A review on material fracture mechanism in incremental sheet forming

Ai, Sheng; Long, Hui

doi:10.1007/s00170-019-03682-6

Cited by 45 publications

(10 citation statements)

References 100 publications

(184 reference statements)

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“…The incremental sheet forming (ISF) process has emerged as a promising method for forming sheets in small batches. This process is efficient and provides cost reductions in the manufacturing process, making it a potential alternative to the conventional sheet stamping process [ [1]-0].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of surface roughness and wall thickness in the incremental stamping process with variation in the degrees of freedom of the contact tool

Silva¹,

Souza²,

Patrício³

2021

Preprint

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In this study, the performance of a rotating semi-spherical tool (with two degrees of freedom) is compared with another rigid semi-spherical tool, both with a diameter of 8.0 mm. The stamping is performed on AA1100 aluminium blanks with a thickness of 0.8 mm, using a helical strategy and single point incremental forming technique, with a feed rate of 1000 mm/min, a step depth of 0.1 mm, without rotation on the machine spindle and petroleum jelly as a lubricant. The behaviour of Ra and Rq roughness and wall thickness is evaluated during the tests. Scanning electron microscopy and dispersive energy spectroscopy are used to observe the wear mechanisms on the surface of the samples. On this basis, the tools for incremental stamping must promote continuous contact with the blank without generating excessive friction. Our results show that the rigid tool presents the best working conditions for the AA1100 aluminium sheets because it generates less roughness in the stamped parts, when compared with the rotating tool (~ 54% lower in the final average of the Ra roughness). The scanning electron microscopy image reveals the presence of adhesion both on the contact tip of the rotational tool and on the rigid tool, showing that the adhesive wear mechanism is predominant in the single point incremental forming process and influences the final roughness of the stamping cones.

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Section: Introductionmentioning

confidence: 99%

Evaluation of surface roughness and wall thickness in the incremental stamping process with variation in the degrees of freedom of the contact tool

Silva¹,

Souza²,

Patrício³

2021

Preprint

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“…The SPIF process can be performed on either a CNC milling machine [27], with the aid of a robot that follows a certain trajectoryor on a specially designed machine tool, such as the machine produced by the Japanese company, Amino. Numerical and experimental research conducted regarding SPIF has focused, for the most part, on the evaluation of the forming mechanism [28], the fracture mechanism and formability in SPIF, formally named spifability [29], on the determination of the principal strain and thickness reduction [30], residual stresses [31], as well as on the determination of the forces in the forming process [32,33] The applications of SPIF of TWB sheets combine the advantages of both processes. The most important applications of using the SPIF of TWB sheets are found in the automotive industry, for obtaining lighter parts which help reduce the weight of the entire automobile.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on the Behaviour of Metal Active Gas Tailor Welded Blanks during Single Point Incremental Forming Process

Oleksik

Dobrotă

Racz

et al. 2021

Metals

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The present paper aims to study the behaviour of Metal Active Gas (MAG) tailor welded blanks during the single point incremental forming process (SPIF) from an experimental point of view. The single point incremental forming process was chosen for manufacturing truncated cone and truncated pyramid shaped parts. The same material (S355) and the same thickness (0.9 mm) were selected for the joining of blank sheets because the main goal of the paper was to study the influence of the MAG welding process throughout the SPIF process. A Kuka robot, equipped with a force transducer and an optical measurement system were used for manufacturing and evaluating the parts by SPIF. The selected output data were major and minor strain, thickness reduction, forces and springback at the SPIF process. Another line test was performed to evaluate the formability in SPIF. The main conclusion of the paper is that during the SPIF process, fractures occur in one side welded blanks even at moderate wall angles, while in the case of double side welded blanks there is a decrease of formability but parts can still be produced at moderate angles (55 degrees) without any problems.

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“…Kumar et al [15] gave a comparative analysis of the current achievement on the forming force in ISF. Ai and Long [16] summarised the material fracture mechanism and behaviour in ISF. Taleb-Araghi et al [17], Liu et al [18] and Peng et al [19] reviewed the development of variants of ISF including hybrid ISF, heat-assisted ISF and DSIF.…”

Section: Introductionmentioning

confidence: 99%

Incremental sheet forming of thermoplastics: a review

Zhu

Popov

2020

Int J Adv Manuf Technol

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Incremental sheet forming (ISF) is a promising flexible manufacturing process, which has been tested in sheet forming of various metallic materials. Although ISF-based forming of thermoplastics is relatively new, it has drawn considerable interests and significant progress has been made in recent years. This paper presents a review of concurrent research on the emerging trend of thermoplastic-focused ISF processes. Attention is given to the processing conditions including process setup, process parameters and forming forces. The deformation mechanism and failure behaviour during ISF of thermoplastics are evaluated, which leads to detailed discussions on the formability, effect of different process parameters and the forming quality such as geometric accuracy, surface finish and other consideration factors in ISF of thermoplastics. A comparison of important similarities and differences between ISF of thermoplastic and metallic materials is made. Finally, a brief discussion is provided on the technical challenges and research directions for ISF of thermoplastic materials in the future.

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A review on material fracture mechanism in incremental sheet forming

Cited by 45 publications

References 100 publications

Evaluation of surface roughness and wall thickness in the incremental stamping process with variation in the degrees of freedom of the contact tool

Evaluation of surface roughness and wall thickness in the incremental stamping process with variation in the degrees of freedom of the contact tool

Experimental Research on the Behaviour of Metal Active Gas Tailor Welded Blanks during Single Point Incremental Forming Process

Incremental sheet forming of thermoplastics: a review

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