Theoretical prerequisites for improving durability of fixed rolling bearing joints restored with anaerobic

Theoretical Prerequisites for Fiscal Sustainability Analysis

modification of nanoclay for improving the physico-mechanical properties of dental adhesives

هدف اصلی این مطالعه تهیه یک سامانه نوین چسب عاجی دندانی بر پایه نانورس پیوند شده با پلی متاکریلیک اسید، نانورس پیوند شده با پلی اکریلیک اسید، مخلوط نانوسیلیکا و نانورس پیوند شده با پلی متاکریلیک اسید، مخلوط نانوسیلیکا و نانورس پیوند شده با پلی اکریلیک اسید و نانورس پیوند شده با کیتوسان اصلاح شده با گلایسیدیل متاکریلات است. پیوند پلی متاکریلیک اسید و پلی اکریلیک اسید بر ری سطح نانورس در حضور و ...

Durability of Pressure Sensitive Adhesive Joints

Pressure sensitive mounting tapes provide a quick and effective fastening method compared to most mechanical joining techniques. Due to the viscoelastic nature of pressure sensitive adhesives their response to mechanical and climatic stress in terms of durability is different from most structural adhesives. While the feature of compensating differences in thermal expansion of bonded members and...

Prediction of long-term slake durability of clay-bearing rocks

A research program was conducted on different clay-bearing rocks selected from the Ilam, Sarpol-e Zahab and Tajarak regions (Iran) to predict their slaking characteristics. The new durability apparatus (nested mesh drums) separates disintegrated particles varying from > 25.4 to < 2 mm as the drums were rotated. On the basis of the particle size distribution, the disintegration ratio (DR) was us...

Precision instrumentation for rolling element bearing characterization.

This article describes an instrument to measure the error motion of rolling element bearings. This challenge is met by simultaneously satisfying four requirements. First, an axial preload must be applied to seat the rolling elements in the bearing races. Second, one of the races must spin under the influence of an applied torque. Third, rotation of the remaining race must be prevented in a way ...