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Influence of cutting process and free cut edge geometry on the Al-5083 fatigue strength
  • Bachelor and Master Thesis
    • Battery research: Selective laser sintering for use in future batteries
    • Evaluation of the influence of particle contamination depending on the separator and compression using the Hi-Pot Test
    • Contacting of metal-polymer current collectors for use in cylindrical cells: Concept development and validation
    • Optimization of a bending test for the mechanical characterization of battery electrodes
    • Influence of cutting process and free cut edge geometry on the Al-5083 fatigue strength
    • Design and testing of a device and method for the in-situ calibration of force sensors in the die casting process
    • Laser beam assembly of lithium metal anodes
    • Laser pretreatment of die-cast aluminium for in-mold assembly with plastic
    • Prediction of component properties in high-pressure die casting using machine learning
    • Remelting effect on temperature field, residual stress, and distortion in WAAM components
    • Residual stress variations during fabrication
    • Conversion and test of a heating system
    • Investigation of the local suitability for adhesive bonding of aluminium die-cast components
    • Investigation of the local suitability for welding of aluminium die-cast components
    • Influence of thermal cutting processes on the quality of the cut edges
    • Toughness of high strength welded steels

Influence of cutting process and free cut edge geometry on the Al-5083 fatigue strength

Background

The Aluminum alloy Al-5083 belongs to the non-heat treatable group presenting a high Magnesium content and a good strength. Magnesium is then the main alloying element from Al-5083 which has a good corrosion resistance and weldability. Hence this alloy is commonly used in shipbuilding and automotive applications.

Thermal cutting processes are often used during processing. The cut method and geometry of the free cut edges have a relevant effect on the material fatigue strength, which has been already proven for steel. The influence of cut methods and edge geometry on the fatigue strength are not yet widely conducted for the Al-5083 material.

Task

The aim of the study is to investigate the influence of cutting methods and edge geometry on the fatigue strength. The effects of the cutting process on the material structure and the quality of the cut edges are to be determined on samples cut by laser beam, plasma and water jets. Furthermore, the fatigue behavior is classified and a comparative correlation is made with the determined quality characteristics.

 

In the context of the student work the following task fields arise:

  • Literature research on the topic fatigue behavior from cut edges
  • Performing fatigue investigations
  • Metallographic investigations on the base material and heat affected zone
  • Fractographic analysis
  • Results analyses, discussion, and written elaboration.

Amount of work

The scope of the work is scalable and therefore allows for a bachelor’s thesis and student research project. A detailed assignment can be requested from the supervising research assistant. The time for familiarization is given under supervision.

Requirements

  • Known requirements of the faculty for the submission of a student research project or thesis.
  • Commitment and fun in experimental and constructive work.
  • Knowledge of materials science is an advantage
  • Fluent English.

Start

The work can start immediately.

 

 

Juliana Diniz e Castro
Langer Kamp 8, 38106 Braunschweig
05 31 / 39 195 532
j.diniz-e-castro(at)tu-bs.de
Juliana Diniz e Castro
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