Essays about: "dmta"

Found 5 essays containing the word dmta.

  1. 1. Thermo-Oxidative Degradation of High Temperature Polyimide Composites : Characterization and Modeling of Composites Affected by an Extreme Environment

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Magnus Persson; [2016]
    Keywords : Polyimide composite material; thermal and oxidative degradation; glass transition temperature; stiffness modeling;

    Abstract : Carbon fiber (CF) 8-harness satin weave, T650/Neximid system of [(+45/-45)/(0/90)]2S and [(0/90)]4S layup was manufactured using resin transfer molding (RTM). The material was cut into 3-point bending specimens and treated for 24 hours in a burn oven at T=(320,350,375,400,450 & 500)°C. READ MORE

  3. 2. Textile Actuator Fibres : Investigation in materials and methods for coiled polymer fibre muscles

    University essay from Akademin för textil, teknik och ekonomi

    Author : Rebecca Melvinsson; [2015]
    Keywords : Textile actuators; Soft robots; Coiled muscles; PVDF; SMP; Fibre Anisotropy; Thermal actuation; α-relaxation;

    Abstract : This thesis contains an investigation in materials and methods for coiled polymer muscles where the end application in mind is to be integrated in a textile structure such as an exo-skeleton glove. Previous artificial muscle fibres have proved little success due to performance, cost and scalability. READ MORE

  4. 3. Investigation and Simulation of the Heating Effects in Sandwich Cores During Vibrational Loading

    University essay from KTH/Lättkonstruktioner

    Author : Jacob Langer; [2013]
    Keywords : ;

    Abstract : GKN Aerospace Engine Systems specializes in large load carrying static structuresfor aero engines and is, as part of a light weight strategy, developing design andmanufacturing technology to be able to complement the current metallic product offerwith composite fan guide vane structures. Fan vanes in modern engines are structuraland to meet the requirements for low weight in the aircraft industry, it is necessary todesign the vane as a sandwich structure. READ MORE

  5. 4. Mechanical and Thermal Characterizations of Biobased Thermoset Resins from Soybean Oil Reinforced with Natural Fiber Using Vacuum Injection Moulding Technique

    University essay from Högskolan i Borås/Institutionen Ingenjörshögskolan

    Author : Rima Ghoreishi; Mehdi Ehsani Fatmehsari; [2010]
    Keywords : soybean oil resin; jute fiber; AESO; MMSO; hybrid composite; flexural test; tensile test; DMTA; vacuum injection molding;

    Abstract : The aim of this research was to analyze the mechanical and thermal properties of composites andhybrid composites prepared with four types of jute fibers and two different resins; biobased thermosetresins acrylated epoxidized soybean oil (AESO) and mathacrylated anhydride modified soybean oil(MMSO). The processing technique used was vacuum injection molding (VIM). READ MORE

  6. 5. Film formation of latex in dry coating films

    University essay from Fakulteten för teknik- och naturvetenskap

    Author : Kristian Nilsson; [2007]
    Keywords : Coating; Latex; DMTA; Film formation; Tg;

    Abstract : The objective of this master thesis was to investigate the possibility to measure the gain in stiffness of the dry coating due to film formation of latex with a Dynamic Mechanic Thermal Analyzer (DMTA). This could tell when and to which extent the latex forms a film after the drying process. READ MORE