Essays about: "mechanical and thermal stress"

Showing result 1 - 5 of 45 essays containing the words mechanical and thermal stress.

  1. 1. Experimental and computational analysis of the thermal degradation and the loss of strength of engineered wood-based panels

    University essay from Lunds universitet/Avdelningen för Brandteknik

    Author : Wickramasooriyage Devmini Kularatne; [2022]
    Keywords : Oriented strand board; thermal decomposition; mechanical degradation; heat transfer modelling; Technology and Engineering;

    Abstract : The current trends in the construction industry push toward materials that are more sustainable and environmentally friendlier than more traditional building materials such as concrete and steel. Timber and timber composites are one of the most popular materials on this list, due to both their mechanical strength and pleasant aesthetics. READ MORE

  3. 2. Improving Availability of the Pelletization Process

    University essay from Luleå tekniska universitet/Institutionen för ekonomi, teknik, konst och samhälle

    Author : Emil Andreasson; Pontus Åhman; [2022]
    Keywords : Availability; Predictive Maintenance; Pelletization; Statistical Process Control; Refractory Material; DMAIC;

    Abstract : The Grate-Kiln-Cooler process is a commonly used method of sintering during iron ore pelletization, where the pellets are formed, dried, and hardened. The pellets are oxidized in the rotating Kiln, turning magnetite (Fe3O4) to hematite (Fe2O3), making the pellets attain suitable metallurgical attributes for further processing. READ MORE

  4. 3. Automatic Crack Detection in Sand Molds Using Image Processing and Convolutional Neural Networks

    University essay from Uppsala universitet/Signaler och system

    Author : Tim Andersson; [2022]
    Keywords : automatic crack detection; convolutional neural network; image processing; sand casting;

    Abstract : Sand casting is used to manufacture large metal workpieces. The processing is executed by pouring molten metal into a sand mold. During the process, the mold is subjected to mechanical and thermal stress. It is of economic interest to inspect the molds for defects that can affect casting results, in the worst case leading to discarded products. READ MORE

  5. 4. Energy and Strength-based Criteria for Intralaminar Crack Growth in Regions with High Stress Gradients

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

    Author : Anish Niranjan Kulkarni; [2021]
    Keywords : Cross-ply composites; High crack density; Stress gradient; FEM; Stress analysis; Strain Energy Release Rate;

    Abstract : Cross-ply composite laminates can develop very high density of transverse cracks in the 90-layer under severe thermal and mechanical loading conditions. At such high crack densities, two adjacent cracks start to interact, and a stress gradient is created in the region between these cracks. READ MORE

  6. 5. Structural modifications of polyester fibres induced by thermal and chemical treatments to obtain high-performance fibres

    University essay from KTH/Fiber- och polymerteknologi

    Author : Kartikeya Sharma; [2021]
    Keywords : PET fibres; P3HB fibres; Radial gradient; Chemical modification; Thermal annealing; High-performance fibres; PET-fibrer; P3HB-fibrer; Radiell lutning; Kemisk modifiering; termisk glödgning; högpresterande fibrer;

    Abstract : Del A: Polyetylentereftalat fibrer I detta arbete presenteras olika metoder för att framställa monofilament av polyetylentereftalat (PET) (diameter: 30-50 µm) med en radiell gradient. Nyutvecklad Raman-spektroskopiteknik har använts för att kartlägga dessa inducerade radiella gradienter i t.ex. kristallinitet. READ MORE