Project

Measurement of erosion resistance of turbine blade coatings using a provoked water jet method

Publisher

Supervisor

Location

Greater Copenhagen area

Background:

Early studies on raindrop erosion of the material and coating of aviation objects were launched with the invention of rocket-powered aircrafts and missiles around the WWII. Raindrop impacts impose a high magnitude force on the target that can damage the surface or dislodge the bulk material. Set-ups to simulate the raindrop impact on such vehicles are therefore focused on very high-speed liquid-solid impacts.

Another field where raindrop impact has received a lot of attention in recent years is the wind turbine industry. To make energy production more efficient the wind turbines and their rotor diameter are getting bigger. Presently the largest rotor diameter is 170 m with 8 MW capacity. Rotor diameters of 250 m with 20 MW capacity are anticipated. Maximum tip speed of the present wind turbine blades is 100 m/s, which might be higher for larger wind turbines.

Composite wind turbine blades are designed to last for about 20-25 years in the field. However, the composite materials are susceptible to heat, moisture, UV radiation, and especially erosion from both solid particles and rain. If repairs are not done at the early stages, damage to the underlying laminate will be present as early as after five years. The break down mechanisms are not fully understood, however apart from the protecting materials ability to withstand a single impact also the relation between the raindrop impact period and the relaxation time is important.

The industrial standard to investigate simulated impact from raindrops is the so-called whirling arm erosion test rig or rain erosion test (RET). In this set-up, the raindrops are colliding with the painted sample mounted on a rotating arm. One attempt to make this test method simpler is the principle based on a provoked water jet driven by a high-pressure pump.

 

Purpose of the project:

The purpose of this project is to develop and evaluate a new test method for assessment of the coatings against water impact erosion. Experiments are performed with this set-up to quantify the lifetime of the coating and to correlate it with the established RET method.

 

 

Tasks:

·         Literature study on coating water impact erosion and test methods

·         Investigate and report the standard protocols for performing the rain erosion tests

·         Correlation of the coatings erosion resistance results from the new set-up with RET results

·         Experimental determination of the coating life time

Download Materials

Search in postings
Contact

Company / Organization

DTU Kemiteknik

Name

Søren Kiil

Position

Lektor

Mail

SK@kt.dtu.dk

Supervisor info

MSc in Chemical and Biochemical Engineering

Supervisor

Søren Kiil

Co-supervisors

Claus Erik Weinell, Kim Dam-Johansen, Seyednezamaddin Azizaddini

ECTS credits

30

Type

MSc thesis

MSc in Engineering, Mechanical Engineering

Supervisor

Søren Kiil

Co-supervisors

Claus Erik Weinell, Kim Dam-Johansen, Seyednezamaddin Azizaddini

ECTS credits

30

Type

MSc thesis

MSc in Materials and Manufacturing Engineering

Supervisor

Søren Kiil

Co-supervisors

Claus Erik Weinell, Kim Dam-Johansen, Seyednezamaddin Azizaddini

ECTS credits

30

Type

MSc thesis

MSc in Wind Energy

Supervisor

Søren Kiil

Co-supervisors

Claus Erik Weinell, Kim Dam-Johansen, Seyednezamaddin Azizaddini

ECTS credits

30

Type

MSc thesis

Technical University of Denmark

For almost two centuries DTU, Technical University of Denmark, has been dedicated to fulfilling the vision of H.C. Ørsted – the father of electromagnetism – who founded the university in 1829 to develop and create value using the natural sciences and the technical sciences to benefit society.


Today, DTU is ranked as one of the foremost technical universities in Europe, continues to set new records in the number of publications, and persistently increases and develops our partnerships with industry, and assignments accomplished by DTU’s public sector consultancy.

Find us here

Anker Engelunds Vej 1
Bygning 101A
2800 Kgs. Lyngby

Denmark



Tlf. (+45) 45 25 25 25

CVR-nr. 30 06 09 46

All vacant positions
 

loading..