Essays about: "Hammer test"

Showing result 16 - 20 of 24 essays containing the words Hammer test.

  1. 16. Tribological testing of top hammer drill buttons

    University essay from Uppsala universitet/Tillämpad materialvetenskap

    Author : Carl Johan Hassila Karlsson; [2016]
    Keywords : tribology; wear; cemented carbides; WC-Co; sandstone; granite; rock drilling; top hammer drilling; wear test; friction;

    Abstract : In the present work further modifications are implemented to an existing test setup for the evaluation of the wear of cemented carbide drill buttons in rock drilling applications. The test setup has been evaluated in previous diploma works, which has shown that the test successfully mimics the wear seen in rock drilling applications. READ MORE

  3. 17. Numerical analysis of vibrations due to impact pile driving

    University essay from Lunds universitet/Geoteknik; Lunds universitet/Institutionen för byggvetenskaper

    Author : Sebastian Andersson Olivecrona; Rasmus Sulander; [2016]
    Keywords : Finite element method; Concrete pile; Impact pile driving; Ground vibrations; Soil mechanics; Soil dynamics; COMSOL Multiphysics; Technology and Engineering;

    Abstract : Vibrations originating from constructional work can affect the nearby soil and structures. Depending on the properties of the vibrations, these can result in settlements in the soil and damages to existing structures. Along with blasting, impact pile driving is one of the greatest sources of vibrations on a construction site. READ MORE

  4. 18. Heat Resistant Steel Alloys : Atlas Copco

    University essay from Uppsala universitet/Institutionen för teknikvetenskaper

    Author : Malin From; Johanna Ejerhed; Artin Fattah; Markus Lindén; Alex Karlstens; [2015]
    Keywords : steel alloy heat resistant nitration;

    Abstract : Atlas Copco is interested in investigating the friction in the top-hammer drilling tool threads thatcauses the steel to heat up, leading to a phase transformation and a softer steel in the threads. Theaim of this project is to find a steel alloy or surface finishing that will retain its hardness atelevated temperatures better than the presently used threads material. READ MORE

  5. 19. Vibrational measurement techniques applied on FE-model updating

    University essay from Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Author : Yaolun Wang; [2015]
    Keywords : vibrational test; modal analysis; FE-model; Abaqus;

    Abstract : In this thesis, the dynamics of two plates overlapping and connected by three bolts are studied. The data collected in the test are used in modal analysis. The vibrational test and the modal analysis were made using an LMS system. Hammer excitation is used for the tests. READ MORE

  6. 20. Frequency Analysis of Rottne Comfort Line

    University essay from Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Author : Jan Grzeszczak; Michał Płygawko; [2014]
    Keywords : Centre of gravity; Hammer test; Inertia Properties; LMS; Mass line; OMA; Vibration testing;

    Abstract : The European Parliment stipulated regulations concerning the forestry vehicles operators' health and working conditions. The allowed whole body vibrations were limited, which influenced the design of the vehicles' cabin. Surveys show a strong correlation between operator's comport and their productivity. READ MORE