.056

Denkena, B., Bergmann, B., Hein, M.: (2022): Verschleißverhalten nachgiebiger Diamantpolierwerkzeuge, Diamond Business, Vol. 4 (2022), Nr. 83, S. 42-47. | Datei |
ISSN: 1619-5558

Denkena, B., Breidenstein, B., Wichmann, M., Nguyen, H. N., Fricke, L. V., Barton, S., Maier, H. J.: (2022): Funktionsorientierte Stellgrößenauslegung beim Drehen, WT Werkstattstechnik Bd. 112 (2022), Nr. 11-12, S. 767-772. | Datei |
DOI: doi.org/10.37544/1436-4980-2022-11-12-41

Denkena, B., Bergmann, B., Murrenhoff, M.: (2022): Effiziente und ressourcenschonende Fertigung von Luftfahrtgetrieben, Unter Span (2022), S. 32-33. | Datei |
ISSN: 2365-7006

Denkena, B., Dittrich, M.-A., Malek, T., Sleiman, K., Rettschlag, K., Jäschke, P., Kaierle, S.: (2022): Numerical investigation of the infuence of process parameters and tool path on the temperature in the laser glass deposition (LGD) process, Production Engineering (2022), published online 14. September 2022, 10 Seiten. | Datei |
DOI: https://doi.org/10.1007/s11740-022-01157-4

Denkena, B., Klemme, H., Wnendt, E., Meier, M.: (2022): Elektrische Spannfutter für die Drehbearbeitung, WT WerkstattTechnik, Bd. 112 (2022), Nr. 7-8, S. 1-3. | Datei |

Denkena, B., Bergmann, B., Lang, R.: (2022): Grinding Behaviour Of Metal-Bonded Diamond Grinding Wheels With An Additive Of Chromium As A Carbide-Forming Element, World PM2022 - Session 37 : Hard metals, cermets and diamond tools - Processing II (2022), 09.-13. October 2022, Lyon, France, 8 Seiten. | Datei |

Denkena, B., Klemme, H., Böhse, M.-F.: (2022): Werkzeugmaschine mit aktiver Ruckentkopplung, VDI-Z, Bd. 164 (2022) Nr. 9, S. 39-41. | Datei |

Denkena, B., Bergmann, B., Lang, R.: (2022): Metallisch gebundene Diamantschleifscheiben mit Zugabe von Chrom als Karbidbildner, Diamond Business, Vol.4 (2022), S. 26-31. | Datei |

Vortrag

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 …

Anzahl der gefundenen Publikationen: 673

Bergmeier, M.: (2018): Fine positioning system for large components, 7th WGP Annual Congress, Aachen, October 6th, 2017, 22 Seiten.

Denkena, B., Rehe, M., Wagener, C.: (2018): Automatische OEE-Erfassung, Production Systems 2018, 19. Juni 2018, Stuttgart, 19 Seiten.

Denkena, B., Grove, T., Schmidt, C.: (2018): Machining of Micro Dimples for Friction Reduction in Cylinder Liners, 6th CIRP Global Web Conference, 23. - 24. Oktober 2018, Shantou, China, 6 Seiten.

Denkena, B., Grove, T., Suntharakumaran, V.: (2018): Chip formation in machining metal bonded grinding layers, 6th CIRP Global Web Conference, 23. - 24. Oktober 2018, Shantou, China, 12 Seiten.

Denkena, B., Grove, T., Suntharakumaran, V.: (2018): Porous metal bonds increase the resource effiency for Profile grinding, 25th CIRP Life Cycle Engineering (LCE) Conference, 30.04. - 02.05.2018, Copenhagen, 14 Seiten.

Denkena, B., Dittrich, M.-A., Stobrawa, S., Jenkner, I.: (2018): Simulation-based personnel planning considering individual competences of employee, WGP-Kongress, 19th-20th November 2018, Aachen, 19 Seiten.

Denkena, B., Grove, T., Prasanthan, V., Eigenmann, B., Heni, Z., Feldmann, G., Brinkhaus, J., Haase, A.: (2018): Gezielte Bauteilrandzonenbeeinflussung durch innovatives, druckgeregeltes Walzen unter Verwendung eines Aerosols als Druckmedium, AWT - 13. Fachausschuss Eigenspannungen, 11.10.2017, Braunschweig, 27 Seiten.

Denkena, B., Grove, T., Ellersiek, L.: (2018): A novel tool concept for roughing and finishing operations, 18th Machining Innovations Conference for Aerospace Industry (MIC 2018), November 28th-29th, 2018, Garbsen, 14 Seiten.

Gartzke, T.: (2018): Strukturierte Schleifscheibe. Bestimmung des Kühlschmierstoffvolumenstroms in der Kontaktzone beim Schleifen mit mikrostrukturierten Schleifscheiben, KSS Forum des Hanserverlags, 22. November 2018, Fellbach, 7 Seiten.

Denkena, B., Grove, T., Schmidt, C.: (2018): Friction reduction in heavy duty cylinder liners by machined micro dimples, EUSPEN Special Interest Group Structured and Freeform Surface, 29th November 2018, Paris, 16 Seiten.

Breidenstein, B., Prasanthan, V.: (2018): Analyse der Oberflächen- und Randzoneneigenschaften von US-laserstrahlgeschweißten Verbundwellen, Arbeitstreffen "Energiedispersive Röntgenbeugung", 22. November 2018, Kassel, 23 Seiten.

Denkena, B., Dittrich, M.-A., Nguyen, H.N.: (2018): Technological CAD/CAM chain for automated polishing of geometrically complex workpieces, 6th CIRP Global Web Conference on Production Engineering, 23-25 October 2018, Shantou, China, 6 Seiten.

Denkena, B., Bergmann, B., Rahner, B.-H.: (2018): Energy-efficient control of dust extraction for the machining of fibre-reinforced plastics, 6th CIRP Global Web Conference on Production Engineering, 23-25 October 2018, Shantou, China, 7 Seiten.

Denkena, B., Dinkelacker, F., Rienäcker, A., Schmidt, C., Pasligh, H., Özdemir, Ö.: (2018): Machining of micro dimples for friction reduction in cylinder liners, 59. Tribologie-Fachtagung, Göttingen, 25th September 2018, 16 Seiten.

Denkena, B., Rehe, M., Arnold, D.: (2018): Digitale Aufrüstung alter Maschinen, VDMA-Informationstag "Bestandsmaschinen in Industrie 4.0 integrieren", 18. September 2018, Frankfurt am Main, 17 Seiten.

Denkena, B., Grove, T., Krödel, A., Ellersiek, L.: (2018): Increased performance in high speed turning of Inconel 718 by laser structuring of PcBN tools, 8th HPC 2018 – CIRP Conference on High Performance Cutting, 25.06. - 27.06.2018, Budapest, 15 Seiten.

Denkena, B., Dittrich, M.-A., Wilmsmeier, S.: (2018): Automated production data feedback for adaptive work planning and production control, CARV 2018, Nantes, 10.10.2018, 21 Seiten.

Denkena, B., Bergmann, B., Schreiber, P., Schmidt A.: (2018): Sensing guide carriages for force measurement and condition monitoring, IWMT 2018, Seogwipo-si (서귀포시), 19th July 2018, 20 Seiten.

Dittrich, M.-A.: (2018): Maschinelles Lernen in der Prozessplanung und -steuerung. Anwendungsbeispiele im Kontext der autonomen Produktion, 2. Regionalkonferenz, Applied Machine Learning Academy, 06.09.2018, 26 Seiten.

Denkena, B., Bergmann, B., Boujnah, H.: (2018): Online Compensation of Tool Deflection in Milling Operations by Feeling Machine Tools, 14th International Conference on High Speed Machining - HSM 2018, 17-18 April 2018, San Sebastian, 27 Seiten.

Publikationen des Instituts für Fertigungstechnik und Werkzeugmaschinen

Vortrag