An angle sensor based on a sector ring patch antenna for bolt loosening detection

Wan, Chunfeng; Zheng, Zhiquan; Xue, Songtao; Xie, Liyu; Wan, Guo Chun

doi:10.1088/1361-665x/ac55d9

Cited by 10 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the ameliorative intelligent wrench is also equipped with an especially designed socket. A piezoelectric ceramic (PZT) patch is coupled to a normal socket to transmit and receive ultrasonic signals [22][23][24]. There is no need to permanently bond the sensor on the surface of each bolt head, which greatly improves the efficiency and application scope, and decreases cost.…”

Section: Methodsmentioning

confidence: 99%

Invention of smart tightening tool for directly controlling the preload of bolted joints

Zhang¹,

Liu²,

Gong³

et al. 2023

Smart Mater. Struct.

View full text Add to dashboard Cite

Bolted joints are widely used in industries to connect and fasten two separated components. During the assembly of bolted joints, torque wrench is commonly employed to control preload indirectly. Much scatter in preload will occur and decrease the reliability of mechanical product. This study invented a novel tightening tool, which could directly control preload with high accuracy in the process of tightening bolts. The novel tightening tool is composed of an ameliorative intelligent wrench and signal processing system. There are two characteristics or innovations in the intelligent wrench. First, an electric tripping structure with multi-level small-size lever is designed to ensure that the target preload can be controlled effectively when the threshold value is reached. Second, an intelligent socket integrated with PZT sensor is designed, which can avoid many PZT sensors being sticked on bolt heads and greatly reduce cost. In the signal processing system, the waveform tracking strategy based on phase-locked loop is proposed to obtain the stable phase difference, which improves the robustness of the calculation of echo time. Three types of bolts with different sizes were tested. The average preload error was approximatively 2%, validating the accuracy and effectiveness of our tightening tool.

show abstract

Section: Methodsmentioning

confidence: 99%

Invention of smart tightening tool for directly controlling the preload of bolted joints

Zhang¹,

Liu²,

Gong³

et al. 2023

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…Compared with the method based on clamping force monitoring, there are few reports on the bolt loosening angle measurement-based method. At present, the measurement of bolt loosening angle mainly includes radio waves processing-based methods [24][25][26] and vision-based methods [27][28][29][30]. By installing a radio frequency identification (RFID) tag or sector ring patch antenna (SRPA) on bolted joint structure, the radio waves processing-based method can measure the change of bolt angle.…”

Section: Introductionmentioning

confidence: 99%

“…However, the RFID-based method needs to design a complex structure to realize the switchlike mechanisms of the RFID tag and reader which limits the method can only measure bolt loosening angle changes of more than 20 • [24]. A minimal bolt loosening angle of 1/6 • can be detected by SRPA-based method [26], but the sensitivity easy to be affected by environment and installation and processing of the sensor. Due to its convenience of implementation, the vision-based bolt loosening detection method is favored by more and more researchers in recent years.…”

Section: Introductionmentioning

confidence: 99%

Proof-of-concept study of bolt connection status monitoring using fiber Bragg grating curvature sensor

Deng¹,

Wang²,

Tan³

et al. 2022

Smart Mater. Struct.

View full text Add to dashboard Cite

For connection status monitoring of bolted joint groups, a novel method with fiber Bragg grating (FBG) based curvature sensor is proposed. An FBG curvature sensor with an inextensible elastic matrix and an offset grating is adopted and clamped between a fixed support and the monitored bolt in a plane bending status. Based on the shape deformation of the FBG curvature sensor induced by the bolt loosening, the bending curvature change of the elastic matrix is measured by the FBG. By detecting the wavelength shift of the FBG induced by the matrix curvature variation, the relationship between the bolt loosening angle and the wavelength shift of FBG can be obtained, and hence the bolt connection status can be determined by the wavelength shift of FBG. Details of the proposed method are presented, and a surface-bonded FBG curvature sensor is designed, fabricated, and experimentally studied to verify the proposed method, and the parameters on sensing performance are also investigated. Experimental results show that the proposed method can monitor bolt loosening angle with high sensitivity and linear output by adjusting the parameters of the FBG curvature sensor. The looseness angle resolution of the proposed sensor can reach 0.0767°. This paper presents the first attempt to monitor bolt loosening angle using an FBG curvature sensor. With the advantages of high sensitivity and resolution, strong applicability, convenience and reusability for the maintenance of bolts, and ease of forming distributed sensor networks, the proposed method is able to provide a general solution for the on-line monitoring of bolt connection status for large-span distributed bolted-joint groups.

show abstract

A force-adaptive percussion method for bolt looseness assessment

Wang,

Zhou,

Kong

2024

J Civil Struct Health Monit

View full text Add to dashboard Cite

An angle sensor based on a sector ring patch antenna for bolt loosening detection

Cited by 10 publications

References 28 publications

Invention of smart tightening tool for directly controlling the preload of bolted joints

Invention of smart tightening tool for directly controlling the preload of bolted joints

Proof-of-concept study of bolt connection status monitoring using fiber Bragg grating curvature sensor

A force-adaptive percussion method for bolt looseness assessment

Contact Info

Product

Resources

About