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This paper introduces means for fatigue damage rates estimation using Laplace distributed multiaxial loads. The model is suitable for description of stresses containing transients of random amplitudes and locations. Explicit formulas for computing the expected value of rainflow damage index as a function of excess kurtosis are given for correlated loads. A Laplace model is used to describe variabi
Elasticity and damping are significant properties of rubber, taken advantage of in engineering applications. It is therefore important that the constitutive model accurately captures these aspects of the mechanical behavior. In the first part of the thesis a description of theory and experiments for determination of hyperelastic parameters required for finite element analysis is provided. Test sp
This chapter does not deal with any practical aspects of light measurement, only with theoretical concepts. The following concepts are explained: energy fluence , energy fluence rate, photon fluence, photon fluence rate and radiance, mol, as well as the following superflu-ous or obsolete terms and synonyms: actinic flux, space irradiance, scalar irradiance, spherical irradiance, vectorial irradian
Abstract not available
Background: Patients with alcohol and other drug use disorders (AOD) frequently have multiple social, physical, and mental health treatment needs, yet have difficulty accessing community services, including drug abuse treatment. One strategy for linking patients with AOD with relevant services is case management, where a single case manager is responsible for linking patients with multiple relevan
Popular Abstract in Swedish Bostäder och service svarar för hela 36 procent av Sveriges totala energianvändning, av detta står bostäder och lokaler för ungefär 86 procent. Den svenska riksdagen har antaget EU: s klimat-och energipolitiska mål som skall nås till 2020, som kallas "20-20-20"-målen. EU:s 20-20-20-mål innebär att vi ska minska klimat¬påverkan med 20 procent, uppnå 20 procent förnybar eUsing energy at low-quality levels opens up new possibilities for low-energy houses. Low-quality energy can be heat at a temperature that is close to that of its surrounding, and can be used, for example, to pre-heat ventilation air or domestic hot water. Pre-heating the incoming outdoor air reduces the need to heat ventilation and reduces the need for high-quality energy such as electricity or he
Antenna selection is a promising technique for reducing complexity of multiple-antenna (MIMO) systems. In antenna selection, more antenna elements than RF transceiver chains are available for up-conversion and down-conversion. A subset of the available antenna elements is selected and connected to the RF chains. The reduction in the number of RF chains helps to reduce the implementation cost of mu
The optical design for the proposed Euro50 extremely large telescopewith integrated adaptive optics (AO) is presented. For atmosphericturbulence correction, we propose using single and dual-conjugate AOsystems working with natural and laser guide stars. The corrective shapeof the deformable mirrors (DMs) is derived from an analytical algorithmbased on minimization of the sum of the residual power
A PID design method is presented. The work done is part of anattempt to find an automatic tuning algorithm for two times two systems inthe process industry. The method tries to minimize the impact of load disturbances. The method was mainly developed because previous designmethods with the same objectives could not handle the processesobtained in decoupled systems.
Popular Abstract in Swedish Syftet med detta arbete har varit att utveckla nya, stabila bränsleelektroder till bränsleceller baserade på fasta oxider, SOFC (solid oxide fuel cells). Vi har undersökt olika keramiska material eller kompositer med lovande egenskaper för att användas på anodsidan av bränslecellerna. För att förbättra redox-stabiliteten så ska bränsleelektroden företrädesvis inte innehThe purpose for this work has been to develop new robust fuel electrodes for solid oxide fuel cells (SOFC). The aim was to find suitable ceramic materials or composites with promising properties for the use as SOFC anodes. Preferably, the electrode should not contain any metal (or at least a metal should not be a major component) in order to improve the redox properties. The present work focuses o
A wavelet generator producing 100 ps short pulses at 60 GHz is presented. The wavelet generator consists of a gated tunnel diode (GTD) integrated in parallel with an inductor. This forms a negative differential conductance (NDC) oscillator with the ability to switch the NDC property on and off, which makes it possible to generate short pulses. In the experiments described, the wavelet generator dr
