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Keyvani Janbahan, A. (author), van der Veen, G. (author), Tamer, M.S. (author), Sadeghian Marnani, H. (author), Goosen, H. (author), van Keulen, F. (author)The real-time and accurate measurement of tip-sample interaction forces in Tapping Mode Atomic Force Microscopy (TM-AFM) is a remaining challenge. This obstruction fundamentally stems from the causality of the physical systems. Since the input of the dynamic systems propagates to the output with some delay, and multiple different inputs can...article 2020
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Leonetti, D. (author), Maljaars, J. (author), Snijder, H.H. (author)This paper presents a probabilistic fatigue life prediction model for welded details subjected to variable amplitude random loading, using the nominal stress approach. The proposed model makes use of CA S-N curves in combination with the relative damage rule which allows to globally account for load interaction effects, and the damage limit...article 2020
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Patra, B. (author), van Dijk, J.P.G. (author), Subramanian, S. (author), Corna, A. (author), Xue, X. (author), Jeon, C. (author), Sheikh, F. (author), Juarez-Hernandez, E. (author), Esparza, B.P. (author), Rampurawala, H. (author), Carlton, B. (author), Samkharadze, N. (author), Ravikumar, S. (author), Nieva, C. (author), Kim, S. (author), Lee, H.J. (author), Sammak, A. (author), Scappucci, G. (author), Veldhorst, M. (author), Vandersypen, L.M.K. (author), Babaie, M. (author), Sebastiano, F. (author), Charbon, E. (author), Pellerano, S. (author)Quantum computers (QC), comprising qubits and a classical controller, can provide exponential speed-up in solving certain problems. Among solid-state qubits, transmons and spin-qubits are the most promising, operating ≪ 1K. A qubit can be implemented in a physical system with two distinct energy levels representing the |0⟩ and |1⟩ states, e.g....conference paper 2020
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Pijpers, R.J.M. (author), Verdenius, S.A. (author), Abspoel-Bukman, L.M. (author), Maljaars, J. (author)This experimental study considers load sequence effects in fatigue crack growth in coupon specimens and in element specimens. The coupon specimens were standard edge crack configurations cyclically loaded under four point bending on base metal and welds, whereas the element specimens were full-scale axially loaded tubular joints. Whereas load...article 2020
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Leonetti, D. (author), Maljaars, J. (author), Snijder, H.H. (author)Before bolts were invented, hot-riveting was employed as technological process to produce built-up structural members of steel structures. Nowadays, these structures being still in service and susceptible to fatigue failure,they need to be assessed for their remaining service life. To estimate the fatigue life distribution of riveted connections...article 2019
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Peternella, F.G. (author), Esselink, T. (author), Dorsman, B. (author), Harmsma, P.J. (author), Horsten, R.C. (author), Zuidwijk, T. (author), Urbach, H.P. (author), Adam, A.L.C. (author)In this paper, the design and the characterization of a novel interrogator based on integrated Fourier transform (FT) spectroscopy is presented. To the best of our knowledge, this is the first integrated FT spectrometer used for the interrogation of photonic sensors. It consists of a planar spatial heterodyne spectrometer, which is implemented...article 2019
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van Es, M.H. (author), Sadeghian Marnani, H. (author)Scanning Subsurface Ultrasonic Force Microscopy (SSURFM) relies on a change in the sensing cantilever’s resonance frequency to detect subsurface structures through their mechanical properties. It gains sensitivity both from exploiting the cantilevers large dynamical stiffness at high frequency and from using the sensitivity of the shifting...other 2019
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Ba, A. (author), van den Heuvel, J. (author), Mateman, P. (author), Zhou, C. (author), Busze, B. (author), Song, M. (author), He, Y. (author), Ding, M. (author), Dijkhuis, J. (author), Tiurin, E. (author), Madampu, S. (author), Boer, P. (author), Traferro, S. (author), Zhang, Y. (author), Liu, Y.-H. (author), Bachmann, C. (author), Philips, K. (author)A WiFi (IEEE 802.11g) and BLE combo transmitter (TX) for IoT applications is presented. A wideband digital polar architecture consisting of an all-digital PLL-based frequency modulator and a switched-capacitor digitally-controlled PA achieves optimal energy efficiency for both WiFi and BLE. The dynamic FM correction and AM alias suppression...conference paper 2018
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de Wit, J.J.M. (author), van Rossum, W.L. (author)A sensor network has been developed consisting of four RF nodes that automatically set up a network organization and synchronize wirelessly. In the system bistatic backscatter and forward scatter radar measurements are combined. For detection of small and slow targets, like humans, suppression of the background including the direct signals...conference paper 2018
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Leonetti, D. (author), Maljaars, J. (author), Snijder, H.H.B. (author)In design against fatigue, a lower bound stress range vs. endurance curve (S-N curve) is employed to characterize fatigue resistance of plain material and structural details. With respect to the inherent variability of the fatigue life, the S-N curve is related to a certain probability of exceedance, a percentile of the fatigue life. This paper...article 2017
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van Es, M.H. (author), Sadeghian Marnani, H. (author)Inspection of EUV mask substrates and blanks is demanding. We envision this is a good target application for massively parallel Atomic Force Microscopy (AFM). We envision to do a full surface characterization of EUV masks with AFM enabling 1nm true 3D resolution over the entire surface. The limiting factor to do this is in the sensor itself:...conference paper 2016
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Dragt, R.C. (author), Maljaars, J. (author), Tuitman, J.T. (author), Salman, Y. (author), Otheguy, M.E. (author)Retardation is a load sequence effect, which causes a reduced fatigue crack growth rate after an overload is encountered. Retardation can be cancelled when the overload is followed by an underload. The net effect is beneficial to the fatigue lifetime of Offshore Wind Turbines (OWTs). To be able to take this into account, computationally...conference paper 2016
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Maljaars, J. (author), Pijpers, R. (author), Slot, H. (author)Many welded steel structures in marine, offshore, and infrastructural industries are subjected to variable amplitude (VA) fatigue loads. It is well known that the level and sequence of the load cycles can cause crack growth retardation or acceleration and thus influence the fatigue life. An important sequence effect is generated by a large...article 2015
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Silitonga, S. (author), Maljaars, J. (author), Soetens, F. (author), Snijder, H.H. (author)Engineering methods to predict the fatigue life of structures have been available since the beginning of the 20th century. However, a practical problem arises from complex loading conditions and a significant concern is the accuracy of the methods under variable amplitude loading. This paper provides an overview of existing fatigue damage models...article 2013
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Rahman, T. (author), Jansen, E.L. (author), Tiso, P. (author)In this paper, a finite element-based approach for nonlinear vibration analysis of shell structures is presented. The approach makes use of a perturbation method that gives an approximation for the amplitude-frequency relation of the structure. The method is formulated using a functional notation and is subsequently converted to a finite element...article 2011
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Hanyak, M. (author), Darhuber, A.A. (author), Ren, M. (author)Due to its flexibility, inkjet printing has become a widespread technique for the non-contact deposition of liquids, solutions and melts on a variety of substrates with a lateral resolution down to about 10 μm. Because the patterns are formed via coalescence of many individual droplets, ripples and undulations can appear in the deposited layers,...article 2011
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Vos, J. (author), Houben, M.M.J. (author), Vercammen, M.L.S. (author)About two decades ago, Vercammen proposed a rating procedure for low frequency sounds. To enable refinements of this procedure, the present study addressed a few spectral and temporal issues. The investigation was carried out in the laboratory with 56 subjects ranging between 20 and 60 years of age. To increase our insight into the spectral...article 2010
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Valente Pais, A.R. (author), van Paassen, M.M. (author), Mulder, M. (author), Wentink, M. (author), TNO Defensie en Veiligheid (author)Following a previous study in the Simona simulator on perception of coherent visual and inertial cues in a flight simulator, an experiment is performed in the Desdemona simulator to investigate the influence of the frequency of visual and inertial stimuli on the limits of the perceived coherence zone. The coherence zone is defined as the range...conference paper 2010
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Vos, J. (author), Houben, M.M.J. (author), van der Ploeg, F. (author), Buikema, E. (author)The objective of the present laboratory studies was to enable refinements of the current rating procedure for low frequency sounds. To increase our insight into a relevant spectral issue, groups of adjacent frequency bands around 40, 50, and 63 Hz were presented at various sound level combinations. It was concluded that an energy-based summation...conference paper 2010
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Belfroid, S.P.C. (author), Cargnelutti, M.F. (author), Schiferli, W. (author), van Osch, M.M.E. (author)To be able to assess the mechanical integrity of piping structures for loading to multiphase flow conditions, air-water experiments were carried out in a horizontal 1" pipe system. Forces and accelerations were measured on a number of bends and T-joint configurations for a wide range of operating conditions. Five different configurations were...conference paper 2010
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