Essays about: "fatigue life estimation"

Showing result 1 - 5 of 13 essays containing the words fatigue life estimation.

1. 1. Weight Optimization of Vertical-Axis Wind Turbine Blades constructed in Swedish Fossil Free Steel : With respect to fatigue life time

   University essay from Linnéuniversitetet/Institutionen för maskinteknik (MT)

   Author : Johannes Hall; Albin Larsson; [2023]
   Keywords : VAWT; Wind Turbine Blade; SSAB; Fossil-Free; Weight Optimization; Topology Optimization; Sizing Optimization; NACA 0018; STRENX 1300; Abaqus; Tosca Structure; VAWT; Vindturbinblad; SSAB; Fossilfritt; Viktoptimering; Topologioptimering; Size-Optimering; NACA 0018; STRENX 1300; Abaqus; Tosca Structure;

   Abstract : Wind turbines have been utilized for centuries to harness energy from the wind. Commercial wind turbine blades are typically made from composite materials, which are difficult to recycle, leading to blades ending up in landfills at the end of their lifecycle. Additionally, these materials contribute to microplastic pollution. READ MORE

3. 2. Comparison of Fatigue Life Evaluation Methods

   University essay from KTH/Hållfasthetslära

   Author : Louise Hedberg Lundblad; Anna Lund; [2021]
   Keywords : Solid Mechanics; Fatigue; Time history methods; Spectral methods; Truck components; Road induced vibrations; Hållfasthetslära; Utmattning; Tidshistoriksmetoder; Spektrala metoder; Lastbilskomponenter; väginducerade vibrationer;

   Abstract : The aim of this thesis is to investigate a selected set of fatigue life calculation methods and evaluate if they are suitable for fatigue life estimation of truck components at Scania. Failure due to fatigue can be cause by road induced vibrations, which is an inevitable phenomenon trucks are exposed to. READ MORE

4. 3. Modelling, Evaluation and Assessment of Welded Joints Subjected to Fatigue

   University essay from Linköpings universitet/Mekanik och hållfasthetslära

   Author : Prajeet Rajaganesan; [2020]
   Keywords : Welded joints; Fatigue Assessments; Hot Spot method; Python Automation; Post-processing; Abaqus;

   Abstract : Fatigue assessment of welded joints using finite element methods is becoming very common. Research about new methods is being carried out every day that show a more accurate estimation of the fatigue life cycle than the previous ones. READ MORE

5. 4. Development of a method for estimation of contact fatigue life in hypoid gears

   University essay from KTH/Maskinkonstruktion (Inst.)

   Author : Srigiripura Sahana Vittal; [2020]
   Keywords : Hypoid Gear; Rolling Contact fatigue; Fatigue life; FEM; Gear Contact life; Spalling; physical testing; fatigue analysis; Hypoidväxel; rullande kontaktutmattning; utmattningslivslängd; FEM; växelkontaktlivslängd; spalling; fysisk testning; utmattningsanalys;

   Abstract : Hypoid gears have been used extensively in automobiles, aerospace, marine and other applications for decades. The special advantages of hypoid gears come with inherent contact complexities of varying curvature and sliding in both profile and lengthwise direction. READ MORE

6. 5. Transient and Spectral Fatigue Analysis for Random Base Excitation

   University essay from

   Author : Albin Bäckstrand; Prithviraj Madhava Acharya; [2019-09-16T10:43:03Z 2019-09-16T10:43:03Z 2019 2019]
   Keywords : Spectral fatigue analysis; transient fatigue analysis; power spectral density PSD ; transfer function; base excitation; Dirlik s empirical formula; equivalent von Mises stress EVMS ; rainflow count; Wang and Brown s method; Dang Van equivalent stress; Palmgren-Miner rule;

   Abstract : This thesis work gives an insight on how to estimate the fatigue damage using transient and spectral fatigue analysis for both uniaxial and multiaxial stress states in case of random vibration base excitation. The transient method involves a rainflow count algorithm that counts the number of cycles causing the fatigue damage, while the spectral method is based on probabilistic assumptions from which an expected value of fatigue damage can be estimated. READ MORE