Results 91 to 100 of about 70,244 (209)

Investigation of Cracks Found in Helicopter Longerons [PDF]

open access: yes, 2009
Four cracked longerons, containing a total of eight cracks, were provided for study. Cracked regions were cut from the longerons. Load was applied to open the cracks, enabling crack surface examination.
Baughman, James M.   +2 more
core   +1 more source

On the interaction of ultrasound with cracks: Applications to fatigue crack growth [PDF]

open access: yes
Partial contact of two rough fatigue crack surfaces leads to transmission and diffraction of an acoustic signal at those contacts. Recent experimental and theoretical efforts to understand and quantify such contact in greater detail are discussed.
Buck, O.   +2 more
core   +1 more source

Study of the Intrinsic Factors Determining the Near-Threshold Fatigue Crack Propagation Behavior of a High-Strength Titanium Alloy

open access: yesMetals
The resistance to near-threshold fatigue crack growth and its correlation with the microstructure of the Ti-5Al-3Mo-3V-2Zr-2Cr-1Nb-1Fe alloy were investigated.
Huan Wang   +6 more
doaj   +1 more source

A total life prediction model for stress concentration sites [PDF]

open access: yes
Fatigue crack growth tests were performed on center crack panels and radial crack hole samples. The data were reduced and correlated with the elastic parameter K taking into account finite width and corner crack corrections.
Dawicke, D. S., Hartman, G. A.
core   +1 more source

Interlaminar crack growth in fiber reinforced composites during fatigue, part 3 [PDF]

open access: yes
Interlaminar crack growth behavior in fiber-reinforced composites subjected to fatigue loading was investigated experimentally and theoretically. In the experimental phase, inter-laminar crack propagation rates and mechanisms were determined for the ...
Wang, H. T., Wang, S. S.
core   +1 more source

ANALYSIS OF CRACK PROPAGATION DURING FATIGUE TESTS IN INJECTION MOULDED NOTCHED SPECIMENS MADE OF SHORT GLASS FIBRE REINFORCED POLYAMIDE [PDF]

open access: yes, 2016
In this work, we present the results of fatigue tests on injection moulded, notched specimens made of short glass fibre reinforced polyamide 66, containing 50%w of fibres. Specimens have three different notch radii (2 mm, 1 mm and 0.5 mm).
BERNASCONI, ANDREA   +2 more
core  

Short crack initiation and growth at 600 °C in notched specimens of Inconel718

open access: yes, 2003
The natural initiation and growth of short cracks in Inconel®718 U-notch specimens has been studied at 600 °C in air. U notches were introduced through broaching, and hardness traces and optical microscopy on cross-sections through the U notch broaching ...
Connolley, T.   +2 more
core   +1 more source

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