Essays about: "helmet impact"

Showing result 1 - 5 of 12 essays containing the words helmet impact.

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

    University essay from KTH/Hållfasthetslära

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

    Abstract : 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. READ MORE

  3. 2. Linear Impact of Bicycle Helmet – Experimental Testing and FE-modelling

    University essay from KTH/Hållfasthetslära

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

    Abstract : 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. READ MORE

  4. 3. Fatigue testing machine : To simulate daily use on multi-directional impact protection systems in helmets

    University essay from KTH/Hållbar produktionsutveckling (ML)

    Author : Mathias Nyman; Susanna Johansson; [2021]
    Keywords : Fatigue testing machine; Technical Design; Product development; Product testing; Robotics; Utmattningsmaskin; Teknisk design; Produktutveckling; Produkttester; Robotik;

    Abstract : During the development process of a product, tests are typically conducted to ensure the quality of the features of the product before it is made available to the public. The scope of this project was to find a realistic and reliable way to test components in a Multi-Directional Impact Protection System (MIPS) in fully mounted helmets. READ MORE

  5. 4. Investigating the Potential of Jaw Protection to Reduce the Risk of Concussions in Ice Hockey : A Finite Element Study

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Katja Marie Berg Papworth; [2021]
    Keywords : Ice Hockey; Concussion; Jawguard; Finite Element; HIII;

    Abstract : Ice hockey is a sport with high velocities and a large number of impacts to the head. The high occurrence of concussions is being recognized, and both short and long term consequences have been found. READ MORE

  6. 5. Analysis and reconstruction of head kinematics during accidents in fast alpine skiing disciplines : Experimental research about the accuracy and drawbacks associated with a video analysis tool

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Nicolo Dall'Acqua; [2021]
    Keywords : Alpine Skiing; Helmet; Impacts; Kinematics; Safety; TBI; Alpin skidåkning; Hjälm; Kollisioner; Kinematik; Säkerhet; TBI;

    Abstract : Head injuries caused by impacts are among the most critical and dangerous types of accidents that can occur while practising sports. Alpine skiing is one of the activities with the highest incidence of head injuries. READ MORE