Asymmetric rolling (ASR) is a method to manufacture sheet metals with the aim of improving material performance. The objective present work investigate effect asymmetric on an aluminum alloy used in automotive industry. To this end, three parameters process were studied, namely asymmetry factor (1, symmetric (SR) and 1.36, (AR)), thickness reduction per pass (10%, 15%, 30%), routes (asymmetric ...

Forming Limit Diagrams are useful tools for evaluation of formability in the sheet metals. In this paper the effects of yield criteria on predictions of the right and left-hand sides of forming limit diagrams (FLDs) are investigated. In prediction of FLD, Hosford 1979, “Karafillis-Boyce” (K-B) and BBC2000 anisotropy yield functions have been applied. Whereas the prediction of FLD is based on th...

This study analyses the effect of martensite grain size and its volume fraction in dual-phase (DP) steel on (1) formability limit, (2) average global behavior under different loading conditions, (3) damage initiation. The virtual RVEs (Representative Volume Elements) were constructed using DREAM.3D software with a variation microstructural attributes. numerical simulations carried out DAMASK, w...

Forming limit diagrams (FLDs) are calculated based on both the Marciniak and Kuczynski (M-K)  model and the analysis proposed by Jones and Gillis (J-G). J-G analysis consisted of plastic deformation approximation by three deformation phases. These phases consisted of homogeneous deformation up to the maximum load (Phase I), deformation localization under constant load (phase II) and local necki...

An enhanced unfolding Inverse Finite Element Method (IFEM) has been used together with an extended strain-based forming limit diagram (EFLD) to develop a fast and reliable approach to predict the feasibility of the deep drawing process of a part and determining where the failure or defects can occur. In the developed unfolding IFEM, the meshed part is properly fold out on the flat sheet and tre...

BACKGROUND Currently we observe a growing interest in human saliva as a non-invasive material for diagnosis and monitoring of general and oral diseases. METHODS The aim of our study was adaptation of the Marciniak et al. (Marciniak J, Zalewska A, Popko J, Zwierz K, 2006, Clin Chem Lab Med 44: 933-937) method for determination of HEX and GLU activity in synovial fluid, and for determination of...

Daniel McDonald ([email protected]) Jose C Clemente ([email protected]) Justin Kuczynski ([email protected]) Jai Ram Rideout ([email protected]) Jesse Stombaugh ([email protected]) Doug Wendel ([email protected]) Andreas Wilke ([email protected]) Susan Huse ([email protected]) John Hufnagle ([email protected]) Folker Meyer ([email protected]) Rob Knight (rob.knight@c...