Sökning: "tensile properties"

Visar resultat 21 - 25 av 376 uppsatser innehållade orden tensile properties.

  1. 21. En studie av TPMS-baserade nätverksstrukturer tillverkade i PA11 : A study of TPMS-based network structures made in PA11

    Uppsats för yrkesexamina på grundnivå, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Johan Sundbom; Jakob Delahunt; [2023]
    Nyckelord :Triply Periodic Minimal Surfaces TPMS ; Gyroid structure; material testing; FEA; compression test; Triply Periodic Minimal Surfaces TPMS ; gyroidstruktur; materialprovning; FEM; kompressionsprov;

    Sammanfattning : SammanfattningTriply Periodic Minimal Surface (TPMS)-baserade nätverksstrukturer har snabbt blivit populära i flera tillämpningar, exempelvis medicinska implantat, värmeväxlare, stötdämpareoch lättviktskonstruktioner. Gyroidstrukturen är förmodligen den mest kända och använda, men en mängd varianter existerar med extremt goda egenskaper vid additiv tillverkning. LÄS MER

  3. 22. Wet Spinning of Cellulose-Lignin Precursor for Carbon Fibers : Effect of Coagulation Bath Composition & Spin Finish

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad mekanik

    Författare :Julia Sundmark; [2023]
    Nyckelord :Carbon fiber; Cold alkali; Cold NaOH; lignin; cellulose; wet spinning; Kolfiber; kallalkali; lignin; cellulosa; våtspinning;

    Sammanfattning : Carbon fibers (CF) are a material with a composition of over 90% carbon, which has high mechanical properties and low density. This unique combination of properties makes it requirable in applications such as vehicles, aerospace, wind power, and space industries. Commercially made CF are made using the fossil raw material polyacrylonitrile (PAN). LÄS MER

  4. 23. Characterisation of an Additively Manufactured Self-Sensing Material Using Carbon Fibre Sensors

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Alain Williamson; [2023]
    Nyckelord :Additive Manufacturing; Self-Sensing Material; Carbon Fibre Sensors; Structural Health Monitoring; Space Applications; 3D-Printed Continuous Carbon Fibre Filament; Strain Sensor; Mechanical Properties; Electromechanical Properties; Tensile Strength; Failure Strain; Base Resistance; Gauge Factor; Linearity; Systematic Literature Review; Material Selection; Mechanical Design; Material Development; Feasibility Study;

    Sammanfattning : Increasing demand for structural health monitoring in space highlights the need to make the creation of these systems more accessible. This study investigates the potential of additive manufacturing to achieve this goal by characterizing a self-sensing material made of a commercially available 3D-printed continuous carbon fibre filament. LÄS MER

  5. 24. The Effect on Mechanical Properties in Biochar Replaced Cement & Aggregate in Concrete Before and After Fire Exposure

    Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Felix Hansen; Mathias Berglund; [2023]
    Nyckelord :Biochar; Concrete; Sintering; Fire; Mechanical properties; Sustainability; Cement; Biochar in concrete; Building industry; Concrete exposed to fire.; Biokol; Betong; Sintring; Eld; Mekaniska egenskaper; Hållbarhet; Cement; Biokol i betong; Byggindustri; Brandexponerad betong.;

    Sammanfattning : Concrete is good as a construction material regarding fire and its properties regarding strength. However, the concrete expands and cracks due to fire resulting in structural damage. According to the literature the concrete usually loses its strength during and after fire exposure due to themechanical and physical changes. LÄS MER

  7. 25. Cryogenic properties of additive manufactured austenitic stainless steels for space applications

    Master-uppsats, Luleå tekniska universitet/Materialvetenskap

    Författare :Patricio Piantanida; [2023]
    Nyckelord :austenitic stainless steel; additive manufacturing; cryogenic;

    Sammanfattning : The mechanical properties of three austenitic stainless steel alloys, namely 21-6-9, 316L and a modifed 316, fabricated via laser powder bed fusion, have been studied. From the results previously obtained through tensile tests at room and cryogenic temperatures, their strength and ductility were compared against similar conventionally processed materials. LÄS MER