Search for dissertations about: "permanent elongation"

Showing result 1 - 5 of 7 swedish dissertations containing the words permanent elongation.

  2. 1. Torque and Angle Controlled Tightening of Bolted Joints

    Author : Göran Toth; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; torque controlled tightening; deformation parameters; momentary elongation; deformation factor; torque; Bolted screwed joints; spring characteristic; Torx; torque and angle controlled tightening; hexalobular; final torque; snug torque; Taylor’s series expansions; preload; plastic deformation; permanent elongation; yield; friction diameter; plastic spring constant; clevis; turn-of-nut method; bearing surface pressure; twisting; Monte-Carlo simulations;

    Abstract : Reduced weight and fuel consumption, improved reliability and engine performance are the main requirements in the automotive industry of today. These requirements demand robust and optimized bolted joints, where a high amount of preload obtained by effective utilisation of the bolt is essential. READ MORE

  4. 2. Torque and angle controlled tightening over the yield point of a screw

    Author : Göran Toth; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; clevis; permanent elongation factor; Monte-Carlo simulations; bolted screwed joints; final preload; torque and angle controlled tightening; extreme-value method; plastic deformation; Taylor s series expansions; plastic spring constant of the screw; yield; elastic angle; momentary elongation factor; snug torque; torque controlled tightening; final torque; turn-of-nut method;

    Abstract : .... READ MORE

  5. 3. Craniofacial morphology and growth in the ferret: effects from alteration of masticatory function

    Author : Tailun He; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : INTRODUCTION: Our hypothesis is that any effects on craniofacial growth and morphology induced by altering the masticatory function will vary according to the species involved. The general aim of this thesis was to test the possible effects of altering the masticatory function on craniofacial growth and morphology, as well as features of masticatory muscles in ferrets. READ MORE

  6. 4. Effect of Physical Weathering on Mechanical Properties of Tailings

    Author : Juan Rodriguez; Kauko Kujala; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geoteknik; Soil Mechanics;

    Abstract : The mining activity produces minerals to supply to the modern society with commodities. During the ore refining process large amounts of tailings are generated as waste. Tailings are the result of crushing and wet milling, typically in the size range of sand to silt and angular in shape. READ MORE

  7. 5. Acute Achilles tendon rupture - The impact of calf muscle performance on function and recovery

    Author : Annelie Brorsson; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Achilles tendon rupture; Rehabilitation; Heel-rise; Function; Recovery; Calf muscle; Ankle biomechanics; Endurance; Jump; Sex differences;

    Abstract : There is an ongoing debate about the optimal treatment for patients with an acute Achilles tendon rupture. The overall purpose of this thesis was to acquire a greater knowledge of the way patients recover at different time points after the injury when treated with the currently recommended treatment protocols. READ MORE