External pressure loading air bag

• Main Authors: LIU YANTAO, CHEN HAO, LIU YANMAO, NI JINGDA
• Format: Patent
• Language: English
• Published: 07.01.2015
• Subjects: MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The utility model relates to the technical field of aerospace, specifically to an external pressure loading air bag. The air bag aims to be made of a wear-proof material, save cost and greatly reduce test preparing time. The air bag is characterized by comprising an air bag unit (1), a band (2) and a rib (3). The air bag unit (1) sleeves the outer surface of a test element (5). The band (2) sleeves the outwall of the air bag unit (1). The inner side of the rib (3) is fixedly connected to the outwall of the air bag unit (1), and the outer side is fixedly connected to the inner side of the band (2). The air bag carries out comparison tests with the conventional external pressure loading method. An external pressure cylinder and the new air bag are used for loading the same cylinder section to the external pressure load of 45KPa, and the key point stress values are measured. A plurality of test measuring results are compared and used for working out a matched curve, the measuring structure has good repeatability and the new air bag achieves the loading effects of the conventional external pressure cylinder.