To produce thin grooves in the tread portion of tires, tire molds contain a multitude of sipes, which are thin metal inserts that project into the tread rubber during molding and curing. The geometric design and location of sipes is based on tire performance as well as appearance. A completèfamily' of tires, typically consisting of a dozen or more tire sizes with similar tread designs, will req...

The subsurface defect in the wheel tread caused from Rolling Stock Fatigue (RCF) has become more danger in high speed railway. The conventional UT and phased array UT have deficiency to find the subsurface defect from the tread surface because of limitation of ultrasonic near field. In this paper, the subsurface defect is studied by simulation and experimental results with ultrasonic technique....

It is generally known that the groove on tire tread can increase friction force between and road surface under wet condition because of improvement drainage performance. Although wheel actual railway rolling stocks have a turning trace like tread, characteristics tangential contact wheel/rail not clarified in detail. In this study, measurement using pair small cylindrical specimens was carried ...

Tire-tread material has a zinc (Zn) content of about 1 wt %. The quantity of tread material lost to road surfaces by abrasion has not been well characterized. Two approaches were used to assess the magnitude of this nonpoint source of Zn in the U.S. for the period 1936-1999. In the first approach, tread-wear rates from the automotive engineering literature were used in conjunction with vehicle ...

Patients with epidermolysis bullosa (EB) provide a unique and complex challenge for the anaesthesiologist. This is rare inherited group of diseases characterized by excessive fragility skin mucous membranes. These patients tolerate compressive forces to but barely friction shearing forces. Major challenges anaesthetist include establishing adequate monitoring without damaging skin, issues posit...

The subsurface defect in the wheel tread caused from Rolling Stock Fatigue (RCF) has become more danger in high speed railway. The conventional UT and phased array UT have deficiency to find the subsurface defect from the tread surface because of limitation of ultrasonic near field. In this paper, the subsurface defect is studied by simulation and experimental results with ultrasonic technique....

This paper discusses the use of Linear Mixed Models (LMM) and Generalized Linear Mixed Models (GLMM) to predict the wear and damage trajectories of railway wheelsets for a fleet of modern multiple unit trains. The wear trajectory is described by the evolution of the wheel flange thickness, the flange height and the tread diameter; whereas the damage trajectory is assessed through the probabilit...