Method and device for measuring elongation under pressure gaseous environment

• Main Authors: SONG WEICHEN, LI BA, WANG BING, XIN MENG, JIANG ZHIYANG, XI CHUNXIAO, JIA SHUJUN, LIU QINGYOU, LI YI, WANG ZHI, LI CHUNYAN
• Format: Patent
• Language: Chinese; English
• Published: 01.03.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to the technical field of hydrogen energy detection, in particular to a method and a device for measuring elongation under a pressure gaseous environment, and the method comprises the following steps: preparing a pipeline steel test sample with a first scale and a second scale attached to a test area; fixing the fixed areas at the two ends of the test sample through the hydrogen test box and the upper and lower tensile clamps of the slow tensile instrument, so that the test area is positioned in the sealed hydrogen test box; performing a tensile test on the pipeline steel test sample under a target condition, and collecting video and audio data of the tensile test based on the data acquisition unit; and acquiring the displacement and elongation of the pipeline steel test sample during fracture based on the video and audio data of the tensile test. The problems that in the prior art, the measuring error is large, the size of measuring equipment is large, the measuring safety is poor, and