Searched for: +
(1 - 8 of 8)
document
Schijve, J. (author), Jacobs, F.A. (author)
Fatigue tests were carried out on Redux and FM 123/5 bonded specimens at various stress levels, temperatures (RT to 65 C) and low and high test frequencies. Observations were made on the type of failure (bond line failure or sheet failure) and the significance of the adhesive squeezeout for crack nucleation. An analysis of the data and a...
report 1984
document
Schijve, J. (author), Jacobs, F.A. (author)
Several simple crack stopping methods were evaluated In fatigue crack propagation tests on 2024-T3 Alclad sheet specimens. After precracklng until a crack of 40 mm was obtained crack stoppers were Installed and the fatigue test was continued. Crack stoppers Installed In stop holes were: a blind rivet, a hard driven rivet, a heavily tightened...
report 1984
document
Schijve, J. (author)
Paper presented at the 16th ICAP Conference, Brussels, 14 and 15 May 1979.
report 1979
document
Schijve, J. (author), Jacons, F.A. (author), Meulman, A.E. (author)
Flight simulation tests on 2024-T3 and 7075-T6 lug specimens indicated significant fatigue life improvements obtained by expanding the holes in accordance with the split-sleeve cold work method. Geometrical distortions induced by the expansion were measured. The significance of residual stresses is analysed with reference to depth of penetration...
report 1978
document
de Rijk, P. (author), Schijve, J. (author)
A second series of exploratory acoustic fatigue tests using a shaker. A second series of exploratory acoustic fatigue tests was carried out, again employing simple specimens mounted on a shaker. Strain measurements were compared with calculations. Crack growth initiated by a central notch was observed. A comparison was made between three types...
report 1977
document
Jacobs, F.A. (author), Schijve, J. (author), Tromp, P.J. (author)
Fatigue tests under flight-simulation loading have been performed on unnotched Alclad 2024-T3, anodised 2.0 mm thick sheet specimens, manufactured according to several machine-shop processes applied in the air craft industry. From the results it appears that milling is preferable to stamping. Rounding off the edges is also advantageous. The...
report 1977
document
Schijve, J. (author), Jacobs, F.A. (author), Tromp, P.J. (author)
Tests were carried out on open-hole specimens, lugs and riveted strap joints of 2024-T3 and 7075-T6 materials. The effects of design stress level, truncating high-amplitude gust loads and omitting low-amplitude gust cycles were stuaied. Observations of the open-hole specimens include data on crack initiation, crack closure and damage increments....
report 1974
document
Schijve, J. (author)
report 1972
Searched for: +
(1 - 8 of 8)