Comparison of cohesive powder flowability measured by Schulze Shear Cell, Raining Bed Method, Sevilla Powder Tester and new Ball Indentation Method

Ball Indentation on Cohesive Powder Beds

13 In the shear deformation of powder beds beyond the quasi-static regime the shear stress is dependent 14 on the strain rate. Extensive work has been reported on the rapid chute flow of large granules but the 15 intermediate regime has not been widely addressed particularly in the case of cohesive powders. 16 However in industrial powder processes the powder flow is often in the intermediate r...

Ball indentation on powder beds for assessing powder flowability: Analysis of operation window

Article history: Received 30 September 2016 Received in revised form 5 January 2017 Accepted 21 January 2017 Available online 24 January 2017 The characterisation of bulk behaviour of cohesive powders is very important in processing of particulate solids, e.g. for reliable powder flow out of storage vessels. For filling and dosing of small quantities of powders in capsules and for dispersion in...

solution of security constrained unit commitment problem by a new multi-objective optimization method

چکیده-پخش بار بهینه به عنوان یکی از ابزار زیر بنایی برای تحلیل سیستم های قدرت پیچیده ،برای مدت طولانی مورد بررسی قرار گرفته است.پخش بار بهینه توابع هدف یک سیستم قدرت از جمله تابع هزینه سوخت ،آلودگی ،تلفات را بهینه می کند،و هم زمان قیود سیستم قدرت را نیز برآورده می کند.در کلی ترین حالتopf یک مساله بهینه سازی غیر خطی ،غیر محدب،مقیاس بزرگ،و ایستا می باشد که می تواند شامل متغیرهای کنترلی پیوسته و گ...

Method for Improving Consolidation of Powder Resin

Synthesis and characterization of Graphene Oxide in suspension and powder forms by chemical exfoliation method

In this study, an efficient and facile technique for preparing graphene oxide in suspension and powder forms was presented based on a modification on Hummers' method followed by an additional ultrasonic process. The method involved the provision of graphene oxide from graphite by reaction of potassium permanganate and sulfuric acid with stabilizing the medium complex. Furthermore, this study ev...