Some Aspects of the Application of the Hole Drilling Method on Plastic Materials

2016 ◽  
pp. 371-380 ◽  
Author(s):  
Arnaud Magnier ◽  
Andreas Nau ◽  
Berthold Scholtes
Keyword(s):  
Hole Drilling ◽  
Hole Drilling Method ◽  
Plastic Materials ◽  
Drilling Method

Measurements of residual stresses in a welded orthotropic steel deck by the hole-drilling method considering stress biaxiality

2021 ◽  
Vol 230 ◽  
pp. 111690
Author(s):  
Yadong Li ◽  
Jun Wu ◽  
Bin Qiang ◽  
Siting Zhou ◽  
Weiqin Liu ◽  
...  
Keyword(s):  
Residual Stresses ◽  
Hole Drilling ◽  
Orthotropic Steel Deck ◽  
Hole Drilling Method ◽  
Drilling Method ◽  
Steel Deck

Improvement and validation of residual stress measurement in composite laminates using the incremental hole-drilling method

2021 ◽  
Vol 154 ◽  
pp. 103715
Author(s):  
Xiaodong Liu ◽  
Xiaodong Wang ◽  
Zhidong Guan ◽  
Ting Jiang ◽  
Kunhao Geng ◽  
...  
Keyword(s):  
Residual Stress ◽  
Composite Laminates ◽  
Stress Measurement ◽  
Residual Stress Measurement ◽  
Hole Drilling ◽  
Hole Drilling Method ◽  
Incremental Hole Drilling ◽  
Drilling Method

Residual Stress Measurements in an Autofrettage Tube Using Hole Drilling Method

2012 ◽  
Vol 134 (5) ◽  
Author(s):  
Hamid Jahed ◽  
Mohammad Reza Faritus ◽  
Zeinab Jahed
Keyword(s):  
Residual Stress ◽  
Residual Stresses ◽  
Hoop Stress ◽  
Test Method ◽  
Test Material ◽  
Hole Drilling ◽  
Hole Drilling Method ◽  
Ring Sample ◽  
Drilling Method ◽  
American Society

Relieved strains due to drilling hole in a ring sample cut from an autofrettage cylinder are measured. Measured strains are then transformed to residual stresses using calibration constants and mathematical relations of elasticity based on ASTM standard recommendations (American Society for Testing and Materials, ASTM E 837-08, 2008, “Standard Test Method for Determining Residual Stresses by the Hole-Drilling Strain-Gage Method,” American Society for Testing and Materials). The hydraulic autofrettage is pressurizing a closed-end long cylinder beyond its elastic limits and subsequently removing the pressure. In contrast to three-dimensional stress state in the autofrettage tube, the stress measurement in hole drilling method is performed on a traction free surface formed from cutting the ring sample. The process of cutting the ring sample from a long autofrettaged tube is simulated using finite element method (FEM) and the redistribution of the residual stress due to the cut is discussed. Hence, transformation of the hole drilling measurements on the ring slice to the autofrettage residual stresses is revealed. The residual stresses are also predicted by variable material properties (VMP) method (Jahed, H., and Dubey, R. N., 1997, “An Axisymmetric Method of Elastic-Plastic Analysis Capable of Predicting Residual Stress Field,” Trans. ASME J. Pressure Vessel Technol., 119, pp. 264–273) using real loading and unloading behavior of the test material. Prediction results for residual hoop stress agree very well with the measurements. However, radial stress predictions are less than measured values particularly in the middle of the ring. To remove the discrepancy in radial residual stresses, the measured residual hoop stress that shows a self-balanced distribution was taken as the basis for calculating residual radial stresses using field equations of elasticity. The obtained residual stresses were improved a lot and were in good agreement with the VMP solution.

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