Sökning: "Impact Testing"

Visar resultat 1 - 5 av 226 avhandlingar innehållade orden Impact Testing.

  1. 1. Neck injuries in rear impacts : Dummy neck development, dummy evaluation and test condition specifications

    Detta är en avhandling från Göteborg : Chalmers University of Technology

    Författare :Astrid Linder; Chalmers tekniska högskola.; Chalmers University of Technology.; Chalmers tekniska högskola.; [2001]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Road: Components of the vehicle; Road: Components of the vehicle; Neck; Injury; Anthropometric dummy; Severity; Impact test; Rear end collision; Seat; Mathematical model; Velocity; Thesis; Optimization; Mathematical neck models; Rear impact tests; Biomechanics; Teknisk mekanik; Engineering mechanics; BioRID; consumer test; dummy neck; impact severity; low-velocity; mathematical model; neck injuries; rear impact; seat design; whiplash;

    Sammanfattning : The objective of the work underlying this thesis was firstly to develop a neck for a new rear impact dummy, to evaluate the complete dummy and to specify test conditions for a consumer test with attention to AIS 1 neck injuries in rear impacts. In the development of the dummy neck, a mathematical neck model was developed and evaluated. LÄS MER

  2. 2. Aircraft composites and aeroelastic tailoring

    Detta är en avhandling från Stockholm : KTH

    Författare :Jakob Kuttenkeuler; KTH.; [1998]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polymer composites; testing; resin; transfer molding; RTM; process parameters; mechanical properties; aircraft; impact damage; BVID; modal; inverse method; uncertainties; aeroelasticity; optimization; wind tunnel; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : This thesis treats various aspects of structural polymercomposites in aircraft applications. The mechanical performanceand quality of resin transfer molded (RTM) carbon fiberreinforced epoxy composites is studied. LÄS MER

  3. 3. Toughness of Tool Steel

    Detta är en avhandling från Uppsala : Institutionen för teknikvetenskaper

    Författare :Henrik Jesperson; Uppsala universitet.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Toughness; Tool Steel; Heat Treatment; Temperature; Energy absorption; Impact Testing; Fracture Toughness Testing; Non-metallic Inclusions; Carbides; Nitrides; Statistics; TECHNOLOGY; TEKNIKVETENSKAP; Teknisk fysik med inriktning mot materialvetenskap; Engineering Science with specialization in Materials Science;

    Sammanfattning : Toughness is the ability to resist tensile stresses in the presence of a notch or crack. Sometimes gross cracking of industrial tools, mould or dies, occurs due to insufficient toughness. As the economic consequences of the gross cracking are serious, the toughness of industrial tool material, generally tool steel, is of paramount importance. LÄS MER

  4. 4. Significance of Human Papillomavirus (HPV) Analysis for the Detection of Precancerous Cervical Lesions Impact of Self Sampling

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Karin Sanner; Uppsala universitet.; [2013]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; human papilloma virus; HPV; self-sampling; organized screening; cervical cancer screening; Obstetrik och gynekologi; Obstetrics and Gynaecology;

    Sammanfattning : Cervical cancer is the second most common cancer, with about 500 000 new cases per year among women worldwide. With a well-organized screening programme the number of cases can be reduced by more than 50%. In spite of having such a screening programme there are still around 450 new cases yearly in Sweden. LÄS MER

  5. 5. Pictures and a Thousand Words Learning Psychology through Visual Illustrations and Testing

    Detta är en avhandling från Stockholm : Department of Psychology, Stockholm University

    Författare :Ann-Sofie Jägerskog; Stockholms universitet.; [2015]
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; learning; multimedia learning; retrieval practice; testing effect; visual illustration; learning styles; visualiser; verbaliser; Subject Learning and Teaching; ämnesdidaktik;

    Sammanfattning : For teachers and students to be able to make informed decisions about how to best improve learning, it is important to compare learning strategies that are known to be effective. Both multimedia learning, based on the notion that individuals learn better from words and pictures presented together than from words alone, and retrieval practice, based on the idea that retrieving knowledge from the memory is an active process that has a beneficial impact on learning, have been found robust learning strategies in earlier research. LÄS MER