Sökning: "drilling test"

Visar resultat 1 - 5 av 71 uppsatser innehållade orden drilling test.

  1. 1. Method to statistically secure field test results for rock drilling tools

    Kandidat-uppsats, Uppsala universitet/Institutionen för materialvetenskap

    Författare :Frida Olander; [2023]
    Nyckelord :Statistics; Probability; Hypothesis test; Linear regression;

    Sammanfattning : The aim of this project is to find a statistical method that describes survival and outcome of a prototype drilling tool from several references and determine how many references are needed for a statistically secure result. The project also answers which variables that affects the outcome. LÄS MER

  3. 2. Analyzing a New Method for Estimating Strength Classes in Existing RC Structures

    Master-uppsats, KTH/Transportplanering

    Författare :Gabriel Matli; Veronica Soulaka; [2023]
    Nyckelord :;

    Sammanfattning : This master thesis focuses on validating the Graphical Concrete Strength Class (GCSC) method on a large scale. The GCSC method is an empirical approach for assessing the concrete strength class of existing reinforced concrete structures. LÄS MER

  4. 3. Hydrogeological and economic analysis of a groundwater-based water supply system in rural Nepal

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Väg- och vattenbyggnad (CI); Lunds universitet/Teknisk geologi

    Författare :Hamon Hedayatnasab; [2023]
    Nyckelord :Technology and Engineering;

    Sammanfattning : Access to safe drinking water and sanitation is a given standard and considered as basic human rights in urban areas and industrialized countries. However, 40 % of the world's population living in rural areas in developing countries lack access to safe drinking water. LÄS MER

  5. 4. Paleomagnetic and Thermomagnetic Studies on Rock Samples from COSC - 1 Drilling Project

    Master-uppsats, Uppsala universitet/Geofysik

    Författare :Wanyi Li; [2022]
    Nyckelord :Scandinavian Caledonides; remanent magnetization; AF demagnetization; temperature dependent magnetic susceptibility; Skandinaviska Kaledoniderna; remanent magnetism; växelfältsavmagnetisering; temperaturberoende av magnetisk susceptibilitet;

    Sammanfattning : The COSC-1 borehole located in the Lower Seve nappe of the Central Scandinavian Caledonides is intended to study the tectonic evolution of the Paleozoic orogen. The drilling project reached a depth of 2495.8m and obtained samples from different lithologal units of mica schist, amphibolite, gneiss, and mylonitic gneisses. LÄS MER

  7. 5. Innerytans inverkan på utmattningshållfasthet i bergborrstänger

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Erik Hållström; [2022]
    Nyckelord :Top hammer drill; Surface roughness; Flush hole; Material fatigue; Topphammarborr; Materialutmattning; Spolhål; Ytjämnhet;

    Sammanfattning : Top hammer drilling uses a percussive force at the top combined with a rotational energy that transmits through a rod to a drill bit that crushes rock. It is a drilling method that is preliminary used in mining, construction and operations under ground. Fatigue strength plays an important role in the drill rods life span. LÄS MER