Essays about: "High-cycle fatigue"

Showing result 1 - 5 of 16 essays containing the words High-cycle fatigue.

1. 1. Life and fracture in very high cycle fatigue of a high strength steel

   University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

   Author : Daniel Karlsson; [2021]
   Keywords : Very high cycle fatigue; VHCF; Fractography; Fine granular area; FGA; High strength tool steel; Ultrasonic testing equipment;

   Abstract : Classical fatigue models teach that there is an intrinsic fatigue limit for steels, representing a level of stress that is too low for regular crack growth where every cyclic load propagates a fatigue crack through the material. Modern application with extreme lifetimes has shown that fatigue will still take place in steels with stress levels well below the expected fatigue limit. READ MORE

3. 2. Transient Stress and Strain Assessment of Marine Boiler : Fully Rigid Body Dynamics Coupled Finite Element Analyses

   University essay from Linnéuniversitetet/Institutionen för maskinteknik (MT)

   Author : Sohail Anwar; [2020]
   Keywords : Seakeeping; FEA; Strain; Stress; RAO; Rigid; Body; Dynamics; Finite; Element;

   Abstract : Operationally, marine components and structures such as boiler in a Ship, are exposed to varying mechanically and thermally induced forces. High-frequency mechanical loading arises from the cyclic pressure, temperature transients, and six directional Rapid Amplitude Operator (RAOs). READ MORE

4. 3. Influence of matrix and alloying on the high cycle fatigue properties of compacted graphite iron for cylinder heads

   University essay from KTH/Hållfasthetslära

   Author : Erik From; [2020]
   Keywords : ;

   Abstract : Continued improvements in combustion processes, introduction of biofuels, decreasing fuel consumption and increasing specific power will inevitably lead to an increase of the combustion pressure, which can be accompanied with a temperature increase. This will increase the loading on many components and drives the development of materials more resistant to the harsh conditions close to the engine. READ MORE

5. 4. Continuous Time Fatigue Modelling for Non-proportional Loading

   University essay from Linköpings universitet/Mekanik och hållfasthetslära

   Author : Sajjan Gundmi Satish; [2019]
   Keywords : Multiaxial Fatigue Loading; Fatigue Analysis; Continuous Time fatigue model; Endurance Surface; Rainflow Counting; Cyclic loading; Cycle Counting; Damage Evolution; High-cycle fatigue; Non-proportional loading;

   Abstract : Fatigue analysis is a critical stage in the design of any structural component. Typically fatigue is analysed during post-processing, but as the size of the analysed component increases, the amount of data stored for the analysis increases simultaneously. READ MORE

6. 5. High cycle fatigue properties of extruded 6060-T6, 6063-T6 and 6082-T6 : Influence of die lines and microstructure on fatigue in flat extruded aluminum profiles

   University essay from KTH/Materialvetenskap

   Author : Sundström Robert; [2018]
   Keywords : fatigue; die lines; microstructure; extruded; extrusion; aluminum; aluminium; Al; AlMgSi; Al-Mg-Si; Mg-Si; Si-Mg; flat profile; 6xxx; 6000; utmattning; mikrostruktur; aluminium; aluminum; Al; AlMgSi; Al-Mg-Si; Mg-Si; Si-Mg; extrusion; extruderat; platt profil; 6xxx; 6000;

   Abstract : Aluminum alloys are of great importance in the automotive and truck industries due to the weight savings that they can help to achieve. However, the use of such alloys in applications where they are subjected to alternating stresses requires knowledge about their fatigue behavior. READ MORE