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International Journal of Material Forming OnlineFirst articles

29-10-2020 | Original Research

Study on barrelling behavior of variable-diameter tubes in axial hydro-forging sequence

Axial hydro-forging sequence is an emerging approach in forming the variable-diameter tubes without thinning. However, after the batch production, a barrelling defect occurs at the end of the maximum diameter zone during the process. To …

Authors:
Lei Sun, Shengjie Yao, Jiguang Li, Caiyuan Lin, Guodong Wang, Guannan Chu

29-10-2020 | Original Research

Numerical modeling and anvil design of high-speed forging process for railway axles

Railway axles, which are an important component of railway vehicles, are generally manufactured using high-speed forging processes. To investigate the microstructure evolution and flow behavior during forging processes, a series of isothermal hot …

Authors:
Yakun Xu, Yan Zhang, Xincun Zhuang, Zhongyuan Cao, Yuanhe Lu, Zhen Zhao

27-10-2020 | Original Research

Advanced disk-forging process in producing heavy defect-free disk using counteracting dies

During the conventional disk-forging, the upper die repeatedly compresses materials on the flat stationary base. As the strain distributions of the forged disk are non-uniform owing to friction and uneven temperature distribution, more uniform …

Authors:
Namyong Kim, Il Yeong Oh, Sang Wook Han, Ji Hoon Kim, Chester J. VanTyne, Young Hoon Moon

23-10-2020 | Original Research

Warm forming simulations of Al-Mg alloy sheet using a viscoplastic model and advanced yield functions

Al-Mg alloys have the properties of anisotropy, temperature softening and strain rate hardening in warm forming conditions. The former could be modeled by an advanced non-quadratic yield function. The rate-dependent characteristic could be modeled …

Authors:
Qing Zhang, Yong Zhang, Yuantao Sun, Dateng Zheng

12-10-2020 | Original Research

Comparative assessment of failure strain predictions using ductile damage criteria for warm stretch forming of IN718 alloy

It is vital to envisage accurately the fracture limits of high strength superalloys when noticeable localized necking or thinning tendency is not observed during sheet-metal stretch forming process. The present study mainly focuses on fracture …

Authors:
Gauri Mahalle, Nitin Kotkunde, Amit Kumar Gupta, Swadesh Kumar Singh

12-10-2020 | Original Research

Thermal analysis of the fused filament fabrication printing process: Experimental and numerical investigations

A 3d printing of a thin wall is achieved by a fused filament fabrication process. The influence of the printing velocities on the filament morphology is studied using optical microscopy. The strand morphology is approximated to different …

Authors:
David Xu, Yancheng Zhang, Franck Pigeonneau

09-10-2020 | Original Research

A study of the mechanical properties of a Mg-Al-Zn alloy (AZ91) produced via Thixomolding

In this work, the mechanical properties and failure characteristics of a Mg-9.0Al-0.8Zn alloy (AZ91) fabricated via the Thixomolding process (TC) were investigated and compared with those of alloys formed via other casting processes, including …

Authors:
Mitsuhiro Okayasu, Takahiro Fukui

05-10-2020 | Original Research

Joining polymer parts with self-tapping screws: an improvement of the screw thread geometry

In the present article, the influence of the self-tapping screw’s geometry during the thread forming processes in polymer types used in several industries was studied and analysed using experimental measurement and the finite element method. A …

Authors:
Wilmer E. Cumbicus, Manuel Estrems, Miguel Arizmendi, Amaia Jiménez

24-08-2020 | Original Research

Braid-press forming for manufacturing thermoplastic CFRP tube

Braid-press forming was developed for manufacturing hollow tube parts made of carbon fiber reinforced thermoplastic (CFRTP) tape. The CFRTP tapes were braided to make a tube, which was consolidated under pressure and heat in the press forming …

Authors:
D. Tatsuno, T. Yoneyama, T. Kinari, E. Sakanishi, T. Ochiai, Y. Taniichi

18-08-2020 | Original Research

Calibration of the residual stresses with an active die during the ejection phase of cold extrusion

The resulting tensile residual stresses on the surface of cold full-forward extruded parts are unfavorable for the fatigue life of these parts. The final stress state is determined by the combination of two process stages: forming and ejection.

Authors:
Alessandro Franceschi, Fabian Jaeger, Holger Hoche, Matthias Oechsner, Peter Groche

17-08-2020 | Original Research

An application of fully coupled ductile damage model considering induced anisotropies on springback prediction of advanced high strength steel materials

In this paper, an advanced model formulated in the framework of non-associative plasticity is used to accurately predict the springback of advanced high strength steels material. The proposed model strongly couples the isotropic ductile damage to …

Authors:
M. Yetna N’jock, H. Badreddine, C. Labergere, Z. Yue, K. Saanouni, V.-T. Dang

13-08-2020 | Original Research

Effect of tension-compression testing strategy on kinematic model calibration and springback simulation of advanced high strength steels

Various studies show that application of kinematic hardening models significantly improves the accuracy of springback simulation in sheet metal forming. The springback simulation using kinematic hardening models, e.g., the Yoshida-Uemori (YU) …

Authors:
Junying Min, Nan Guo, Yong Hou, Kaiwei Jiang, Xinping Chen, John E. Carsley, Jianping Lin

03-08-2020 | IJMF 10th Anniversary - Advances in Composites Forming and their induced...

Experimental and numerical study on the tensile failure behavior of toughened-interlayer composite laminates with automated fiber placement (AFP) induced gap and overlap defects

Predictive computational modeling of the effect of automated fiber placement (AFP) defects on the structural performance of aerospace structural composites is of importance in preliminary design. A finite element method (FEM) based framework is …

Authors:
Minh Hoang Nguyen, Paul Davidson, Anthony M. Waas

19-07-2020 | Original Research Open Access

Influence of surface roughness on cold formability in bending processes: a multiscale modelling approach with the hybrid damage mechanics model

Experimental and numerical investigations on the description of cold formability of extra abrasion-resistant steel considering surface roughness effects were performed in this study. A novel multiscale numerical approach to quantitatively evaluate …

Authors:
Peerapon Wechsuwanmanee, Junhe Lian, Fuhui Shen, Sebastian Münstermann

19-07-2020 | Original Research

Deformability of bamboo impregnated with thermosetting resin in upset forging

We developed a processing technique to apply plastic deformation to solid bamboo impregnated with thermosetting resin. To prevent the forming defects such as incomplete filling during upset forgings, we investigated the factors that affect the …

Authors:
Masako Seki, Yuko Yashima, Tomoaki Kiryu, Tsunehisa Miki, Soichi Tanaka, Kozo Kanayama

11-07-2020 | Original Research

Enhancement of adhesion between the polymeric liner and the metallic connector of high-pressure hydrogen storage tank

The importance of manufacturing of hydrogen fuel tanks due to the application of hydrogen fuels in clean and recyclable energy is one of the most important issues of substituting the petroleum fuels. They consist of two main parts: Plastic liner …

Authors:
V. Motaharinejad, L. Delnaud, M. Fouque, A. Lucas, M. Shirinbayan, J. Fitoussi, A. Tcharkhtchi

01-07-2020 | Original Research Open Access

A preform deformation and resin flow coupled model including the cure kinetics and chemo-rheology for the VARTM process

The present paper deals with preform deformation and resin flow coupled to cure kinetics and chemo-rheology for the VARTM process. By monitoring the coupled resin infusion and curing steps through temperature control, our primary aim is to reduce …

Authors:
Da Wu, Ragnar Larsson, Brina Blinzler

30-06-2020 | Original Research Open Access

On the temperature evolution during continuous laser-assisted tape winding of multiple C/PEEK layers: The effect of roller deformation

Laser-assisted tape winding (LATW) is a highly automated process for manufacturing tubular-like fiber-reinforced thermoplastic composites such as flywheels and pipes. One of the crucial parameters in the LATW process is the temperature of the nip …

Authors:
S. M. Amin Hosseini, Ismet Baran, Martin van Drongelen, Remko Akkerman

16-06-2020 | Correction

Correction to: study and modeling of high-density polyethylene coalescence under the extrusion conditions

The original publication of this article unfortunately contains error. The word “extrusion” was spelled incorrectly as “extrussion” in the article title.

Authors:
Abderrahmane Lamri, Saad Lamouri, Djamal Eddine Kherroub, Said Lotfi Hafsaoui, Farid Bakir, Abbas Tcharkhtchi

16-06-2020 | Original Research

The Effect of the tooling temperature on the mechanical properties of CSC-15B22 Steel sheets that undergo tailored tempering

A tailored tempering process, whereby the cooling rate for the sheet is controlled to form regions with very high strength and regions of reduced strength but increased ductility. In order to obtain the optimal mechanical properties for CSC-15B22 …

Authors:
Li-Wei Chen, Chun-Han Tu