Download Advances in strength of materials : selected peer reviewed by Liviu Marsavina PDF

By Liviu Marsavina

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Read Online or Download Advances in strength of materials : selected peer reviewed papers from the Strength of Materials Laboratory at 85 years, 21-22 November 2008, Timisoara, Romania PDF

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Radiography testing, capable to document detected defect, was strict requirement when welding procedures replaced riveting in joining responsible structural components. Uncertain quality of welded joint and unpleasant view, both depended on welders knowledge and skill, pressed the customers and producers to define minimum quality level for welded structures, and radiography, that time the only available non-destructive testing (NDT) method for reliable detection of eventual defects was applied.

Degmova, U. Gaitzsch, J. Eckert, L. 192196. Key Engineering Materials Vol. 43 Fractal analysis of fracture surfaces of steel Charpy specimens C. ro Keywords: profile, fracture surfaces, fractal dimension, Charpy test, profilometer, interferometry. Abstract. The article focuses on the technical measurements which could be applied to the fracture surfaces of the steel Charpy specimens in order to apply the Fractal Analysis. One could calculate the fractal dimension not directly for a fracture, but for a profile of the fracture.

That means 40 millions of pixels per second. Image J can process only binary (black and white) images, which means a segmentation of the image. Through this segmentation one can distinguish the object (the crack) from the background. Stylus profilometer Height amplitude (µm) The machine used in this study is a KLA-Tencor P-10, high precision stylus profilometer, which uses a sharp stylus (2 µm tip radius) to quantitatively measure surface topography. The stylus is held at a fixed position and the sample is scanned on a precision translation stage to make measurements.

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