Abstract The hairpin is a crucial component of the drive motor an electric vehicle, consisting copper coil and very thin enamel layer. It manufactured using successive forming processes due to its complex shape. After processes, springback inevitably observed, which causes critical issues in fabricating motor. Compensating time cost-inefficient process, new process required for cost-efficient p...

Aluminium alloys are one of the most efficient materials for weight reduction in car industry. However, favourable performance conflicts with difficulties transforming these through plastic deformation processes such as stamping. Among different issues, they characterised by a high springback effect. Numerous authors have explored use electro-plastic effect (EPE) to mitigate internal stresses a...

We propose a new penalty, the springback for constructing models to recover an unknown signal from incomplete and inaccurate measurements. Mathematically, penalty is weakly convex function. It bears various theoretical computational advantages of both benchmark $\ell_1$ many its non-convex surrogates that have been well studied in literature. establish exact stable recovery theory model using s...

In real crash cases, simple bending behavior is not common. this case, using the three-point test to examine provides a closer simulation in terms of representation structure under loading. It seen literature that products with tube sections are generally used as door im-pact beams. On other hand, when examining developed high strength steels, it studies on profiles only evaluated hydroforming....

Kinematic bending of profiles allows to manufacture parts with high flexibility concerning the geometry. Still, production asymmetric cross-sections regarding force application axis using kinematic processes offers challenges springback and warping. These geometric deviations can be reduced by partial, cross-sectional heating during process as it lowers flow stress locally. In this work, influe...

Samples of wood from Populus × canadensis (9,5 % moisture) were treated with olive oil at 195 °C simultaneously 15 or 30 compression densification, and the results compared samples subjected to heat treatment without control samples. The density increased by 18 %, 43 1,5 respectively, barely changed over six subsequent months stored inside laboratory room (at approximately 65 RH, 20 °C). Thi...

Hybrid machining-forming technology is a combination of two thin-structural machining and incremental forming manufacturing processes. A group complex geometry parts in which thick region connected to thin-wall can be manufactured through this with certain advantages. The made by require less raw material compared the ones created means machining. major problem dimensional geometric inaccuracy ...

The assembly of compliant, non-rigid parts is widely used in automotive, aerospace, electronics, and appliance manufacturing. Dimensional variation is one important measure of quality in such assembly. This paper presents models for analyzing the propagation of dimensional variation in multi-stage compliant assembly systems and the use of such models for robust design and adaptive control of as...

Reliable simulation of hot stamping process requires accurate material data. This paper describes the development of computer models that can provide many of the material data required, including TTT/CCT phase transformation diagrams, temperature dependent physical and thermophysical properties, as well as temperature and strain rate dependent mechanical properties including high temperature st...