University of Windsor

About: University of Windsor is a education organization based out in Windsor, Ontario, Canada. It is known for research contribution in the topics: Population & Argumentation theory. The organization has 10654 authors who have published 22307 publications receiving 435906 citations. The organization is also known as: UWindsor & Assumption University of Windsor.

Sliding wear behaviour of electrolytic plasma nitrided cast iron and steel

Abstract: A new nitriding method, called electrolytic plasma nitriding (EPN), was used for surface modification of a cast iron G3500 and cast steel S0050A. The phase structure of the treated samples was determined by X-ray diffraction (XRD). Hardness of the treated and untreated cast iron and steel was measured using a microhardness tester, and their tribological properties were evaluated using a pin-on-disc tribometer at dry and lubricated testing conditions. Scanning electron microscopy and surface profilometry were also employed to study their wear behaviours. It was found that the EPN treatment could significantly increase hardness and wear resistance of the cast iron and cast steel.

Probing the structural origins of vapochromism of a triarylboron-functionalized platinum(II) acetylide by optical and multinuclear solid-state NMR spectroscopy.

Abstract: A vapoluminescent triarylboron-functionalized platinum(II) complex that displays a mechanism of vapochromism differing from all previously reported platinum(II) compounds has been synthesized. The luminescence color of 1 switches in response to many volatile organic compounds in the solid state, including hexanes, CH2Cl2, benzene, and methanol. While vapochromism due to changes in Pt−Pt or π−π stacking interactions has been commonly observed, absorption and luminescence studies and single-crystal and powder X-ray diffraction data as well as multinuclear solid-state NMR experiments (195Pt, 13C, 11B, 2H, and 1H) revealed that the vapochromic response of 1 is instead due to changes in the excited-state energy levels resulting from local interactions of solvent molecules with the complex. Furthermore, these interactions result in inversion of the lowest-energy excited states of the complex in some cases, the first observation of this phenomenon in the solid state.

Changing and Evolving Products and Systems - Models and Enablers

Abstract: Many manufacturing challenges emerged due to the proliferation of products variety caused by products evolution and customization. They require responsiveness in all manufacturing support functions to act as effective enablers of change. This Chapter summarizes some recent findings by the author and coresearchers that address these issues.A variation hierarchy for product variants, from part features to products portfolios, was presented and discussed. The evolution of products and manufacturing systems is discussed and linked, for the first time, to the evolution witnessed in nature. The concept of evolving families for varying parts and products is presented. A biological analogy was used in modeling of products evolution and Cladistics was used for its classification. This novel approach was applied to the design of assembly systems layouts with the objective of rationalizing and delaying products differentiation and managing their variations. Process planning is part of the “soft” or “logical” enablers of change in manufacturing as the link between products and their processing steps. New perspectives on process planning for changing and evolving products and production systems are presented. Process-neutral and process-specific products variations were identified and defined. A recently developed innovative, and fundamentally different, method for Reconfiguring Process Plans (RPP) and new metrics for their evaluation are presented and their significance and applicability in various domains are summarized. The merits of reconfiguring process plans on-the-fly for managing the complexity and extensive variations in products families, platforms and portfolios are highlighted and compared with the traditional re-planning and pre-planning approaches. The conclusions shed light on the increasing challenges due to variations and changes in products and their manufacturing systems and the need for effective solutions and more research in this field.