Search for dissertations about: "large deflection"

Showing result 1 - 5 of 44 swedish dissertations containing the words large deflection.

  2. 1. Development of ultra-precision tools for metrology and lithography of large area photomasks and high definition displays

    Author : Lars Peter Ekberg; Lars Mattsson; Lars Stiblert; Richard Leach; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ultra precision 2D metrology; LCD-display; OLED-display; nm-resolution; random phase measurement; large area; photomask; acousto-optic deflection; self-calibration; Z-correction; absolute accuracy; uncertainty.; SRA - Production; SRA - Produktion;

    Abstract : Large area flat displays are nowadays considered being a commodity. After the era of bulky CRT TV technology, LCD and OLED have taken over as the most prevalent technologies for high quality image display devices. READ MORE

  4. 2. Load-Carrying Capacity of Steel Girders and Panels with Thin-Walled Trapezoidally Corrugated Webs

    Author : Ruoshan Luo; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; steel; finite element; thin-walled structures; girder; post-buckling; panel; trapezoidal corrugation; load-carrying capacity; optimal design; plasticity; spline finite strip; buckling; large deflection;

    Abstract : This thesis concerns the load-carrying capacity of steel girders and panels with thin-walled trapezoidally corrugated webs. Computer-based numerical methods are used as a tool and emphasis is placed on various parametric studies, covering geometric parameters, initial imperfections, material strain-hardening models, loading types and loading positions, and so forth. READ MORE

  5. 3. Ultra precision metrology : the key for mask lithography and manufacturing of high definition displays

    Author : Peter Ekberg; Lars Mattsson; Torgny Carlsson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ultra precision metrology; LCD-display; OLED-display; nm-resolution; large area; random phase measurement; acousto-optic deflection; scanning; 2D measurement; mask; CCD; CMOS; image processing; edge detection; TECHNOLOGY; TEKNIKVETENSKAP; Manufacturing engineering; Produktionsteknik;

    Abstract : Metrology is the science of measurement. It is also a prerequisite for maintaining a high quality in all manufacturing processes. In this thesis we will present the demands and solutions for ultra-precision metrology in the manufacturing of lithography masks for the TV-display industry. READ MORE

  6. 4. Development and results of the Swedish road deflection tester

    Author : Peter Andrén; Anders Eriksson; Anders Lenngren; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Other engineering mechanics; Övrig teknisk mekanik;

    Abstract : A project to construct a high-speed road deflection tester was initiated in the 1991. A mid-sized truck was used as a carrier for the first prototype. The results were promising and it was decided to build a full-size truck system. The new vehicle, based on a Scania R143 ML, was completed in 1997. READ MORE

  7. 5. Finite element methods for threads and plates with real-time applications

    Author : Karl Larsson; Mats G. Larson; Peter Hansbo; Umeå universitet; []
    Keywords : finite element method; real-time simulation; absolute nodal continuous formulation; large deformation; corotation; adaptive resolution; Kirchhoff-Love plate; reconstruction; discontinuous Galerkin; a priori error estimation; Mathematics; matematik;

    Abstract : Thin and slender structures are widely occurring both in nature and in human creations. Clever geometries of thin structures can produce strong constructions while using a minimal amount of material. READ MORE