The earing profile of cylindrical cups is mainly dictated by the in-plane anisotropic behavior metal sheet. Nevertheless, for materials with a strong contact conditions between blank and blank-holder can also affect material flow due to non-uniform distribution forces. main objective this study numerically assess influence friction on cup using AA3104 aluminum alloy. anisotropy r -values leads ...

Warm deep drawing of polypropylene, a semi-crystalline thermoplastic polymer, is studied using finite element analysis. In this process, circular polypropylene blank preheated to temperature much below its melting and drawn into the shape flat-bottom cylindrical cup punch-die combination, both initially at 25°C. The material model used for analysis considers effects varying strain rate during p...

Accompanying the development of various highly technological materials, electronics and printing techniques advancing towards super-high precision and density, demands are progressively increasing for precisely automated visual inspections in their manufacturing processes. Despite these demands, inspections of printed patterns, sheet surfaces and semiconductors, in which defects on rather large...

Conventional disposable cups, made of fossil-based plastic or paper with inner lining of fossil-based plastic, are typically associated with an unnecessary use of scarce resources and a superfluous production of waste. An alternative has become available in disposable cups from bio-based and biodegradable materials, so-called biocups, made from bioplastic or paper with inner lining of bioplasti...

Let A be a set of trivariate irreducible integral polynomials and let D be an A-invariant cylindrical algebraic decomposition (cad) of three-dimensional space. This paper presents a new algorithm for determining the interstack adjacencies in D over a given non-nullifying (for A) 0-cell, 1-cell adjacency in the cad D 0 of the plane induced by D. We show that this new adjacency algorithm for thre...

Abstract In this study, an artificial neural network (ANN) model was constructed to investigate the relationship between roller path parameters form a cylindrical cup in multi-pass conventional spinning and thickness distribution throughout height of workpiece. Furthermore, that simultaneously realize multiple target values workpiece dimensions were calculated instantly by iterative solution ba...

It is estimated that 2.5–10 bn disposable coffee cups are used every year in the U.K. Most of these cups end up in landfill or as litter, as the majority of poly-coated paper cups are not recyclable or not recycled. Here, we report on a field experiment that was conducted at twelve university and business sites to examine whether the use of reusable cups can be promoted through easily implement...