formability of automotive friction stir welded twb (tailor welded blank) sheets isnumerically investigated in biaxial stretching based on hemispherical dome stretch (hds) test infour automotive sheets of aluminum alloy 6111-t4, 5083-h18, 5083-o and dp590 steel, havingdifferent thicknesses. the effects of the weld zone modeling and the thickness ratio on formabilityare evaluated. in order to car...

Pressure-assisted single-point incremental forming (PA-SPIF) is one of the emerging techniques for sheet metals that have been subject rigorous research over past two decades. Understanding its mechanisms and capabilities growing as a result. Open gaps are still present in material constitutive modelling accurate numerical predictions finite-element simulations characteristics localised deforma...

Forming complex sheet products using hydrostatic forming technology is currently a focus of the majority processes. However, in order to increase stability during process, it necessary identify and analyze dependency pressure quality product on input parameters. For purpose modeling pressure, this paper presents empirical research cylindrical cup made various materials, including carbon steel (...

Sedimentary beds of alternating red and green colour are commonly interpreted to reflect orbitally-forced cyclic climatic, syn-depositional conditions, although changes caused by post-depositional fluids also documented. Results from IODP Hole U1502A marine sediments in the South China Sea exemplify reducing fluid–rock interactions that locally changed sediment green. Petrographic, rock magneti...

introduction a wide variety of world-class porphyry cu deposits occur in the urumieh-dohktar magmatic arc (udma) of iran.the arc is composed of calc-alkaline granitoid rocks, and the ore-hosting porphyry intrusions are dominantly granodiorite to quartz-monzonite (zarasvandi et al., 2015). it is believed that faults played an important role in the emplacement of intrusions and subsequentporphyry...

The present paper aims to deliberate the geometric composition of a perfect fluid spacetime with torse-forming vector field ? in connection conformal Ricci–Yamabe metric and ?-Ricci–Yamabe metric. We delineate conditions for soliton be expanding, steady or shrinking. also discuss on some special types such as dust fluid, dark radiation era. Furthermore, we design find its characteristics lastly...

BACKGROUND The diagnosis of pleural tuberculosis (TB) remains to be difficult. Interferon-gamma release assay (IGRA) is a promising method for diagnosing TB in low TB burden countries. The release of interferon-gamma (IFN-γ) by T lymphocytes increases at a localized site of infection with Mycobacterium tuberculosis antigen. This study aimed to examine the clinical accuracy of T-SPOT.TB on pleur...

The ability to send a wave to fetch an object from a distance would find a broad range of applications. Quasi-standing Faraday waves on water create horizontal vortices1,2, yet it is not known whether propagating waves can generate large-scale flows—small-amplitude irrotational waves only push particles in the direction of propagation3–5. Here we show that when waves become three-dimensional as...

BACKGROUND Pasteurella multocida, Mannheimia haemolytica, Histophilus somni and Trueperella pyogenes are four bacterial agents commonly associated with bovine respiratory disease (BRD). In this study a bacterial multiplex real-time PCR (the RespoCheck PCR) was evaluated for the detection in bronchoalveolar lavage fluid (BALF) of these four bacterial agents. RESULTS The analytical sensitivity ...