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Showing result 1 - 5 of 17 essays matching the above criteria.

  1. 1. Numerical analysis of a bearing strength in delaminated composite joint

    University essay from KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Author : Olavi Kukkonen; [2023]
    Keywords : Bearing strength; Single-lap shear; Delamination; Countersinking; Hole size;

    Abstract : Composite structures are commonly joined using adhesive or mechanical joints, withmechanical joints being preferred when components need to be removable for maintenancepurposes. However, the presence of mechanical joints introduces a discontinuity in theload path, which can serve as an initiation point for failure and needs to be taken intoaccount in the design of the joint. READ MORE

  3. 2. Study and optimization of a hexacopter's composite structure

    University essay from KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Author : Helena Delmotte; [2023]
    Keywords : Lightweight structure; Drone; Structural optimization; FEA; Lättviktsstruktur; Drönare; Strukturell optimering; FEA;

    Abstract : Nowadays, the forestry industry still uses heavy machinery damaging both the forest and the soil. The start-up AirForestry is currently developing a sustainable way to thin and harvest trees. With their 6.2m wide electric drone carrying a harvesting tool, they can reach, thin, cut and carry trees without the need for access roads. READ MORE

  4. 3. Enhancing the endurance of UAVs by the use of structural power composites: System-level study of a flying wing

    University essay from KTH/Lättkonstruktioner

    Author : Gustav Burman; [2021]
    Keywords : ;

    Abstract : This thesis studies the feasibility of integrating the novelStructural Battery (SB)[1] into the airframe of a UnmannedAerial Vehicle (UAV). The potential advantages in terms ofmass, range and endurance are studied.The aircraft performance is analysed using conventionalflight mechanics, modelled in Matlab and Xfoil. READ MORE

  5. 4. Development of ESD paperboard laminate : A material study with focus on coating and design

    University essay from Mittuniversitetet/Institutionen för naturvetenskap

    Author : Rebecka Larsson; [2021]
    Keywords : Iggesund Paperboard; Holmen; ESD; paperboard-packaging; coating; design; prototype; nanographite; nanocellulose; biobased materials; sustainable packaging.; Iggesund Paperboard; Holmen; ESD; kartongförpackning; bestrykning; design; prototyp; nanografit; nanocellulosa; biobaserade material; hållbar förpackning.;

    Abstract : Due to the rapid development of technology, electrical products are being shipped all over the world. The electronic components have gotten greater in capacity but are smaller in size, making them sensitive to electrostatic discharge (ESD). ESD packaging protects sensitive components from electrostatic discharge and electrical fields. READ MORE

  6. 5. Characterization of Magneto-Dielectric Materials for Microwave Devices

    University essay from Uppsala universitet/Fasta tillståndets elektronik

    Author : Joseph Lazraq Byström; [2020]
    Keywords : magneto-dielectric materials; permittivity; permeability; losses; antenna and filter miniaturization;

    Abstract : There is an increasing interest in using new composite materials in microwave devices, to reduce size and weight while maintaining similar performances. A new promising material group is named magneto-dielectric materials, which have the permittivity and permeability values both larger than one. READ MORE