Essays about: "crack development"

Showing result 1 - 5 of 51 essays containing the words crack development.

  1. 1. Development of thick GaN and AlGaN drift layers for vertical power devices

    University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Author : Andri Dhora; [2023]
    Keywords : Technology and Engineering;

    Abstract : High-quality, thick III-nitride epitaxial drift layers with controlled doping are needed for next-generation highly efficient vertical power devices for a smart grid applications and electrification of mobility. Achieving desirable material properties, such as low background impurity concentrations and reduced dislocation densities in combination with high growth rates, necessary for practical application present a challenge. READ MORE

  3. 2. The Influence of Pigment Additives on the Barrier Properties of Dispersion Coatings

    University essay from KTH/Fiber- och polymerteknologi

    Author : Malin Eriksson; [2022]
    Keywords : dispersion coating; paper products; pigment; sustainable development; circular economy; Dispersionsbarriär; pappersprodukter; pigment; hållbar utveckling; cirkulär ekonomi;

    Abstract : Att minska plastavfall och uppmuntra återvinning har fått hög prioritet i många affärsverksamheter och olika typer av regleringar implementeras för att minska den negativa påverkan av plastanvändningen. Papper och kartong består i huvudsak av cellulosa som har många egenskaper som är essentiella för en hållbar ekonomi (t.ex. READ MORE

  4. 3. Use of Digital Image Correlation for monitoring of concrete buttress dam failure model tests

    University essay from KTH/Betongbyggnad

    Author : Jarl Jensen; Markus Leijström; [2022]
    Keywords : ;

    Abstract : The monitoring of dam structures is of great importance for the safety of the dam.A dam failure can cause disastrous consequences for people and infrastructure downstream.Dams are monitored by periodic inspections and monitoring systems. READ MORE

  5. 4. Development of a System to Quantify Coking in Rocket Nozzle Cooling Channels

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Adam Parks; [2022]
    Keywords : methane; pyrolysis; reusable; carbon deposition; ozone cleaning; rocket engines; cooling channels; borescope; metan; pyrolys; återanvändbar; koldeposition; ozon-rening; raketmotorer; kylkanaler; boreskop;

    Abstract : Liquid methane is becoming an increasingly attractive rocket propellant due to its high performance characteristics and potential to support in-situ resource utilisation. Methane, however, when heated, can thermally decompose in a process known as pyrolysis. READ MORE

  6. 5. Shear Failure of Steel Fiber and Bar Reinforced Concrete Beams Without Stirrups : Predictions based on Nonlinear Finite Element Analyses

    University essay from KTH/Betongbyggnad

    Author : David Andersson; [2022]
    Keywords : Nonlinear finite element analysis; Shear failure; Fiber reinforced concrete beams; ATENA;

    Abstract : Shear failure in concrete beams are often brittle in nature and potentially dangerous without adequatereinforcing measures. In design of concrete, it is commonly recommended to install transversalreinforcement along the shear span to induce a more ductile structural response, improving the shearcapacity all together and providing sufficient warning prior to collapse. READ MORE