The magnitude and distribution of contact stress on the metal-to-metal seal interface premium connection has been confirmed as a direct factor sealing integrity. In this study, method evaluating sealability by measuring seals with ultrasonic phased array is investigated. A loading system measurement cone-cone samples were created. recommended detection focusing -deflection, time compensation su...

Objective(s): Biodegradable film is widely used because it is free from synthetic substances and does not lead to environment pollution. This study aimed to prepare and characterize biodegradable sago starch films loaded with Carboxymethyl Cellulose nanoparticles. Methods: Sago starch films were prepared and plasticized with sorbitol/ glycerol by t...

objective: one of the principle purposes of root canal obturation is to obtain hermetic sealing of the root canal system. according to the development of technology, many materials are now used in root canal filling. an in vitro dye leakage study was performed to evaluate the apical sealability of white-colored mineral trioxide aggregate (wmta) and gray-colored portland cement (gpc) when used a...

In the process of high flow rate fracture and gas production, sealing performance premium connection decreases due to dynamic load vibration downhole tubing strings, which may cause accidents. Existing static analysis methods cannot effectively explain this phenomenon. The main objective paper is propose a novel analytical method for evaluating connection. paper, model surfaces established base...