In a tractor hydraulic/transmission oil contamination is a serious problem as it works in such environment, these contamination may be in different forms dust particles, water, oxidation & corrosion products ,wear metal particles. Metal wear particles plays a significant role in failure of hydraulic system such as jamming of control valve, worn out of sealing element etc. Removal of these metal...

The harmfulness of fine dust generated by automobile brakes to the environment has recently received attention. Therefore, we aimed analyze and regulate brake wear particles in dynamometers. To accurately measure number particle mass, sampling system used needs minimize transportation losses reduce residence time enclosure system. measurement currently can estimate main loss but cannot evaluate...

Resumption of daily living activities is a basic expectation for patients provided with total knee replacements. However, there is a lack of knowledge regarding the impact of different activities on the wear performance. In this study the wear performance under application of different daily activities has been analyzed. In vivo load data for walking, walking downstairs/upstairs, sitting down/s...

This article starts with the analysis of contact between laser processing bionic brake drum unit body and pad performs force based on elastic mechanics mechanics. By using Preston equation, wear caused by is obtained, as well relevant factors influence rule which affects are found. During body, in order to reduce pad, height should be minimized. Besides, light intensity at centre spot reduced, ...

Periprosthetic osteolysis is a dominant factor in the success or failure of total hip prostheses. Polyethylene wear debris has been implicated in the process of bone resorption and subsequent implant loosening. The present study is the first to examine the effect of ultra high molecular weight polyethylene (UHMWPE) wear debris produced by a hip simulator on calvarial bone resorption in vitro. (...

Ferrography is a technique for analysing wear by means of the magnetic separation of wear particles. To evaluate its application in human joints, the results of the ferrographic analysis of saline washings of symptomatic human knees were compared with the results of the arthroscopic examination of the same knees. Ferrography was found to be an extremely sensitive monitor of articular erosion, w...

INTRODUCTION Ceramic-on-ceramic (CoC) bearings in total hip replacements (THR) have become of great interest due to the substantial improvements in the manufacturing techniques and material properties [1]. They have substantially lower wear rates than metal or ceramic on polyethylene bearings [2] and wear particles were found to be less biologically active than particles produced by other types...

The product development process usually encompasses a very complex and interdisciplinary environment in which product is seen by different views related with the life-cycle functions. An approach based on information models can provide an integrated view of the product, supporting also product information and knowledge (I&K) reuse acquired in previous development processes. This paper discusses...