Fracture toughness determination is crucial for the design phase of pressure vessels, and, although ASTM E1820 and ISO 12135 fracture standards have existed some time, differences been reported in this property. This study investigates ductile behavior A516 Gr.70 vessel steel assesses estimating both standards. The steel’s tensile properties initiation (JIC) were evaluated, taking into account ...

This paper presents the study of tensile, flexural & moisture absorption properties of composites made from areca fibers, maize powder filler particles & epoxy resin. The specimens are prepared using hand lay-up techniques as per ASTM standard for different weight fractions of fiber, filler & matrix material. The specimens were tested as per ASTM standards. Experimental results showed that tens...

Results All methods use gram-negative bacteria as marker organisms and the measured endpoint is reduction on hands after test article application. ASTM E2755 includes Staph. aureus, more representative of a hand transmitted pathogen in healthcare environments. Both EN1500 and E1174 have unrealistic hand contamination procedures which necessitate evaluation of unrealistic volumes of product at e...

گونه چوبی راش (fagus orientalis) متعلق به تیره درختان خزان‏کننده و پهن­برگ یکی از مهمترین گونه­های چوبی صنعتی در ایران بوده که به طبقه گونه­های چوبی بی­دوام تعلق دارد. به­منظور ارزیابی نقش مواد استخراجی بر دوام اندک این گونه چوبی در برابر قارچ مولد پوسیدگی سفید رنگین‎کمان (trametes versicolor)، استخراج مواد از نمونه­های چوبی با ابعاد 2×2×2 سانتی‏متر توسط ترکیبی از حلال‏های آلی نظیر n- هگزان/اتا...

The present work deals with fitting literature data of ASTM Distillation curves and obtain a new correlation suitable to use in modeling when optimizing the refining processes, such as distillation, FCC, catalytic reforming, hydrotreating, etc.
 results showed that values predicted by are very good agreement range mean overall deviation (%MOD) is (0.305-0.585).