TY - CONF AB - Fault effect simulation is a well-established technique for the qualification of robust embedded software and hardware as required by different safety standards. Our article introduces a Virtual Prototype based approach for the fault analysis and fast simulation of a set of automatically generated and target compiled software programs. The approach scales to different RISC-V ISA standard subset configurations and is based on an instruction and hardware register coverage for automatic fault injections of permanent and transient bitflips. The analysis of each software binary evaluates its opcode type and register access coverage including the addressed memory space. Based on this information dedicated sets of fault injected hardware models, i.e., mutants, are generated. The simulation of all mutants conducted with the different binaries finally identifies the cases with a normal termination though executed on a faulty hardware model. They are identified as a subject for further investigations and improvements by the implementation of additional hardware or software safety countermeasures. Our final evaluation results with automatic C code generation, compilation, analysis, and simulation show that QEMU provides an adequate efficient platform, which also scales to more complex scenarios. AU - Adelt, Peer AU - Koppelmann, Bastian AU - Müller, Wolfgang AU - Scheytt, Christoph ID - 24027 T2 - MBMV 2020 - Methods and Description Languages for Modelling and Verification of Circuits and Systems; GMM/ITG/GI-Workshop TI - A Scalable Platform for QEMU Based Fault Effect Analysis for RISC-V Hardware Architectures ER - TY - JOUR AB - In this paper we present the system and circuit level analysis and feasibility study of applying microwave Radio Frequency Identification (RFID) systems with multipleinput multiple-output (MIMO) reader technology for tracking machining tools in multipath fading conditions of production environments. In the proposed system the MIMO reader interrogates single-antenna tags, and a high RFID frequency of 5.8 GHz is chosen to reduce the size of the reader's antenna array. According to the requirements dictated by the performed system analysis at 5.8 GHz, a low power fully integrated analog frontend (AFE) is designed and fabricated in a standard 65-nm CMOS technology for low power passive transponders. Performance of the Differential Drive Rectifier (DDR) topology as the core of the energy harvesting unit is investigated in detail. A multi-stage DDR power scavenging unit is dimensioned to provide a 1.2 V rectified voltage for 20-30 kQ load range, with a high power conversion efficiency (PCE) for high frequency and low input power level signals. The rectified voltage is then converted to a 1 V regulated voltage for the AFE and the baseband processor with 30 to 50 μW of estimated power consumption. Transistors with standard threshold voltage (VT) have been used for implementation. Measurements of the fabricated multi-stage configuration of the circuit show a maximum PCE of 68.8% at -12.46 dBm, and an input quality factor (Q-factor) of approximately 10. Amplitude-shift keying (ASK) demodulator and backscattering modulator with 80% modulation index, operating according to EPC-C1G2 protocol are applied for data transfer. The AFE consumes less than 1 μW in the reading mode. The AFE tag chip is 0.55 × 0.58 mm 2 . AU - Haddadian, Sanaz AU - Scheytt, Christoph ID - 24029 JF - IEEE Journal of Radio Frequency Identification TI - Analysis, Design and Implementation of a Fully Integrated Analog Front-End for Microwave RFIDs at 5.8 GHz to be Used with Compact MIMO Readers ER - TY - CONF AB - Low-power receivers use direct-detection receiver architecture for its design simplicity and its low power dissipation. However, the direct-detection based receivers suffer from co-channel interference which significantly degrades the communication reliability. Co-channel interference robustness can be improved by using a BPSK Barker code modulated Surface Acoustic Wave (SAW) correlator as a prior stage to the RF direct detection circuit. This paper reports in details the design, fabrication and measurements of a 2.45 GHz SAW correlator with 13 bits length Barker code. The device is fabricated on Lithium Niobate LiNbO3 substrate and it is composed of an input non-coded Inter Digital Transducers (IDT), a Piezoelectric substrate and an output coded IDT. The device wavelength λ is set to 1.6 μm, considering a phase velocity of the wave equal to 3970 m.s-1. Several configurations of the device were designed and fabricated, particularly varying the aperture and the non-coded IDT length to find out the optimal device configuration. All devices were found to operate with Insertion Loss (IL) ranging from 12 to 15 dB at 2.45 GHz with a tip probing measurement setup, while a packaged sample has an IL of 12.45 dB at 2.44 GHz mounted on a PCB with external 50 Ω LC matching network. Additionally, time-domain measurement for the packaged device shows that the output has a correlation peak with a peak-to-side-lobe (PSL) ratio of 4:1 for a -0.5 dBm input BPSK Barker code signal. AU - Ballandras, Sylvain AU - Abughannam, Saed AU - Courjon, Emilie AU - Scheytt, Christoph ID - 24030 T2 - GeMiC 2020 - German Microwave Conference TI - Design and Fabrication of Barker Coded Surface Acoustic Wave (SAW) Correlator at 2.45 GHz for Low-Power Wake-up Receivers ER - TY - JOUR AU - Schraeder, Dirk Theodor AU - Schafran, Tommy AU - Geisen, Bärbel AU - Rubbert, Lisa ID - 24031 JF - Orthopädie Technik TI - Ein interdisziplinärer und akutmedizinischer Ansatz zur frühestmöglichen Intervention bei Patienten mit Diabetischem Fußsyndrom VL - 71 (9) ER - TY - JOUR AB - Abstract In two-phase flows in which the Capillary number is low, errors in the computation of the surface tension force at the interface cause Front-Capturing methods such as Volume of Fluid (VOF) and Level-Set (LS) to develop interfacial spurious currents. To better solve low Capillary number flows, special treatment is required to reduce such spurious currents. Smoothing the phase indicator field to more accurately compute the curvature or adding interfacial artificial viscosity are techniques that can treat this problem. This study explores OpenFOAM, Fluent and StarCCM+ VOF solvers for the classical case of a static bubble/droplet immersed in a continuous aqueous phase, with the focus on the ability of these solvers to adequately reduce spurious currents. The results are expected to be helpful for practicing chemical engineers who use multiphase CFD solvers in their work. AU - Inguva, Venkatesh AU - Schulz, Andreas AU - Kenig, Eugeny Y. ID - 24120 JF - Chemical Product and Process Modeling SN - 1934-2659 TI - On methods to reduce spurious currents within VOF solver frameworks. Part 1: a review of the static bubble/droplet ER - TY - GEN AU - Schöppner, Volker AU - Austermeier, Laura AU - Dietl, Kilian ID - 24133 KW - Compoundieren KW - Doppenschneckenextruder KW - Energieeintrag T2 - Blasformen & Extrusionswerkzeuge TI - Der richtige Dreh für Simulationen ER - TY - GEN AU - Schöppner, Volker AU - Austermeier, Laura AU - Dietl, Kilian ID - 24134 KW - Compoundieren KW - Doppenschneckenextruder KW - Energieeintrag T2 - K Zeitung TI - SKZ simuliert Doppelschnecke ER - TY - CONF AU - Ramaswamy, Arunselvan ID - 24145 T2 - 2020 28th Euromicro International Conference on Parallel, Distributed and Network-Based Processing (PDP) TI - DSPG: Decentralized Simultaneous Perturbations Gradient Descent Scheme ER - TY - CONF AU - Heid, Stefan Helmut AU - Ramaswamy, Arunselvan AU - Hüllermeier, Eyke ID - 24146 T2 - Proceedings-30. Workshop Computational Intelligence: Berlin, 26.-27. November 2020 TI - Constrained Multi-Agent Optimization with Unbounded Information Delay VL - 26 ER - TY - JOUR AU - Ramaswamy, Arunselvan AU - Bhatnagar, Shalabh AU - Quevedo, Daniel E ID - 24147 JF - IEEE Transactions on Automatic Control TI - Asynchronous stochastic approximations with asymptotically biased errors and deep multi-agent learning ER - TY - JOUR AB - AbstractThis paper presents the results of an interlaboratory study of the rheological properties of cement paste and ultrasound gel as reference substance. The goal was to quantify the comparability and reproducibility of measurements of the Bingham parameters yield stress and plastic viscosity when measured on one specific paste composition and one particular ultrasound gel in different laboratories using different rheometers and measurement geometries. The procedures for both in preparing the cement paste and carrying out the rheological measurements on cement paste and ultrasound gel were carefully defined for all of the study’s participants. Different conversion schemes for comparing the results obtained with the different measurement setups are presented here and critically discussed. The procedure proposed in this paper ensured a reasonable comparability of the results with a coefficient of variation for the yield stress of 27% and for the plastic viscosity of 24%, despite the individual measurement series’ having been performed in different labs with different rheometers and measurement geometries. AU - Haist, Michael AU - Link, Julian AU - Nicia, David AU - Leinitz, Sarah AU - Baumert, Christian AU - von Bronk, Tabea AU - Cotardo, Dario AU - Eslami Pirharati, Mahmoud AU - Fataei, Shirin AU - Garrecht, Harald AU - Gehlen, Christoph AU - Hauschildt, Inga AU - Ivanova, Irina AU - Jesinghausen, Steffen AU - Klein, Christopher AU - Krauss, Hans-W. AU - Lohaus, Ludger AU - Lowke, Dirk AU - Mazanec, Oliver AU - Pawelczyk, Sebastian AU - Pott, Ursula AU - Radebe, Nonkululeko W. AU - Riedmiller, Joachim Jürgen AU - Schmid, Hans-Joachim AU - Schmidt, Wolfram AU - Secrieru, Egor AU - Stephan, Dietmar AU - Thiedeitz, Mareike AU - Wilhelm, Manfred AU - Mechtcherine, Viktor ID - 24182 JF - Materials and Structures SN - 1359-5997 TI - Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries ER - TY - JOUR AU - Moritzer, Elmar AU - Wortmann, M. AU - Sabantina, L. AU - Klocker, M. AU - Mirasol, JR ID - 24183 IS - 50 JF - JOURNAL OF INDUSTRIAL TEXTILES TI - Stabilization of polyacrylonitrile nanofiber mats obtained by needleless electrospinning using dimethyl sulfoxide as solvent ER - TY - JOUR AU - Moritzer, Elmar AU - Mühlhoff, Frederik Marvin AU - Krampe, Erhard AU - Lochbaum, Ella ID - 24184 IS - 07/20 JF - Plastverarbeiter TI - 2K-Haftverbunde aus originär inkompatiblen Kunststoffen ER - TY - CONF AU - Moritzer, Elmar AU - Kartelmeyer, Stephan AU - Hüttemann, Vincent ID - 24201 T2 - Direct Digital Manufacturing Conference 2020 TI - Additive Manufactured Heat Pipe Injection Mould Element ER - TY - CONF AU - Moritzer, Elmar AU - Hillemeyer, Johannes ID - 24203 T2 - 6. Fachkonferenz 3D-Druck in der Automobielindustrie TI - Additiveteile Direktverschrauben ER - TY - GEN AU - Schöppner, Volker AU - Dörner, M. AU - Marschik, C. ID - 24204 TI - ANALYSIS OF THE ADVANTAGEOUS PROCESS AND MIXING BEHAVIOUR OF WAVE-DISPERSION SCREWS IN SINGLE SCREW EXTRUSION ER - TY - CONF AU - Moritzer, Elmar AU - Hillemeyer, Johannes ID - 24206 T2 - 10. Gemeinschaftskolloquium TI - Ansatz zur sicheren Direktverschraubung additiv gefertigter Einschraubtuben ER - TY - JOUR AU - Schöppner, Volker AU - Dörner, M. AU - Marschik, C. AU - Roland, W. AU - Schaufler, S. AU - Steinbichler, G. ID - 24207 IS - 12(9) JF - Polymers TI - Application of Network Analysis to Flow Systems with Alternating Wave Channels: Part B. (Superimposed Drag-Pressure Flows in Extrusion) ER - TY - CONF AU - Moritzer, Elmar AU - Wittke, M. ID - 24213 T2 - Annual Technical Conference of the Society of Plastics Engineers (ANTEC) 2020 TI - CONTEXT OF FIBER LENGTH DISTRIBUTION, HOMOGENEITY AND MECHANICAL PROPERTIES IN DIRECT COMPOUNDING INJECTION MOLDING OF FIBER REINFORCED THERMOPLASTICS ER - TY - CONF AU - Moritzer, Elmar AU - Krassmann, Dimitri ID - 24228 T2 - 73rd Annual Assembly of the International Institute of Welding (IIW) TI - Development of a New Joining Technology for Hybrid Joints of Sheet Metal and Continuous Fiber-Reinforced Thermoplastics ER - TY - JOUR AU - Schöppner, Volker AU - Dörner, M. AU - Marschik, C. AU - Steinbichler, G. ID - 24231 JF - Polymers TI - Development of an Analytical Model to Describe the Disperse Melting in Wave-Dispersion Screws ER - TY - JOUR AU - Moritzer, Elmar AU - Jilg, J. AU - Schilp, C. AU - Krempl, N. AU - Friesenbichler, W. ID - 24232 JF - Kunststoffe TI - Die Kunst der Entformung ER - TY - JOUR AU - Moritzer, Elmar AU - Hopp, Matthias AU - Wittke, Marius ID - 24233 JF - WAK Jahreszeitschrift TI - EINSATZ VON MASCHINELLEM LERNEN FÜR DIE REZYKLAT-VERARBEITUNG ER - TY - JOUR AU - Moritzer, Elmar AU - Krassmann, Dimitri ID - 24234 JF - Joining Plastics TI - Entwicklung einer neuartigen Fügetechnik für Organoblech-Hybridverbindungen ER - TY - CONF AU - Moritzer, Elmar AU - Krassmann, Dimitri AU - Brikmann, Johannes ID - 24235 T2 - 10. Fügetechnisches Gemeinschaftskolloquium TI - Entwicklung eines Spritzgießsonderverfahrens zur Herstellung von Hybridbauteilen aus faserverstärkten Thermoplasten und Metallblechen ER - TY - CONF AU - Moritzer, Elmar AU - Kartelmeyer, S. AU - Hüttemann, M. AU - Jaroschek, C. ID - 24237 T2 - 78th Annual Technical Conference for Plastics Professionals (ANTEC) TI - INJECTION MOLD COOLED WITH ADDITIVE MANUFACTURED HEAT PIPE CORE-ELEMENT ER - TY - CONF AU - Moritzer, Elmar AU - Mühlhoff, Frederik Marvin ID - 24238 T2 - Annual Technical Conference of the Society of Plastics Engineers (ANTEC) 2020 TI - Inline Surface Activation in the multi Injection Molding Process ER - TY - JOUR AU - Moritzer, Elmar AU - Mühlhoff, Frederik Marvin AU - Lochbaum, Ella AU - Krampe, Erhard ID - 24239 JF - KGK - Rubberpoint TI - InMould-Plasma Technologie - Dauerhaft beständige 2K-Verbunde aus originär inkompatiblen Kunststoffen ER - TY - JOUR AU - Rasche, David B. AU - Tigges, Lena AU - Schmid, Hans-Joachim ID - 24240 JF - Review of Scientific Instruments SN - 0034-6748 TI - An apparatus to synthesize ceramic nanoparticles with a precisely adjusted temperature history and a significant mass output ER - TY - JOUR AB - For gas phase nanoparticle production, hot wall reactors are widely used. In this article, we will describe the fundamental design considerations for a hot wall reactor system able to produce oxide nanoparticles. The system is outstanding in its ability to produce mostly spherical nanoparticles at particle sizes of up to 100 nm and even larger at mass outputs in the order of grams per hour by being able to rapidly quench the aerosol. While high production rates or larger particle sizes are already easily obtained with hot wall reactors, it is very challenging to produce these spherical particles at high mass rates. We will show in this research that the temperature and the particle number concentration are the major aspects influencing the particle morphology at the end of the process. Investigation on the performance of the setup shows good control over the temperature and the particle production stability. A representative particle characterization using SEM and scanning mobility particle sizer showed that particles are mostly spherical, while the particle size distribution had a geometric standard deviation close to 1.5. In addition to the aspects mentioned above, a possibility to manipulate the aggregation downstream of the reactor is to be presented as well. We found that applying electrical charges to the aerosol particles (in opposite polarity) can significantly foster aggregation. AU - Rasche, David B. AU - Tigges, Lena AU - Schmid, Hans-Joachim ID - 24241 JF - Review of Scientific Instruments TI - An Apparatus to Synthesize Ceramic Nanoparticles with a Precisely Adjusted Temperature History and a Significant Mass Output VL - 91 ER - TY - CONF AU - Moritzer, Elmar AU - Hirsch, André AU - Dalmer, C. ID - 24242 T2 - Additive Manufacturing in Products and Applications (AMPA) TI - Investigation of Plastic Freeformed, Open-Pored Structures with Regard to Producibility, Reproducibility and Liquid Permeability ER - TY - JOUR AU - Moritzer, Elmar AU - Mühlhoff, Frederik Marvin AU - Krampe, Erhard ID - 24246 IS - 5 JF - Kunststoff + Verarbeitung TI - Kostensenkung beim Mehrkomponenten-Spritzgießen ER - TY - JOUR AU - Moritzer, Elmar AU - Mühlhoff, Frederik Marvin AU - Krampe, Erhard AU - Böhnke, Birte ID - 24248 JF - Kunststoffe TI - Mehr Materialkombinationen, weniger Kosten ER - TY - JOUR AU - Moritzer, Elmar AU - Wittke, M. ID - 24249 JF - MNWP Magazin TI - Metallsubstitution durch Spritzgießtechnik gerät allmählich in Reichweite ER - TY - JOUR AU - Moritzer, Elmar AU - Mühlhoff, Frederik Marvin AU - Krampe, Erhard AU - Böhnke, Birte ID - 24250 JF - Kunststoffe international TI - More Material Combinations, Lower Costs ER - TY - CONF AU - Moritzer, Elmar AU - Krassmann, Dimitri ID - 24251 T2 - DVS Congress 2020 TI - Neuartige Fügetechnik für Organoblech-Hybridverbindungen ER - TY - JOUR AU - Moritzer, Elmar AU - Wittke, M. ID - 24252 JF - Plastverarbeiter TI - Neue Maßstäbe in puncto Festigkeit und Faserlänge ER - TY - JOUR AU - Moritzer, Elmar AU - Mühlhoff, Frederik Marvin AU - Krampe, Erhard AU - Böhnke, Birte ID - 24253 JF - adhesion ADHESIVES + SEALANTS TI - Plasma technology rationalizes 2-component processes ER - TY - JOUR AU - Moritzer, Elmar AU - Mühlhoff, Frederik Marvin AU - Krampe, Erhard AU - Böhnke, Birte ID - 24256 IS - 10 JF - adhäsion KLEBEN & DICHTEN TI - Plasma-Technologie zur Rationalisierung von 2K-Prozessen ER - TY - GEN ED - Moritzer, Elmar ED - Budde, Christopher ED - Hüttner, Matthias ED - Krassmann, Dimitri ID - 24259 TI - Spritznieten als neue Organoblech-Metall-Hybridfügetechnik ER - TY - CONF AU - Moritzer, Elmar AU - Schumacher, C. ID - 24260 T2 - 4th International Conference Progress on Polymers and Composites Products and Manufacturing Technologies (POLCOM) TI - Stainless steel parts produced by Fused Deposition Modeling and a sintering process compared to components manufactured in Selective Laser Melting ER - TY - JOUR AU - Vogtschmidt, Sascha AU - Fiebig, Isabel AU - Schöppner, Volker ID - 24312 IS - 3-4 JF - Joining Plastics TI - Wechseldehnungsschweißen - Entwicklung einer Fügetechnologie für 3D-Geometrien ER - TY - CONF AU - Malatyali, Hatice AU - Schöppner, Volker AU - Behrendt, Alexander AU - Hoemann, Theresa AU - Sporkmann, Frederick AU - Hanselle, Felix ID - 24317 T2 - SPE ANTEC TI - Differences between the recycled carbon fibers especially regarding the product quality, ER - TY - CONF AU - Vogtschmidt, Sascha AU - Schöppner, Volker ID - 24318 T2 - DVS CONGRESS 2020 - Große Schweißtechnische Tagung TI - Wechseldehnungsschweißen - Entwicklung einer Fügetechnologie für 3D-Geometrien VL - 365 ER - TY - JOUR AU - Vogtschmidt, Sascha AU - Schöppner, Volker ID - 24321 JF - Welding in the World TI - Vibration welding of components with angled areas in the direction of vibration VL - 64 ER - TY - JOUR AU - Vogtschmidt, Sascha AU - Schöppner, Volker ID - 24324 IS - 3-4 JF - Joining Plastics TI - Schweißnahtkennwerte für die lebensdaueroptimierte Bauteilauslegung von hochtemperaturbeständigen Thermoplasten ER - TY - CONF AU - Krebs, Benjamin ID - 24373 IS - 21233 T2 - Academy of Management Proceedings TI - Antecedents and Performance Consequences of High-Potential Scheme Use VL - 1 ER - TY - GEN AU - Arndt, Theresa AU - Schöppner, Volker ID - 24385 T2 - Joining Plastics TI - Kunststofftechnik Paderborn: Entwicklung von Scale-Up-Regeln für das quasisimultane Laserdurchstrahlschweißen von Thermoplasten ER - TY - GEN AU - Arndt, Theresa AU - Schöppner, Volker ID - 24386 T2 - K-Zeitung TI - Wenn Regeln Potenziale freisetzen ER - TY - GEN AU - Arndt, Theresa AU - Schöppner, Volker ID - 24387 T2 - PhotonicsViews TI - Quasi-Simultaneous Laser Transmission Welding ER -