Measurement of assembly stress in composite structures using the deep-hole drilling technique

Garza, C, Das, R, Shterenlikht, A and Pavier, M 2018, 'Measurement of assembly stress in composite structures using the deep-hole drilling technique', Composite Structures, vol. 202, pp. 119-126.


Document type: Journal Article
Collection: Journal Articles

Title Measurement of assembly stress in composite structures using the deep-hole drilling technique
Author(s) Garza, C
Das, R
Shterenlikht, A
Pavier, M
Year 2018
Journal name Composite Structures
Volume number 202
Start page 119
End page 126
Total pages 8
Publisher Elsevier
Abstract The deep-hole drilling (DHD) method is a residual stress measurement method that is widely used for measurements in thick metallic components. In the DHD method a reference hole is first drilled through the thickness of the component. The diameter of the hole is measured accurately and then a cylindrical core of material around the hole is trepanned from the component, relaxing the residual stresses in the core. Finally, the diameter of the reference hole is re-measured and the change in diameter used to calculate the residual stress. In this work the method is used to attempt the measurement of cure and assembly stress in thick AS4/8552 composite laminates. The results indicate that although the DHD method cannot measure cure stress, it is able to measure assembly stress. Futhermore, a modification to the standard DHD method allows the through-thickness component of assembly stress to be measured in angle components.
Subject Composite and Hybrid Materials
Solid Mechanics
Keyword(s) Assembly stress
Composite structures
Deep hole drilling
Residual stress
DOI - identifier 10.1016/j.compstruct.2017.12.031
Copyright notice © 2017 Elsevier Ltd. All rights reserved.
ISSN 0263-8223
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