Search for dissertations about: "Weibull distribution"

Showing result 1 - 5 of 41 swedish dissertations containing the words Weibull distribution.

  2. 1. Analysis of transverse cracking in cross-ply laminates: Weibull distribution based approach

    Author : Vivek Richards Pakkam Gabriel; Patrik Fernberg; Mohamed Loukil; Spyros Tsampas; Erik Marklund; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Intralmainar cracking; Weibull distribution; Failure stress; Monte Carlo simulation; Fatigue loading; Quasi-static loading; Polymera kompositmaterial; Polymeric Composite Materials;

    Abstract : Fiber reinforced polymer composite laminates make up more than 50% of modern aircrafts. Such composite laminates are exposed to various environmental and in-service thermo-mechanical load conditions. READ MORE

  4. 2. Condition measuring and lifetime modelling of disconnectors, circuit breakers and other electrical power transmission equipment

    Author : Per Westerlund; Patrik Hilber; Tommie Lindquist; William Q Meeker; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reliability; maintenance; condition monitoring; disconnector; circuit breaker; Weibull distribution; prediction; risk analysis; decision making; beta distribution; Electrical Engineering; Elektro- och systemteknik;

    Abstract : The supply of electricity is important in modern society, so the outages of the electric grid should be few and short, especially for the transmission grid. A summary of the history of the Swedish electrical system is presented. The objective is to be able to plan the maintenance better by following the condition of the equipment. READ MORE

  5. 3. Modelling the Variability of Bending Strength in Structural Timber - Length and Load Configuration Effects

    Author : Tord Isaksson; Avdelningen för Konstruktionsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; code; reliability-based design; Weibull; test standard; load configuration effect; length effect; weak section; machine grading; visual grading; variability; Structural timber; bending strength; simulation; monte carlo simulation.; Building construction; Byggnadsteknik;

    Abstract : The load carrying capacity of a beam of structural timber is dependent both on the span of the beam and the type of loading. The longer the beam and the more uniform the moment distribution, the lower the load carrying capacity. This phenomenon is due to the variability of material properties within a piece of timber. READ MORE

  6. 4. Annealed Glass Failure Modelling : A Weakest-Link Approach with Statistical Analysis

    Author : David Kinsella; Byggnadsmekanik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; glass strength; structural glass; Weibull distribution; weakest-link system; statistical analysis; experimental tests; numerical modelling; finite element method; fracture mechanics;

    Abstract : Novel and increased use of glass in building construction has been made possible, as a result of methods of mass production introduced during the 20th century and advanced computational structural analyses. With modern use of glass structures, a range of demands emerge which need to be addressed in the strength design process. READ MORE

  7. 5. Testing and estimation in labour supply and duration models

    Author : Niklas Karlsson; Umeå University; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; labour supply; quantity constraint; perceived tax scale; duration; specification test; distribution;

    Abstract : Estimation and testing in labour supply and unemployment duration models are studied. In the first two papers estimation techniques designed to account for quantity constraints and perceived tax scales are developed, while the remaining three papers focus on specification tests. READ MORE