Research on the Fatigue Strength of Brazed Joints in Gas-Wave Refrigerator Oscillating Tubes Based on Cohesive Zone Model

• Published in: Applied sciences Vol. 14; no. 19; p. 8723
• Main Authors: Zhang, Yongle, Xing, Aidong, Sang, Cheng, Li, Qingsheng
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.10.2024
• Subjects: Alloys; Aluminum; brazed joints; cohesive zone model; Composite materials; Copper; Crack initiation; Crack propagation; Fatigue; fatigue life; Fatigue testing machines; Materials; Metal fatigue; Natural gas; Propagation; Refrigerators; Stainless steel; VUMAT subroutine

Gas-wave refrigerators are widely used devices that utilize gas pressure to produce wave motion inside an oscillating tube for high-power refrigeration. This paper manufactures the core component of gas-wave refrigerators—the oscillating tubes—using hub and blade brazing. The tensile strength and fa...