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INGLÊS

Functional Compliance Of Multifunctional Bondlines With Disbond Arrest And Health Monitoring Features For Safe And Efficient Composite Joints

de Julian Steinmetz

~~211,34€~~ 190,21€ 10% IMEDIATO

DISPONIBILIDADE IMEDIATA

 Therefore, this thesis investigates the potential of multifunctional bondlines, combining structural bonding, disbond arrest features, and structural health monitoring. The approach is adding discrete multifunctional disbond arrest features, functionally integrating disbond arrest and sensor functions, to epoxy bondlines.
INGLÊS

Design Load Allowables For Composite Plates Exposed To Thermomechanical Loads

de Martin Liebisch

~~175,73€~~ 158,16€ 10% IMEDIATO

portes grátis

 Current methodologies used to design lightweight structures made of CFRP materials under static thermomechanical conditions often rely on simplified approaches.
INGLÊS

Functional Compliance Of Multifunctional Bondlines With Disbond Arrest And Health Monitoring Features For Safe And Efficient Composite Joints

de Julian Steinmetz

~~216,29€~~ 194,66€ 10% IMEDIATO

portes grátis

 Therefore, this thesis investigates the potential of multifunctional bondlines, combining structural bonding, disbond arrest features, and structural health monitoring. The approach is adding discrete multifunctional disbond arrest features, functionally integrating disbond arrest and sensor functions, to epoxy bondlines.
INGLÊS

Development Of A Self-Sufficient, Wireless Sensor Node Using The Outer Fml Layer As An Antenna

de Sarah Bornemann

~~198,09€~~ 178,28€ 10% IMEDIATO

DISPONIBILIDADE IMEDIATA

 <p>This book presents an investigation on integrating wireless sensor nodes including their antennas into fiber metal laminates (FMLs) for the purpose of enabling wireless, material-integrated structural health monitoring.</p><p>Within the scope of this work, a digital sensor node is presented, which can be fully integrated into a conductive host material. A stainless steel antenna supplies the system with sufficient power to provide the functions required for its intended use. This system enables the wireless readout of sensor data for the detection of damage in FMLs. The application focuses on aerospace components, for the detection of damage in the inner material layers, which are not or only hardly detectable by optical inspection methods. Guided ultrasonic waves in the form of Lamb waves are used for this. The flexible electronics are inserted into the layers of the target material, while the associated antenna is cut into the outer metal layer. This turns the outer metal layer, which would prevent wireless communication from inside the laminate, into an advantage, as the need for an additional, external antenna is eliminated. Two fundamentally different principles can be used as the sensor element. Piezoelectric sensors were already used extensively in structural health monitoring using ultrasound and recently developed piezoresistive sensors, which are designed to be very small, making them highly suitable for material integration. Both types of sensors can be read out with the presented system so that the most appropriate approach can be chosen depending on the application. The suitability of the wireless sensor system for its intended purpose is verified by material-integrated measurements. At the end of this work, it is shown that the raw data of the measurements reproducibly provide a sufficient resolution of the sensor signal to manually identify changes caused by applied reversible, artificial pseudo-defects from reference measurements without any damage. </p><p>The intended audience of this book are people from the field which are familiar with the basic concepts of electrical engineering or similar regions, embedded system enthusiasts and all readers who like to follow the process of a complete wireless electronic system design from requirements analysis to final material-integrated measurement demonstrations.</p>
INGLÊS

Design Load Allowables For Composite Plates Exposed To Thermomechanical Loads

de Martin Liebisch

~~171,59€~~ 154,43€ 10% IMEDIATO

DISPONIBILIDADE IMEDIATA

 Current methodologies used to design lightweight structures made of CFRP materials under static thermomechanical conditions often rely on simplified approaches.
INGLÊS

Ultraviolet Light Curable Piezoelectric Multi-Phase Composites

de Rytis Mitkus

~~175,73€~~ 158,16€ 10% IMEDIATO

portes grátis

 This book offers extensive knowledge and characterization methods for Ultraviolet light curable piezoelectric 0-3 composites for researchers and industry.
INGLÊS

Ultraviolet Light Curable Piezoelectric Multi-Phase Composites

de Rytis Mitkus

~~171,59€~~ 154,43€ 10% IMEDIATO

DISPONIBILIDADE IMEDIATA

 This book offers extensive knowledge and characterization methods for Ultraviolet light curable piezoelectric 0-3 composites for researchers and industry.
INGLÊS

Dynamic And Fatigue Assessment Of Heavy-Duty Engine Valves

de Angelina Eret

~~175,73€~~ 158,16€ 10% IMEDIATO

portes grátis

 Furthermore, a bold valve secondary dynamic in the form of valve bending vibrations is observed on the exhaust valves of heavy-duty engines increasing the valve load even more. With respect to a predictive approach, the determination of valve dynamic and valve loads is based on a multibody simulation model of the valve train.
INGLÊS

A Two-Dimensional Piezoresistivity Model For Anisotropic Materials And Its Application In Self-Sensing Of Carbon Fiber Reinforced Plastics

de Patrick Scholle

~~175,73€~~ 158,16€ 10% IMEDIATO

portes grátis

 The developed model newly allows to quantify the electricpotential changes in specimens with arbitrary geometrical dimensions and electric anisotropy. Furthermore, this thesis discusses a set of experimental results on the piezoresistive properties of unidirectional CFRP made with the pultrusion process.
INGLÊS

A New Kirchhoff-Love Beam Element And Its Application To Polymer Mechanics

de Matthias C. Schulz

162,21€ + 10% EM CARTÃO

portes grátis

 The novel finite element formulations fall into the category of geometrically exact Kirchhoff-Love beams. Furthermore, the numerical efficiency of the new beam formulations is compared to other beam elements that allow for or suppress shear deformation.
INGLÊS

Dynamic And Fatigue Assessment Of Heavy-Duty Engine Valves

de Angelina Eret

~~171,59€~~ 154,43€ 10% IMEDIATO

DISPONIBILIDADE IMEDIATA

 Furthermore, a bold valve secondary dynamic in the form of valve bending vibrations is observed on the exhaust valves of heavy-duty engines increasing the valve load even more. With respect to a predictive approach, the determination of valve dynamic and valve loads is based on a multibody simulation model of the valve train.
INGLÊS

A Two-Dimensional Piezoresistivity Model For Anisotropic Materials And Its Application In Self-Sensing Of Carbon Fiber Reinforced Plastics

de Patrick Scholle

175,73€ + 10% EM CARTÃO

portes grátis

 The developed model newly allows to quantify the electricpotential changes in specimens with arbitrary geometrical dimensions and electric anisotropy. Furthermore, this thesis discusses a set of experimental results on the piezoresistive properties of unidirectional CFRP made with the pultrusion process.
INGLÊS

A New Kirchhoff-Love Beam Element And Its Application To Polymer Mechanics

de Matthias C. Schulz

162,21€ + 10% EM CARTÃO

portes grátis

 The novel finite element formulations fall into the category of geometrically exact Kirchhoff-Love beams. Furthermore, the numerical efficiency of the new beam formulations is compared to other beam elements that allow for or suppress shear deformation.
INGLÊS

Two-Dimensional Piezoresistivity Model For Anisotropic Materials And Its Application In Self-Sensing Of Carbon Fiber Reinforced Plastics

de Patrick Scholle

172,24€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 The developed model newly allows to quantify the electricpotential changes in specimens with arbitrary geometrical dimensions and electric anisotropy. Furthermore, this thesis discusses a set of experimental results on the piezoresistive properties of unidirectional CFRP made with the pultrusion process.
INGLÊS

Characterisation Of The Mechanical Properties Of Heat-Induced Protein Deposits In Immersed Cleaning Systems

de Jintian Liu

171,59€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 <p>During heat treatment in dairy production, the rapid formation of heat-induced fouling deposits on the plant surface leads to reduced efficiency of heat transfer. Therefore, a regular cleaning process is required to soften the heat-induced protein deposits and then remove them from the plant surface. The mechanical property of the deposits is one of the key issues of the cleaning mechanisms since the non-fractured behaviour dominates the deformation of the fouling layer and the failure behaviour has a great impact on the cohesive removal of fouling deposits. Considering the complicated geometry of fouling deposits and their irregular distribution, indentation experiments were carried out on various kinds of protein deposits. The experimental results reveal the significant influence of the thickness of fouling deposits on their mechanical behaviour and the time-dependent nonlinear behaviour of the deposits.</p><p></p><p>Furthermore, heat-induced whey protein gel was used as the modelmaterial for fouling deposits and the non-fractured and fracture behaviour was characterized using compression and wire cutting experiments, respectively. The material parameters identified using the inverse finite element method allow the prediction of fracture behaviour under localized external loads and provide a deeper insight into cohesive removal. To investigate the softening effect during caustic washing, tensile experiments were conducted on chemically treated and untreated whey protein gels. Adequate chemical degradation leads to a softer mechanical response and increased stress relaxation, making whey protein gels more flowable and more resistant to tensile deformation. The experimental results provide useful data on the failure behaviour of chemically treated whey protein gels.</p><p></p><p></p>
INGLÊS

New Kirchhoff-Love Beam Element And Its Application To Polymer Mechanics

de Matthias C. Schulz

158,34€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 The novel finite element formulations fall into the category of geometrically exact Kirchhoff-Love beams. Furthermore, the numerical efficiency of the new beam formulations is compared to other beam elements that allow for or suppress shear deformation.
INGLÊS

Triply Periodic Minimal Surface Structures For Laminar Flow Control

de Hendrik Traub

~~175,73€~~ 158,16€ 10% IMEDIATO

portes grátis
INGLÊS

Development Of A Self-Sufficient, Wireless Sensor Node Using The Outer Fml Layer As An Antenna

de Sarah Bornemann

~~202,77€~~ 182,49€ 10% IMEDIATO

portes grátis
INGLÊS

Characterisation Of The Mechanical Properties Of Heat-Induced Protein Deposits In Immersed Cleaning Systems

de Jintian Liu

~~175,73€~~ 158,16€ 10% IMEDIATO

portes grátis
INGLÊS

Characterisation Of The Mechanical Properties Of Heat-Induced Protein Deposits In Immersed Cleaning Systems

de Jintian Liu

175,73€ + 10% EM CARTÃO

portes grátis
INGLÊS

Pressure-Actuated Cellular Structures For Adaptive Wingtips

de Patrick Meyer

170,33€

portes grátis

ESGOTADO OU NÃO DISPONÍVEL

 Folding wingtips (FWTs) address these challenges by incorporating a hinge at the outboard wing section, enabling the wingtip to fold during ground operations or specific flight scenarios.
INGLÊS

Dynamic And Fatigue Assessment Of Heavy-Duty Engine Valves

de Angelina Eret

158,16€

portes grátis

ESGOTADO OU NÃO DISPONÍVEL

 Furthermore, a bold valve secondary dynamic in the form of valve bending vibrations is observed on the exhaust valves of heavy-duty engines increasing the valve load even more. With respect to a predictive approach, the determination of valve dynamic and valve loads is based on a multibody simulation model of the valve train.

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