scholarly journals Application of the Incremental Hole-Drilling Method for the Determination of Residual Stresses in Glass-Fiber Reinforced Composites

2014 ◽  
Vol 996 ◽  
pp. 262-268
Author(s):  
Frank Schweizer ◽  
Marius Dickele ◽  
Michael Luke
Keyword(s):  
Residual Stresses ◽  
Glass Fiber ◽  
Fiber Reinforced Composites ◽  
Hole Drilling ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Hole Drilling Method ◽  
Glass Fiber Reinforced ◽  
Incremental Hole Drilling ◽  
Drilling Method

The incremental hole-drilling method was adapted for the measurement of residual stresses in polymer based composite materials. The parameters of the hole drilling process and the strain measurement in non-reinforced and 70 weight-percent glass-fiber-reinforced polypropylene were investigated. Calibration coefficients for the calculation of the residual stresses in the orthotropic material systems were determined by Finite Element Analysis. By means of application of the method to unidirectional and cross-ply glass-fiber reinforced composites the residual stresses, maximum measurable depths and measurement uncertainties could be derived.

scholarly journals The Effect of Specimen Size on Residual Stresses in Friction Stir Welded Aluminum Components

2014 ◽  
Vol 996 ◽  
pp. 445-450 ◽  
Author(s):  
Wulf Pfeiffer ◽  
Eduard Reisacher ◽  
Michael Windisch ◽  
Markus Kahnert
Keyword(s):  
Residual Stresses ◽  
Specimen Size ◽  
Hole Drilling ◽  
X Ray Diffraction ◽  
X Ray ◽  
Friction Stir ◽  
Metal Parts ◽  
Hole Drilling Method ◽  
Incremental Hole Drilling ◽  
Drilling Method

Friction stir welding (FSW) is a well-known technique which allows joining of metal parts without severe distortion. Because FSW involves less heat input relative to conventional welding, it may be assumed that cutting specimens from larger friction stir welded components results in a negligible redistribution of residual stresses. The aim of the investigations was to verify these assumptions for a welded aluminum plate and a circumferentially-welded aluminum cylinder. Strain gage measurements, X-ray diffraction and the incremental hole drilling method were used.

Design and analysis of glass fiber reinforced composites

2020 ◽  
Vol 26 ◽  
pp. 2491-2494
Author(s):  
J. Jayapriya ◽  
D. Muruganandam ◽  
M. Shantharaj ◽  
S. Thayumanavan ◽  
S. Suraj ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced
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