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Sekar, S.A. (author), Hunt, A. (author)
Additive manufacturing of sensors and actuators together with structural materials and electronics will make it possible to fabricate innovative system designs that are overly laborious to realise with conventional methods. While printing of the structural materials and electronics are advancing fast, the additive manufacturing methods for...
journal article 2024
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Jaarsma, Victor (author)
This research investigates the implementation of electroactive polymer (EAP) actuators for the propulsion of a robotic fish. An efficient manufacturing procedure is developed which uses a combination of stencil printing and inkjet printing to manufacture P(VDF-TrFE-CTFE) actuators. The influence of layer thicknesses is studied theoretically and...
master thesis 2023
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Baelz, K.K. (author), Hunt, A. (author)
To facilitate smart material transducer research and application, it is important to develop fabrication processes that are widely accessible and compatible with additive manufacturing (AM) techniques. This work addresses inkjet printing and material selection in the fabrication of bending cantilever actuators based on the P(VDF-TrFE-CTFE)...
conference paper 2023
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Joosten, Sebastiaan (author)
Inspired by phenomena in the plant world, a<br/>meteoro-sensitive rotational actuator is developed. The design<br/>uses a hygro-active shell, whose water-based swelling is restricted<br/>at selective locations to form a helicoid structure. The influence<br/>of geometrical parameters on the performance is investigated<br/>using a numerical...
master thesis 2020
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Bälz, Koona-Garth Keith (author)
Inkjet printing offers an additive manufacturing method for the production of thin films. A variety of inkjet printed materials can be printed, including conductive and electroactive materials. Existing inkjet printed ferroelectric polymer actuators all utilize silver conductive layers and P(VDF-TrFE) for the electroactive layer. This thesis...
master thesis 2019
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Mahon, T.R. (author), Stuber, V.L. (author), Ammu, S.K. (author), van der Zwaag, S. (author), Groen, W.A. (author), Hoeks, T. (author), Guhathakurtha, S. (author)
While most of the work on piezoelectric composites focuses on methods to reduce the dielectric constant of the composite (for better sensor and energy harvesting performance), for haptic feedback and actuator applications the opposite is desirable. We present here a study of the effect of adding a second ceramic phase (BaTiO3 nanoparticles)...
conference paper 2019
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Lopez Romero, M.A. (author), Prieto-Arranz, Javier (author), Traver, Jose Emilio (author), Hunt, A. (author), Hassan HosseinNia, S. (author), Tejado, Ines (author), Vinagre, Blas M. (author)
Ionic polymer metal composite (IPMC) actuators have promising applications in robotics and medicine in a not distance future, which will require a big knowledge in different fields, such as, manufacturing, material characterization and control theory. In this paper, frequency response of several IPMC actuators, cut from the same bulk IPMC sheet...
conference paper 2018
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Zong, H. (author), Kotsonis, M. (author)
The performance of a two–electrode plasma synthetic jet actuator (PSJA) is investigated for a wide range of dimensionless actuation frequencies (f*) using high-speed phase-locked Particle Imaging Velocimetry (PIV) measurements. The jet-induced velocity fields in the axisymmetric plane are measured during both...
journal article 2017
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Broxterman, Stefan (author)
Topology optimization is a strong approach for generating optimal designs which cannot be obtained using conventional optimization methods. Improving structural characteristics by changing the internal topology of a design domain has been fascinating scientists and engineers for years. Topology optimization can be described as a distribution of...
master thesis 2017
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Klop, Wouter (author)
A humanoid robot is being developed, intended to operate robustly in a typical day-to-day human environment. Its ability to react quickly to stochastic disturbances, especially its ability to avoid falling, termed stability in this context, is of prime importance. The choosing of a suitable actuator that affords such stability is seen as a...
master thesis 2017
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Huang, X. (author)
Silicon wafers are getting bigger and bigger in the production line, aiming for faster manufacturing, lower cost and higher yield. The handling/transportation technique is becoming more and more critical during the production. As the wafer is being handled with physical contact there is always risk of damage and contemination coming from the...
master thesis 2016
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Lara-Quintanilla, A. (author)
The design of aerodynamic airfoils are optimized for certain conditions. For instance, the shape of the wings of fixed-wing aircrafts are designed and optimized for a certain flight condition (in terms of altitude, speed, aircraft weight, etc.). However, these flight conditions vary significantly during the flight. Currently, aircraft are...
doctoral thesis 2016
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Zong, H. (author), Kotsonis, M. (author)
An experimental characterisation study of a large-volume three-electrode plasma synthetic jet actuator (PSJA) is presented. A sequential discharge power supply system is used to activate the PSJA. Phase-locked planar particle image velocimetry (PIV) and time-resolved Schlieren imaging are used to characterise the evolution of the induced flow...
journal article 2016
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Zong, H. (author), Kotsonis, M. (author)
A simplified model is established to estimate the jet exit density variation of a plasma synthetic jet actuator (PSJA) driven by a capacitive arc discharge. This model, in conjunction with phase-locked planar particle imaging velocimetry (PIV) measurements, enables the calculation of jet mechanical energy for different operating conditions....
journal article 2016
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Wiwattananon, P. (author), Bergsma, O.K. (author), Bersee, H.E.N. (author)
Piezoelectric materials possess nonlinear behavior when actuated in a large electric field and show a large deflection when embedded inside a composite laminate such as a LIghtweight Piezoelectric Composite Actuator. Linear and nonlinear COMSOL multi-physics finite element models were developed and validated using the actuation response of three...
journal article 2016
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Koomen, T.J. (author)
Shape Memory Alloy (SMA)-based actuators are versatile actuators with a high power-to-weight ratio. These actuators are ideal for applications such as smart wings and smart rotors. However, SMA-based actuators are generally difficult to control, due to a low bandwidth and a hysteretic and non-linear response. The general control framework, or...
master thesis 2015
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Bos, P. (author)
The food and beverage industry often uses pneumatic cylinders to enable machinery in food processing plants to move. The requirements around hygiene are strict. This is to prevent consumer food from getting contaminated with pathogenic microorganisms. The food itself and the intensive chemical cleaning products used, form a harsh environment for...
master thesis 2015
document
Scharff, R.B.N. (author)
A robotic hand to demonstrate how the 3D-printing of flexible air chambers to create air pressure sensors and actuators can be used to improve human-robot interaction.
master thesis 2015
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Bijster, R.J.F. (author)
At the chair of Space Systems Engineering, students and staff work on the development of small propulsion systems in a wide thrust capability. Especially in recent years low thrust propulsion systems have gained an increased amount of interest in the entire department of Space Engineering. To support the development of these propulsion systems,...
master thesis 2014
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Lu, Y. (author)
Micro Air Vehicle (MAV) is a group of unmanned aerial vehicles that is autonomous and with a size restriction. Thanks to its possible application ranging from civil search-and-rescue missions to military surveillance missions, there is rising interest in the MAV related topics. From the previous work of the Atlanta Project, a vehicle is designed...
master thesis 2013
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