Abrasion susceptibility of highway pavements has a great impact on the skid resistance, and consequently accident rate. A rotational abrasion device is introduced, providing the advantage of field simulation of wheel passage, in comparison with existing standard methods. The device was used to measure abrasion susceptibility of concrete pavements with different textures. The obtained results we...

We present a method to recognize a complicated curved object from an image contour. We are developing a system that automatically measures train wheel abrasion from its contour image. Because a train wheel consists of a curved surface, the transformation of the image contour due to position variation affects the measurement accuracy. The 3D shape model of the train wheel is analyzed to compute ...

Single screw compressors (SSCs) have been used in many fields. Compared with other kinds of compressors, the SSC should have many advantages due to its symmetrical structure and well balanced radial gas pressure on the screw rotor. However, its durability is not as good as expected. After operating for several thousand hours, its flow rate often decreases sharply. The essential reason is that t...

the plain carbon steel “ck45” has relatively well mechanical and metallurgical properties and low cost. the purpose of this research was the property evaluation of this steel on abrasive wear and impact for using in plows and other tillage tools. tillage tool should resist in abrasive wear and impact simultaneously. several heat treatments were done on specimens of this steel. a standard test d...

-Hardfacing is one of the most useful and economic ways to improve the performance of components submitted to severe wear conditions. A study was made to compare the microstructure and abrasion resistance of hardfacing alloys reinforced with primary chromium carbides, the hardfacing alloys were deposited onto M.S. plate by SMAW process. Two different commercial hardfacing electrodes were employ...

the aim of the present study was to investigate the effect of quenching and tempering temperatures on themicrostructure, mechanical properties and the wear characteristics of medium carbon-high chromium wear resistantsteel. in addition, the dominant wear mechanisms were studied. for this purpose, austenitizing and temperingtemperatures were selected in the ranges of 900- 1000 °c and 300- 500 °c...

There are different test methods to determine the abrasion resistance of concrete subjected to number of various types of abrasion. There are number of different tests used in various countries and it is clear that there is no single test that adequately measures the abrasion resistance of concrete under all conditions. This paper covers the summary and classification of the various abrasion te...

This paper presents the characterization of a secondary cone crusher concave liner made Hadfield steel used in Chilean mining after crushing copper minerals during all service life. During use, suffers indentation (cold working) and abrasion; this combination provides with layer that constantly renews itself, maintaining surface highly resistant to abrasive wear. The results presented here were...