Accurate Real Area of Contact Measurements on Polyurethane

An Automatic Technique for Accurate Non-contact Structural Deformation Measurements

This paper presents an automatic, close-range photogrammetric process developed to measure point-wise 2D deformations of a concrete beam during a loading experiment. Required accuracy was better than 1 mm. A non-contact method is proposed, which is simple to implement and provides almost online results that meet the accuracy requirements fully. This technique requires only one known distance be...

environmental effects of gol-e-gohar iron ore mine on groundwater of the area

gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

Contact area measurements reveal loading-history dependence of static friction.

We perform quantitative measurements of the actual area of contact, A, formed by two rough solids that are subjected to different normal loading protocols. We show that microscopic motion, induced by Poisson contraction or expansion, produces a strong memory dependence of on the loading history with a large corresponding influence on the system's frictional strength. These effects, together wit...

Can foot anthropometric measurements predict dynamic plantar surface contact area?

BACKGROUND Previous studies have suggested that increased plantar surface area, associated with pes planus, is a risk factor for the development of lower extremity overuse injuries. The intent of this study was to determine if a single or combination of foot anthropometric measures could be used to predict plantar surface area. METHODS Six foot measurements were collected on 155 subjects (97 ...

Contact Measurements on Atomic BEC