Slug rivet assembly modeling and effects of procedure parameters on the quality of riveted lap joints

Lei, Changyi; Bi, Yunbo; Li, Jiangxiong; Ke, Yinglin

doi:10.1177/1687814018798397

Cited by 4 publications

(3 citation statements)

References 20 publications

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“…To achieve the riveting of slug rivet, automatic-riveting has been developed in aircraft industry [17,32]. Two additional procedure parameters, movement synchronism of the riveting dies and rivet protruding height, need to be taken into account and optimised during rivet installation process, which significantly improved the fatigue performance of riveted joint [33]. As shown in Figure 9b, except the region in the vicinity of countersunk hole, the interference value and the variation trends of the distribution curves almost remain constant for different protruding height.…”

Section: Design Parameters 4211 Rivetmentioning

confidence: 99%

A review on solid riveting techniques in aircraft assembling

Zhao

Zheng

et al. 2020

Manufacturing Rev.

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Solid riveting is the most widely used joining technique in aircraft assembly, and the current key problems affecting practical application and reliable lifting are concentrated on static strength and fatigue. This paper aims to present a practical review on current practice and novel techniques of solid riveting for aircraft applications in order to obtain a thorough understanding of the underlying mechanisms of defect development to assist industrial users to find pragmatic solutions for safe life extension of components. At first, the current status of solid riveting processes is reviewed, and the key influencing factors on static/fatigue failure of riveted joints are identified. Effects of solid riveting design parameters, manufacturing parameters, residual stress, load transfer and secondary bending on static and fatigue strengths of riveted lap joints are discussed, followed by a review of the state-of-the-art solutions that deal with static/fatigue failures. Furthermore the new development in solid riveting techniques, including the use of different materials and riveting processes, is addressed. Finally, future research perspective and applications industrial riveting is presented.

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Section: Design Parameters 4211 Rivetmentioning

confidence: 99%

A review on solid riveting techniques in aircraft assembling

Zhao

Zheng

et al. 2020

Manufacturing Rev.

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“…Aircraft factories, research institutes, and universities in China have cooperated vigorously in recent years. 4 – 10 For example, Chengdu Aircraft Group, Xi’an Aircraft Group, Northwestern Polytechnical University, Nanjing University of Aeronautics and Astronautics, and others have carried out research on automatic drilling and riveting systems. The Maozhen Gong’s team of Beijing University of Aeronautics and Astronautics used a laser ranging sensor to adjust the robot’s hole-making posture to intelligently adjust the verticality of the end of an aerial hole-making robot.…”

Section: Introductionmentioning

confidence: 99%

Detecting the normal-direction in automated aircraft manufacturing based on adaptive alignment

et al. 2020

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In aircraft manufacturing, the vertical accuracy of connection holes is important indicator of the quality of holes making. Aircraft products have high requirements for the vertical accuracy of holes positions. When drilling and riveting are performed by an automatic robotic system, assembly errors, bumps, offsets and other adverse conditions, can affects the accuracy of manufacturing and detection, and in turn the fatigue performance of the entire structure. To solve this problem, we proposed a technology for detecting the normal-direction based on the adaptive alignment method, built a mathematical model for posture alignment, and studied the calibration method and mechanism of the detection device. Additionally, we investigated techniques for error compensation using an electronic theodolite and other devices when the adaptive method is used for detection. In verification experiments of the method, multiple sets of results demonstrated that the key technical indicators are as follows: normal accuracy <0.5°, average deviation after correction =0.0667°. This method can effectively compensate the errors affecting hole making work in automated manufacturing, and further improve the positioning accuracy and normal-direction detection accuracy of the robot.

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“…Many riveting parameters must be examined for quality control besides crack detection, and rivet dimension is one of the key parameters that indicates the fatigue performance of lap joints [ 3 , 4 ]. Specifically, the geometric feature of the rivet head assists the estimation of the applied squeezing force, whereas the height of rivet indicates the interference value [ 5 , 6 ]. The accurate dimensions of rivets and riveted workpieces will feedback to the manufacturer for process optimization and mechanical study.…”

Section: Introductionmentioning

confidence: 99%

High-Accuracy 3-D Sensor for Rivet Inspection Using Fringe Projection Profilometry with Texture Constraint

Wang

Zhao

et al. 2020

Sensors

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Riveted workpieces are widely used in manufacturing; however, current inspection sensors are mainly limited in nondestructive testing and obtaining the high-accuracy dimension automatically is difficult. We developed a 3-D sensor for rivet inspection using fringe projection profilometry (FPP) with texture constraint. We used multi-intensity high dynamic range (HDR) FPP method to address the varying reflectance of the metal surface then utilized an additional constraint calculated from the fused HDR texture to compensate for the artifacts caused by phase mixture around the stepwise edge. By combining the 2-D contours and 3-D FPP data, rivets can be easily segmented, and the edge points can be further refined for diameter measurement. We tested the performance on a sample of riveted aluminum frame and evaluated the accuracy using standard objects. Experiments show that denser 3-D data of a riveted metal workpiece can be acquired with high accuracy. Compared with the traditional FPP method, the diameter measurement accuracy can be improved by 50%.

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Slug rivet assembly modeling and effects of procedure parameters on the quality of riveted lap joints

Cited by 4 publications

References 20 publications

A review on solid riveting techniques in aircraft assembling

A review on solid riveting techniques in aircraft assembling

Detecting the normal-direction in automated aircraft manufacturing based on adaptive alignment

High-Accuracy 3-D Sensor for Rivet Inspection Using Fringe Projection Profilometry with Texture Constraint

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