Sökning: "helmet testing"

Visar resultat 1 - 5 av 15 uppsatser innehållade orden helmet testing.

  1. 1. MECHANICAL PROPERTIES AND TESTING OF A HYBRID COMPOSITE MATERIAL

    Magister-uppsats, Högskolan i Halmstad/Akademin för företagande, innovation och hållbarhet

    Författare :ARJUN ANIL; JEEVAN JOSEPH; [2023]
    Nyckelord :;

    Sammanfattning : A composite is a structural material that consists of two or more combined constituents at amacroscopic level and are not soluble in each other. One constituent is called the reinforcingphase and the other in which it is embedded is called the matrix. The reinforcing phasematerial may be in the form of fibres, particles, or flakes to name a few. LÄS MER

  3. 2. A Comparative study of YOLO and Haar Cascade algorithm for helmet and license plate detection of motorcycles

    Kandidat-uppsats, Blekinge Tekniska Högskola/Institutionen för datavetenskap

    Författare :Anusha Jayasree Mavilla Vari Palli; Vishnu Sai Medimi; [2022]
    Nyckelord :Accuracy; Haar Cascade Classifier; Helmet Detection; License Plate Detection; YOLOv3 algorithm.;

    Sammanfattning : Background: Every country has seen an increase in motorcycle accidents over the years due to social and economic differences as well as regional variations in transportation circumstances. One common mode of transportation for those in the middle class is a motorbike.  Every motorbike rider is legally required to wear a helmet when driving a bike. LÄS MER

  4. 3. Determining whether the Hövding bicycle airbag is secure against cyber attacks

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Henrik Mellin; [2022]
    Nyckelord :Penetrationtesting; Internet of Things; Threatmodeling; BluetoothLowEnergy; Firmware analysis; Reverse engineering; Penetrationstestning; Sakernasinternet; Hotmodellering; BluetoothLowEnergy; Analys of fast programvara; Baklängeskonstruktion;

    Sammanfattning : This thesis is about cyber-security and penetration testing. More specifically it concerns penetration testing of a Hövding bicycle airbag which is a smart alternative to a traditional bicycle helmet. The thesis focuses on exploiting Bluetooth Low Energy, firmware analysis and reverse engineering. LÄS MER

  5. 4. Evaluation of Coefficient of Friction in Oblique Helmet Impacts: An Experimental and Numerical Study

    Master-uppsats, KTH/Hållfasthetslära

    Författare :Philip Singh; [2022]
    Nyckelord :FE model; friction; helmet impact; LS-DYNA; FE-modell; friktion; hjälmislag; LS-DYNA;

    Sammanfattning : The focus of this thesis was to increase the knowledge in the area of "dynamic friction" during oblique helmet impacts, both experimentally and numerically. Physical experiments have been performed with multiple helmets, different angles of the anvil and different surface materials, with results of impact forces from the anvil and accelerations of the head. LÄS MER

  7. 5. Linear Impact of Bicycle Helmet – Experimental Testing and FE-modelling

    Master-uppsats, KTH/Hållfasthetslära

    Författare :Ludvig Dahlin; Ebba Larsson Regnström; [2022]
    Nyckelord :FEM; Finite element method; bicycle helmet; impact modelling; solid mechanics; FEM; Finita element-metoden; cykelhjälm; islagsmodellering; hållfasthetslära;

    Sammanfattning : The aim with this master thesis was to set up a FE-simulation of an impact test of a bike helmet in LS-DYNA that correlates well with the peak acceleration score of a real life impact test. Furthermore, a parametric study has been performed in LS DYNA to investigate the robustness of the model, as well as to see which parameters have a great influence on the peak acceleration score. LÄS MER