The influence of tool geometry and process parameters on joined sheets by clinching

Tenorio, Marcio Brandani; Lajarin, Sérgio Fernando; Gipiela, Manolo Lutero; Marcondes, Paulo Victor Prestes

doi:10.1007/s40430-018-1539-0

Cited by 30 publications

(10 citation statements)

References 22 publications

(24 reference statements)

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“…In some studies, it is pointed out that the load capacity of joints produced by the mechanical clinching technique is primarily decided by the mechanical interlocking structure, which mainly includes the interlocking value ( t s ) and the neck thickness ( t n ) of two parameters 9,14,48 . A schematic drawing of joint geometric parameters is shown in Figure 6.…”

Section: Resultsmentioning

confidence: 99%

“…Simultaneously, the effect of process conditions (such as forming force, depth of die, grooved dimension of die, and diameter of punch) on clinched joints manufactured by the MCT was investigated. 12,13 Tenorio et al 14 systematically investigated the effect of instrument parameters and operating conditions on the clinched joints of MCT. The research conclusions were verified by comparing the simulation consequences and the experimental consequences.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of Al5052‐H32/PETG hybrid clinched joints

Ouyang

Chen

Ren

et al. 2022

J of Applied Polymer Sci

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The mechanical clinching technique with an extensible die is selected to connect the metal‐polymer hybrid structure in this article. Al5052‐H32 is chosen as the metallic material. Polyethylene terephthalate glycol (PETG) was chosen as the polymer material. The connection between Al5052‐H32 and PETG is accomplished under diverse forming forces. To evaluate the joinability of hybrid joints, the dimension parameters of hybrid joints are measured by inspecting the transverse section of clinched joints. To evaluate the reliability of joints, the tensile shear test and the energy absorption calculation are accomplished. Moreover, the effect of various forming forces on the mechanical characteristics and failure mode of the hybrid structure is analyzed. The results showed that the Al5052‐H32 sheet and PETG sheet could be effectively connected. The optimal forming force is 38 kN in this experiment. Under this condition, the maximum tensile shear load and the maximum energy absorption value are 1520.16 N and 4.69 J, respectively.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental investigation of Al5052‐H32/PETG hybrid clinched joints

Ouyang

Chen

Ren

et al. 2022

J of Applied Polymer Sci

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show abstract

“…An analysis of the joining zone with imaging methods is essential to evaluate and categorise process phenomena and to qualitatively assess the clinch joints. Characteristic dimensions of a clinch joint are the undercut (

), the bottom thickness (

), and the neck thickness (

), which significantly affect the joint strength and thus the joint quality [ 22 ]. While the neck thickness predominantly has an impact on the shear strength of a clinch joint, the undercut mainly influences the cross-tensile and peeling strength [ 23 ].…”

Section: Materials and Methodsmentioning

confidence: 99%

Clinching of Thermoplastic Composites and Metals—A Comparison of Three Novel Joining Technologies

et al. 2021

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Clinching continuous fibre reinforced thermoplastic composites and metals is challenging due to the low ductility of the composite material. Therefore, a number of novel clinching technologies has been developed specifically for these material combinations. A systematic overview of these advanced clinching methods is given in the present paper. With a focus on process design, three selected clinching methods suitable for different joining tasks are described in detail. The clinching processes including equipment and tools, observed process phenomena and the resultant material structure are compared. Process phenomena during joining are explained in general and compared using computed tomography and micrograph images for each process. In addition the load bearing behaviour and the corresponding failure mechanisms are investigated by means of single-lap shear tests. Finally, the new joining technologies are discussed regarding application relevant criteria.

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“…Clinched joints can be designed in optimum or compromise versions according to known load paths or manufacturing capabilities. The tool geometries used influence the local and inhomogeneously distributed shape changes as Tenario shows in [9] by using a clinched joint with closed die of a 10 mm diameter. In addition to the tool geometries, the process parameters [10] and the surface conditions [11] of the joined parts also influence the inhomogeneous shape changes at the clinch joint.…”

Section: Introductionmentioning

confidence: 99%

Design of clinched joints on the basis of binding mechanisms

Kalich

Füssel

2022

Prod. Eng. Res. Devel.

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The work carried out is based on the thesis properties of clinched joints are determined by the proportions of binding mechanisms form-closure, force-closure and material-closure. To describe the acting binding mechanisms and thus to derive the joint properties, detailed knowledge of the local effect of the individual binding mechanisms is necessary to ensure their targeted adjustment by the joining process. The targeted setting of different proportions of the binding mechanisms is achieved firstly via tool geometry and secondly via surface condition of the joined parts. An introduced form-closure component can be quantified by metallographic cross section with subsequent measurement of the quality-determining parameters such as undercut, penetration depth and neck thickness. To qualify the force-closure component, a torsional load can be applied mechanically at rotationally symmetrical clinch joints. This also allows the influence of different surface conditions on the tribological system to be quantified. Measurement of electrical resistance can reveal the binding mechanisms of force- and material-closure. These investigations are carried out on an aluminum joining part combination of the same type. As a result of these investigations, the clinched joints can be designed according to the load occurring in the later life cycle in the form of an optimum and compromise variant with regard to minimum loads to be transmitted mechanically, electrically with regard to low resistance or manufacturing with minimum energy input.

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The influence of tool geometry and process parameters on joined sheets by clinching

Cited by 30 publications

References 22 publications

Experimental investigation of Al5052‐H32/PETG hybrid clinched joints

Experimental investigation of Al5052‐H32/PETG hybrid clinched joints

Clinching of Thermoplastic Composites and Metals—A Comparison of Three Novel Joining Technologies

Design of clinched joints on the basis of binding mechanisms

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