Essays about: "friction"

Showing result 1 - 5 of 433 essays containing the word friction.

  1. 1. Tribological Performance of Polymer Based Self-lubricating Coatings

    University essay from Luleå tekniska universitet/Maskinelement

    Author : Amit Roy; [2019]
    Keywords : polyimide coatings; carbon nanotube; graphene; tribological properties; elevated temperature.;

    Abstract : The thesis comprises the two parts in each chapter: the first part focuses on the development and characterization of polyimide (PI) based composite coatings on a steel substrate. In order to improve the tribological performance of polyimide coatings, the fillers i.e. READ MORE

  2. 2. Mechanical dry grinding process of saw chain

    University essay from Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap; Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Author : Dennis Svensson; Tobias Falk Svärd; [2019]
    Keywords : dry grinding; abrasive; grinding wheel; grinding disc; grinding wheel; friction; energy; work; chainsaw; saw chain; cutting link; cutting edge;

    Abstract : The cutting links on chainsaws needs to be sharpened regularly to retain its sharpness. The most effective way is to use a machine wheel grinder. However, due to high friction there is a high risk of tempering the steel and damaging the sustainability to wear, resulting in a dull cutting edge. READ MORE

  3. 3. Uses and Issues – The case of Visby Cathedral : An analysis of values and frictions associated with usage at a venue that is both cultural heritage and an active religious institution

    University essay from Uppsala universitet/Institutionen för teknikvetenskaper

    Author : Walter Duphorn; [2019]
    Keywords : ;

    Abstract : This thesis is a case study of Visby Cathedral, cultural heritage with a rich history that has been an active site of worship since medieval times. This has resulted in an interest in the cathedral as a tourist destination which has increased exponentially since the city became a world heritage. READ MORE

  4. 4. Simulation and Analysis of Ultrasonic Wave Propagation in Pre-stressed Screws

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Erik Andrén; [2019]
    Keywords : ;

    Abstract : The use of ultrasound to measure preload in screws and bolts has been studied quite frequently the last decades. The technique is based on establishing a relationship between preload and change in time of flight (TOF) for an ultrasonic pulse propagating back and forth through a screw. READ MORE

  5. 5. Spiral Groove Bearing Multiphysics Modeling

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

    Author : Mohamed Yousri Abdelmeguid Mohamed; [2019]
    Keywords : ;

    Abstract : Cone crushers are widely used in the mining, mineral processing and quarrying segments of the industry to crush ores and large rocks. In such machinery, the load to be carried is rather heavy and the motion is gyratory which creates a need for a bearing set that can withstand such severe conditions. READ MORE