The wear of the focusing tube is a very important feature of the abrasive water jet machining. Of all rejected focusing tubes, 85% are worn. Similary, the age of focusing tube influences the cut geometry and quality of machined surface. With regard to the stated, wearing of the focusing tube is subject of this paper. Focusing tube outlet diameter was measured as well as its influence on the sur...

Tyre wear is a complex phenomenon. It depends non-linearly on numerous parameters, like tyre compound and design, vehicle type and usage, road conditions and road sUliace characteristics, environmental conditions (e.g., temperature) and many others. Yet, tyre wear has many economic and ecological implications. The possibility to predict tyre wear is therefore of major importance to tyre manufac...

The friction and wear phenomena appear due to contact and relative motion between two solids. The evolution of contact conditions depends on loading conditions and mechanical behaviours. The wear phenomena are essentially characterized by a matter loss. Wear and friction are in interaction due to the fact that particles are detached from the solids. A complex medium appears as an interface havi...

In-service the degradation of compressor blade leading edges can have a disproportional effect on compressor efficiency. The high surface curvature in this region makes quantifying the surface finish of this sensitive and prominent region difficult. An automated technique that characterises the roughness of the leading edge in terms of areal parameters is presented. A set of ex-service blades o...

High density polyethylene is widely used in many applications which deal with slurry because of its high erosion resistance characteristics. Slurry a type erosive wear takes place when stream liquid hits solid body and results this body surface. affected by some parameters as material hardness, impact velocity, impact angle, slurry content, ambient temperature, particle size and particle s...

In transport of raw materials abrasive wear resistance is a requirement, which can be met with alumina ceramics. At certain locations additional impact load occurs, exacerbating the loss. As literature on impact-abrasive ceramics scarce this topic will researched in work. We selected variety commercial (90–96% Al2O3) and according to much more resistant – substantially expensive Zirconia Toughe...

This work presents a new model that predicts the wear results from impacts occurring between two solid bodies under both normal and compound impact, capability lacking existing approaches. frequently occurs in many engineering industrial situations depending on relative sizes of bodies, bulk material properties, number frequency impacts, damage can result. Although this eventually causes severe...

BACKGROUND/AIMS To determine the impact of prosthetic replacement of the ocular surface ecosystem (PROSE) treatment at 5 years. METHODS Retrospective review of clinical, manufacturing and quality databases at the Boston Foundation for Sight. RESULTS 121 patients who completed treatment and had 5-year follow-up data were identified from a cohort of patients (n=199) seen in consultation for P...

Abstract—The wear measuring and wear modelling are fundamental issues in the industrial field, mainly correlated to the economy and safety. Therefore, there is a need to study the wear measurements and wear estimation. Pin-on-disc test is the most common test which is used to study the wear behaviour. In this paper, the pin-on-disc (AEROTECH UNIDEX 11) is used for the investigation of the effec...