Title: Wear monitoring of hydraulic reciprocating seal based on contact stress

Authors: Xiuxu Zhao; Jiaping Duan; Haile Tang; Appiah Emmanuel

Addresses: School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China ' School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China ' School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China ' School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China

Abstract: Timely and accurate monitoring of seal wear is crucial for ensuring the safe and efficient operation of hydraulic cylinders during actual operation. This study designed a fibre Bragg grating (FBG) sensor monitoring unit to achieve hydraulic cylinder seal wear monitoring based on sealing surface contact stress. Experimental research was conducted using a specially designed monitoring experimental system, and the results showed that as the wear of the piston rod seal increased, the circumferential and axial contact stresses of the seal first increased and then decreased. This study provides an effective means for further investigating the wear and performance degradation process of hydraulic reciprocating seals under actual usage conditions.

Keywords: hydraulic reciprocating seal; contact stress; wear monitoring; fibre grating sensor.

DOI: 10.1504/IJHM.2025.148504

International Journal of Hydromechatronics, 2025 Vol.8 No.3, pp.272 - 291

Received: 24 Apr 2024
Accepted: 29 Aug 2024
Published online: 09 Sep 2025 *

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