论文信息 - Non-destructive investigation of aluminum alloy hemmed joints using neutron radiography and X-ray computed tomography

Non-destructive investigation of aluminum alloy hemmed joints using neutron radiography and X-ray computed tomography

Abstract Methods for the non-destructive analysis of aluminum alloy hemmed joints for automotive applications were investigated to visualize the void size, volume fraction and shape within the adhesive fill. These defects can adversely affect the performance of hemmed joints by decreasing fatigue strength and corrosion resistance. Thermal neutron radiography and X-ray computed tomography were applied to visualize the voids. The void fraction within the adhesive fill was determined from the neutron images with the use of an image analysis thresholding method.

[1] The durability of bonded coated steel joints , 1993 .

[2] F. McNeill,et al. Non-destructive investigation of a time capsule using neutron radiography and X-ray fluorescence , 2016 .

[3] Roman Gr. Maev,et al. Ultrasonic Evaluation of Adhesive Coverage in Bonded Joints using a 2D Array Technique , 2013 .

[4] Taylan Altan,et al. Bending, flanging, and hemming of aluminum sheet − an experimental study , 1996 .

[5] K. Mori,et al. Fatigue Strength of High Strength Steel Sheets Joined by Hemming Process , 2015 .

[6] Taylan Altan,et al. Improvement of hem quality by optimizing flanging and pre-hemming operations using computer aided die design , 2000 .

[7] Davide Palumbo,et al. Assessment of the effect of defects on mechanical properties of adhesive bonded joints by using non destructive methods , 2016 .

[8] Mao-Jiun J. Wang,et al. Image thresholding by minimizing the measures of fuzzines , 1995, Pattern Recognit..