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FME CTU in Prague

Introduction

This experimental campaign was performed in our department at the CTU in Prague on samples from Aircraft Industries company. These were originally manufactured by Acorn Welding to serve for component tests of welded joints for the project of a new engine bed for L 410 NG airplane. The project was abandoned, however. We proposed to test the samples in our lab under the condition that the test output will be free for any publication. The results should primarily serve as an experimental basis for diploma and PhD theses in our department, but thanks to their open-access character their wide sharing in other projects is enabled.

Jan Papuga

Conditions of Use

In case you decide to use these data items for any your publication, you agree to refer to the original paper, where they are first used:

Machač, M.; Papuga, J.; Doubrava, K.; Fišer, J.: Fatigue Analysis of Thin-Walled Welded Hollow Section Joints. In: Fatigue and Fracture of Materials and Structures. Structural Integrity, Vol. 24, Cham, Springer 2022, pp. 49-55.

 


Weldments

Setup of the Experimental Campaign

  • Tests performed at: Dept. of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, Czech Technical University in Prague
  • Test operators: Ivona Vízková (H-specimens), Martin Machač and Karel Doubrava (I-specimens)
  • Testing machine: Amsler HFP422
  • Load ratio: R=0.1
  • Test frequencies: I-specimen 130 Hz, H-specimen 75-90 Hz
  • Failure definition: Frequency decrease by 5 Hz

Experimental Results

H-specimen, R=0.1, f=75-90 Hz
SampleStress amplitude [MPa]Mean stress [MPa]Number of cycles [-] Defectoscopy
H1383.4101.9257991D: Incomplete penetrations 7.5 + 1.5 mm
2C: Pore 1.0 x 0.3 mm
H0783.6102.2296131D: Pore 1.0 mm
H0178.595.937890Between 2D and 2B: Row of pores 1.2 x 1.5 mm
close to 2A: Pore 2 x 0.4 mm
H1167.983.0415221D: Pore 2.1 mm
close to 1B: row of pores 2.5 x 0.2 mm
1A: Tungsten 0.7 x 0.5 mm
H0973.389.6697521D: Pore 1.0 mm
1C: Pore 0.4 mm
2C: Pore 2.6 mm
H0662.876.71038272C: Pore 0.8 mm
H1457.670.41669131C: Incomplete penetrations 1.5 + 1.5 mm
2C: Pore 1.3 x 0.6 mm
H0441.951.21692791D: Incomplete penetration 8 mm
close to 2C: Pore 1.2 mm
H1041.951.2491391
H0852.464.04970851D: Pore 0.5 mm
1C: Incomplete penetration 5mm
2D: Incomplete penetration 2.5 mm
H0536.744.810279051D: Incomplete penetration 4 mm
2C: Pore 0.8 mm
H0247.257.71124261
H0336.744.811231398close to 1C: Pore 1.1 mm
close to 2C: Pore 1.0 mm
H1231.438.416734416
I-specimen, R=0.1, f=130 Hz
SampleStress amplitude [MPa]Mean stress [MPa]Number of cycles [-]Defectoscopy
T04284.0347.05817
T11260.7318.67403
T08240.1293.411105
T06195.9239.420779Pore 0.7 mm
T07218.5267.022961
T05173.3211.831770Pore 2.2 x 0.5 mm
T10173.5212.0129927
T02120.7147.5198555Tungsten particle 0.7mm
T12150.9184.4270663
T09135.8165.9431158
T03120.7147.5836446
T01113.2138.31264937

papuga@pragtic.com

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