Ultrasonic welding of short carbon fiber reinforced PEEK with spherical surface anvils. (15th February 2022)

• Record Type: Journal Article
• Authors: Yang, Yuanduo; Li, Yang; Liu, Zeguang; Li, Yiang; Ao, Sansan; Luo, Zhen
• Is Part Of: Composites. Number 231(2022)
• Publication Date: 2022-02-15
• Subjects: Ultrasonic welding -- Carbon fiber reinforced thermoplastic (CFRTP) -- Spherical surface anvil -- Scattered weld -- Energy director-less; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2021.109599
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: Ultrasonic welding of carbon fiber reinforced thermoplastic (CFRTP) has attracted increased attentions from researchers in the automotive and aerospace industries. This paper proposes a novel ultrasonic welding method for focusing the welding energy at the desired location without using the energy director (ED). An anvil with a spherical surface is used in the welding system instead of a conventional flat anvil. Short carbon fiber reinforced polyether ether ketone (CF/PEEK) is employed as the research material. The effects of spherical radius and welding energy on the weld formation are investigated. The microstructure, tensile-shear property, and fracture characteristics of the joints are also analyzed. The results show that the using of a spherical surface anvil can effectively concentrates the welding energy and therefore, reduces the scattered welds.