Study on the Fracture Characteristics and Mechanism of Used Drip Irrigation Tape Under Different Stretching Speeds

Haiyang Liu, Haipeng Lan, Xirui Yang, Kun Li, Zhanjun Hu, Shengyou Chu, Shuya Li, Long Ouyang, Tian Zhang, Hong Zhang () and Peiyu Chen ()
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Haiyang Liu: College of Mechanical and Electronic Engineering, Tarim University, Alaer 843300, China
Haipeng Lan: College of Mechanical and Electronic Engineering, Tarim University, Alaer 843300, China
Xirui Yang: College of Mechanical and Electronic Engineering, Tarim University, Alaer 843300, China
Kun Li: College of Mechanical and Electronic Engineering, Tarim University, Alaer 843300, China
Zhanjun Hu: College of Mechanical and Electronic Engineering, Tarim University, Alaer 843300, China
Shengyou Chu: College of Mechanical and Electronic Engineering, Tarim University, Alaer 843300, China
Shuya Li: College of Mechanical and Electronic Engineering, Tarim University, Alaer 843300, China
Long Ouyang: College of Mechanical and Electronic Engineering, Tarim University, Alaer 843300, China
Tian Zhang: College of Mechanical and Electronic Engineering, Tarim University, Alaer 843300, China
Hong Zhang: College of Fashion and Textiles, Tarim University, Alaer 843300, China
Peiyu Chen: College of Mechanical and Electronic Engineering, Tarim University, Alaer 843300, China

Agriculture, 2025, vol. 15, issue 19, 1-20

Abstract: The crushing of used drip irrigation tape is a crucial step in the recycling and reuse of drip irrigation tapes. Incomplete crushing and low efficiency are among the main factors restricting its reprocessing. Investigating the fracture characteristics and the mechanism of fracture during the crushing process is key to solving this problem. Therefore, this study constructs a stretching fracture platform to investigate the influence of stretching speed on the fracture characteristics and reveals the fracture mechanism by analyzing fracture morphology, force-displacement curves, fracture energy, and microstructure. The results show that as the speed increases, the limit strain decreased from 117.7% to 38.7%, and the fracture location always occurs at the junction between the necked and non-necked area, the fracture mode transitions from ductile fracture to brittle fracture, the deformation mode shifts from being dominated by elastoplastic deformation to being dominated by elastic deformation, and the mechanical response curve changes from five stages to three stages. When the stretching speed increases from 60 mm/s to 70 mm/s, a jump phenomenon is observed in macroscopic and microscopic. As the speed increases, the total energy absorbed by the drip irrigation tape decreases from 1.29 × 10 −2 J/mm 3 to 0.39 × 10 −2 J/mm 3 . Brittle fracture primarily absorbs energy for the disintegration and fracture of lamellae in the spherulites at the fracture surface. Ductile fracture primarily absorbs energy for the extension of the fibrous structure, and the mechanical properties of the necked area are strengthened, which leads to the fracture location always occurring at the junction between the necked and non-necked area.

Keywords: used drip irrigation tape; crushing of drip irrigation tape; mechanical characteristics; microstructure; fracture mechanism (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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